forked from OSchip/llvm-project
104 lines
3.2 KiB
C++
104 lines
3.2 KiB
C++
//===- lib/ReaderWriter/ReaderLinkerScript.cpp ----------------------------===//
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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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#include "lld/ReaderWriter/ReaderLinkerScript.h"
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#include "lld/Core/Error.h"
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#include "lld/Core/File.h"
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#include "lld/ReaderWriter/LinkerScript.h"
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using namespace lld;
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using namespace script;
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namespace {
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class LinkerScriptFile : public File {
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public:
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static ErrorOr<std::unique_ptr<LinkerScriptFile> >
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create(const LinkingContext &context,
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std::unique_ptr<llvm::MemoryBuffer> mb) {
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std::unique_ptr<LinkerScriptFile> file(
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new LinkerScriptFile(context, std::move(mb)));
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file->_script = file->_parser.parse();
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if (!file->_script)
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return linker_script_reader_error::parse_error;
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return std::move(file);
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}
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static inline bool classof(const File *f) {
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return f->kind() == kindLinkerScript;
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}
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virtual void setOrdinalAndIncrement(uint64_t &ordinal) const {
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_ordinal = ordinal++;
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}
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virtual const LinkingContext &getLinkingContext() const { return _context; }
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virtual const atom_collection<DefinedAtom> &defined() const {
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return _definedAtoms;
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}
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virtual const atom_collection<UndefinedAtom> &undefined() const {
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return _undefinedAtoms;
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}
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virtual const atom_collection<SharedLibraryAtom> &sharedLibrary() const {
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return _sharedLibraryAtoms;
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}
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virtual const atom_collection<AbsoluteAtom> &absolute() const {
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return _absoluteAtoms;
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}
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const LinkerScript *getScript() { return _script; }
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private:
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LinkerScriptFile(const LinkingContext &context,
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std::unique_ptr<llvm::MemoryBuffer> mb)
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: File(mb->getBufferIdentifier(), kindLinkerScript), _context(context),
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_lexer(std::move(mb)), _parser(_lexer), _script(nullptr) {}
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const LinkingContext &_context;
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atom_collection_vector<DefinedAtom> _definedAtoms;
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atom_collection_vector<UndefinedAtom> _undefinedAtoms;
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atom_collection_vector<SharedLibraryAtom> _sharedLibraryAtoms;
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atom_collection_vector<AbsoluteAtom> _absoluteAtoms;
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Lexer _lexer;
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Parser _parser;
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const LinkerScript *_script;
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};
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} // end anon namespace
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namespace lld {
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error_code ReaderLinkerScript::parseFile(
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LinkerInput &input, std::vector<std::unique_ptr<File> > &result) const {
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auto lsf = LinkerScriptFile::create(_context, input.takeBuffer());
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if (!lsf)
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return lsf;
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const LinkerScript *ls = (*lsf)->getScript();
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result.push_back(std::move(*lsf));
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for (const auto &c : ls->_commands) {
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if (auto group = dyn_cast<lld::script::Group>(c))
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for (const auto &path : group->getPaths()) {
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OwningPtr<llvm::MemoryBuffer> opmb;
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if (error_code ec =
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llvm::MemoryBuffer::getFileOrSTDIN(path._path, opmb))
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return ec;
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LinkerInput newInput(std::unique_ptr<llvm::MemoryBuffer>(opmb.take()),
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input);
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if (error_code ec = _context.parseFile(newInput, result))
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return ec;
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}
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}
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return error_code::success();
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}
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} // end namespace lld
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