69e2881070
This patch adds the initial ELF/AArch64 support to lld. Only a basic "Hello World" app has been successfully tested for both dynamic and static compiling. Differential Revision: http://reviews.llvm.org/D4778 Patch by Daniel Stewart <stewartd@codeaurora.org>! llvm-svn: 215544
70 lines
2.1 KiB
C++
70 lines
2.1 KiB
C++
//===- lib/ReaderWriter/ELF/AArch64/AArch64ExecutableWriter.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 AARCH64_EXECUTABLE_WRITER_H
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#define AARCH64_EXECUTABLE_WRITER_H
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#include "ExecutableWriter.h"
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#include "AArch64LinkingContext.h"
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namespace lld {
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namespace elf {
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template <class ELFT>
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class AArch64ExecutableWriter : public ExecutableWriter<ELFT> {
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public:
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AArch64ExecutableWriter(AArch64LinkingContext &context,
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AArch64TargetLayout<ELFT> &layout);
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protected:
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// Add any runtime files and their atoms to the output
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bool createImplicitFiles(std::vector<std::unique_ptr<File>> &) override;
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void finalizeDefaultAtomValues() override {
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return ExecutableWriter<ELFT>::finalizeDefaultAtomValues();
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}
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void addDefaultAtoms() override{
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return ExecutableWriter<ELFT>::addDefaultAtoms();
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}
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private:
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class GOTFile : public SimpleFile {
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public:
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GOTFile(const ELFLinkingContext &eti) : SimpleFile("GOTFile") {}
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llvm::BumpPtrAllocator _alloc;
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};
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std::unique_ptr<GOTFile> _gotFile;
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AArch64LinkingContext &_context;
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AArch64TargetLayout<ELFT> &_AArch64Layout;
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};
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template <class ELFT>
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AArch64ExecutableWriter<ELFT>::AArch64ExecutableWriter(
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AArch64LinkingContext &context, AArch64TargetLayout<ELFT> &layout)
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: ExecutableWriter<ELFT>(context, layout), _gotFile(new GOTFile(context)),
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_context(context), _AArch64Layout(layout) {}
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template <class ELFT>
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bool AArch64ExecutableWriter<ELFT>::createImplicitFiles(
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std::vector<std::unique_ptr<File>> &result) {
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ExecutableWriter<ELFT>::createImplicitFiles(result);
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_gotFile->addAtom(*new (_gotFile->_alloc) GLOBAL_OFFSET_TABLEAtom(*_gotFile));
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_gotFile->addAtom(*new (_gotFile->_alloc) TLSGETADDRAtom(*_gotFile));
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if (_context.isDynamic())
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_gotFile->addAtom(*new (_gotFile->_alloc) DYNAMICAtom(*_gotFile));
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result.push_back(std::move(_gotFile));
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return true;
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}
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} // namespace elf
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} // namespace lld
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#endif
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