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//===-- llvm-c++filt.cpp --------------------------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "llvm/Demangle/Demangle.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/PrettyStackTrace.h"
#include "llvm/Support/Signals.h"
#include "llvm/Support/raw_ostream.h"
#include <cstdlib>
#include <iostream>
using namespace llvm;
enum Style {
Auto, ///< auto-detect mangling
GNU, ///< GNU
Lucid, ///< Lucid compiler (lcc)
ARM,
HP, ///< HP compiler (xCC)
EDG, ///< EDG compiler
GNUv3, ///< GNU C++ v3 ABI
Java, ///< Java (gcj)
GNAT ///< ADA copiler (gnat)
};
static cl::opt<Style>
Format("format", cl::desc("decoration style"),
cl::values(clEnumValN(Auto, "auto", "auto-detect style"),
clEnumValN(GNU, "gnu", "GNU (itanium) style")),
cl::init(Auto));
static cl::alias FormatShort("s", cl::desc("alias for --format"),
cl::aliasopt(Format));
static cl::opt<bool> StripUnderscore("strip-underscore",
cl::desc("strip the leading underscore"),
cl::init(false));
static cl::alias StripUnderscoreShort("_",
cl::desc("alias for --strip-underscore"),
cl::aliasopt(StripUnderscore));
static cl::opt<bool>
Types("types",
cl::desc("attempt to demangle types as well as function names"),
cl::init(false));
static cl::alias TypesShort("t", cl::desc("alias for --types"),
cl::aliasopt(Types));
static cl::list<std::string>
Decorated(cl::Positional, cl::desc("<mangled>"), cl::ZeroOrMore);
static void demangle(llvm::raw_ostream &OS, const std::string &Mangled) {
int Status;
const char *Decorated = Mangled.c_str();
if (StripUnderscore)
if (Decorated[0] == '_')
++Decorated;
size_t DecoratedLength = strlen(Decorated);
char *Undecorated = nullptr;
if (Types || ((DecoratedLength >= 2 && strncmp(Decorated, "_Z", 2) == 0) ||
(DecoratedLength >= 4 && strncmp(Decorated, "___Z", 4) == 0)))
Undecorated = itaniumDemangle(Decorated, nullptr, nullptr, &Status);
if (!Undecorated &&
(DecoratedLength > 6 && strncmp(Decorated, "__imp_", 6) == 0)) {
OS << "import thunk for ";
Undecorated = itaniumDemangle(Decorated + 6, nullptr, nullptr, &Status);
}
OS << (Undecorated ? Undecorated : Mangled) << '\n';
OS.flush();
free(Undecorated);
}
int main(int argc, char **argv) {
sys::PrintStackTraceOnErrorSignal(argv[0]);
PrettyStackTraceProgram X(argc, argv);
cl::ParseCommandLineOptions(argc, argv, "llvm symbol undecoration tool\n");
if (Decorated.empty())
for (std::string Mangled; std::getline(std::cin, Mangled);)
demangle(llvm::outs(), Mangled);
else
for (const auto &Symbol : Decorated)
demangle(llvm::outs(), Symbol);
return EXIT_SUCCESS;
}
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