llvm/lib/ObjectYAML/yaml2obj.cpp

   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/WithColor.h"
  15 #include "llvm/Support/YAMLTraits.h"
  16
  17 namespace llvm {
  18 namespace yaml {
  19
  20 bool convertYAML(yaml::Input &YIn, raw_ostream &Out, ErrorHandler ErrHandler,
  21                  unsigned DocNum, uint64_t MaxSize) {
  22   unsigned CurDocNum = 0;
  23   do {
  24     if (++CurDocNum != DocNum)
  25       continue;
  26
  27     yaml::YamlObjectFile Doc;
  28     YIn >> Doc;
  29     if (std::error_code EC = YIn.error()) {
  30       ErrHandler("failed to parse YAML input: " + EC.message());
  31       return false;
  32     }
  33
  34     if (Doc.Arch)
  35       return yaml2archive(*Doc.Arch, Out, ErrHandler);
  36     if (Doc.Elf)
  37       return yaml2elf(*Doc.Elf, Out, ErrHandler, MaxSize);
  38     if (Doc.Coff)
  39       return yaml2coff(*Doc.Coff, Out, ErrHandler);
  40     if (Doc.Goff)
  41       return yaml2goff(*Doc.Goff, Out, ErrHandler);
  42     if (Doc.MachO || Doc.FatMachO)
  43       return yaml2macho(Doc, Out, ErrHandler);
  44     if (Doc.Minidump)
  45       return yaml2minidump(*Doc.Minidump, Out, ErrHandler);
  46     if (Doc.Offload)
  47       return yaml2offload(*Doc.Offload, Out, ErrHandler);
  48     if (Doc.Wasm)
  49       return yaml2wasm(*Doc.Wasm, Out, ErrHandler);
  50     if (Doc.Xcoff)
  51       return yaml2xcoff(*Doc.Xcoff, Out, ErrHandler);
  52     if (Doc.DXContainer)
  53       return yaml2dxcontainer(*Doc.DXContainer, Out, ErrHandler);
  54
  55     ErrHandler("unknown document type");
  56     return false;
  57
  58   } while (YIn.nextDocument());
  59
  60   ErrHandler("cannot find the " + Twine(DocNum) +
  61              getOrdinalSuffix(DocNum).data() + " document");
  62   return false;
  63 }
  64
  65 std::unique_ptr<object::ObjectFile>
  66 yaml2ObjectFile(SmallVectorImpl<char> &Storage, StringRef Yaml,
  67                 ErrorHandler ErrHandler) {
  68   Storage.clear();
  69   raw_svector_ostream OS(Storage);
  70
  71   yaml::Input YIn(Yaml);
  72   if (!convertYAML(YIn, OS, ErrHandler))
  73     return {};
  74
  75   Expected<std::unique_ptr<object::ObjectFile>> ObjOrErr =
  76       object::ObjectFile::createObjectFile(
  77           MemoryBufferRef(OS.str(), "YamlObject"));
  78   if (ObjOrErr)
  79     return std::move(*ObjOrErr);
  80
  81   ErrHandler(toString(ObjOrErr.takeError()));
  82   return {};
  83 }
  84
  85 } // namespace yaml
  86 } // namespace llvm