tools/obj2yaml/obj2yaml.cpp

   1 //===------ utils/obj2yaml.cpp - obj2yaml conversion tool -------*- C++ -*-===//
   2 //
   3 //                     The LLVM Compiler Infrastructure
   4 //
   5 // This file is distributed under the University of Illinois Open Source
   6 // License. See LICENSE.TXT for details.
   7 //
   8 //===----------------------------------------------------------------------===//
   9
  10 #include "Error.h"
  11 #include "obj2yaml.h"
  12 #include "llvm/Object/Archive.h"
  13 #include "llvm/Object/COFF.h"
  14 #include "llvm/Support/CommandLine.h"
  15 #include "llvm/Support/ManagedStatic.h"
  16 #include "llvm/Support/PrettyStackTrace.h"
  17 #include "llvm/Support/Signals.h"
  18
  19 using namespace llvm;
  20 using namespace llvm::object;
  21
  22 static std::error_code dumpObject(const ObjectFile &Obj) {
  23   if (Obj.isCOFF())
  24     return coff2yaml(outs(), cast<COFFObjectFile>(Obj));
  25   if (Obj.isELF())
  26     return elf2yaml(outs(), Obj);
  27   if (Obj.isWasm())
  28     return wasm2yaml(outs(), cast<WasmObjectFile>(Obj));
  29
  30   return obj2yaml_error::unsupported_obj_file_format;
  31 }
  32
  33 static Error dumpInput(StringRef File) {
  34   Expected<OwningBinary<Binary>> BinaryOrErr = createBinary(File);
  35   if (!BinaryOrErr)
  36     return BinaryOrErr.takeError();
  37
  38   Binary &Binary = *BinaryOrErr.get().getBinary();
  39   // Universal MachO is not a subclass of ObjectFile, so it needs to be handled
  40   // here with the other binary types.
  41   if (Binary.isMachO() || Binary.isMachOUniversalBinary())
  42     return errorCodeToError(macho2yaml(outs(), Binary));
  43   // TODO: If this is an archive, then burst it and dump each entry
  44   if (ObjectFile *Obj = dyn_cast<ObjectFile>(&Binary))
  45     return errorCodeToError(dumpObject(*Obj));
  46
  47   return Error::success();
  48 }
  49
  50 static void reportError(StringRef Input, Error Err) {
  51   if (Input == "-")
  52     Input = "<stdin>";
  53   std::string ErrMsg;
  54   raw_string_ostream OS(ErrMsg);
  55   logAllUnhandledErrors(std::move(Err), OS, "");
  56   OS.flush();
  57   errs() << "Error reading file: " << Input << ": " << ErrMsg;
  58   errs().flush();
  59 }
  60
  61 cl::opt<std::string> InputFilename(cl::Positional, cl::desc("<input file>"),
  62                                    cl::init("-"));
  63
  64 int main(int argc, char *argv[]) {
  65   cl::ParseCommandLineOptions(argc, argv);
  66   sys::PrintStackTraceOnErrorSignal(argv[0]);
  67   PrettyStackTraceProgram X(argc, argv);
  68   llvm_shutdown_obj Y; // Call llvm_shutdown() on exit.
  69
  70   if (Error Err = dumpInput(InputFilename)) {
  71     reportError(InputFilename, std::move(Err));
  72     return 1;
  73   }
  74
  75   return 0;
  76 }