parent
2772b1d36d
commit
115d7c1036
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@ -77,31 +77,12 @@ ErrorOr<std::unique_ptr<InputFile>> LinkerDriver::openFile(StringRef Path) {
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return std::unique_ptr<InputFile>(new ObjectFile(MBRef));
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}
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namespace {
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class BumpPtrStringSaver : public llvm::cl::StringSaver {
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public:
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BumpPtrStringSaver(lld::coff::StringAllocator *A) : Alloc(A) {}
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const char *SaveString(const char *S) override {
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return Alloc->save(S).data();
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}
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lld::coff::StringAllocator *Alloc;
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};
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}
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// Parses .drectve section contents and returns a list of files
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// specified by /defaultlib.
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std::error_code
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LinkerDriver::parseDirectives(StringRef S,
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std::vector<std::unique_ptr<InputFile>> *Res) {
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SmallVector<const char *, 16> Tokens;
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Tokens.push_back("link"); // argv[0] value. Will be ignored.
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BumpPtrStringSaver Saver(&Alloc);
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llvm::cl::TokenizeWindowsCommandLine(S, Saver, Tokens);
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Tokens.push_back(nullptr);
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int Argc = Tokens.size() - 1;
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const char **Argv = &Tokens[0];
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auto ArgsOrErr = parseArgs(Argc, Argv);
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auto ArgsOrErr = Parser.parse(S);
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if (auto EC = ArgsOrErr.getError())
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return EC;
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std::unique_ptr<llvm::opt::InputArgList> Args = std::move(ArgsOrErr.get());
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@ -204,7 +185,7 @@ bool LinkerDriver::link(int Argc, const char *Argv[]) {
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llvm::InitializeAllDisassemblers();
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// Parse command line options.
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auto ArgsOrErr = parseArgs(Argc, Argv);
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auto ArgsOrErr = Parser.parse(Argc, Argv);
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if (auto EC = ArgsOrErr.getError()) {
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llvm::errs() << EC.message() << "\n";
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return false;
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@ -35,6 +35,29 @@ class InputFile;
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// Entry point of the COFF linker.
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bool link(int Argc, const char *Argv[]);
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class ArgParser {
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public:
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// Parses command line options.
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ErrorOr<std::unique_ptr<llvm::opt::InputArgList>> parse(int Argc,
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const char *Argv[]);
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// Tokenizes a given string and then parses as command line options.
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ErrorOr<std::unique_ptr<llvm::opt::InputArgList>> parse(StringRef S) {
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return parse(tokenize(S));
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}
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private:
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ErrorOr<std::unique_ptr<llvm::opt::InputArgList>>
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parse(std::vector<const char *> Argv);
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std::vector<const char *> tokenize(StringRef S);
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ErrorOr<std::vector<const char *>>
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replaceResponseFiles(std::vector<const char *>);
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StringAllocator Alloc;
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};
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class LinkerDriver {
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public:
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LinkerDriver() : SearchPaths(getSearchPaths()) {}
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@ -46,6 +69,7 @@ public:
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private:
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StringAllocator Alloc;
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ArgParser Parser;
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// Opens a file. Path has to be resolved already.
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ErrorOr<std::unique_ptr<InputFile>> openFile(StringRef Path);
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@ -68,9 +92,6 @@ private:
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std::vector<std::unique_ptr<MemoryBuffer>> OwningMBs;
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};
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ErrorOr<std::unique_ptr<llvm::opt::InputArgList>>
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parseArgs(int Argc, const char *Argv[]);
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// Functions below this line are defined in DriverUtils.cpp.
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void printHelp(const char *Argv0);
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@ -159,13 +159,24 @@ public:
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COFFOptTable() : OptTable(infoTable, llvm::array_lengthof(infoTable), true) {}
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};
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// Parses a given list of options.
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ErrorOr<std::unique_ptr<llvm::opt::InputArgList>>
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parseArgs(int Argc, const char *Argv[]) {
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ArgParser::parse(std::vector<const char *> Argv) {
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// First, replace respnose files (@<file>-style options).
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auto ArgvOrErr = replaceResponseFiles(Argv);
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if (auto EC = ArgvOrErr.getError()) {
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llvm::errs() << "error while reading response file: " << EC.message()
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<< "\n";
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return EC;
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}
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Argv = std::move(ArgvOrErr.get());
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// Make InputArgList from string vectors.
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COFFOptTable Table;
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unsigned MissingIndex;
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unsigned MissingCount;
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std::unique_ptr<llvm::opt::InputArgList> Args(
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Table.ParseArgs(&Argv[1], &Argv[Argc], MissingIndex, MissingCount));
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std::unique_ptr<llvm::opt::InputArgList> Args(Table.ParseArgs(
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&Argv[0], &Argv[0] + Argv.size(), MissingIndex, MissingCount));
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if (MissingCount) {
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llvm::errs() << "missing arg value for \""
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<< Args->getArgString(MissingIndex)
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@ -178,6 +189,55 @@ parseArgs(int Argc, const char *Argv[]) {
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return std::move(Args);
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}
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ErrorOr<std::unique_ptr<llvm::opt::InputArgList>>
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ArgParser::parse(int Argc, const char *Argv[]) {
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std::vector<const char *> V;
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V.insert(V.end(), Argv + 1, Argv + Argc);
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return parse(V);
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}
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namespace {
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class BumpPtrStringSaver : public llvm::cl::StringSaver {
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public:
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BumpPtrStringSaver(lld::coff::StringAllocator *A) : Alloc(A) {}
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const char *SaveString(const char *S) override {
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return Alloc->save(S).data();
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}
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lld::coff::StringAllocator *Alloc;
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};
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}
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std::vector<const char *> ArgParser::tokenize(StringRef S) {
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SmallVector<const char *, 16> Tokens;
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BumpPtrStringSaver Saver(&Alloc);
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llvm::cl::TokenizeWindowsCommandLine(S, Saver, Tokens);
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std::vector<const char *> V;
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V.insert(V.end(), &Tokens[0], &Tokens[0] + Tokens.size());
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return V;
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}
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// Creates a new command line by replaceing options starting with '@'
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// character. '@<filename>' is replaced by the file's contents.
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ErrorOr<std::vector<const char *>>
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ArgParser::replaceResponseFiles(std::vector<const char *> Argv) {
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std::vector<const char *> V;
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for (const char *S : Argv) {
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if (S[0] != '@') {
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V.push_back(S);
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continue;
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}
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StringRef Path = S + 1;
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auto BufOrErr = MemoryBuffer::getFile(Path);
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if (auto EC = BufOrErr.getError())
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return EC;
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std::unique_ptr<MemoryBuffer> Buf = std::move(BufOrErr.get());
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StringRef Str = Alloc.save(Buf->getBuffer());
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std::vector<const char *> Tokens = tokenize(Str);
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V.insert(V.end(), Tokens.begin(), Tokens.end());
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}
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return V;
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}
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void printHelp(const char *Argv0) {
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COFFOptTable Table;
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Table.PrintHelp(llvm::outs(), Argv0, "LLVM Linker", false);
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@ -0,0 +1,7 @@
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# RUN: yaml2obj < %p/Inputs/ret42.yaml > %t.obj
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# RUN: echo /out:%t.exe %t.obj > %t.rsp
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# RUN: lld -flavor link2 @%t.rsp /heap:0x3000
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# RUN: llvm-readobj -file-headers %t.exe | FileCheck %s
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CHECK: SizeOfHeapReserve: 12288
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Loading…
Reference in New Issue