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to reflect the new license. We understand that people may be surprised that we're moving the header entirely to discuss the new license. We checked this carefully with the Foundation's lawyer and we believe this is the correct approach. Essentially, all code in the project is now made available by the LLVM project under our new license, so you will see that the license headers include that license only. Some of our contributors have contributed code under our old license, and accordingly, we have retained a copy of our old license notice in the top-level files in each project and repository. llvm-svn: 351636
71 lines
2.3 KiB
C++
71 lines
2.3 KiB
C++
//===- lib/ReaderWriter/MachO/WriterMachO.cpp -----------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "ExecutableAtoms.h"
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#include "MachONormalizedFile.h"
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#include "lld/Core/File.h"
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#include "lld/Core/Writer.h"
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#include "lld/ReaderWriter/MachOLinkingContext.h"
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#include "llvm/BinaryFormat/MachO.h"
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#include "llvm/Support/Debug.h"
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#include "llvm/Support/ErrorHandling.h"
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#include "llvm/Support/FileOutputBuffer.h"
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#include "llvm/Support/raw_ostream.h"
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#include <system_error>
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using lld::mach_o::normalized::NormalizedFile;
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namespace lld {
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namespace mach_o {
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class MachOWriter : public Writer {
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public:
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MachOWriter(const MachOLinkingContext &ctxt) : _ctx(ctxt) {}
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llvm::Error writeFile(const lld::File &file, StringRef path) override {
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// Construct empty normalized file from atoms.
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llvm::Expected<std::unique_ptr<NormalizedFile>> nFile =
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normalized::normalizedFromAtoms(file, _ctx);
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if (auto ec = nFile.takeError())
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return ec;
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// For testing, write out yaml form of normalized file.
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if (_ctx.printAtoms()) {
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std::unique_ptr<Writer> yamlWriter = createWriterYAML(_ctx);
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if (auto ec = yamlWriter->writeFile(file, "-"))
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return ec;
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}
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// Write normalized file as mach-o binary.
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return writeBinary(*nFile->get(), path);
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}
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void createImplicitFiles(std::vector<std::unique_ptr<File>> &r) override {
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// When building main executables, add _main as required entry point.
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if (_ctx.outputTypeHasEntry())
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r.emplace_back(new CEntryFile(_ctx));
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// If this can link with dylibs, need helper function (dyld_stub_binder).
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if (_ctx.needsStubsPass())
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r.emplace_back(new StubHelperFile(_ctx));
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// Final linked images can access a symbol for their mach_header.
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if (_ctx.outputMachOType() != llvm::MachO::MH_OBJECT)
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r.emplace_back(new MachHeaderAliasFile(_ctx));
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}
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private:
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const MachOLinkingContext &_ctx;
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};
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} // namespace mach_o
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std::unique_ptr<Writer> createWriterMachO(const MachOLinkingContext &context) {
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return std::unique_ptr<Writer>(new lld::mach_o::MachOWriter(context));
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}
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} // namespace lld
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