| //===-- llvm-symbolizer.cpp - Simple addr2line-like symbolizer ------------===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // This utility works much like "addr2line". It is able of transforming |
| // tuples (module name, module offset) to code locations (function name, |
| // file, line number, column number). It is targeted for compiler-rt tools |
| // (especially AddressSanitizer and ThreadSanitizer) that can use it |
| // to symbolize stack traces in their error reports. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "llvm/ADT/StringRef.h" |
| #include "llvm/DebugInfo/Symbolize/DIPrinter.h" |
| #include "llvm/DebugInfo/Symbolize/Symbolize.h" |
| #include "llvm/Support/COM.h" |
| #include "llvm/Support/CommandLine.h" |
| #include "llvm/Support/Debug.h" |
| #include "llvm/Support/FileSystem.h" |
| #include "llvm/Support/InitLLVM.h" |
| #include "llvm/Support/Path.h" |
| #include "llvm/Support/raw_ostream.h" |
| #include <cstdio> |
| #include <cstring> |
| #include <string> |
| |
| using namespace llvm; |
| using namespace symbolize; |
| |
| static cl::opt<bool> |
| ClUseSymbolTable("use-symbol-table", cl::init(true), |
| cl::desc("Prefer names in symbol table to names " |
| "in debug info")); |
| |
| static cl::opt<FunctionNameKind> ClPrintFunctions( |
| "functions", cl::init(FunctionNameKind::LinkageName), |
| cl::desc("Print function name for a given address"), cl::ValueOptional, |
| cl::values(clEnumValN(FunctionNameKind::None, "none", "omit function name"), |
| clEnumValN(FunctionNameKind::ShortName, "short", |
| "print short function name"), |
| clEnumValN(FunctionNameKind::LinkageName, "linkage", |
| "print function linkage name (default)"), |
| // Sentinel value for unspecified value. |
| clEnumValN(FunctionNameKind::LinkageName, "", ""))); |
| static cl::alias ClPrintFunctionsShort("f", cl::desc("Alias for -functions"), |
| cl::NotHidden, cl::Grouping, |
| cl::aliasopt(ClPrintFunctions)); |
| |
| static cl::opt<bool> |
| ClUseRelativeAddress("relative-address", cl::init(false), |
| cl::desc("Interpret addresses as relative addresses"), |
| cl::ReallyHidden); |
| |
| static cl::opt<bool> |
| ClPrintInlining("inlining", cl::init(true), |
| cl::desc("Print all inlined frames for a given address")); |
| static cl::alias |
| ClPrintInliningAliasI("i", cl::desc("Alias for -inlining"), |
| cl::NotHidden, cl::aliasopt(ClPrintInlining), |
| cl::Grouping); |
| static cl::alias |
| ClPrintInliningAliasInlines("inlines", cl::desc("Alias for -inlining"), |
| cl::NotHidden, cl::aliasopt(ClPrintInlining)); |
| |
| // -basenames, -s |
| static cl::opt<bool> ClBasenames("basenames", cl::init(false), |
| cl::desc("Strip directory names from paths")); |
| static cl::alias ClBasenamesShort("s", cl::desc("Alias for -basenames"), |
| cl::NotHidden, cl::aliasopt(ClBasenames)); |
| |
| // -demangle, -C, -no-demangle |
| static cl::opt<bool> |
| ClDemangle("demangle", cl::init(true), cl::desc("Demangle function names")); |
| static cl::alias |
| ClDemangleShort("C", cl::desc("Alias for -demangle"), |
| cl::NotHidden, cl::aliasopt(ClDemangle), cl::Grouping); |
| static cl::opt<bool> |
| ClNoDemangle("no-demangle", cl::init(false), |
| cl::desc("Don't demangle function names")); |
| |
| static cl::opt<std::string> ClDefaultArch("default-arch", cl::init(""), |
| cl::desc("Default architecture " |
| "(for multi-arch objects)")); |
| |
| // -obj, -exe, -e |
| static cl::opt<std::string> |
| ClBinaryName("obj", cl::init(""), |
| cl::desc("Path to object file to be symbolized (if not provided, " |
| "object file should be specified for each input line)")); |
| static cl::alias |
| ClBinaryNameAliasExe("exe", cl::desc("Alias for -obj"), |
| cl::NotHidden, cl::aliasopt(ClBinaryName)); |
| static cl::alias ClBinaryNameAliasE("e", cl::desc("Alias for -obj"), |
| cl::NotHidden, cl::Grouping, cl::Prefix, |
| cl::aliasopt(ClBinaryName)); |
| |
| static cl::opt<std::string> |
| ClDwpName("dwp", cl::init(""), |
| cl::desc("Path to DWP file to be use for any split CUs")); |
| |
| static cl::list<std::string> |
| ClDsymHint("dsym-hint", cl::ZeroOrMore, |
| cl::desc("Path to .dSYM bundles to search for debug info for the " |
| "object files")); |
| |
| // -print-address, -addresses, -a |
| static cl::opt<bool> |
| ClPrintAddress("print-address", cl::init(false), |
| cl::desc("Show address before line information")); |
| static cl::alias |
| ClPrintAddressAliasAddresses("addresses", cl::desc("Alias for -print-address"), |
| cl::NotHidden, cl::aliasopt(ClPrintAddress)); |
| static cl::alias |
| ClPrintAddressAliasA("a", cl::desc("Alias for -print-address"), |
| cl::NotHidden, cl::aliasopt(ClPrintAddress), cl::Grouping); |
| |
| // -pretty-print, -p |
| static cl::opt<bool> |
| ClPrettyPrint("pretty-print", cl::init(false), |
| cl::desc("Make the output more human friendly")); |
| static cl::alias ClPrettyPrintShort("p", cl::desc("Alias for -pretty-print"), |
| cl::NotHidden, |
| cl::aliasopt(ClPrettyPrint), cl::Grouping); |
| |
| static cl::opt<int> ClPrintSourceContextLines( |
| "print-source-context-lines", cl::init(0), |
| cl::desc("Print N number of source file context")); |
| |
| static cl::opt<bool> ClVerbose("verbose", cl::init(false), |
| cl::desc("Print verbose line info")); |
| |
| // -adjust-vma |
| static cl::opt<unsigned long long> |
| ClAdjustVMA("adjust-vma", cl::init(0), cl::value_desc("offset"), |
| cl::desc("Add specified offset to object file addresses")); |
| |
| static cl::list<std::string> ClInputAddresses(cl::Positional, |
| cl::desc("<input addresses>..."), |
| cl::ZeroOrMore); |
| |
| static cl::opt<std::string> |
| ClFallbackDebugPath("fallback-debug-path", cl::init(""), |
| cl::desc("Fallback path for debug binaries.")); |
| |
| static cl::opt<DIPrinter::OutputStyle> |
| ClOutputStyle("output-style", cl::init(DIPrinter::OutputStyle::LLVM), |
| cl::desc("Specify print style"), cl::Hidden, |
| cl::values(clEnumValN(DIPrinter::OutputStyle::LLVM, "LLVM", |
| "LLVM default style"), |
| clEnumValN(DIPrinter::OutputStyle::GNU, "GNU", |
| "GNU addr2line style"))); |
| |
| template<typename T> |
| static bool error(Expected<T> &ResOrErr) { |
| if (ResOrErr) |
| return false; |
| logAllUnhandledErrors(ResOrErr.takeError(), errs(), |
| "LLVMSymbolizer: error reading file: "); |
| return true; |
| } |
| |
| static bool parseCommand(StringRef InputString, bool &IsData, |
| std::string &ModuleName, uint64_t &ModuleOffset) { |
| const char kDelimiters[] = " \n\r"; |
| ModuleName = ""; |
| if (InputString.consume_front("CODE ")) { |
| IsData = false; |
| } else if (InputString.consume_front("DATA ")) { |
| IsData = true; |
| } else { |
| // If no cmd, assume it's CODE. |
| IsData = false; |
| } |
| const char *pos = InputString.data(); |
| // Skip delimiters and parse input filename (if needed). |
| if (ClBinaryName.empty()) { |
| pos += strspn(pos, kDelimiters); |
| if (*pos == '"' || *pos == '\'') { |
| char quote = *pos; |
| pos++; |
| const char *end = strchr(pos, quote); |
| if (!end) |
| return false; |
| ModuleName = std::string(pos, end - pos); |
| pos = end + 1; |
| } else { |
| int name_length = strcspn(pos, kDelimiters); |
| ModuleName = std::string(pos, name_length); |
| pos += name_length; |
| } |
| } else { |
| ModuleName = ClBinaryName; |
| } |
| // Skip delimiters and parse module offset. |
| pos += strspn(pos, kDelimiters); |
| int offset_length = strcspn(pos, kDelimiters); |
| return !StringRef(pos, offset_length).getAsInteger(0, ModuleOffset); |
| } |
| |
| static void symbolizeInput(StringRef InputString, LLVMSymbolizer &Symbolizer, |
| DIPrinter &Printer) { |
| bool IsData = false; |
| std::string ModuleName; |
| uint64_t Offset = 0; |
| if (!parseCommand(StringRef(InputString), IsData, ModuleName, Offset)) { |
| outs() << InputString; |
| return; |
| } |
| |
| if (ClPrintAddress) { |
| outs() << "0x"; |
| outs().write_hex(Offset); |
| StringRef Delimiter = ClPrettyPrint ? ": " : "\n"; |
| outs() << Delimiter; |
| } |
| Offset -= ClAdjustVMA; |
| if (IsData) { |
| auto ResOrErr = Symbolizer.symbolizeData( |
| ModuleName, {Offset, object::SectionedAddress::UndefSection}); |
| Printer << (error(ResOrErr) ? DIGlobal() : ResOrErr.get()); |
| } else if (ClPrintInlining) { |
| auto ResOrErr = Symbolizer.symbolizeInlinedCode( |
| ModuleName, {Offset, object::SectionedAddress::UndefSection}, |
| ClDwpName); |
| Printer << (error(ResOrErr) ? DIInliningInfo() : ResOrErr.get()); |
| } else { |
| auto ResOrErr = Symbolizer.symbolizeCode( |
| ModuleName, {Offset, object::SectionedAddress::UndefSection}, |
| ClDwpName); |
| Printer << (error(ResOrErr) ? DILineInfo() : ResOrErr.get()); |
| } |
| outs() << "\n"; |
| outs().flush(); |
| } |
| |
| int main(int argc, char **argv) { |
| InitLLVM X(argc, argv); |
| |
| llvm::sys::InitializeCOMRAII COM(llvm::sys::COMThreadingMode::MultiThreaded); |
| cl::ParseCommandLineOptions(argc, argv, "llvm-symbolizer\n"); |
| |
| // If both --demangle and --no-demangle are specified then pick the last one. |
| if (ClNoDemangle.getPosition() > ClDemangle.getPosition()) |
| ClDemangle = !ClNoDemangle; |
| |
| LLVMSymbolizer::Options Opts(ClPrintFunctions, ClUseSymbolTable, ClDemangle, |
| ClUseRelativeAddress, ClDefaultArch, |
| ClFallbackDebugPath); |
| |
| for (const auto &hint : ClDsymHint) { |
| if (sys::path::extension(hint) == ".dSYM") { |
| Opts.DsymHints.push_back(hint); |
| } else { |
| errs() << "Warning: invalid dSYM hint: \"" << hint << |
| "\" (must have the '.dSYM' extension).\n"; |
| } |
| } |
| LLVMSymbolizer Symbolizer(Opts); |
| |
| DIPrinter Printer(outs(), ClPrintFunctions != FunctionNameKind::None, |
| ClPrettyPrint, ClPrintSourceContextLines, ClVerbose, |
| ClBasenames, ClOutputStyle); |
| |
| if (ClInputAddresses.empty()) { |
| const int kMaxInputStringLength = 1024; |
| char InputString[kMaxInputStringLength]; |
| |
| while (fgets(InputString, sizeof(InputString), stdin)) |
| symbolizeInput(InputString, Symbolizer, Printer); |
| } else { |
| for (StringRef Address : ClInputAddresses) |
| symbolizeInput(Address, Symbolizer, Printer); |
| } |
| |
| return 0; |
| } |