1 //===-- llvm-c++filt.cpp --------------------------------------------------===//
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 #include "llvm/Demangle/Demangle.h"
11 #include "llvm/Support/CommandLine.h"
12 #include "llvm/Support/PrettyStackTrace.h"
13 #include "llvm/Support/Signals.h"
14 #include "llvm/Support/raw_ostream.h"
21 Auto, ///< auto-detect mangling
23 Lucid, ///< Lucid compiler (lcc)
25 HP, ///< HP compiler (xCC)
26 EDG, ///< EDG compiler
27 GNUv3, ///< GNU C++ v3 ABI
29 GNAT ///< ADA copiler (gnat)
32 Format("format", cl::desc("decoration style"),
33 cl::values(clEnumValN(Auto, "auto", "auto-detect style"),
34 clEnumValN(GNU, "gnu", "GNU (itanium) style")),
36 static cl::alias FormatShort("s", cl::desc("alias for --format"),
37 cl::aliasopt(Format));
39 static cl::opt<bool> StripUnderscore("strip-underscore",
40 cl::desc("strip the leading underscore"),
42 static cl::alias StripUnderscoreShort("_",
43 cl::desc("alias for --strip-underscore"),
44 cl::aliasopt(StripUnderscore));
48 cl::desc("attempt to demangle types as well as function names"),
50 static cl::alias TypesShort("t", cl::desc("alias for --types"),
53 static cl::list<std::string>
54 Decorated(cl::Positional, cl::desc("<mangled>"), cl::ZeroOrMore);
56 static void demangle(llvm::raw_ostream &OS, const std::string &Mangled) {
59 const char *Decorated = Mangled.c_str();
61 if (Decorated[0] == '_')
63 size_t DecoratedLength = strlen(Decorated);
65 char *Undecorated = nullptr;
67 if (Types || ((DecoratedLength >= 2 && strncmp(Decorated, "_Z", 2) == 0) ||
68 (DecoratedLength >= 4 && strncmp(Decorated, "___Z", 4) == 0)))
69 Undecorated = itaniumDemangle(Decorated, nullptr, nullptr, &Status);
72 (DecoratedLength > 6 && strncmp(Decorated, "__imp_", 6) == 0)) {
73 OS << "import thunk for ";
74 Undecorated = itaniumDemangle(Decorated + 6, nullptr, nullptr, &Status);
77 OS << (Undecorated ? Undecorated : Mangled) << '\n';
82 int main(int argc, char **argv) {
83 sys::PrintStackTraceOnErrorSignal(argv[0]);
84 PrettyStackTraceProgram X(argc, argv);
86 cl::ParseCommandLineOptions(argc, argv, "llvm symbol undecoration tool\n");
88 if (Decorated.empty())
89 for (std::string Mangled; std::getline(std::cin, Mangled);)
90 demangle(llvm::outs(), Mangled);
92 for (const auto &Symbol : Decorated)
93 demangle(llvm::outs(), Symbol);