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 "obj2yaml.h"
  11 #include "Error.h"
  12 #include "llvm/Object/Archive.h"
  13 #include "llvm/Object/COFF.h"
  14 #include "llvm/Support/CommandLine.h"
  15 #include "llvm/Support/InitLLVM.h"
  16
  17 using namespace llvm;
  18 using namespace llvm::object;
  19
  20 static std::error_code dumpObject(const ObjectFile &Obj) {
  21   if (Obj.isCOFF())
  22     return coff2yaml(outs(), cast<COFFObjectFile>(Obj));
  23   if (Obj.isELF())
  24     return elf2yaml(outs(), Obj);
  25   if (Obj.isWasm())
  26     return wasm2yaml(outs(), cast<WasmObjectFile>(Obj));
  27
  28   return obj2yaml_error::unsupported_obj_file_format;
  29 }
  30
  31 static Error dumpInput(StringRef File) {
  32   Expected<OwningBinary<Binary>> BinaryOrErr = createBinary(File);
  33   if (!BinaryOrErr)
  34     return BinaryOrErr.takeError();
  35
  36   Binary &Binary = *BinaryOrErr.get().getBinary();
  37   // Universal MachO is not a subclass of ObjectFile, so it needs to be handled
  38   // here with the other binary types.
  39   if (Binary.isMachO() || Binary.isMachOUniversalBinary())
  40     return errorCodeToError(macho2yaml(outs(), Binary));
  41   // TODO: If this is an archive, then burst it and dump each entry
  42   if (ObjectFile *Obj = dyn_cast<ObjectFile>(&Binary))
  43     return errorCodeToError(dumpObject(*Obj));
  44
  45   return Error::success();
  46 }
  47
  48 static void reportError(StringRef Input, Error Err) {
  49   if (Input == "-")
  50     Input = "<stdin>";
  51   std::string ErrMsg;
  52   raw_string_ostream OS(ErrMsg);
  53   logAllUnhandledErrors(std::move(Err), OS);
  54   OS.flush();
  55   errs() << "Error reading file: " << Input << ": " << ErrMsg;
  56   errs().flush();
  57 }
  58
  59 cl::opt<std::string> InputFilename(cl::Positional, cl::desc("<input file>"),
  60                                    cl::init("-"));
  61
  62 int main(int argc, char *argv[]) {
  63   InitLLVM X(argc, argv);
  64   cl::ParseCommandLineOptions(argc, argv);
  65
  66   if (Error Err = dumpInput(InputFilename)) {
  67     reportError(InputFilename, std::move(Err));
  68     return 1;
  69   }
  70
  71   return 0;
  72 }