Function outputWasmLibrary

lib/llvm/codegen.cpp:305–506

}

Expect<void> outputWasmLibrary(LLVM::Context LLContext,
                               const std::filesystem::path &OutputPath,
                               Span<const Byte> Data,
                               const LLVM::MemoryBuffer &OSVec) noexcept {
  std::filesystem::path SharedObjectName;
  {
    // tempfile
    std::filesystem::path SOPath(OutputPath);
    SOPath.replace_extension("%%%%%%%%%%" WASMEDGE_LIB_EXTENSION);
    SharedObjectName = createTemp(SOPath);
    if (SharedObjectName.empty()) {
      // TODO:return error
      spdlog::error("so file creation failed:{}"sv, SOPath.u8string());
      return Unexpect(ErrCode::Value::IllegalPath);
    }
    std::ofstream OS(SharedObjectName, std::ios_base::binary);
    OS.write(OSVec.data(), static_cast<std::streamsize>(OSVec.size()));
    OS.close();
  }

  EXPECTED_TRY(outputNativeLibrary(SharedObjectName, OSVec));

  LLVM::MemoryBuffer SOFile;
  if (auto [Res, ErrorMessage] =
          LLVM::MemoryBuffer::getFile(SharedObjectName.u8string().c_str());
      unlikely(ErrorMessage)) {
    spdlog::error("object file open error:{}"sv, ErrorMessage.string_view());
    return Unexpect(ErrCode::Value::IllegalPath);
  } else {
    SOFile = std::move(Res);
  }

  LLVM::Binary ObjFile;
  if (auto [Res, ErrorMessage] = LLVM::Binary::create(SOFile, LLContext);
      unlikely(ErrorMessage)) {
    spdlog::error("object file parse error:{}"sv, ErrorMessage.string_view());
    return Unexpect(ErrCode::Value::IllegalPath);
  } else {
    ObjFile = std::move(Res);
  }

  std::string OSCustomSecVec;
  {
    std::ostringstream OS;
    WriteName(OS, "wasmedge"sv);
    WriteU32(OS, AOT::kBinaryVersion);

#if WASMEDGE_OS_LINUX
    WriteByte(OS, UINT8_C(1));
#elif WASMEDGE_OS_MACOS
    WriteByte(OS, UINT8_C(2));
#elif WASMEDGE_OS_WINDOWS
    WriteByte(OS, UINT8_C(3));
#else
#error Unsupported operating system!
#endif

#if defined(__x86_64__)