forked from OSchip/llvm-project
95 lines
3.1 KiB
C++
95 lines
3.1 KiB
C++
//===-- llvm-c++filt.cpp --------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/Demangle/Demangle.h"
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#include "llvm/Support/CommandLine.h"
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#include "llvm/Support/InitLLVM.h"
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#include "llvm/Support/raw_ostream.h"
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#include <cstdlib>
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#include <iostream>
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using namespace llvm;
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enum Style {
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Auto, ///< auto-detect mangling
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GNU, ///< GNU
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Lucid, ///< Lucid compiler (lcc)
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ARM,
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HP, ///< HP compiler (xCC)
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EDG, ///< EDG compiler
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GNUv3, ///< GNU C++ v3 ABI
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Java, ///< Java (gcj)
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GNAT ///< ADA copiler (gnat)
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};
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static cl::opt<Style>
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Format("format", cl::desc("decoration style"),
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cl::values(clEnumValN(Auto, "auto", "auto-detect style"),
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clEnumValN(GNU, "gnu", "GNU (itanium) style")),
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cl::init(Auto));
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static cl::alias FormatShort("s", cl::desc("alias for --format"),
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cl::aliasopt(Format));
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static cl::opt<bool> StripUnderscore("strip-underscore",
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cl::desc("strip the leading underscore"),
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cl::init(false));
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static cl::alias StripUnderscoreShort("_",
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cl::desc("alias for --strip-underscore"),
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cl::aliasopt(StripUnderscore));
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static cl::opt<bool>
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Types("types",
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cl::desc("attempt to demangle types as well as function names"),
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cl::init(false));
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static cl::alias TypesShort("t", cl::desc("alias for --types"),
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cl::aliasopt(Types));
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static cl::list<std::string>
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Decorated(cl::Positional, cl::desc("<mangled>"), cl::ZeroOrMore);
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static void demangle(llvm::raw_ostream &OS, const std::string &Mangled) {
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int Status;
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const char *Decorated = Mangled.c_str();
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if (StripUnderscore)
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if (Decorated[0] == '_')
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++Decorated;
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size_t DecoratedLength = strlen(Decorated);
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char *Undecorated = nullptr;
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if (Types || ((DecoratedLength >= 2 && strncmp(Decorated, "_Z", 2) == 0) ||
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(DecoratedLength >= 4 && strncmp(Decorated, "___Z", 4) == 0)))
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Undecorated = itaniumDemangle(Decorated, nullptr, nullptr, &Status);
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if (!Undecorated &&
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(DecoratedLength > 6 && strncmp(Decorated, "__imp_", 6) == 0)) {
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OS << "import thunk for ";
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Undecorated = itaniumDemangle(Decorated + 6, nullptr, nullptr, &Status);
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}
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OS << (Undecorated ? Undecorated : Mangled) << '\n';
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OS.flush();
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free(Undecorated);
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}
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int main(int argc, char **argv) {
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InitLLVM X(argc, argv);
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cl::ParseCommandLineOptions(argc, argv, "llvm symbol undecoration tool\n");
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if (Decorated.empty())
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for (std::string Mangled; std::getline(std::cin, Mangled);)
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demangle(llvm::outs(), Mangled);
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else
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for (const auto &Symbol : Decorated)
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demangle(llvm::outs(), Symbol);
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return EXIT_SUCCESS;
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}
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