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 }
73