1 //===-- yaml2obj.cpp ------------------------------------------------------===// 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 "llvm/ObjectYAML/yaml2obj.h" 10 #include "llvm/ADT/StringExtras.h" 11 #include "llvm/ADT/Twine.h" 12 #include "llvm/Object/ObjectFile.h" 13 #include "llvm/ObjectYAML/ObjectYAML.h" 14 #include "llvm/Support/Errc.h" 15 #include "llvm/Support/WithColor.h" 16 #include "llvm/Support/YAMLTraits.h" 17 18 namespace llvm { 19 namespace yaml { 20 21 bool convertYAML(yaml::Input &YIn, raw_ostream &Out, ErrorHandler ErrHandler, 22 unsigned DocNum, uint64_t MaxSize) { 23 unsigned CurDocNum = 0; 24 do { 25 if (++CurDocNum != DocNum) 26 continue; 27 28 yaml::YamlObjectFile Doc; 29 YIn >> Doc; 30 if (std::error_code EC = YIn.error()) { 31 ErrHandler("failed to parse YAML input: " + EC.message()); 32 return false; 33 } 34 35 if (Doc.Elf) 36 return yaml2elf(*Doc.Elf, Out, ErrHandler, MaxSize); 37 if (Doc.Coff) 38 return yaml2coff(*Doc.Coff, Out, ErrHandler); 39 if (Doc.MachO || Doc.FatMachO) 40 return yaml2macho(Doc, Out, ErrHandler); 41 if (Doc.Minidump) 42 return yaml2minidump(*Doc.Minidump, Out, ErrHandler); 43 if (Doc.Wasm) 44 return yaml2wasm(*Doc.Wasm, Out, ErrHandler); 45 46 ErrHandler("unknown document type"); 47 return false; 48 49 } while (YIn.nextDocument()); 50 51 ErrHandler("cannot find the " + Twine(DocNum) + 52 getOrdinalSuffix(DocNum).data() + " document"); 53 return false; 54 } 55 56 std::unique_ptr<object::ObjectFile> 57 yaml2ObjectFile(SmallVectorImpl<char> &Storage, StringRef Yaml, 58 ErrorHandler ErrHandler) { 59 Storage.clear(); 60 raw_svector_ostream OS(Storage); 61 62 yaml::Input YIn(Yaml); 63 if (!convertYAML(YIn, OS, ErrHandler)) 64 return {}; 65 66 Expected<std::unique_ptr<object::ObjectFile>> ObjOrErr = 67 object::ObjectFile::createObjectFile( 68 MemoryBufferRef(OS.str(), "YamlObject")); 69 if (ObjOrErr) 70 return std::move(*ObjOrErr); 71 72 ErrHandler(toString(ObjOrErr.takeError())); 73 return {}; 74 } 75 76 } // namespace yaml 77 } // namespace llvm 78