tools/obj2yaml/obj2yaml.cpp

   1 //===------ utils/obj2yaml.cpp - obj2yaml conversion tool -------*- C++ -*-===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8
   9 #include "obj2yaml.h"
  10 #include "Error.h"
  11 #include "llvm/Object/Archive.h"
  12 #include "llvm/Object/COFF.h"
  13 #include "llvm/Object/Minidump.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
  24   if (Obj.isXCOFF())
  25     return xcoff2yaml(outs(), cast<XCOFFObjectFile>(Obj));
  26
  27   if (Obj.isELF())
  28     return elf2yaml(outs(), Obj);
  29   if (Obj.isWasm())
  30     return wasm2yaml(outs(), cast<WasmObjectFile>(Obj));
  31
  32   return obj2yaml_error::unsupported_obj_file_format;
  33 }
  34
  35 static Error dumpInput(StringRef File) {
  36   Expected<OwningBinary<Binary>> BinaryOrErr = createBinary(File);
  37   if (!BinaryOrErr)
  38     return BinaryOrErr.takeError();
  39
  40   Binary &Binary = *BinaryOrErr.get().getBinary();
  41   // Universal MachO is not a subclass of ObjectFile, so it needs to be handled
  42   // here with the other binary types.
  43   if (Binary.isMachO() || Binary.isMachOUniversalBinary())
  44     return errorCodeToError(macho2yaml(outs(), Binary));
  45   // TODO: If this is an archive, then burst it and dump each entry
  46   if (ObjectFile *Obj = dyn_cast<ObjectFile>(&Binary))
  47     return errorCodeToError(dumpObject(*Obj));
  48   if (MinidumpFile *Minidump = dyn_cast<MinidumpFile>(&Binary))
  49     return minidump2yaml(outs(), *Minidump);
  50
  51   return Error::success();
  52 }
  53
  54 static void reportError(StringRef Input, Error Err) {
  55   if (Input == "-")
  56     Input = "<stdin>";
  57   std::string ErrMsg;
  58   raw_string_ostream OS(ErrMsg);
  59   logAllUnhandledErrors(std::move(Err), OS);
  60   OS.flush();
  61   errs() << "Error reading file: " << Input << ": " << ErrMsg;
  62   errs().flush();
  63 }
  64
  65 cl::opt<std::string> InputFilename(cl::Positional, cl::desc("<input file>"),
  66                                    cl::init("-"));
  67
  68 int main(int argc, char *argv[]) {
  69   InitLLVM X(argc, argv);
  70   cl::ParseCommandLineOptions(argc, argv);
  71
  72   if (Error Err = dumpInput(InputFilename)) {
  73     reportError(InputFilename, std::move(Err));
  74     return 1;
  75   }
  76
  77   return 0;
  78 }