forked from OSchip/llvm-project
353 lines
14 KiB
C++
353 lines
14 KiB
C++
//===-- 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 <algorithm>
|
|
#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"),
|
|
// 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> ClUntagAddresses(
|
|
"untag-addresses", cl::init(true),
|
|
cl::desc("Remove memory tags from addresses before symbolization"));
|
|
|
|
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));
|
|
|
|
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));
|
|
|
|
static cl::opt<bool>
|
|
ClRelativenames("relativenames", cl::init(false),
|
|
cl::desc("Strip the compilation directory from paths"));
|
|
|
|
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)"));
|
|
|
|
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"));
|
|
|
|
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);
|
|
|
|
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"));
|
|
|
|
static cl::opt<uint64_t>
|
|
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::list<std::string>
|
|
ClDebugFileDirectory("debug-file-directory", cl::ZeroOrMore,
|
|
cl::value_desc("dir"),
|
|
cl::desc("Path to directory where to look for debug "
|
|
"files."));
|
|
|
|
static cl::opt<DIPrinter::OutputStyle>
|
|
ClOutputStyle("output-style", cl::init(DIPrinter::OutputStyle::LLVM),
|
|
cl::desc("Specify print style"),
|
|
cl::values(clEnumValN(DIPrinter::OutputStyle::LLVM, "LLVM",
|
|
"LLVM default style"),
|
|
clEnumValN(DIPrinter::OutputStyle::GNU, "GNU",
|
|
"GNU addr2line style")));
|
|
|
|
static cl::extrahelp
|
|
HelpResponse("\nPass @FILE as argument to read options from FILE.\n");
|
|
|
|
template<typename T>
|
|
static bool error(Expected<T> &ResOrErr) {
|
|
if (ResOrErr)
|
|
return false;
|
|
logAllUnhandledErrors(ResOrErr.takeError(), errs(),
|
|
"LLVMSymbolizer: error reading file: ");
|
|
return true;
|
|
}
|
|
|
|
enum class Command {
|
|
Code,
|
|
Data,
|
|
Frame,
|
|
};
|
|
|
|
static bool parseCommand(StringRef InputString, Command &Cmd,
|
|
std::string &ModuleName, uint64_t &ModuleOffset) {
|
|
const char kDelimiters[] = " \n\r";
|
|
ModuleName = "";
|
|
if (InputString.consume_front("CODE ")) {
|
|
Cmd = Command::Code;
|
|
} else if (InputString.consume_front("DATA ")) {
|
|
Cmd = Command::Data;
|
|
} else if (InputString.consume_front("FRAME ")) {
|
|
Cmd = Command::Frame;
|
|
} else {
|
|
// If no cmd, assume it's CODE.
|
|
Cmd = Command::Code;
|
|
}
|
|
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 NameLength = strcspn(Pos, kDelimiters);
|
|
ModuleName = std::string(Pos, NameLength);
|
|
Pos += NameLength;
|
|
}
|
|
} else {
|
|
ModuleName = ClBinaryName;
|
|
}
|
|
// Skip delimiters and parse module offset.
|
|
Pos += strspn(Pos, kDelimiters);
|
|
int OffsetLength = strcspn(Pos, kDelimiters);
|
|
return !StringRef(Pos, OffsetLength).getAsInteger(0, ModuleOffset);
|
|
}
|
|
|
|
static void symbolizeInput(StringRef InputString, LLVMSymbolizer &Symbolizer,
|
|
DIPrinter &Printer) {
|
|
Command Cmd;
|
|
std::string ModuleName;
|
|
uint64_t Offset = 0;
|
|
if (!parseCommand(StringRef(InputString), Cmd, ModuleName, Offset)) {
|
|
outs() << InputString << "\n";
|
|
return;
|
|
}
|
|
|
|
if (ClPrintAddress) {
|
|
outs() << "0x";
|
|
outs().write_hex(Offset);
|
|
StringRef Delimiter = ClPrettyPrint ? ": " : "\n";
|
|
outs() << Delimiter;
|
|
}
|
|
Offset -= ClAdjustVMA;
|
|
if (Cmd == Command::Data) {
|
|
auto ResOrErr = Symbolizer.symbolizeData(
|
|
ModuleName, {Offset, object::SectionedAddress::UndefSection});
|
|
Printer << (error(ResOrErr) ? DIGlobal() : ResOrErr.get());
|
|
} else if (Cmd == Command::Frame) {
|
|
auto ResOrErr = Symbolizer.symbolizeFrame(
|
|
ModuleName, {Offset, object::SectionedAddress::UndefSection});
|
|
if (!error(ResOrErr)) {
|
|
for (DILocal Local : *ResOrErr)
|
|
Printer << Local;
|
|
if (ResOrErr->empty())
|
|
outs() << "??\n";
|
|
}
|
|
} else if (ClPrintInlining) {
|
|
auto ResOrErr = Symbolizer.symbolizeInlinedCode(
|
|
ModuleName, {Offset, object::SectionedAddress::UndefSection});
|
|
Printer << (error(ResOrErr) ? DIInliningInfo() : ResOrErr.get());
|
|
} else if (ClOutputStyle == DIPrinter::OutputStyle::GNU) {
|
|
// With ClPrintFunctions == FunctionNameKind::LinkageName (default)
|
|
// and ClUseSymbolTable == true (also default), Symbolizer.symbolizeCode()
|
|
// may override the name of an inlined function with the name of the topmost
|
|
// caller function in the inlining chain. This contradicts the existing
|
|
// behavior of addr2line. Symbolizer.symbolizeInlinedCode() overrides only
|
|
// the topmost function, which suits our needs better.
|
|
auto ResOrErr = Symbolizer.symbolizeInlinedCode(
|
|
ModuleName, {Offset, object::SectionedAddress::UndefSection});
|
|
Printer << (error(ResOrErr) ? DILineInfo() : ResOrErr.get().getFrame(0));
|
|
} else {
|
|
auto ResOrErr = Symbolizer.symbolizeCode(
|
|
ModuleName, {Offset, object::SectionedAddress::UndefSection});
|
|
Printer << (error(ResOrErr) ? DILineInfo() : ResOrErr.get());
|
|
}
|
|
if (ClOutputStyle == DIPrinter::OutputStyle::LLVM)
|
|
outs() << "\n";
|
|
}
|
|
|
|
int main(int argc, char **argv) {
|
|
InitLLVM X(argc, argv);
|
|
|
|
bool IsAddr2Line = sys::path::stem(argv[0]).contains("addr2line");
|
|
|
|
if (IsAddr2Line) {
|
|
ClDemangle.setInitialValue(false);
|
|
ClPrintFunctions.setInitialValue(FunctionNameKind::None);
|
|
ClPrintInlining.setInitialValue(false);
|
|
ClUntagAddresses.setInitialValue(false);
|
|
ClOutputStyle.setInitialValue(DIPrinter::OutputStyle::GNU);
|
|
}
|
|
|
|
llvm::sys::InitializeCOMRAII COM(llvm::sys::COMThreadingMode::MultiThreaded);
|
|
cl::ParseCommandLineOptions(
|
|
argc, argv, IsAddr2Line ? "llvm-addr2line\n" : "llvm-symbolizer\n",
|
|
/*Errs=*/nullptr,
|
|
IsAddr2Line ? "LLVM_ADDR2LINE_OPTS" : "LLVM_SYMBOLIZER_OPTS");
|
|
|
|
// If both --demangle and --no-demangle are specified then pick the last one.
|
|
if (ClNoDemangle.getPosition() > ClDemangle.getPosition())
|
|
ClDemangle = !ClNoDemangle;
|
|
|
|
LLVMSymbolizer::Options Opts;
|
|
Opts.PrintFunctions = ClPrintFunctions;
|
|
Opts.UseSymbolTable = ClUseSymbolTable;
|
|
Opts.Demangle = ClDemangle;
|
|
Opts.RelativeAddresses = ClUseRelativeAddress;
|
|
Opts.UntagAddresses = ClUntagAddresses;
|
|
Opts.DefaultArch = ClDefaultArch;
|
|
Opts.FallbackDebugPath = ClFallbackDebugPath;
|
|
Opts.DWPName = ClDwpName;
|
|
Opts.DebugFileDirectory = ClDebugFileDirectory;
|
|
Opts.PathStyle = DILineInfoSpecifier::FileLineInfoKind::AbsoluteFilePath;
|
|
// If both --basenames and --relativenames are specified then pick the last
|
|
// one.
|
|
if (ClBasenames.getPosition() > ClRelativenames.getPosition())
|
|
Opts.PathStyle = DILineInfoSpecifier::FileLineInfoKind::BaseNameOnly;
|
|
else if (ClRelativenames)
|
|
Opts.PathStyle = DILineInfoSpecifier::FileLineInfoKind::RelativeFilePath;
|
|
|
|
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,
|
|
ClOutputStyle);
|
|
|
|
if (ClInputAddresses.empty()) {
|
|
const int kMaxInputStringLength = 1024;
|
|
char InputString[kMaxInputStringLength];
|
|
|
|
while (fgets(InputString, sizeof(InputString), stdin)) {
|
|
// Strip newline characters.
|
|
std::string StrippedInputString(InputString);
|
|
StrippedInputString.erase(
|
|
std::remove_if(StrippedInputString.begin(), StrippedInputString.end(),
|
|
[](char c) { return c == '\r' || c == '\n'; }),
|
|
StrippedInputString.end());
|
|
symbolizeInput(StrippedInputString, Symbolizer, Printer);
|
|
outs().flush();
|
|
}
|
|
} else {
|
|
for (StringRef Address : ClInputAddresses)
|
|
symbolizeInput(Address, Symbolizer, Printer);
|
|
}
|
|
|
|
return 0;
|
|
}
|