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709 lines
24 KiB
C++
709 lines
24 KiB
C++
//===- dsymutil.cpp - Debug info dumping utility for llvm -----------------===//
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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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//
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// This program is a utility that aims to be a dropin replacement for Darwin's
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// dsymutil.
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//===----------------------------------------------------------------------===//
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#include "dsymutil.h"
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#include "BinaryHolder.h"
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#include "CFBundle.h"
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#include "DebugMap.h"
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#include "LinkUtils.h"
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#include "MachOUtils.h"
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#include "Reproducer.h"
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#include "llvm/ADT/STLExtras.h"
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#include "llvm/ADT/SmallString.h"
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#include "llvm/ADT/SmallVector.h"
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#include "llvm/ADT/StringExtras.h"
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#include "llvm/ADT/StringRef.h"
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#include "llvm/ADT/Triple.h"
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#include "llvm/DebugInfo/DIContext.h"
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#include "llvm/DebugInfo/DWARF/DWARFContext.h"
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#include "llvm/DebugInfo/DWARF/DWARFVerifier.h"
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#include "llvm/Object/Binary.h"
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#include "llvm/Object/MachO.h"
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#include "llvm/Option/Arg.h"
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#include "llvm/Option/ArgList.h"
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#include "llvm/Option/Option.h"
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#include "llvm/Support/CommandLine.h"
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#include "llvm/Support/FileCollector.h"
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#include "llvm/Support/FileSystem.h"
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#include "llvm/Support/InitLLVM.h"
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#include "llvm/Support/ManagedStatic.h"
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#include "llvm/Support/Path.h"
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#include "llvm/Support/TargetSelect.h"
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#include "llvm/Support/ThreadPool.h"
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#include "llvm/Support/WithColor.h"
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#include "llvm/Support/raw_ostream.h"
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#include "llvm/Support/thread.h"
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#include <algorithm>
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#include <cstdint>
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#include <cstdlib>
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#include <string>
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#include <system_error>
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using namespace llvm;
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using namespace llvm::dsymutil;
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using namespace object;
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namespace {
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enum ID {
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OPT_INVALID = 0, // This is not an option ID.
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#define OPTION(PREFIX, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \
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HELPTEXT, METAVAR, VALUES) \
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OPT_##ID,
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#include "Options.inc"
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#undef OPTION
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};
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#define PREFIX(NAME, VALUE) const char *const NAME[] = VALUE;
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#include "Options.inc"
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#undef PREFIX
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const opt::OptTable::Info InfoTable[] = {
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#define OPTION(PREFIX, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \
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HELPTEXT, METAVAR, VALUES) \
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{ \
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PREFIX, NAME, HELPTEXT, \
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METAVAR, OPT_##ID, opt::Option::KIND##Class, \
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PARAM, FLAGS, OPT_##GROUP, \
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OPT_##ALIAS, ALIASARGS, VALUES},
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#include "Options.inc"
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#undef OPTION
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};
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class DsymutilOptTable : public opt::OptTable {
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public:
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DsymutilOptTable() : OptTable(InfoTable) {}
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};
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} // namespace
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struct DsymutilOptions {
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bool DumpDebugMap = false;
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bool DumpStab = false;
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bool Flat = false;
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bool InputIsYAMLDebugMap = false;
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bool PaperTrailWarnings = false;
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bool Verify = false;
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bool ForceKeepFunctionForStatic = false;
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std::string SymbolMap;
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std::string OutputFile;
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std::string Toolchain;
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std::string ReproducerPath;
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std::vector<std::string> Archs;
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std::vector<std::string> InputFiles;
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unsigned NumThreads;
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ReproducerMode ReproMode = ReproducerMode::Off;
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dsymutil::LinkOptions LinkOpts;
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};
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/// Return a list of input files. This function has logic for dealing with the
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/// special case where we might have dSYM bundles as input. The function
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/// returns an error when the directory structure doesn't match that of a dSYM
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/// bundle.
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static Expected<std::vector<std::string>> getInputs(opt::InputArgList &Args,
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bool DsymAsInput) {
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std::vector<std::string> InputFiles;
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for (auto *File : Args.filtered(OPT_INPUT))
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InputFiles.push_back(File->getValue());
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if (!DsymAsInput)
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return InputFiles;
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// If we are updating, we might get dSYM bundles as input.
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std::vector<std::string> Inputs;
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for (const auto &Input : InputFiles) {
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if (!sys::fs::is_directory(Input)) {
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Inputs.push_back(Input);
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continue;
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}
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// Make sure that we're dealing with a dSYM bundle.
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SmallString<256> BundlePath(Input);
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sys::path::append(BundlePath, "Contents", "Resources", "DWARF");
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if (!sys::fs::is_directory(BundlePath))
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return make_error<StringError>(
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Input + " is a directory, but doesn't look like a dSYM bundle.",
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inconvertibleErrorCode());
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// Create a directory iterator to iterate over all the entries in the
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// bundle.
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std::error_code EC;
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sys::fs::directory_iterator DirIt(BundlePath, EC);
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sys::fs::directory_iterator DirEnd;
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if (EC)
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return errorCodeToError(EC);
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// Add each entry to the list of inputs.
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while (DirIt != DirEnd) {
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Inputs.push_back(DirIt->path());
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DirIt.increment(EC);
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if (EC)
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return errorCodeToError(EC);
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}
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}
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return Inputs;
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}
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// Verify that the given combination of options makes sense.
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static Error verifyOptions(const DsymutilOptions &Options) {
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if (Options.InputFiles.empty()) {
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return make_error<StringError>("no input files specified",
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errc::invalid_argument);
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}
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if (Options.LinkOpts.Update && llvm::is_contained(Options.InputFiles, "-")) {
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// FIXME: We cannot use stdin for an update because stdin will be
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// consumed by the BinaryHolder during the debugmap parsing, and
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// then we will want to consume it again in DwarfLinker. If we
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// used a unique BinaryHolder object that could cache multiple
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// binaries this restriction would go away.
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return make_error<StringError>(
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"standard input cannot be used as input for a dSYM update.",
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errc::invalid_argument);
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}
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if (!Options.Flat && Options.OutputFile == "-")
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return make_error<StringError>(
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"cannot emit to standard output without --flat.",
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errc::invalid_argument);
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if (Options.InputFiles.size() > 1 && Options.Flat &&
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!Options.OutputFile.empty())
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return make_error<StringError>(
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"cannot use -o with multiple inputs in flat mode.",
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errc::invalid_argument);
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if (Options.PaperTrailWarnings && Options.InputIsYAMLDebugMap)
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return make_error<StringError>(
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"paper trail warnings are not supported for YAML input.",
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errc::invalid_argument);
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if (!Options.ReproducerPath.empty() &&
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Options.ReproMode != ReproducerMode::Use)
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return make_error<StringError>(
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"cannot combine --gen-reproducer and --use-reproducer.",
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errc::invalid_argument);
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return Error::success();
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}
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static Expected<AccelTableKind> getAccelTableKind(opt::InputArgList &Args) {
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if (opt::Arg *Accelerator = Args.getLastArg(OPT_accelerator)) {
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StringRef S = Accelerator->getValue();
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if (S == "Apple")
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return AccelTableKind::Apple;
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if (S == "Dwarf")
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return AccelTableKind::Dwarf;
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if (S == "Pub")
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return AccelTableKind::Pub;
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if (S == "Default")
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return AccelTableKind::Default;
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return make_error<StringError>(
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"invalid accelerator type specified: '" + S +
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"'. Support values are 'Apple', 'Dwarf', 'Pub' and 'Default'.",
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inconvertibleErrorCode());
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}
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return AccelTableKind::Default;
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}
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/// Parses the command line options into the LinkOptions struct and performs
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/// some sanity checking. Returns an error in case the latter fails.
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static Expected<DsymutilOptions> getOptions(opt::InputArgList &Args) {
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DsymutilOptions Options;
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Options.DumpDebugMap = Args.hasArg(OPT_dump_debug_map);
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Options.DumpStab = Args.hasArg(OPT_symtab);
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Options.Flat = Args.hasArg(OPT_flat);
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Options.InputIsYAMLDebugMap = Args.hasArg(OPT_yaml_input);
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Options.PaperTrailWarnings = Args.hasArg(OPT_papertrail);
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Options.Verify = Args.hasArg(OPT_verify);
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Options.LinkOpts.NoODR = Args.hasArg(OPT_no_odr);
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Options.LinkOpts.NoOutput = Args.hasArg(OPT_no_output);
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Options.LinkOpts.NoTimestamp = Args.hasArg(OPT_no_swiftmodule_timestamp);
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Options.LinkOpts.Update = Args.hasArg(OPT_update);
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Options.LinkOpts.Verbose = Args.hasArg(OPT_verbose);
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Options.LinkOpts.Statistics = Args.hasArg(OPT_statistics);
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Options.LinkOpts.KeepFunctionForStatic =
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Args.hasArg(OPT_keep_func_for_static);
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if (opt::Arg *ReproducerPath = Args.getLastArg(OPT_use_reproducer)) {
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Options.ReproMode = ReproducerMode::Use;
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Options.ReproducerPath = ReproducerPath->getValue();
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}
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if (Args.hasArg(OPT_gen_reproducer))
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Options.ReproMode = ReproducerMode::Generate;
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if (Expected<AccelTableKind> AccelKind = getAccelTableKind(Args)) {
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Options.LinkOpts.TheAccelTableKind = *AccelKind;
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} else {
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return AccelKind.takeError();
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}
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if (opt::Arg *SymbolMap = Args.getLastArg(OPT_symbolmap))
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Options.SymbolMap = SymbolMap->getValue();
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if (Args.hasArg(OPT_symbolmap))
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Options.LinkOpts.Update = true;
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if (Expected<std::vector<std::string>> InputFiles =
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getInputs(Args, Options.LinkOpts.Update)) {
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Options.InputFiles = std::move(*InputFiles);
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} else {
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return InputFiles.takeError();
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}
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for (auto *Arch : Args.filtered(OPT_arch))
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Options.Archs.push_back(Arch->getValue());
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if (opt::Arg *OsoPrependPath = Args.getLastArg(OPT_oso_prepend_path))
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Options.LinkOpts.PrependPath = OsoPrependPath->getValue();
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for (const auto &Arg : Args.getAllArgValues(OPT_object_prefix_map)) {
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auto Split = StringRef(Arg).split('=');
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Options.LinkOpts.ObjectPrefixMap.insert(
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{std::string(Split.first), std::string(Split.second)});
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}
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if (opt::Arg *OutputFile = Args.getLastArg(OPT_output))
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Options.OutputFile = OutputFile->getValue();
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if (opt::Arg *Toolchain = Args.getLastArg(OPT_toolchain))
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Options.Toolchain = Toolchain->getValue();
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if (Args.hasArg(OPT_assembly))
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Options.LinkOpts.FileType = OutputFileType::Assembly;
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if (opt::Arg *NumThreads = Args.getLastArg(OPT_threads))
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Options.LinkOpts.Threads = atoi(NumThreads->getValue());
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else
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Options.LinkOpts.Threads = 0; // Use all available hardware threads
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if (Options.DumpDebugMap || Options.LinkOpts.Verbose)
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Options.LinkOpts.Threads = 1;
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if (getenv("RC_DEBUG_OPTIONS"))
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Options.PaperTrailWarnings = true;
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if (opt::Arg *RemarksPrependPath = Args.getLastArg(OPT_remarks_prepend_path))
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Options.LinkOpts.RemarksPrependPath = RemarksPrependPath->getValue();
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if (opt::Arg *RemarksOutputFormat =
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Args.getLastArg(OPT_remarks_output_format)) {
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if (Expected<remarks::Format> FormatOrErr =
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remarks::parseFormat(RemarksOutputFormat->getValue()))
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Options.LinkOpts.RemarksFormat = *FormatOrErr;
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else
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return FormatOrErr.takeError();
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}
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if (Error E = verifyOptions(Options))
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return std::move(E);
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return Options;
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}
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static Error createPlistFile(StringRef Bin, StringRef BundleRoot,
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StringRef Toolchain) {
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// Create plist file to write to.
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SmallString<128> InfoPlist(BundleRoot);
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sys::path::append(InfoPlist, "Contents/Info.plist");
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std::error_code EC;
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raw_fd_ostream PL(InfoPlist, EC, sys::fs::OF_TextWithCRLF);
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if (EC)
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return make_error<StringError>(
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"cannot create Plist: " + toString(errorCodeToError(EC)), EC);
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CFBundleInfo BI = getBundleInfo(Bin);
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if (BI.IDStr.empty()) {
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StringRef BundleID = *sys::path::rbegin(BundleRoot);
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if (sys::path::extension(BundleRoot) == ".dSYM")
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BI.IDStr = std::string(sys::path::stem(BundleID));
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else
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BI.IDStr = std::string(BundleID);
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}
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// Print out information to the plist file.
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PL << "<?xml version=\"1.0\" encoding=\"UTF-8\"\?>\n"
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<< "<!DOCTYPE plist PUBLIC \"-//Apple Computer//DTD PLIST 1.0//EN\" "
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<< "\"http://www.apple.com/DTDs/PropertyList-1.0.dtd\">\n"
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<< "<plist version=\"1.0\">\n"
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<< "\t<dict>\n"
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<< "\t\t<key>CFBundleDevelopmentRegion</key>\n"
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<< "\t\t<string>English</string>\n"
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<< "\t\t<key>CFBundleIdentifier</key>\n"
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<< "\t\t<string>com.apple.xcode.dsym.";
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printHTMLEscaped(BI.IDStr, PL);
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PL << "</string>\n"
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<< "\t\t<key>CFBundleInfoDictionaryVersion</key>\n"
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<< "\t\t<string>6.0</string>\n"
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<< "\t\t<key>CFBundlePackageType</key>\n"
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<< "\t\t<string>dSYM</string>\n"
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<< "\t\t<key>CFBundleSignature</key>\n"
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<< "\t\t<string>\?\?\?\?</string>\n";
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if (!BI.OmitShortVersion()) {
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PL << "\t\t<key>CFBundleShortVersionString</key>\n";
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PL << "\t\t<string>";
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printHTMLEscaped(BI.ShortVersionStr, PL);
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PL << "</string>\n";
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}
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PL << "\t\t<key>CFBundleVersion</key>\n";
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PL << "\t\t<string>";
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printHTMLEscaped(BI.VersionStr, PL);
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PL << "</string>\n";
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if (!Toolchain.empty()) {
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PL << "\t\t<key>Toolchain</key>\n";
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PL << "\t\t<string>";
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printHTMLEscaped(Toolchain, PL);
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PL << "</string>\n";
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}
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PL << "\t</dict>\n"
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<< "</plist>\n";
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PL.close();
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return Error::success();
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}
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static Error createBundleDir(StringRef BundleBase) {
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SmallString<128> Bundle(BundleBase);
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sys::path::append(Bundle, "Contents", "Resources", "DWARF");
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if (std::error_code EC =
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create_directories(Bundle.str(), true, sys::fs::perms::all_all))
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return make_error<StringError>(
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"cannot create bundle: " + toString(errorCodeToError(EC)), EC);
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return Error::success();
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}
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static bool verify(StringRef OutputFile, StringRef Arch, bool Verbose) {
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if (OutputFile == "-") {
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WithColor::warning() << "verification skipped for " << Arch
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<< "because writing to stdout.\n";
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return true;
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}
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Expected<OwningBinary<Binary>> BinOrErr = createBinary(OutputFile);
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if (!BinOrErr) {
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WithColor::error() << OutputFile << ": " << toString(BinOrErr.takeError());
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return false;
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}
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Binary &Binary = *BinOrErr.get().getBinary();
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if (auto *Obj = dyn_cast<MachOObjectFile>(&Binary)) {
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raw_ostream &os = Verbose ? errs() : nulls();
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os << "Verifying DWARF for architecture: " << Arch << "\n";
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std::unique_ptr<DWARFContext> DICtx = DWARFContext::create(*Obj);
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DIDumpOptions DumpOpts;
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bool success = DICtx->verify(os, DumpOpts.noImplicitRecursion());
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if (!success)
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WithColor::error() << "verification failed for " << Arch << '\n';
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return success;
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}
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return false;
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}
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namespace {
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struct OutputLocation {
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OutputLocation(std::string DWARFFile, Optional<std::string> ResourceDir = {})
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: DWARFFile(DWARFFile), ResourceDir(ResourceDir) {}
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/// This method is a workaround for older compilers.
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Optional<std::string> getResourceDir() const { return ResourceDir; }
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std::string DWARFFile;
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Optional<std::string> ResourceDir;
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};
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} // namespace
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static Expected<OutputLocation>
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getOutputFileName(StringRef InputFile, const DsymutilOptions &Options) {
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if (Options.OutputFile == "-")
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return OutputLocation(Options.OutputFile);
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// When updating, do in place replacement.
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if (Options.OutputFile.empty() &&
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(Options.LinkOpts.Update || !Options.SymbolMap.empty()))
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return OutputLocation(std::string(InputFile));
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// When dumping the debug map, just return an empty output location. This
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// allows us to compute the output location once.
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if (Options.DumpDebugMap)
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return OutputLocation("");
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// If a flat dSYM has been requested, things are pretty simple.
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if (Options.Flat) {
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if (Options.OutputFile.empty()) {
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if (InputFile == "-")
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return OutputLocation{"a.out.dwarf", {}};
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return OutputLocation((InputFile + ".dwarf").str());
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}
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return OutputLocation(Options.OutputFile);
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}
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// We need to create/update a dSYM bundle.
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// A bundle hierarchy looks like this:
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// <bundle name>.dSYM/
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// Contents/
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// Info.plist
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// Resources/
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// DWARF/
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// <DWARF file(s)>
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std::string DwarfFile =
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std::string(InputFile == "-" ? StringRef("a.out") : InputFile);
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SmallString<128> Path(Options.OutputFile);
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if (Path.empty())
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Path = DwarfFile + ".dSYM";
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if (!Options.LinkOpts.NoOutput) {
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if (auto E = createBundleDir(Path))
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return std::move(E);
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if (auto E = createPlistFile(DwarfFile, Path, Options.Toolchain))
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return std::move(E);
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}
|
|
|
|
sys::path::append(Path, "Contents", "Resources");
|
|
std::string ResourceDir = std::string(Path.str());
|
|
sys::path::append(Path, "DWARF", sys::path::filename(DwarfFile));
|
|
return OutputLocation(std::string(Path.str()), ResourceDir);
|
|
}
|
|
|
|
int main(int argc, char **argv) {
|
|
InitLLVM X(argc, argv);
|
|
|
|
// Parse arguments.
|
|
DsymutilOptTable T;
|
|
unsigned MAI;
|
|
unsigned MAC;
|
|
ArrayRef<const char *> ArgsArr = makeArrayRef(argv + 1, argc - 1);
|
|
opt::InputArgList Args = T.ParseArgs(ArgsArr, MAI, MAC);
|
|
|
|
void *P = (void *)(intptr_t)getOutputFileName;
|
|
std::string SDKPath = sys::fs::getMainExecutable(argv[0], P);
|
|
SDKPath = std::string(sys::path::parent_path(SDKPath));
|
|
|
|
for (auto *Arg : Args.filtered(OPT_UNKNOWN)) {
|
|
WithColor::warning() << "ignoring unknown option: " << Arg->getSpelling()
|
|
<< '\n';
|
|
}
|
|
|
|
if (Args.hasArg(OPT_help)) {
|
|
T.printHelp(
|
|
outs(), (std::string(argv[0]) + " [options] <input files>").c_str(),
|
|
"manipulate archived DWARF debug symbol files.\n\n"
|
|
"dsymutil links the DWARF debug information found in the object files\n"
|
|
"for the executable <input file> by using debug symbols information\n"
|
|
"contained in its symbol table.\n",
|
|
false);
|
|
return EXIT_SUCCESS;
|
|
}
|
|
|
|
if (Args.hasArg(OPT_version)) {
|
|
cl::PrintVersionMessage();
|
|
return EXIT_SUCCESS;
|
|
}
|
|
|
|
auto OptionsOrErr = getOptions(Args);
|
|
if (!OptionsOrErr) {
|
|
WithColor::error() << toString(OptionsOrErr.takeError());
|
|
return EXIT_FAILURE;
|
|
}
|
|
|
|
auto &Options = *OptionsOrErr;
|
|
|
|
InitializeAllTargetInfos();
|
|
InitializeAllTargetMCs();
|
|
InitializeAllTargets();
|
|
InitializeAllAsmPrinters();
|
|
|
|
auto Repro =
|
|
Reproducer::createReproducer(Options.ReproMode, Options.ReproducerPath);
|
|
if (!Repro) {
|
|
WithColor::error() << toString(Repro.takeError());
|
|
return EXIT_FAILURE;
|
|
}
|
|
|
|
Options.LinkOpts.VFS = (*Repro)->getVFS();
|
|
|
|
for (const auto &Arch : Options.Archs)
|
|
if (Arch != "*" && Arch != "all" &&
|
|
!object::MachOObjectFile::isValidArch(Arch)) {
|
|
WithColor::error() << "unsupported cpu architecture: '" << Arch << "'\n";
|
|
return EXIT_FAILURE;
|
|
}
|
|
|
|
SymbolMapLoader SymMapLoader(Options.SymbolMap);
|
|
|
|
for (auto &InputFile : Options.InputFiles) {
|
|
// Dump the symbol table for each input file and requested arch
|
|
if (Options.DumpStab) {
|
|
if (!dumpStab(Options.LinkOpts.VFS, InputFile, Options.Archs,
|
|
Options.LinkOpts.PrependPath))
|
|
return EXIT_FAILURE;
|
|
continue;
|
|
}
|
|
|
|
auto DebugMapPtrsOrErr =
|
|
parseDebugMap(Options.LinkOpts.VFS, InputFile, Options.Archs,
|
|
Options.LinkOpts.PrependPath, Options.PaperTrailWarnings,
|
|
Options.LinkOpts.Verbose, Options.InputIsYAMLDebugMap);
|
|
|
|
if (auto EC = DebugMapPtrsOrErr.getError()) {
|
|
WithColor::error() << "cannot parse the debug map for '" << InputFile
|
|
<< "': " << EC.message() << '\n';
|
|
return EXIT_FAILURE;
|
|
}
|
|
|
|
// Remember the number of debug maps that are being processed to decide how
|
|
// to name the remark files.
|
|
Options.LinkOpts.NumDebugMaps = DebugMapPtrsOrErr->size();
|
|
|
|
if (Options.LinkOpts.Update) {
|
|
// The debug map should be empty. Add one object file corresponding to
|
|
// the input file.
|
|
for (auto &Map : *DebugMapPtrsOrErr)
|
|
Map->addDebugMapObject(InputFile,
|
|
sys::TimePoint<std::chrono::seconds>());
|
|
}
|
|
|
|
// Ensure that the debug map is not empty (anymore).
|
|
if (DebugMapPtrsOrErr->empty()) {
|
|
WithColor::error() << "no architecture to link\n";
|
|
return EXIT_FAILURE;
|
|
}
|
|
|
|
// Shared a single binary holder for all the link steps.
|
|
BinaryHolder BinHolder(Options.LinkOpts.VFS);
|
|
|
|
// Compute the output location and update the resource directory.
|
|
Expected<OutputLocation> OutputLocationOrErr =
|
|
getOutputFileName(InputFile, Options);
|
|
if (!OutputLocationOrErr) {
|
|
WithColor::error() << toString(OutputLocationOrErr.takeError());
|
|
return EXIT_FAILURE;
|
|
}
|
|
Options.LinkOpts.ResourceDir = OutputLocationOrErr->getResourceDir();
|
|
|
|
// Statistics only require different architectures to be processed
|
|
// sequentially, the link itself can still happen in parallel. Change the
|
|
// thread pool strategy here instead of modifying LinkOpts.Threads.
|
|
ThreadPoolStrategy S = hardware_concurrency(
|
|
Options.LinkOpts.Statistics ? 1 : Options.LinkOpts.Threads);
|
|
if (Options.LinkOpts.Threads == 0) {
|
|
// If NumThreads is not specified, create one thread for each input, up to
|
|
// the number of hardware threads.
|
|
S.ThreadsRequested = DebugMapPtrsOrErr->size();
|
|
S.Limit = true;
|
|
}
|
|
ThreadPool Threads(S);
|
|
|
|
// If there is more than one link to execute, we need to generate
|
|
// temporary files.
|
|
const bool NeedsTempFiles =
|
|
!Options.DumpDebugMap && (Options.OutputFile != "-") &&
|
|
(DebugMapPtrsOrErr->size() != 1 || Options.LinkOpts.Update);
|
|
const bool Verify = Options.Verify && !Options.LinkOpts.NoOutput;
|
|
|
|
SmallVector<MachOUtils::ArchAndFile, 4> TempFiles;
|
|
std::atomic_char AllOK(1);
|
|
for (auto &Map : *DebugMapPtrsOrErr) {
|
|
if (Options.LinkOpts.Verbose || Options.DumpDebugMap)
|
|
Map->print(outs());
|
|
|
|
if (Options.DumpDebugMap)
|
|
continue;
|
|
|
|
if (!Options.SymbolMap.empty())
|
|
Options.LinkOpts.Translator = SymMapLoader.Load(InputFile, *Map);
|
|
|
|
if (Map->begin() == Map->end())
|
|
WithColor::warning()
|
|
<< "no debug symbols in executable (-arch "
|
|
<< MachOUtils::getArchName(Map->getTriple().getArchName()) << ")\n";
|
|
|
|
// Using a std::shared_ptr rather than std::unique_ptr because move-only
|
|
// types don't work with std::bind in the ThreadPool implementation.
|
|
std::shared_ptr<raw_fd_ostream> OS;
|
|
|
|
std::string OutputFile = OutputLocationOrErr->DWARFFile;
|
|
if (NeedsTempFiles) {
|
|
TempFiles.emplace_back(Map->getTriple().getArchName().str());
|
|
|
|
auto E = TempFiles.back().createTempFile();
|
|
if (E) {
|
|
WithColor::error() << toString(std::move(E));
|
|
return EXIT_FAILURE;
|
|
}
|
|
|
|
auto &TempFile = *(TempFiles.back().File);
|
|
OS = std::make_shared<raw_fd_ostream>(TempFile.FD,
|
|
/*shouldClose*/ false);
|
|
OutputFile = TempFile.TmpName;
|
|
} else {
|
|
std::error_code EC;
|
|
OS = std::make_shared<raw_fd_ostream>(
|
|
Options.LinkOpts.NoOutput ? "-" : OutputFile, EC, sys::fs::OF_None);
|
|
if (EC) {
|
|
WithColor::error() << OutputFile << ": " << EC.message();
|
|
return EXIT_FAILURE;
|
|
}
|
|
}
|
|
|
|
auto LinkLambda = [&, OutputFile](std::shared_ptr<raw_fd_ostream> Stream,
|
|
LinkOptions Options) {
|
|
AllOK.fetch_and(
|
|
linkDwarf(*Stream, BinHolder, *Map, std::move(Options)));
|
|
Stream->flush();
|
|
if (Verify)
|
|
AllOK.fetch_and(verify(OutputFile, Map->getTriple().getArchName(),
|
|
Options.Verbose));
|
|
};
|
|
|
|
// FIXME: The DwarfLinker can have some very deep recursion that can max
|
|
// out the (significantly smaller) stack when using threads. We don't
|
|
// want this limitation when we only have a single thread.
|
|
if (S.ThreadsRequested == 1)
|
|
LinkLambda(OS, Options.LinkOpts);
|
|
else
|
|
Threads.async(LinkLambda, OS, Options.LinkOpts);
|
|
}
|
|
|
|
Threads.wait();
|
|
|
|
if (!AllOK)
|
|
return EXIT_FAILURE;
|
|
|
|
if (NeedsTempFiles) {
|
|
if (!MachOUtils::generateUniversalBinary(TempFiles,
|
|
OutputLocationOrErr->DWARFFile,
|
|
Options.LinkOpts, SDKPath))
|
|
return EXIT_FAILURE;
|
|
}
|
|
|
|
// The Mach-O object file format is limited to 4GB. Make sure that we print
|
|
// an error when we emit an invalid Mach-O companion file. Leave the
|
|
// invalid object file around on disk for inspection.
|
|
ErrorOr<vfs::Status> stat =
|
|
Options.LinkOpts.VFS->status(OutputLocationOrErr->DWARFFile);
|
|
if (stat) {
|
|
if (stat->getSize() > std::numeric_limits<uint32_t>::max()) {
|
|
WithColor::error() << "the linked debug info exceeds the 4GB Mach-O "
|
|
"object file format.";
|
|
return EXIT_FAILURE;
|
|
}
|
|
}
|
|
}
|
|
|
|
return EXIT_SUCCESS;
|
|
}
|