int llvm::libDriverMain(llvm::ArrayRef<const char*> ArgsArr) {
SmallVector<const char *, 20> NewArgs(ArgsArr.begin(), ArgsArr.end());
BumpPtrAllocator Alloc;
BumpPtrStringSaver Saver(Alloc);
cl::ExpandResponseFiles(Saver, cl::TokenizeWindowsCommandLine, NewArgs);
ArgsArr = NewArgs;
LibOptTable Table;
unsigned MissingIndex;
unsigned MissingCount;
llvm::opt::InputArgList Args =
Table.ParseArgs(ArgsArr.slice(1), MissingIndex, MissingCount);
if (MissingCount) {
llvm::errs() << "missing arg value for \""
<< Args.getArgString(MissingIndex) << "\", expected "
<< MissingCount
<< (MissingCount == 1 ? " argument.\n" : " arguments.\n");
return 1;
}
for (auto *Arg : Args.filtered(OPT_UNKNOWN))
llvm::errs() << "ignoring unknown argument: " << Arg->getSpelling() << "\n";
if (Args.filtered_begin(OPT_INPUT) == Args.filtered_end()) {
llvm::errs() << "no input files.\n";
return 1;
}
std::vector<StringRef> SearchPaths = getSearchPaths(&Args, Saver);
std::vector<llvm::NewArchiveIterator> Members;
for (auto *Arg : Args.filtered(OPT_INPUT)) {
Optional<std::string> Path = findInputFile(Arg->getValue(), SearchPaths);
if (!Path.hasValue()) {
llvm::errs() << Arg->getValue() << ": no such file or directory\n";
return 1;
}
Members.emplace_back(Saver.save(*Path),
llvm::sys::path::filename(Arg->getValue()));
}
std::pair<StringRef, std::error_code> Result =
llvm::writeArchive(getOutputPath(&Args, Members[0]), Members,
/*WriteSymtab=*/true, object::Archive::K_GNU,
/*Deterministic*/ true, /*Thin*/ false);
if (Result.second) {
if (Result.first.empty())
Result.first = ArgsArr[0];
llvm::errs() << Result.first << ": " << Result.second.message() << "\n";
return 1;
}
return 0;
}
bool CoreDriver::parse(llvm::ArrayRef<const char *> args,
CoreLinkingContext &ctx, raw_ostream &diagnostics) {
// Parse command line options using CoreOptions.td
CoreOptTable table;
unsigned missingIndex;
unsigned missingCount;
llvm::opt::InputArgList parsedArgs =
table.ParseArgs(args.slice(1), missingIndex, missingCount);
if (missingCount) {
diagnostics << "error: missing arg value for '"
<< parsedArgs.getArgString(missingIndex) << "' expected "
<< missingCount << " argument(s).\n";
return false;
}
// Set default options
ctx.setOutputPath("-");
ctx.setDeadStripping(false);
ctx.setGlobalsAreDeadStripRoots(false);
ctx.setPrintRemainingUndefines(false);
ctx.setAllowRemainingUndefines(true);
ctx.setSearchArchivesToOverrideTentativeDefinitions(false);
// Process all the arguments and create input files.
for (auto inputArg : parsedArgs) {
switch (inputArg->getOption().getID()) {
case OPT_mllvm:
ctx.appendLLVMOption(inputArg->getValue());
break;
case OPT_entry:
ctx.setEntrySymbolName(inputArg->getValue());
break;
case OPT_output:
ctx.setOutputPath(inputArg->getValue());
break;
case OPT_dead_strip:
ctx.setDeadStripping(true);
break;
case OPT_keep_globals:
ctx.setGlobalsAreDeadStripRoots(true);
break;
case OPT_undefines_are_errors:
ctx.setPrintRemainingUndefines(true);
ctx.setAllowRemainingUndefines(false);
break;
case OPT_commons_search_archives:
ctx.setSearchArchivesToOverrideTentativeDefinitions(true);
break;
case OPT_add_pass:
ctx.addPassNamed(inputArg->getValue());
break;
case OPT_INPUT: {
std::vector<std::unique_ptr<File>> files
= loadFile(ctx, inputArg->getValue(), false);
for (std::unique_ptr<File> &file : files)
ctx.getNodes().push_back(llvm::make_unique<FileNode>(std::move(file)));
break;
}
default:
break;
}
}
if (ctx.getNodes().empty()) {
diagnostics << "No input files\n";
return false;
}
// Validate the combination of options used.
return ctx.validate(diagnostics);
}
void BuildSystemInvocation::parse(llvm::ArrayRef<std::string> args,
llvm::SourceMgr& sourceMgr) {
auto error = [&](const Twine &message) {
sourceMgr.PrintMessage(llvm::SMLoc{}, llvm::SourceMgr::DK_Error, message);
hadErrors = true;
};
while (!args.empty()) {
const auto& option = args.front();
args = args.slice(1);
if (option == "-") {
for (const auto& arg: args) {
positionalArgs.push_back(arg);
}
break;
}
if (!option.empty() && option[0] != '-') {
positionalArgs.push_back(option);
continue;
}
if (option == "--help") {
showUsage = true;
break;
} else if (option == "--version") {
showVersion = true;
break;
} else if (option == "--no-db") {
dbPath = "";
} else if (option == "--db") {
if (args.empty()) {
error("missing argument to '" + option + "'");
break;
}
dbPath = args[0];
args = args.slice(1);
} else if (option == "-C" || option == "--chdir") {
if (args.empty()) {
error("missing argument to '" + option + "'");
break;
}
chdirPath = args[0];
args = args.slice(1);
} else if (option == "-f") {
if (args.empty()) {
error("missing argument to '" + option + "'");
break;
}
buildFilePath = args[0];
args = args.slice(1);
} else if (option == "--serial") {
useSerialBuild = true;
} else if (option == "-v" || option == "--verbose") {
showVerboseStatus = true;
} else if (option == "--trace") {
if (args.empty()) {
error("missing argument to '" + option + "'");
break;
}
traceFilePath = args[0];
args = args.slice(1);
} else {
error("invalid option '" + option + "'");
break;
}
}
}
bool GnuLdDriver::parse(llvm::ArrayRef<const char *> args,
std::unique_ptr<ELFLinkingContext> &context,
raw_ostream &diag) {
// Parse command line options using GnuLdOptions.td
GnuLdOptTable table;
unsigned missingIndex;
unsigned missingCount;
llvm::opt::InputArgList parsedArgs =
table.ParseArgs(args.slice(1), missingIndex, missingCount);
if (missingCount) {
diag << "error: missing arg value for '"
<< parsedArgs.getArgString(missingIndex) << "' expected "
<< missingCount << " argument(s).\n";
return false;
}
// Handle --help
if (parsedArgs.hasArg(OPT_help)) {
table.PrintHelp(llvm::outs(), args[0], "LLVM Linker", false);
return true;
}
// Use -target or use default target triple to instantiate LinkingContext
llvm::Triple baseTriple;
if (auto *arg = parsedArgs.getLastArg(OPT_target)) {
baseTriple = llvm::Triple(arg->getValue());
} else {
baseTriple = getDefaultTarget(args[0]);
}
llvm::Triple triple(baseTriple);
if (!applyEmulation(triple, parsedArgs, diag))
return false;
std::unique_ptr<ELFLinkingContext> ctx(createELFLinkingContext(triple));
if (!ctx) {
diag << "unknown target triple\n";
return false;
}
// Copy mllvm
for (auto *arg : parsedArgs.filtered(OPT_mllvm))
ctx->appendLLVMOption(arg->getValue());
// Ignore unknown arguments.
for (auto unknownArg : parsedArgs.filtered(OPT_UNKNOWN))
diag << "warning: ignoring unknown argument: "
<< unknownArg->getValue() << "\n";
// Set sys root path.
if (auto *arg = parsedArgs.getLastArg(OPT_sysroot))
ctx->setSysroot(arg->getValue());
// Handle --demangle option(For compatibility)
if (parsedArgs.hasArg(OPT_demangle))
ctx->setDemangleSymbols(true);
// Handle --no-demangle option.
if (parsedArgs.hasArg(OPT_no_demangle))
ctx->setDemangleSymbols(false);
// Figure out output kind (-r, -static, -shared)
if (parsedArgs.hasArg(OPT_relocatable)) {
ctx->setOutputELFType(llvm::ELF::ET_REL);
ctx->setPrintRemainingUndefines(false);
ctx->setAllowRemainingUndefines(true);
}
if (parsedArgs.hasArg(OPT_static)) {
ctx->setOutputELFType(llvm::ELF::ET_EXEC);
ctx->setIsStaticExecutable(true);
}
if (parsedArgs.hasArg(OPT_shared)) {
ctx->setOutputELFType(llvm::ELF::ET_DYN);
ctx->setAllowShlibUndefines(true);
ctx->setUseShlibUndefines(false);
ctx->setPrintRemainingUndefines(false);
ctx->setAllowRemainingUndefines(true);
}
// Handle --stats.
if (parsedArgs.hasArg(OPT_stats)) {
ctx->setCollectStats(true);
}
// Figure out if the output type is nmagic/omagic
if (auto *arg =
parsedArgs.getLastArg(OPT_nmagic, OPT_omagic, OPT_no_omagic)) {
switch (arg->getOption().getID()) {
case OPT_nmagic:
ctx->setOutputMagic(ELFLinkingContext::OutputMagic::NMAGIC);
ctx->setIsStaticExecutable(true);
break;
case OPT_omagic:
ctx->setOutputMagic(ELFLinkingContext::OutputMagic::OMAGIC);
ctx->setIsStaticExecutable(true);
break;
case OPT_no_omagic:
ctx->setOutputMagic(ELFLinkingContext::OutputMagic::DEFAULT);
ctx->setNoAllowDynamicLibraries();
break;
}
}
if (parsedArgs.hasArg(OPT_discard_loc))
ctx->setDiscardLocals(true);
if (parsedArgs.hasArg(OPT_discard_temp_loc))
ctx->setDiscardTempLocals(true);
if (parsedArgs.hasArg(OPT_strip_all))
ctx->setStripSymbols(true);
if (auto *arg = parsedArgs.getLastArg(OPT_soname))
ctx->setSharedObjectName(arg->getValue());
if (parsedArgs.hasArg(OPT_rosegment))
ctx->setCreateSeparateROSegment();
if (parsedArgs.hasArg(OPT_no_align_segments))
ctx->setAlignSegments(false);
if (auto *arg = parsedArgs.getLastArg(OPT_image_base)) {
uint64_t baseAddress = 0;
StringRef inputValue = arg->getValue();
if (inputValue.getAsInteger(0, baseAddress) || !baseAddress) {
diag << "invalid value for image base " << inputValue << "\n";
return false;
}
ctx->setBaseAddress(baseAddress);
}
if (parsedArgs.hasArg(OPT_merge_strings))
ctx->setMergeCommonStrings(true);
if (parsedArgs.hasArg(OPT_t))
ctx->setLogInputFiles(true);
if (parsedArgs.hasArg(OPT_use_shlib_undefs))
ctx->setUseShlibUndefines(true);
if (auto val = getBool(parsedArgs, OPT_allow_shlib_undefs,
OPT_no_allow_shlib_undefs))
ctx->setAllowShlibUndefines(*val);
if (auto *arg = parsedArgs.getLastArg(OPT_e))
ctx->setEntrySymbolName(arg->getValue());
if (auto *arg = parsedArgs.getLastArg(OPT_output))
ctx->setOutputPath(arg->getValue());
if (parsedArgs.hasArg(OPT_noinhibit_exec))
ctx->setAllowRemainingUndefines(true);
if (auto val = getBool(parsedArgs, OPT_export_dynamic, OPT_no_export_dynamic))
ctx->setExportDynamic(*val);
if (parsedArgs.hasArg(OPT_allow_multiple_definition))
ctx->setAllowDuplicates(true);
if (auto *arg = parsedArgs.getLastArg(OPT_dynamic_linker))
ctx->setInterpreter(arg->getValue());
if (auto *arg = parsedArgs.getLastArg(OPT_init))
ctx->setInitFunction(arg->getValue());
if (auto *arg = parsedArgs.getLastArg(OPT_fini))
ctx->setFiniFunction(arg->getValue());
if (auto *arg = parsedArgs.getLastArg(OPT_output_filetype))
ctx->setOutputFileType(arg->getValue());
// Process ELF/ARM specific options
bool hasArmTarget1Rel = parsedArgs.hasArg(OPT_target1_rel);
bool hasArmTarget1Abs = parsedArgs.hasArg(OPT_target1_abs);
if (triple.getArch() == llvm::Triple::arm) {
if (hasArmTarget1Rel && hasArmTarget1Abs) {
diag << "error: options --target1-rel and --target1-abs"
" can't be used together.\n";
return false;
} else if (hasArmTarget1Rel || hasArmTarget1Abs) {
ctx->setArmTarget1Rel(hasArmTarget1Rel && !hasArmTarget1Abs);
}
} else {
for (const auto *arg : parsedArgs.filtered(OPT_grp_arm_targetopts)) {
diag << "warning: ignoring unsupported ARM/ELF specific argument: "
<< arg->getSpelling() << "\n";
}
}
// Process MIPS specific options.
if (triple.getArch() == llvm::Triple::mips ||
triple.getArch() == llvm::Triple::mipsel ||
triple.getArch() == llvm::Triple::mips64 ||
triple.getArch() == llvm::Triple::mips64el) {
ctx->setMipsPcRelEhRel(parsedArgs.hasArg(OPT_pcrel_eh_reloc));
auto *hashArg = parsedArgs.getLastArg(OPT_hash_style);
if (hashArg && hashArg->getValue() != StringRef("sysv")) {
diag << "error: .gnu.hash is incompatible with the MIPS ABI\n";
return false;
}
}
else {
for (const auto *arg : parsedArgs.filtered(OPT_grp_mips_targetopts)) {
diag << "warning: ignoring unsupported MIPS specific argument: "
<< arg->getSpelling() << "\n";
}
}
for (auto *arg : parsedArgs.filtered(OPT_L))
ctx->addSearchPath(arg->getValue());
// Add the default search directory specific to the target.
if (!parsedArgs.hasArg(OPT_nostdlib))
addPlatformSearchDirs(*ctx, triple, baseTriple);
for (auto *arg : parsedArgs.filtered(OPT_u))
ctx->addInitialUndefinedSymbol(arg->getValue());
for (auto *arg : parsedArgs.filtered(OPT_defsym)) {
StringRef sym, target;
uint64_t addr;
if (parseDefsymAsAbsolute(arg->getValue(), sym, addr)) {
ctx->addInitialAbsoluteSymbol(sym, addr);
} else if (parseDefsymAsAlias(arg->getValue(), sym, target)) {
ctx->addAlias(sym, target);
} else {
diag << "invalid --defsym: " << arg->getValue() << "\n";
return false;
}
}
for (auto *arg : parsedArgs.filtered(OPT_z)) {
StringRef opt = arg->getValue();
if (opt == "muldefs")
ctx->setAllowDuplicates(true);
else if (opt == "now")
ctx->setDTFlag(ELFLinkingContext::DTFlag::DT_NOW);
else if (opt == "origin")
ctx->setDTFlag(ELFLinkingContext::DTFlag::DT_ORIGIN);
else if (opt.startswith("max-page-size")) {
// Parse -z max-page-size option.
// The default page size is considered the minimum page size the user
// can set, check the user input if its atleast the minimum page size
// and does not exceed the maximum page size allowed for the target.
uint64_t maxPageSize = 0;
// Error if the page size user set is less than the maximum page size
// and greather than the default page size and the user page size is a
// modulo of the default page size.
if ((!parseMaxPageSize(opt, maxPageSize)) ||
(maxPageSize < ctx->getPageSize()) ||
(maxPageSize % ctx->getPageSize())) {
diag << "invalid option: " << opt << "\n";
return false;
}
ctx->setMaxPageSize(maxPageSize);
} else {
diag << "warning: ignoring unknown argument for -z: " << opt << "\n";
}
}
for (auto *arg : parsedArgs.filtered(OPT_rpath)) {
SmallVector<StringRef, 2> rpaths;
StringRef(arg->getValue()).split(rpaths, ":");
for (auto path : rpaths)
ctx->addRpath(path);
}
for (auto *arg : parsedArgs.filtered(OPT_rpath_link)) {
SmallVector<StringRef, 2> rpaths;
StringRef(arg->getValue()).split(rpaths, ":");
for (auto path : rpaths)
ctx->addRpathLink(path);
}
// Enable new dynamic tags.
if (parsedArgs.hasArg(OPT_enable_newdtags))
ctx->setEnableNewDtags(true);
// Support --wrap option.
for (auto *arg : parsedArgs.filtered(OPT_wrap))
ctx->addWrapForSymbol(arg->getValue());
// Register possible input file parsers.
ctx->registry().addSupportELFObjects(*ctx);
ctx->registry().addSupportArchives(ctx->logInputFiles());
ctx->registry().addSupportYamlFiles();
if (ctx->allowLinkWithDynamicLibraries())
ctx->registry().addSupportELFDynamicSharedObjects(*ctx);
std::stack<int> groupStack;
int numfiles = 0;
bool asNeeded = false;
bool wholeArchive = false;
// Process files
for (auto arg : parsedArgs) {
switch (arg->getOption().getID()) {
case OPT_no_whole_archive:
wholeArchive = false;
break;
case OPT_whole_archive:
wholeArchive = true;
break;
case OPT_as_needed:
asNeeded = true;
break;
case OPT_no_as_needed:
asNeeded = false;
break;
case OPT_start_group:
groupStack.push(numfiles);
break;
case OPT_end_group: {
if (groupStack.empty()) {
diag << "stray --end-group\n";
return false;
}
int startGroupPos = groupStack.top();
ctx->getNodes().push_back(
llvm::make_unique<GroupEnd>(numfiles - startGroupPos));
groupStack.pop();
break;
}
case OPT_INPUT:
case OPT_l:
case OPT_T: {
bool dashL = (arg->getOption().getID() == OPT_l);
StringRef path = arg->getValue();
ErrorOr<StringRef> pathOrErr = findFile(*ctx, path, dashL);
if (std::error_code ec = pathOrErr.getError()) {
auto file = llvm::make_unique<ErrorFile>(path, ec);
auto node = llvm::make_unique<FileNode>(std::move(file));
node->setAsNeeded(asNeeded);
ctx->getNodes().push_back(std::move(node));
break;
}
StringRef realpath = pathOrErr.get();
bool isScript =
(!path.endswith(".objtxt") && isLinkerScript(realpath, diag));
if (isScript) {
if (ctx->logInputFiles())
diag << path << "\n";
ErrorOr<std::unique_ptr<MemoryBuffer>> mb =
MemoryBuffer::getFileOrSTDIN(realpath);
if (std::error_code ec = mb.getError()) {
diag << "Cannot open " << path << ": " << ec.message() << "\n";
return false;
}
bool nostdlib = parsedArgs.hasArg(OPT_nostdlib);
std::error_code ec =
evalLinkerScript(*ctx, std::move(mb.get()), diag, nostdlib);
if (ec) {
diag << path << ": Error parsing linker script: "
<< ec.message() << "\n";
return false;
}
break;
}
std::vector<std::unique_ptr<File>> files
= loadFile(*ctx, realpath, wholeArchive);
for (std::unique_ptr<File> &file : files) {
if (ctx->logInputFiles())
diag << file->path() << "\n";
auto node = llvm::make_unique<FileNode>(std::move(file));
node->setAsNeeded(asNeeded);
ctx->getNodes().push_back(std::move(node));
}
numfiles += files.size();
break;
}
}
}
if (ctx->getNodes().empty()) {
diag << "No input files\n";
return false;
}
// Set default output file name if the output file was not specified.
if (ctx->outputPath().empty()) {
switch (ctx->outputFileType()) {
case LinkingContext::OutputFileType::YAML:
ctx->setOutputPath("-");
break;
default:
ctx->setOutputPath("a.out");
break;
}
}
// Validate the combination of options used.
if (!ctx->validate(diag))
return false;
// Perform linker script semantic actions
if (auto ec = ctx->linkerScriptSema().perform()) {
diag << "Error in the linker script's semantics: " << ec.message() << "\n";
return false;
}
context.swap(ctx);
return true;
}
int llvm::dlltoolDriverMain(llvm::ArrayRef<const char *> ArgsArr) {
DllOptTable Table;
unsigned MissingIndex;
unsigned MissingCount;
llvm::opt::InputArgList Args =
Table.ParseArgs(ArgsArr.slice(1), MissingIndex, MissingCount);
if (MissingCount) {
llvm::errs() << Args.getArgString(MissingIndex) << ": missing argument\n";
return 1;
}
// Handle when no input or output is specified
if (Args.hasArgNoClaim(OPT_INPUT) ||
(!Args.hasArgNoClaim(OPT_d) && !Args.hasArgNoClaim(OPT_l))) {
Table.PrintHelp(outs(), ArgsArr[0], "dlltool", false);
llvm::outs() << "\nTARGETS: i386, i386:x86-64, arm\n";
return 1;
}
if (!Args.hasArgNoClaim(OPT_m) && Args.hasArgNoClaim(OPT_d)) {
llvm::errs() << "error: no target machine specified\n"
<< "supported targets: i386, i386:x86-64, arm\n";
return 1;
}
for (auto *Arg : Args.filtered(OPT_UNKNOWN))
llvm::errs() << "ignoring unknown argument: " << Arg->getSpelling() << "\n";
if (!Args.hasArg(OPT_d)) {
llvm::errs() << "no definition file specified\n";
return 1;
}
std::unique_ptr<MemoryBuffer> MB =
openFile(Args.getLastArg(OPT_d)->getValue());
if (!MB)
return 1;
if (!MB->getBufferSize()) {
llvm::errs() << "definition file empty\n";
return 1;
}
COFF::MachineTypes Machine = IMAGE_FILE_MACHINE_UNKNOWN;
if (auto *Arg = Args.getLastArg(OPT_m))
Machine = getEmulation(Arg->getValue());
if (Machine == IMAGE_FILE_MACHINE_UNKNOWN) {
llvm::errs() << "unknown target\n";
return 1;
}
Expected<COFFModuleDefinition> Def =
parseCOFFModuleDefinition(*MB, Machine, true);
if (!Def) {
llvm::errs() << "error parsing definition\n"
<< errorToErrorCode(Def.takeError()).message();
return 1;
}
// Do this after the parser because parseCOFFModuleDefinition sets OutputFile.
if (auto *Arg = Args.getLastArg(OPT_D))
Def->OutputFile = Arg->getValue();
if (Def->OutputFile.empty()) {
llvm::errs() << "no output file specified\n";
return 1;
}
std::string Path = Args.getLastArgValue(OPT_l);
if (Path.empty())
Path = getImplibPath(Def->OutputFile);
if (Machine == IMAGE_FILE_MACHINE_I386 && Args.getLastArg(OPT_k)) {
for (COFFShortExport& E : Def->Exports) {
if (E.isWeak() || (!E.Name.empty() && E.Name[0] == '?'))
continue;
E.SymbolName = E.Name;
// Trim off the trailing decoration. Symbols will always have a
// starting prefix here (either _ for cdecl/stdcall, @ for fastcall
// or ? for C++ functions). (Vectorcall functions also will end up having
// a prefix here, even if they shouldn't.)
E.Name = E.Name.substr(0, E.Name.find('@', 1));
// By making sure E.SymbolName != E.Name for decorated symbols,
// writeImportLibrary writes these symbols with the type
// IMPORT_NAME_UNDECORATE.
}
}
if (writeImportLibrary(Def->OutputFile, Path, Def->Exports, Machine, true))
return 1;
return 0;
}
