1 //===-- llvm-symbolizer.cpp - Simple addr2line-like symbolizer ------------===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This utility works much like "addr2line". It is able of transforming
11 // tuples (module name, module offset) to code locations (function name,
12 // file, line number, column number). It is targeted for compiler-rt tools
13 // (especially AddressSanitizer and ThreadSanitizer) that can use it
14 // to symbolize stack traces in their error reports.
16 //===----------------------------------------------------------------------===//
18 #include "llvm/ADT/StringRef.h"
19 #include "llvm/DebugInfo/Symbolize/DIPrinter.h"
20 #include "llvm/DebugInfo/Symbolize/Symbolize.h"
21 #include "llvm/Support/COM.h"
22 #include "llvm/Support/CommandLine.h"
23 #include "llvm/Support/Debug.h"
24 #include "llvm/Support/FileSystem.h"
25 #include "llvm/Support/InitLLVM.h"
26 #include "llvm/Support/Path.h"
27 #include "llvm/Support/raw_ostream.h"
33 using namespace symbolize;
36 ClUseSymbolTable("use-symbol-table", cl::init(true),
37 cl::desc("Prefer names in symbol table to names "
40 static cl::opt<FunctionNameKind> ClPrintFunctions(
41 "functions", cl::init(FunctionNameKind::LinkageName),
42 cl::desc("Print function name for a given address:"),
43 cl::values(clEnumValN(FunctionNameKind::None, "none", "omit function name"),
44 clEnumValN(FunctionNameKind::ShortName, "short",
45 "print short function name"),
46 clEnumValN(FunctionNameKind::LinkageName, "linkage",
47 "print function linkage name")));
50 ClUseRelativeAddress("relative-address", cl::init(false),
51 cl::desc("Interpret addresses as relative addresses"),
55 ClPrintInlining("inlining", cl::init(true),
56 cl::desc("Print all inlined frames for a given address"));
60 ClDemangle("demangle", cl::init(true), cl::desc("Demangle function names"));
62 ClDemangleShort("C", cl::desc("Alias for -demangle"),
63 cl::NotHidden, cl::aliasopt(ClDemangle));
65 static cl::opt<std::string> ClDefaultArch("default-arch", cl::init(""),
66 cl::desc("Default architecture "
67 "(for multi-arch objects)"));
70 static cl::opt<std::string>
71 ClBinaryName("obj", cl::init(""),
72 cl::desc("Path to object file to be symbolized (if not provided, "
73 "object file should be specified for each input line)"));
75 ClBinaryNameAliasExe("exe", cl::desc("Alias for -obj"),
76 cl::NotHidden, cl::aliasopt(ClBinaryName));
78 ClBinaryNameAliasE("e", cl::desc("Alias for -obj"),
79 cl::NotHidden, cl::aliasopt(ClBinaryName));
82 static cl::opt<std::string>
83 ClDwpName("dwp", cl::init(""),
84 cl::desc("Path to DWP file to be use for any split CUs"));
86 static cl::list<std::string>
87 ClDsymHint("dsym-hint", cl::ZeroOrMore,
88 cl::desc("Path to .dSYM bundles to search for debug info for the "
91 // -print-address, -addresses, -a
93 ClPrintAddress("print-address", cl::init(false),
94 cl::desc("Show address before line information"));
96 ClPrintAddressAliasAddresses("addresses", cl::desc("Alias for -print-address"),
97 cl::NotHidden, cl::aliasopt(ClPrintAddress));
99 ClPrintAddressAliasA("a", cl::desc("Alias for -print-address"),
100 cl::NotHidden, cl::aliasopt(ClPrintAddress));
104 ClPrettyPrint("pretty-print", cl::init(false),
105 cl::desc("Make the output more human friendly"));
106 static cl::alias ClPrettyPrintShort("p", cl::desc("Alias for -pretty-print"),
108 cl::aliasopt(ClPrettyPrint));
110 static cl::opt<int> ClPrintSourceContextLines(
111 "print-source-context-lines", cl::init(0),
112 cl::desc("Print N number of source file context"));
114 static cl::opt<bool> ClVerbose("verbose", cl::init(false),
115 cl::desc("Print verbose line info"));
117 static cl::list<std::string> ClInputAddresses(cl::Positional,
118 cl::desc("<input addresses>..."),
122 static bool error(Expected<T> &ResOrErr) {
125 logAllUnhandledErrors(ResOrErr.takeError(), errs(),
126 "LLVMSymbolizer: error reading file: ");
130 static bool parseCommand(StringRef InputString, bool &IsData,
131 std::string &ModuleName, uint64_t &ModuleOffset) {
132 const char kDelimiters[] = " \n\r";
134 if (InputString.consume_front("CODE ")) {
136 } else if (InputString.consume_front("DATA ")) {
139 // If no cmd, assume it's CODE.
142 const char *pos = InputString.data();
143 // Skip delimiters and parse input filename (if needed).
144 if (ClBinaryName.empty()) {
145 pos += strspn(pos, kDelimiters);
146 if (*pos == '"' || *pos == '\'') {
149 const char *end = strchr(pos, quote);
152 ModuleName = std::string(pos, end - pos);
155 int name_length = strcspn(pos, kDelimiters);
156 ModuleName = std::string(pos, name_length);
160 ModuleName = ClBinaryName;
162 // Skip delimiters and parse module offset.
163 pos += strspn(pos, kDelimiters);
164 int offset_length = strcspn(pos, kDelimiters);
165 return !StringRef(pos, offset_length).getAsInteger(0, ModuleOffset);
168 static void symbolizeInput(StringRef InputString, LLVMSymbolizer &Symbolizer,
169 DIPrinter &Printer) {
171 std::string ModuleName;
172 uint64_t ModuleOffset = 0;
173 if (!parseCommand(StringRef(InputString), IsData, ModuleName, ModuleOffset)) {
174 outs() << InputString;
178 if (ClPrintAddress) {
180 outs().write_hex(ModuleOffset);
181 StringRef Delimiter = ClPrettyPrint ? ": " : "\n";
185 auto ResOrErr = Symbolizer.symbolizeData(ModuleName, ModuleOffset);
186 Printer << (error(ResOrErr) ? DIGlobal() : ResOrErr.get());
187 } else if (ClPrintInlining) {
189 Symbolizer.symbolizeInlinedCode(ModuleName, ModuleOffset, ClDwpName);
190 Printer << (error(ResOrErr) ? DIInliningInfo() : ResOrErr.get());
193 Symbolizer.symbolizeCode(ModuleName, ModuleOffset, ClDwpName);
194 Printer << (error(ResOrErr) ? DILineInfo() : ResOrErr.get());
200 int main(int argc, char **argv) {
201 InitLLVM X(argc, argv);
203 llvm::sys::InitializeCOMRAII COM(llvm::sys::COMThreadingMode::MultiThreaded);
205 cl::ParseCommandLineOptions(argc, argv, "llvm-symbolizer\n");
206 LLVMSymbolizer::Options Opts(ClPrintFunctions, ClUseSymbolTable, ClDemangle,
207 ClUseRelativeAddress, ClDefaultArch);
209 for (const auto &hint : ClDsymHint) {
210 if (sys::path::extension(hint) == ".dSYM") {
211 Opts.DsymHints.push_back(hint);
213 errs() << "Warning: invalid dSYM hint: \"" << hint <<
214 "\" (must have the '.dSYM' extension).\n";
217 LLVMSymbolizer Symbolizer(Opts);
219 DIPrinter Printer(outs(), ClPrintFunctions != FunctionNameKind::None,
220 ClPrettyPrint, ClPrintSourceContextLines, ClVerbose);
222 if (ClInputAddresses.empty()) {
223 const int kMaxInputStringLength = 1024;
224 char InputString[kMaxInputStringLength];
226 while (fgets(InputString, sizeof(InputString), stdin))
227 symbolizeInput(InputString, Symbolizer, Printer);
229 for (StringRef Address : ClInputAddresses)
230 symbolizeInput(Address, Symbolizer, Printer);