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1 //===-- yaml2obj.cpp ------------------------------------------------------===//
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2 //
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3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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4 // See https://llvm.org/LICENSE.txt for license information.
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5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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6 //
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7 //===----------------------------------------------------------------------===//
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8
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9 #include "llvm/ObjectYAML/yaml2obj.h"
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10 #include "llvm/ADT/StringExtras.h"
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11 #include "llvm/ADT/Twine.h"
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12 #include "llvm/Object/ObjectFile.h"
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13 #include "llvm/ObjectYAML/ObjectYAML.h"
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14 #include "llvm/Support/Errc.h"
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15 #include "llvm/Support/WithColor.h"
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16 #include "llvm/Support/YAMLTraits.h"
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17
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18 namespace llvm {
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19 namespace yaml {
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20
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21 bool convertYAML(yaml::Input &YIn, raw_ostream &Out, ErrorHandler ErrHandler,
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22 unsigned DocNum) {
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23 unsigned CurDocNum = 0;
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24 do {
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25 if (++CurDocNum != DocNum)
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26 continue;
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27
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28 yaml::YamlObjectFile Doc;
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29 YIn >> Doc;
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30 if (std::error_code EC = YIn.error()) {
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31 ErrHandler("failed to parse YAML input: " + EC.message());
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32 return false;
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33 }
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34
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35 if (Doc.Elf)
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36 return yaml2elf(*Doc.Elf, Out, ErrHandler);
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37 if (Doc.Coff)
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38 return yaml2coff(*Doc.Coff, Out, ErrHandler);
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39 if (Doc.MachO || Doc.FatMachO)
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40 return yaml2macho(Doc, Out, ErrHandler);
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41 if (Doc.Minidump)
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42 return yaml2minidump(*Doc.Minidump, Out, ErrHandler);
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43 if (Doc.Wasm)
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44 return yaml2wasm(*Doc.Wasm, Out, ErrHandler);
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45
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46 ErrHandler("unknown document type");
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47 return false;
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48
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49 } while (YIn.nextDocument());
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50
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51 ErrHandler("cannot find the " + Twine(DocNum) +
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52 getOrdinalSuffix(DocNum).data() + " document");
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53 return false;
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54 }
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55
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56 std::unique_ptr<object::ObjectFile>
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57 yaml2ObjectFile(SmallVectorImpl<char> &Storage, StringRef Yaml,
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58 ErrorHandler ErrHandler) {
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59 Storage.clear();
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60 raw_svector_ostream OS(Storage);
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61
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62 yaml::Input YIn(Yaml);
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63 if (!convertYAML(YIn, OS, ErrHandler))
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64 return {};
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65
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66 Expected<std::unique_ptr<object::ObjectFile>> ObjOrErr =
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67 object::ObjectFile::createObjectFile(
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68 MemoryBufferRef(OS.str(), "YamlObject"));
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69 if (ObjOrErr)
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70 return std::move(*ObjOrErr);
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71
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72 ErrHandler(toString(ObjOrErr.takeError()));
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73 return {};
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74 }
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75
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76 } // namespace yaml
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77 } // namespace llvm
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