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 "llvm/BinaryFormat/Magic.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/Errc.h"
16 #include "llvm/Support/InitLLVM.h"
17
18 using namespace llvm;
19 using namespace llvm::object;
20
dumpObject(const ObjectFile & Obj)21 static Error dumpObject(const ObjectFile &Obj) {
22 if (Obj.isCOFF())
23 return errorCodeToError(coff2yaml(outs(), cast<COFFObjectFile>(Obj)));
24
25 if (Obj.isXCOFF())
26 return errorCodeToError(xcoff2yaml(outs(), cast<XCOFFObjectFile>(Obj)));
27
28 if (Obj.isELF())
29 return elf2yaml(outs(), Obj);
30
31 if (Obj.isWasm())
32 return errorCodeToError(wasm2yaml(outs(), cast<WasmObjectFile>(Obj)));
33
34 llvm_unreachable("unexpected object file format");
35 }
36
dumpInput(StringRef File)37 static Error dumpInput(StringRef File) {
38 ErrorOr<std::unique_ptr<MemoryBuffer>> FileOrErr =
39 MemoryBuffer::getFileOrSTDIN(File, /*IsText=*/false,
40 /*RequiresNullTerminator=*/false);
41 if (std::error_code EC = FileOrErr.getError())
42 return errorCodeToError(EC);
43 std::unique_ptr<MemoryBuffer> &Buffer = FileOrErr.get();
44 MemoryBufferRef MemBuf = Buffer->getMemBufferRef();
45 if (file_magic::archive == identify_magic(MemBuf.getBuffer()))
46 return archive2yaml(outs(), MemBuf);
47
48 Expected<std::unique_ptr<Binary>> BinOrErr =
49 createBinary(MemBuf, /*Context=*/nullptr);
50 if (!BinOrErr)
51 return BinOrErr.takeError();
52
53 Binary &Binary = *BinOrErr->get();
54 // Universal MachO is not a subclass of ObjectFile, so it needs to be handled
55 // here with the other binary types.
56 if (Binary.isMachO() || Binary.isMachOUniversalBinary())
57 return macho2yaml(outs(), Binary);
58 if (ObjectFile *Obj = dyn_cast<ObjectFile>(&Binary))
59 return dumpObject(*Obj);
60 if (MinidumpFile *Minidump = dyn_cast<MinidumpFile>(&Binary))
61 return minidump2yaml(outs(), *Minidump);
62
63 return Error::success();
64 }
65
reportError(StringRef Input,Error Err)66 static void reportError(StringRef Input, Error Err) {
67 if (Input == "-")
68 Input = "<stdin>";
69 std::string ErrMsg;
70 raw_string_ostream OS(ErrMsg);
71 logAllUnhandledErrors(std::move(Err), OS);
72 OS.flush();
73 errs() << "Error reading file: " << Input << ": " << ErrMsg;
74 errs().flush();
75 }
76
77 cl::opt<std::string> InputFilename(cl::Positional, cl::desc("<input file>"),
78 cl::init("-"));
79
main(int argc,char * argv[])80 int main(int argc, char *argv[]) {
81 InitLLVM X(argc, argv);
82 cl::ParseCommandLineOptions(argc, argv);
83
84 if (Error Err = dumpInput(InputFilename)) {
85 reportError(InputFilename, std::move(Err));
86 return 1;
87 }
88
89 return 0;
90 }
91