/src/WasmEdge/lib/llvm/codegen.cpp

Source (jump to first uncovered line)
// SPDX-License-Identifier: Apache-2.0
// SPDX-FileCopyrightText: 2019-2024 Second State INC

#include "llvm/codegen.h"

#include "aot/version.h"
#include "common/defines.h"
#include "common/hash.h"
#include "data.h"
#include "llvm.h"

#include <charconv>
#include <fstream>
#include <lld/Common/Driver.h>
#include <random>
#include <sstream>

#if LLVM_VERSION_MAJOR >= 14
#include <lld/Common/CommonLinkerContext.h>
#endif
#if LLVM_VERSION_MAJOR >= 17
#if WASMEDGE_OS_MACOS
LLD_HAS_DRIVER(macho)
#elif WASMEDGE_OS_LINUX
LLD_HAS_DRIVER(elf)
#elif WASMEDGE_OS_WINDOWS
LLD_HAS_DRIVER(coff)
#endif
#endif

#if WASMEDGE_OS_MACOS
#include <sys/utsname.h>
#include <unistd.h>
#endif
#if WASMEDGE_OS_WINDOWS
#include <llvm/Object/COFF.h>
#endif

#if WASMEDGE_OS_LINUX
#define SYMBOL(X) X
#elif WASMEDGE_OS_MACOS
#define SYMBOL(X) "_" X
#elif WASMEDGE_OS_WINDOWS
#define SYMBOL(X) X
#endif

namespace LLVM = WasmEdge::LLVM;
using namespace std::literals;

namespace {

using namespace WasmEdge;

#if WASMEDGE_OS_MACOS
// Get current OS version
std::string getOSVersion() noexcept {
  struct utsname Info;
  if (::uname(&Info)) {
    // default os version
    return "13.0.0"s;
  }
  std::string_view Release = Info.release;
  auto GetNum = [](std::string_view &String) noexcept {
    uint64_t Result = 0;
    while (!String.empty() && std::isdigit(String[0])) {
      Result = Result * 10 + (String[0] - '0');
      String = String.substr(1);
    }
    return Result;
  };
  auto SkipDot = [](std::string_view &String) noexcept {
    if (!String.empty() && String[0] == '.')
      String = String.substr(1);
  };
  uint64_t Major = GetNum(Release);
  SkipDot(Release);
  uint64_t Minor = GetNum(Release);
  SkipDot(Release);
  uint64_t Micro = GetNum(Release);

  if (Major == 0) {
    Major = 8;
  }
  if (Major <= 19) {
    Micro = 0;
    Minor = Major - 4;
    Major = 10;
  } else {
    Micro = 0;
    Minor = 0;
    Major = 11 + Major - 20;
  }

  return fmt::format("{}.{}.{}"sv, Major, Minor, Micro);
}
// Get current SDK version
std::string getSDKVersion() noexcept {
  // TODO: parse SDKSettings.json to get real version
  return "12.1"s;
}
// Get current SDK version in pair
std::pair<uint32_t, uint32_t> getSDKVersionPair() noexcept {
  // TODO: parse SDKSettings.json to get real version
  return {UINT32_C(12), UINT32_C(1)};
}
#endif

Expect<void> WriteByte(std::ostream &OS, uint8_t Data) noexcept {
  OS.put(static_cast<char>(Data));
  return {};
}

Expect<void> WriteU32(std::ostream &OS, uint32_t Data) noexcept {
  do {
    uint8_t Byte = static_cast<uint8_t>(Data & UINT32_C(0x7f));
    Data >>= 7;
    if (Data > UINT32_C(0)) {
      Byte |= UINT8_C(0x80);
    }
    WriteByte(OS, Byte);
  } while (Data > UINT32_C(0));
  return {};
}

Expect<void> WriteU64(std::ostream &OS, uint64_t Data) noexcept {
  do {
    uint8_t Byte = static_cast<uint8_t>(Data & UINT64_C(0x7f));
    Data >>= 7;
    if (Data > UINT64_C(0)) {
      Byte |= UINT8_C(0x80);
    }
    WriteByte(OS, Byte);
  } while (Data > UINT64_C(0));
  return {};
}

Expect<void> WriteName(std::ostream &OS, std::string_view Data) noexcept {
  WriteU32(OS, static_cast<uint32_t>(Data.size()));
  for (const auto C : Data) {
    WriteByte(OS, static_cast<uint8_t>(C));
  }
  return {};
}

inline constexpr bool startsWith(std::string_view Value,
                                 std::string_view Prefix) noexcept {
  return Value.size() >= Prefix.size() &&
         Value.substr(0, Prefix.size()) == Prefix;
}

std::filesystem::path uniquePath(const std::filesystem::path Model) noexcept {
  using size_type = std::filesystem::path::string_type::size_type;
  using value_type = std::filesystem::path::value_type;
  static const auto Hex = "0123456789abcdef"sv;
  std::uniform_int_distribution<size_type> Distribution(0, Hex.size() - 1);
  auto String = Model.native();
  for (size_type N = String.size(), I = 0; I < N; ++I) {
    if (String[I] == static_cast<value_type>('%')) {
      String[I] = static_cast<value_type>(Hex[Distribution(Hash::RandEngine)]);
    }
  }
  return String;
}

std::filesystem::path createTemp(const std::filesystem::path Model) noexcept {
  while (true) {
    auto Result = uniquePath(Model);
    std::error_code Error;
    if (!std::filesystem::exists(Result, Error)) {
      if (Error) {
        return {};
      }
      return Result;
    }
  }
}

// Write output object and link
Expect<void> outputNativeLibrary(const std::filesystem::path &OutputPath,
                                 const LLVM::MemoryBuffer &OSVec) noexcept {
  spdlog::info("output start"sv);
  std::filesystem::path ObjectName;
  {
    // tempfile
    std::filesystem::path OPath(OutputPath);
#if WASMEDGE_OS_WINDOWS
    OPath.replace_extension("%%%%%%%%%%.obj"sv);
#else
    OPath.replace_extension("%%%%%%%%%%.o"sv);
#endif
    ObjectName = createTemp(OPath);
    if (ObjectName.empty()) {
      // TODO:return error
      spdlog::error("so file creation failed:{}"sv, OPath.u8string());
      return Unexpect(ErrCode::Value::IllegalPath);
    }
    std::ofstream OS(ObjectName, std::ios_base::binary);
    OS.write(OSVec.data(), static_cast<std::streamsize>(OSVec.size()));
    OS.close();
  }

  // link
  bool LinkResult = false;
#if WASMEDGE_OS_MACOS
  const auto OSVersion = getOSVersion();
  const auto SDKVersion = getSDKVersion();
#if LLVM_VERSION_MAJOR >= 14
  // LLVM 14 replaces the older mach_o lld implementation with the new one.
  // So we need to change the namespace after LLVM 14.x released.
  // Reference: https://reviews.llvm.org/D114842
  LinkResult = lld::macho::link(
#else
  LinkResult = lld::mach_o::link(
#endif
      std::initializer_list<const char *>{
          "lld", "-arch",
#if defined(__x86_64__)
          "x86_64",
#elif defined(__aarch64__)
          "arm64",
#else
#error Unsupported architecture on the MacOS!
#endif
#if LLVM_VERSION_MAJOR >= 14
          // LLVM 14 replaces the older mach_o lld implementation with the new
          // one. And it require -arch and -platform_version to always be
          // specified. Reference: https://reviews.llvm.org/D97799
          "-platform_version", "macos", OSVersion.c_str(), SDKVersion.c_str(),
#else
          "-sdk_version", SDKVersion.c_str(),
#endif
          "-dylib", "-demangle", "-macosx_version_min", OSVersion.c_str(),
          "-syslibroot", "/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk",
          ObjectName.u8string().c_str(), "-o", OutputPath.u8string().c_str()},
#elif WASMEDGE_OS_LINUX
  LinkResult = lld::elf::link(
      std::initializer_list<const char *>{"ld.lld", "--eh-frame-hdr",
                                          "--shared", "--gc-sections",
                                          "--discard-all", ObjectName.c_str(),
                                          "-o", OutputPath.u8string().c_str()},
#elif WASMEDGE_OS_WINDOWS
  LinkResult = lld::coff::link(
      std::initializer_list<const char *>{
          "lld-link", "-dll", "-base:0", "-nologo",
          ObjectName.u8string().c_str(),
          ("-out:" + OutputPath.u8string()).c_str()},
#endif

#if LLVM_VERSION_MAJOR >= 14
      llvm::outs(), llvm::errs(), false, false
#elif LLVM_VERSION_MAJOR >= 10
      false, llvm::outs(), llvm::errs()
#else
      false, llvm::errs()
#endif
  );

#if LLVM_VERSION_MAJOR >= 14
  lld::CommonLinkerContext::destroy();
#endif

  if (LinkResult) {
    std::error_code Error;
    std::filesystem::remove(ObjectName, Error);
#if WASMEDGE_OS_WINDOWS
    std::filesystem::path LibPath(OutputPath);
    LibPath.replace_extension(".lib"sv);
    std::filesystem::remove(LibPath, Error);
#endif

    spdlog::info("codegen done"sv);
  } else {
    spdlog::error("link error"sv);
  }

#if WASMEDGE_OS_MACOS
  // codesign
  if (LinkResult) {
    pid_t PID = ::fork();
    if (PID == -1) {
      spdlog::error("codesign error on fork:{}"sv, std::strerror(errno));
    } else if (PID == 0) {
      execlp("/usr/bin/codesign", "codesign", "-s", "-",
             OutputPath.u8string().c_str(), nullptr);
      std::exit(256);
    } else {
      int ChildStat;
      waitpid(PID, &ChildStat, 0);
      if (const int Status = WEXITSTATUS(ChildStat); Status != 0) {
        spdlog::error("codesign exited with status {}"sv, Status);
      }
    }
  }
#endif

  return {};
}

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__)
    WriteByte(OS, UINT8_C(1));
#elif defined(__aarch64__)
    WriteByte(OS, UINT8_C(2));
#elif defined(__riscv) && __riscv_xlen == 64
    WriteByte(OS, UINT8_C(3));
#elif defined(__arm__) && __ARM_ARCH == 7
    WriteByte(OS, UINT8_C(4));
#elif defined(__s390x__)
    WriteByte(OS, UINT8_C(5));
#else
#error Unsupported hardware architecture!
#endif

    std::vector<std::pair<std::string, uint64_t>> SymbolTable;
#if !WASMEDGE_OS_WINDOWS
    for (auto Symbol = ObjFile.symbols();
         Symbol && !ObjFile.isSymbolEnd(Symbol); Symbol.next()) {
      SymbolTable.emplace_back(Symbol.getName(), Symbol.getAddress());
    }
#else
    for (auto &Symbol :
         llvm::object::unwrap<llvm::object::COFFObjectFile>(ObjFile.unwrap())
             ->export_directories()) {
      llvm::StringRef Name;
      if (auto Error = Symbol.getSymbolName(Name); unlikely(!!Error)) {
        continue;
      } else if (Name.empty()) {
        continue;
      }
      uint32_t Offset = 0;
      if (auto Error = Symbol.getExportRVA(Offset); unlikely(!!Error)) {
        continue;
      }
      SymbolTable.emplace_back(Name.str(), Offset);
    }
#endif
    uint64_t VersionAddress = 0, IntrinsicsAddress = 0;
    std::vector<uint64_t> Types;
    std::vector<uint64_t> Codes;
    uint64_t CodesMin = std::numeric_limits<uint64_t>::max();
    for (const auto &[Name, Address] : SymbolTable) {
      if (Name == SYMBOL("version"sv)) {
        VersionAddress = Address;
      } else if (Name == SYMBOL("intrinsics"sv)) {
        IntrinsicsAddress = Address;
      } else if (startsWith(Name, SYMBOL("t"sv))) {
        uint64_t Index = 0;
        std::from_chars(Name.data() + SYMBOL("t"sv).size(),
                        Name.data() + Name.size(), Index);
        if (Types.size() < Index + 1) {
          Types.resize(Index + 1);
        }
        Types[Index] = Address;
      } else if (startsWith(Name, SYMBOL("f"sv))) {
        uint64_t Index = 0;
        std::from_chars(Name.data() + SYMBOL("f"sv).size(),
                        Name.data() + Name.size(), Index);
        if (Codes.size() < Index + 1) {
          Codes.resize(Index + 1);
        }
        CodesMin = std::min(CodesMin, Index);
        Codes[Index] = Address;
      }
    }
    if (CodesMin != std::numeric_limits<uint64_t>::max()) {
      Codes.erase(Codes.begin(),
                  Codes.begin() + static_cast<int64_t>(CodesMin));
    }
    WriteU64(OS, VersionAddress);
    WriteU64(OS, IntrinsicsAddress);
    WriteU64(OS, Types.size());
    for (const uint64_t TypeAddress : Types) {
      WriteU64(OS, TypeAddress);
    }
    WriteU64(OS, Codes.size());
    for (const uint64_t CodeAddress : Codes) {
      WriteU64(OS, CodeAddress);
    }

    uint32_t SectionCount = 0;
    for (auto Section = ObjFile.sections(); !ObjFile.isSectionEnd(Section);
         Section.next()) {
      if (Section.getSize() == 0) {
        continue;
      }
      if (!Section.isEHFrame() && !Section.isPData() && !Section.isText() &&
          !Section.isData() && !Section.isBSS()) {
        continue;
      }
      ++SectionCount;
    }
    WriteU32(OS, SectionCount);

    for (auto Section = ObjFile.sections(); !ObjFile.isSectionEnd(Section);
         Section.next()) {
      if (Section.getSize() == 0) {
        continue;
      }
      std::vector<char> Content(Section.getSize());
      if (!Section.isVirtual()) {
        if (auto Res = Section.getContents(); unlikely(Res.empty())) {
          assumingUnreachable();
        } else {
          Content.assign(Res.begin(), Res.end());
        }
      }
      if (Section.isEHFrame() || Section.isPData()) {
        WriteByte(OS, UINT8_C(4));
      } else if (Section.isText()) {
        WriteByte(OS, UINT8_C(1));
      } else if (Section.isData()) {
        WriteByte(OS, UINT8_C(2));
      } else if (Section.isBSS()) {
        WriteByte(OS, UINT8_C(3));
      } else {
        continue;
      }

      WriteU64(OS, Section.getAddress());
      WriteU64(OS, Content.size());
      WriteName(OS, std::string_view(Content.data(), Content.size()));
    }
    OSCustomSecVec = OS.str();
  }

  spdlog::info("output start"sv);

  std::ofstream OS(OutputPath, std::ios_base::binary);
  if (!OS) {
    spdlog::error("output failed."sv);
    return Unexpect(ErrCode::Value::IllegalPath);
  }
  OS.write(reinterpret_cast<const char *>(Data.data()),
           static_cast<std::streamsize>(Data.size()));
  // Custom section id
  WriteByte(OS, UINT8_C(0x00));
  WriteName(OS, std::string_view(OSCustomSecVec.data(), OSCustomSecVec.size()));

  std::error_code Error;
  std::filesystem::remove(SharedObjectName, Error);

  spdlog::info("output done"sv);
  return {};
}

} // namespace

namespace WasmEdge::LLVM {

Expect<void> CodeGen::codegen(Span<const Byte> WasmData, Data D,
                              std::filesystem::path OutputPath) noexcept {
  auto LLContext = D.extract().LLContext();
  auto &LLModule = D.extract().LLModule;
  auto &TM = D.extract().TM;
  std::filesystem::path LLPath(OutputPath);
  LLPath.replace_extension("ll"sv);

#if WASMEDGE_OS_WINDOWS
  {
    // create dummy dllmain function
    auto FTy = LLVM::Type::getFunctionType(LLContext.getInt32Ty(), {});
    auto F =
        LLModule.addFunction(FTy, LLVMExternalLinkage, "_DllMainCRTStartup");
    F.setVisibility(LLVMProtectedVisibility);
    F.setDSOLocal(true);
    F.addFnAttr(
        LLVM::Attribute::createString(LLContext, "no-stack-arg-probe"sv, {}));
    F.addFnAttr(
        LLVM::Attribute::createEnum(LLContext, LLVM::Core::StrictFP, 0));
    F.addFnAttr(LLVM::Attribute::createEnum(LLContext, LLVM::Core::UWTable,
                                            LLVM::Core::UWTableDefault));
    F.addFnAttr(
        LLVM::Attribute::createEnum(LLContext, LLVM::Core::NoReturn, 0));
    LLVM::Builder Builder(LLContext);
    Builder.positionAtEnd(LLVM::BasicBlock::create(LLContext, F, "entry"));
    Builder.createRet(LLContext.getInt32(1u));

    auto A = LLModule.addAlias(F.getType(), F, "_fltused");
    A.setLinkage(LLVMExternalLinkage);
    A.setVisibility(LLVMProtectedVisibility);
    A.setDSOLocal(true);
  }
#endif
#if WASMEDGE_OS_MACOS
  {
    const auto [Major, Minor] = getSDKVersionPair();
    LLModule.addFlag(LLVMModuleFlagBehaviorError, "SDK Version"sv,
                     LLVM::Value::getConstVector32(LLContext, {Major, Minor}));
  }
#endif

  if (Conf.getCompilerConfigure().getOutputFormat() !=
      CompilerConfigure::OutputFormat::Wasm) {
    // create wasm.code and wasm.size
    auto Int32Ty = LLContext.getInt32Ty();
    auto Content = LLVM::Value::getConstString(
        LLContext,
        {reinterpret_cast<const char *>(WasmData.data()), WasmData.size()},
        true);
    LLModule.addGlobal(Content.getType(), true, LLVMExternalLinkage, Content,
                       "wasm.code");
    LLModule.addGlobal(Int32Ty, true, LLVMExternalLinkage,
                       LLVM::Value::getConstInt(Int32Ty, WasmData.size()),
                       "wasm.size");
    for (auto Fn = LLModule.getFirstFunction(); Fn; Fn = Fn.getNextFunction()) {
      if (Fn.getLinkage() == LLVMInternalLinkage) {
        Fn.setLinkage(LLVMExternalLinkage);
        Fn.setVisibility(LLVMProtectedVisibility);
        Fn.setDSOLocal(true);
        Fn.setDLLStorageClass(LLVMDLLExportStorageClass);
      }
    }
  } else {
    for (auto Fn = LLModule.getFirstFunction(); Fn; Fn = Fn.getNextFunction()) {
      if (Fn.getLinkage() == LLVMInternalLinkage) {
        Fn.setLinkage(LLVMPrivateLinkage);
        Fn.setDSOLocal(true);
        Fn.setDLLStorageClass(LLVMDefaultStorageClass);
      }
    }
  }

  // set dllexport
  for (auto GV = LLModule.getFirstGlobal(); GV; GV = GV.getNextGlobal()) {
    if (GV.getLinkage() == LLVMExternalLinkage) {
      GV.setVisibility(LLVMProtectedVisibility);
      GV.setDSOLocal(true);
      GV.setDLLStorageClass(LLVMDLLExportStorageClass);
    }
  }

  if (Conf.getCompilerConfigure().isDumpIR()) {
    if (auto ErrorMessage = LLModule.printModuleToFile("wasm.ll");
        unlikely(ErrorMessage)) {
      spdlog::error("wasm.ll open error:{}"sv, ErrorMessage.string_view());
      return WasmEdge::Unexpect(WasmEdge::ErrCode::Value::IllegalPath);
    }
  }

  spdlog::info("codegen start"sv);
  // codegen
  {
    if (Conf.getCompilerConfigure().isDumpIR()) {
      if (auto ErrorMessage = LLModule.printModuleToFile("wasm-opt.ll")) {
        // TODO:return error
        spdlog::error("printModuleToFile failed"sv);
        return Unexpect(ErrCode::Value::IllegalPath);
      }
    }

    auto [OSVec, ErrorMessage] =
        TM.emitToMemoryBuffer(LLModule, LLVMObjectFile);
    if (ErrorMessage) {
      // TODO:return error
      spdlog::error("addPassesToEmitFile failed"sv);
      return Unexpect(ErrCode::Value::IllegalPath);
    }

    if (Conf.getCompilerConfigure().getOutputFormat() ==
        CompilerConfigure::OutputFormat::Wasm) {
      EXPECTED_TRY(outputWasmLibrary(LLContext, OutputPath, WasmData, OSVec));
    } else {
      EXPECTED_TRY(outputNativeLibrary(OutputPath, OSVec));
    }
  }

  return {};
}

} // namespace WasmEdge::LLVM

Coverage Report

Created: 2025-08-29 06:29

Line	Count	Source (jump to first uncovered line)
1		// SPDX-License-Identifier: Apache-2.0
2		// SPDX-FileCopyrightText: 2019-2024 Second State INC
3
4		#include "llvm/codegen.h"
5
6		#include "aot/version.h"
7		#include "common/defines.h"
8		#include "common/hash.h"
9		#include "data.h"
10		#include "llvm.h"
11
12		#include <charconv>
13		#include <fstream>
14		#include <lld/Common/Driver.h>
15		#include <random>
16		#include <sstream>
17
18		#if LLVM_VERSION_MAJOR >= 14
19		#include <lld/Common/CommonLinkerContext.h>
20		#endif
21		#if LLVM_VERSION_MAJOR >= 17
22		#if WASMEDGE_OS_MACOS
23		LLD_HAS_DRIVER(macho)
24		#elif WASMEDGE_OS_LINUX
25		LLD_HAS_DRIVER(elf)
26		#elif WASMEDGE_OS_WINDOWS
27		LLD_HAS_DRIVER(coff)
28		#endif
29		#endif
30
31		#if WASMEDGE_OS_MACOS
32		#include <sys/utsname.h>
33		#include <unistd.h>
34		#endif
35		#if WASMEDGE_OS_WINDOWS
36		#include <llvm/Object/COFF.h>
37		#endif
38
39		#if WASMEDGE_OS_LINUX
40	75.8k	#define SYMBOL(X) X
41		#elif WASMEDGE_OS_MACOS
42		#define SYMBOL(X) "_" X
43		#elif WASMEDGE_OS_WINDOWS
44		#define SYMBOL(X) X
45		#endif
46
47		namespace LLVM = WasmEdge::LLVM;
48		using namespace std::literals;
49
50		namespace {
51
52		using namespace WasmEdge;
53
54		#if WASMEDGE_OS_MACOS
55		// Get current OS version
56		std::string getOSVersion() noexcept {
57		struct utsname Info;
58		if (::uname(&Info)) {
59		// default os version
60		return "13.0.0"s;
61		}
62		std::string_view Release = Info.release;
63		auto GetNum = [](std::string_view &String) noexcept {
64		uint64_t Result = 0;
65		while (!String.empty() && std::isdigit(String[0])) {
66		Result = Result * 10 + (String[0] - '0');
67		String = String.substr(1);
68		}
69		return Result;
70		};
71		auto SkipDot = [](std::string_view &String) noexcept {
72		if (!String.empty() && String[0] == '.')
73		String = String.substr(1);
74		};
75		uint64_t Major = GetNum(Release);
76		SkipDot(Release);
77		uint64_t Minor = GetNum(Release);
78		SkipDot(Release);
79		uint64_t Micro = GetNum(Release);
80
81		if (Major == 0) {
82		Major = 8;
83		}
84		if (Major <= 19) {
85		Micro = 0;
86		Minor = Major - 4;
87		Major = 10;
88		} else {
89		Micro = 0;
90		Minor = 0;
91		Major = 11 + Major - 20;
92		}
93
94		return fmt::format("{}.{}.{}"sv, Major, Minor, Micro);
95		}
96		// Get current SDK version
97		std::string getSDKVersion() noexcept {
98		// TODO: parse SDKSettings.json to get real version
99		return "12.1"s;
100		}
101		// Get current SDK version in pair
102		std::pair<uint32_t, uint32_t> getSDKVersionPair() noexcept {
103		// TODO: parse SDKSettings.json to get real version
104		return {UINT32_C(12), UINT32_C(1)};
105		}
106		#endif
107
108	3.16M	Expect<void> WriteByte(std::ostream &OS, uint8_t Data) noexcept {
109	3.16M	OS.put(static_cast<char>(Data));
110	3.16M	return {};
111	3.16M	}
112
113	17.3k	Expect<void> WriteU32(std::ostream &OS, uint32_t Data) noexcept {
114	21.7k	do {
115	21.7k	uint8_t Byte = static_cast<uint8_t>(Data & UINT32_C(0x7f));
116	21.7k	Data >>= 7;
117	21.7k	if (Data > UINT32_C(0)) {
118	4.40k	Byte \|= UINT8_C(0x80);
119	4.40k	}
120	21.7k	WriteByte(OS, Byte);
121	21.7k	} while (Data > UINT32_C(0));
122	17.3k	return {};
123	17.3k	}
124
125	39.9k	Expect<void> WriteU64(std::ostream &OS, uint64_t Data) noexcept {
126	70.9k	do {
127	70.9k	uint8_t Byte = static_cast<uint8_t>(Data & UINT64_C(0x7f));
128	70.9k	Data >>= 7;
129	70.9k	if (Data > UINT64_C(0)) {
130	30.9k	Byte \|= UINT8_C(0x80);
131	30.9k	}
132	70.9k	WriteByte(OS, Byte);
133	70.9k	} while (Data > UINT64_C(0));
134	39.9k	return {};
135	39.9k	}
136
137	13.3k	Expect<void> WriteName(std::ostream &OS, std::string_view Data) noexcept {
138	13.3k	WriteU32(OS, static_cast<uint32_t>(Data.size()));
139	3.05M	for (const auto C : Data) {
140	3.05M	WriteByte(OS, static_cast<uint8_t>(C));
141	3.05M	}
142	13.3k	return {};
143	13.3k	}
144
145		inline constexpr bool startsWith(std::string_view Value,
146	26.4k	std::string_view Prefix) noexcept {
147	26.4k	return Value.size() >= Prefix.size() &&
148	26.4k	Value.substr(0, Prefix.size()) == Prefix;
149	26.4k	}
150
151	3.92k	std::filesystem::path uniquePath(const std::filesystem::path Model) noexcept {
152	3.92k	using size_type = std::filesystem::path::string_type::size_type;
153	3.92k	using value_type = std::filesystem::path::value_type;
154	3.92k	static const auto Hex = "0123456789abcdef"sv;
155	3.92k	std::uniform_int_distribution<size_type> Distribution(0, Hex.size() - 1);
156	3.92k	auto String = Model.native();
157	113k	for (size_type N = String.size(), I = 0; I < N; ++I) {
158	109k	if (String[I] == static_cast<value_type>('%')) {
159	39.2k	String[I] = static_cast<value_type>(Hex[Distribution(Hash::RandEngine)]);
160	39.2k	}
161	109k	}
162	3.92k	return String;
163	3.92k	}
164
165	3.92k	std::filesystem::path createTemp(const std::filesystem::path Model) noexcept {
166	3.92k	while (true) {
167	3.92k	auto Result = uniquePath(Model);
168	3.92k	std::error_code Error;
169	3.92k	if (!std::filesystem::exists(Result, Error)) {
170	3.92k	if (Error) {
171	0	return {};
172	0	}
173	3.92k	return Result;
174	3.92k	}
175	3.92k	}
176	3.92k	}
177
178		// Write output object and link
179		Expect<void> outputNativeLibrary(const std::filesystem::path &OutputPath,
180	1.96k	const LLVM::MemoryBuffer &OSVec) noexcept {
181	1.96k	spdlog::info("output start"sv);
182	1.96k	std::filesystem::path ObjectName;
183	1.96k	{
184		// tempfile
185	1.96k	std::filesystem::path OPath(OutputPath);
186		#if WASMEDGE_OS_WINDOWS
187		OPath.replace_extension("%%%%%%%%%%.obj"sv);
188		#else
189	1.96k	OPath.replace_extension("%%%%%%%%%%.o"sv);
190	1.96k	#endif
191	1.96k	ObjectName = createTemp(OPath);
192	1.96k	if (ObjectName.empty()) {
193		// TODO:return error
194	0	spdlog::error("so file creation failed:{}"sv, OPath.u8string());
195	0	return Unexpect(ErrCode::Value::IllegalPath);
196	0	}
197	1.96k	std::ofstream OS(ObjectName, std::ios_base::binary);
198	1.96k	OS.write(OSVec.data(), static_cast<std::streamsize>(OSVec.size()));
199	1.96k	OS.close();
200	1.96k	}
201
202		// link
203	0	bool LinkResult = false;
204		#if WASMEDGE_OS_MACOS
205		const auto OSVersion = getOSVersion();
206		const auto SDKVersion = getSDKVersion();
207		#if LLVM_VERSION_MAJOR >= 14
208		// LLVM 14 replaces the older mach_o lld implementation with the new one.
209		// So we need to change the namespace after LLVM 14.x released.
210		// Reference: https://reviews.llvm.org/D114842
211		LinkResult = lld::macho::link(
212		#else
213		LinkResult = lld::mach_o::link(
214		#endif
215		std::initializer_list<const char *>{
216		"lld", "-arch",
217		#if defined(__x86_64__)
218		"x86_64",
219		#elif defined(__aarch64__)
220		"arm64",
221		#else
222		#error Unsupported architecture on the MacOS!
223		#endif
224		#if LLVM_VERSION_MAJOR >= 14
225		// LLVM 14 replaces the older mach_o lld implementation with the new
226		// one. And it require -arch and -platform_version to always be
227		// specified. Reference: https://reviews.llvm.org/D97799
228		"-platform_version", "macos", OSVersion.c_str(), SDKVersion.c_str(),
229		#else
230		"-sdk_version", SDKVersion.c_str(),
231		#endif
232		"-dylib", "-demangle", "-macosx_version_min", OSVersion.c_str(),
233		"-syslibroot", "/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk",
234		ObjectName.u8string().c_str(), "-o", OutputPath.u8string().c_str()},
235		#elif WASMEDGE_OS_LINUX
236		LinkResult = lld::elf::link(
237	1.96k	std::initializer_list<const char *>{"ld.lld", "--eh-frame-hdr",
238	1.96k	"--shared", "--gc-sections",
239	1.96k	"--discard-all", ObjectName.c_str(),
240	1.96k	"-o", OutputPath.u8string().c_str()},
241		#elif WASMEDGE_OS_WINDOWS
242		LinkResult = lld::coff::link(
243		std::initializer_list<const char *>{
244		"lld-link", "-dll", "-base:0", "-nologo",
245		ObjectName.u8string().c_str(),
246		("-out:" + OutputPath.u8string()).c_str()},
247		#endif
248
249		#if LLVM_VERSION_MAJOR >= 14
250		llvm::outs(), llvm::errs(), false, false
251		#elif LLVM_VERSION_MAJOR >= 10
252		false, llvm::outs(), llvm::errs()
253		#else
254		false, llvm::errs()
255		#endif
256	1.96k	);
257
258		#if LLVM_VERSION_MAJOR >= 14
259		lld::CommonLinkerContext::destroy();
260		#endif
261
262	1.96k	if (LinkResult) {
263	1.96k	std::error_code Error;
264	1.96k	std::filesystem::remove(ObjectName, Error);
265		#if WASMEDGE_OS_WINDOWS
266		std::filesystem::path LibPath(OutputPath);
267		LibPath.replace_extension(".lib"sv);
268		std::filesystem::remove(LibPath, Error);
269		#endif
270
271	1.96k	spdlog::info("codegen done"sv);
272	1.96k	} else {
273	0	spdlog::error("link error"sv);
274	0	}
275
276		#if WASMEDGE_OS_MACOS
277		// codesign
278		if (LinkResult) {
279		pid_t PID = ::fork();
280		if (PID == -1) {
281		spdlog::error("codesign error on fork:{}"sv, std::strerror(errno));
282		} else if (PID == 0) {
283		execlp("/usr/bin/codesign", "codesign", "-s", "-",
284		OutputPath.u8string().c_str(), nullptr);
285		std::exit(256);
286		} else {
287		int ChildStat;
288		waitpid(PID, &ChildStat, 0);
289		if (const int Status = WEXITSTATUS(ChildStat); Status != 0) {
290		spdlog::error("codesign exited with status {}"sv, Status);
291		}
292		}
293		}
294		#endif
295
296	1.96k	return {};
297	1.96k	}
298
299		Expect<void> outputWasmLibrary(LLVM::Context LLContext,
300		const std::filesystem::path &OutputPath,
301		Span<const Byte> Data,
302	1.96k	const LLVM::MemoryBuffer &OSVec) noexcept {
303	1.96k	std::filesystem::path SharedObjectName;
304	1.96k	{
305		// tempfile
306	1.96k	std::filesystem::path SOPath(OutputPath);
307	1.96k	SOPath.replace_extension("%%%%%%%%%%" WASMEDGE_LIB_EXTENSION);
308	1.96k	SharedObjectName = createTemp(SOPath);
309	1.96k	if (SharedObjectName.empty()) {
310		// TODO:return error
311	0	spdlog::error("so file creation failed:{}"sv, SOPath.u8string());
312	0	return Unexpect(ErrCode::Value::IllegalPath);
313	0	}
314	1.96k	std::ofstream OS(SharedObjectName, std::ios_base::binary);
315	1.96k	OS.write(OSVec.data(), static_cast<std::streamsize>(OSVec.size()));
316	1.96k	OS.close();
317	1.96k	}
318
319	1.96k	EXPECTED_TRY(outputNativeLibrary(SharedObjectName, OSVec));
320
321	1.96k	LLVM::MemoryBuffer SOFile;
322	1.96k	if (auto [Res, ErrorMessage] =
323	1.96k	LLVM::MemoryBuffer::getFile(SharedObjectName.u8string().c_str());
324	1.96k	unlikely(ErrorMessage)) {
325	0	spdlog::error("object file open error:{}"sv, ErrorMessage.string_view());
326	0	return Unexpect(ErrCode::Value::IllegalPath);
327	1.96k	} else {
328	1.96k	SOFile = std::move(Res);
329	1.96k	}
330
331	1.96k	LLVM::Binary ObjFile;
332	1.96k	if (auto [Res, ErrorMessage] = LLVM::Binary::create(SOFile, LLContext);
333	1.96k	unlikely(ErrorMessage)) {
334	0	spdlog::error("object file parse error:{}"sv, ErrorMessage.string_view());
335	0	return Unexpect(ErrCode::Value::IllegalPath);
336	1.96k	} else {
337	1.96k	ObjFile = std::move(Res);
338	1.96k	}
339
340	1.96k	std::string OSCustomSecVec;
341	1.96k	{
342	1.96k	std::ostringstream OS;
343	1.96k	WriteName(OS, "wasmedge"sv);
344	1.96k	WriteU32(OS, AOT::kBinaryVersion);
345
346	1.96k	#if WASMEDGE_OS_LINUX
347	1.96k	WriteByte(OS, UINT8_C(1));
348		#elif WASMEDGE_OS_MACOS
349		WriteByte(OS, UINT8_C(2));
350		#elif WASMEDGE_OS_WINDOWS
351		WriteByte(OS, UINT8_C(3));
352		#else
353		#error Unsupported operating system!
354		#endif
355
356	1.96k	#if defined(__x86_64__)
357	1.96k	WriteByte(OS, UINT8_C(1));
358		#elif defined(__aarch64__)
359		WriteByte(OS, UINT8_C(2));
360		#elif defined(__riscv) && __riscv_xlen == 64
361		WriteByte(OS, UINT8_C(3));
362		#elif defined(__arm__) && __ARM_ARCH == 7
363		WriteByte(OS, UINT8_C(4));
364		#elif defined(__s390x__)
365		WriteByte(OS, UINT8_C(5));
366		#else
367		#error Unsupported hardware architecture!
368		#endif
369
370	1.96k	std::vector<std::pair<std::string, uint64_t>> SymbolTable;
371	1.96k	#if !WASMEDGE_OS_WINDOWS
372	1.96k	for (auto Symbol = ObjFile.symbols();
373	21.0k	Symbol && !ObjFile.isSymbolEnd(Symbol); Symbol.next()) {
374	19.0k	SymbolTable.emplace_back(Symbol.getName(), Symbol.getAddress());
375	19.0k	}
376		#else
377		for (auto &Symbol :
378		llvm::object::unwrap<llvm::object::COFFObjectFile>(ObjFile.unwrap())
379		->export_directories()) {
380		llvm::StringRef Name;
381		if (auto Error = Symbol.getSymbolName(Name); unlikely(!!Error)) {
382		continue;
383		} else if (Name.empty()) {
384		continue;
385		}
386		uint32_t Offset = 0;
387		if (auto Error = Symbol.getExportRVA(Offset); unlikely(!!Error)) {
388		continue;
389		}
390		SymbolTable.emplace_back(Name.str(), Offset);
391		}
392		#endif
393	1.96k	uint64_t VersionAddress = 0, IntrinsicsAddress = 0;
394	1.96k	std::vector<uint64_t> Types;
395	1.96k	std::vector<uint64_t> Codes;
396	1.96k	uint64_t CodesMin = std::numeric_limits<uint64_t>::max();
397	19.0k	for (const auto &[Name, Address] : SymbolTable) {
398	19.0k	if (Name == SYMBOL("version"sv)) {
399	1.96k	VersionAddress = Address;
400	17.1k	} else if (Name == SYMBOL("intrinsics"sv)) {
401	1.96k	IntrinsicsAddress = Address;
402	15.1k	} else if (startsWith(Name, SYMBOL("t"sv))) {
403	3.84k	uint64_t Index = 0;
404	3.84k	std::from_chars(Name.data() + SYMBOL("t"sv).size(),
405	3.84k	Name.data() + Name.size(), Index);
406	3.84k	if (Types.size() < Index + 1) {
407	3.52k	Types.resize(Index + 1);
408	3.52k	}
409	3.84k	Types[Index] = Address;
410	11.3k	} else if (startsWith(Name, SYMBOL("f"sv))) {
411	9.34k	uint64_t Index = 0;
412	9.34k	std::from_chars(Name.data() + SYMBOL("f"sv).size(),
413	9.34k	Name.data() + Name.size(), Index);
414	9.34k	if (Codes.size() < Index + 1) {
415	7.62k	Codes.resize(Index + 1);
416	7.62k	}
417	9.34k	CodesMin = std::min(CodesMin, Index);
418	9.34k	Codes[Index] = Address;
419	9.34k	}
420	19.0k	}
421	1.96k	if (CodesMin != std::numeric_limits<uint64_t>::max()) {
422	1.77k	Codes.erase(Codes.begin(),
423	1.77k	Codes.begin() + static_cast<int64_t>(CodesMin));
424	1.77k	}
425	1.96k	WriteU64(OS, VersionAddress);
426	1.96k	WriteU64(OS, IntrinsicsAddress);
427	1.96k	WriteU64(OS, Types.size());
428	3.84k	for (const uint64_t TypeAddress : Types) {
429	3.84k	WriteU64(OS, TypeAddress);
430	3.84k	}
431	1.96k	WriteU64(OS, Codes.size());
432	9.34k	for (const uint64_t CodeAddress : Codes) {
433	9.34k	WriteU64(OS, CodeAddress);
434	9.34k	}
435
436	1.96k	uint32_t SectionCount = 0;
437	31.0k	for (auto Section = ObjFile.sections(); !ObjFile.isSectionEnd(Section);
438	29.0k	Section.next()) {
439	29.0k	if (Section.getSize() == 0) {
440	1.96k	continue;
441	1.96k	}
442	27.1k	if (!Section.isEHFrame() && !Section.isPData() && !Section.isText() &&
443	27.1k	!Section.isData() && !Section.isBSS()) {
444	17.6k	continue;
445	17.6k	}
446	9.47k	++SectionCount;
447	9.47k	}
448	1.96k	WriteU32(OS, SectionCount);
449
450	31.0k	for (auto Section = ObjFile.sections(); !ObjFile.isSectionEnd(Section);
451	29.0k	Section.next()) {
452	29.0k	if (Section.getSize() == 0) {
453	1.96k	continue;
454	1.96k	}
455	27.1k	std::vector<char> Content(Section.getSize());
456	27.1k	if (!Section.isVirtual()) {
457	25.1k	if (auto Res = Section.getContents(); unlikely(Res.empty())) {
458	0	assumingUnreachable();
459	25.1k	} else {
460	25.1k	Content.assign(Res.begin(), Res.end());
461	25.1k	}
462	25.1k	}
463	27.1k	if (Section.isEHFrame() \|\| Section.isPData()) {
464	1.85k	WriteByte(OS, UINT8_C(4));
465	25.2k	} else if (Section.isText()) {
466	1.85k	WriteByte(OS, UINT8_C(1));
467	23.4k	} else if (Section.isData()) {
468	3.81k	WriteByte(OS, UINT8_C(2));
469	19.6k	} else if (Section.isBSS()) {
470	1.96k	WriteByte(OS, UINT8_C(3));
471	17.6k	} else {
472	17.6k	continue;
473	17.6k	}
474
475	9.47k	WriteU64(OS, Section.getAddress());
476	9.47k	WriteU64(OS, Content.size());
477	9.47k	WriteName(OS, std::string_view(Content.data(), Content.size()));
478	9.47k	}
479	1.96k	OSCustomSecVec = OS.str();
480	1.96k	}
481
482	0	spdlog::info("output start"sv);
483
484	1.96k	std::ofstream OS(OutputPath, std::ios_base::binary);
485	1.96k	if (!OS) {
486	0	spdlog::error("output failed."sv);
487	0	return Unexpect(ErrCode::Value::IllegalPath);
488	0	}
489	1.96k	OS.write(reinterpret_cast<const char *>(Data.data()),
490	1.96k	static_cast<std::streamsize>(Data.size()));
491		// Custom section id
492	1.96k	WriteByte(OS, UINT8_C(0x00));
493	1.96k	WriteName(OS, std::string_view(OSCustomSecVec.data(), OSCustomSecVec.size()));
494
495	1.96k	std::error_code Error;
496	1.96k	std::filesystem::remove(SharedObjectName, Error);
497
498	1.96k	spdlog::info("output done"sv);
499	1.96k	return {};
500	1.96k	}
501
502		} // namespace
503
504		namespace WasmEdge::LLVM {
505
506		Expect<void> CodeGen::codegen(Span<const Byte> WasmData, Data D,
507	1.96k	std::filesystem::path OutputPath) noexcept {
508	1.96k	auto LLContext = D.extract().LLContext();
509	1.96k	auto &LLModule = D.extract().LLModule;
510	1.96k	auto &TM = D.extract().TM;
511	1.96k	std::filesystem::path LLPath(OutputPath);
512	1.96k	LLPath.replace_extension("ll"sv);
513
514		#if WASMEDGE_OS_WINDOWS
515		{
516		// create dummy dllmain function
517		auto FTy = LLVM::Type::getFunctionType(LLContext.getInt32Ty(), {});
518		auto F =
519		LLModule.addFunction(FTy, LLVMExternalLinkage, "_DllMainCRTStartup");
520		F.setVisibility(LLVMProtectedVisibility);
521		F.setDSOLocal(true);
522		F.addFnAttr(
523		LLVM::Attribute::createString(LLContext, "no-stack-arg-probe"sv, {}));
524		F.addFnAttr(
525		LLVM::Attribute::createEnum(LLContext, LLVM::Core::StrictFP, 0));
526		F.addFnAttr(LLVM::Attribute::createEnum(LLContext, LLVM::Core::UWTable,
527		LLVM::Core::UWTableDefault));
528		F.addFnAttr(
529		LLVM::Attribute::createEnum(LLContext, LLVM::Core::NoReturn, 0));
530		LLVM::Builder Builder(LLContext);
531		Builder.positionAtEnd(LLVM::BasicBlock::create(LLContext, F, "entry"));
532		Builder.createRet(LLContext.getInt32(1u));
533
534		auto A = LLModule.addAlias(F.getType(), F, "_fltused");
535		A.setLinkage(LLVMExternalLinkage);
536		A.setVisibility(LLVMProtectedVisibility);
537		A.setDSOLocal(true);
538		}
539		#endif
540		#if WASMEDGE_OS_MACOS
541		{
542		const auto [Major, Minor] = getSDKVersionPair();
543		LLModule.addFlag(LLVMModuleFlagBehaviorError, "SDK Version"sv,
544		LLVM::Value::getConstVector32(LLContext, {Major, Minor}));
545		}
546		#endif
547
548	1.96k	if (Conf.getCompilerConfigure().getOutputFormat() !=
549	1.96k	CompilerConfigure::OutputFormat::Wasm) {
550		// create wasm.code and wasm.size
551	0	auto Int32Ty = LLContext.getInt32Ty();
552	0	auto Content = LLVM::Value::getConstString(
553	0	LLContext,
554	0	{reinterpret_cast<const char *>(WasmData.data()), WasmData.size()},
555	0	true);
556	0	LLModule.addGlobal(Content.getType(), true, LLVMExternalLinkage, Content,
557	0	"wasm.code");
558	0	LLModule.addGlobal(Int32Ty, true, LLVMExternalLinkage,
559	0	LLVM::Value::getConstInt(Int32Ty, WasmData.size()),
560	0	"wasm.size");
561	0	for (auto Fn = LLModule.getFirstFunction(); Fn; Fn = Fn.getNextFunction()) {
562	0	if (Fn.getLinkage() == LLVMInternalLinkage) {
563	0	Fn.setLinkage(LLVMExternalLinkage);
564	0	Fn.setVisibility(LLVMProtectedVisibility);
565	0	Fn.setDSOLocal(true);
566	0	Fn.setDLLStorageClass(LLVMDLLExportStorageClass);
567	0	}
568	0	}
569	1.96k	} else {
570	16.9k	for (auto Fn = LLModule.getFirstFunction(); Fn; Fn = Fn.getNextFunction()) {
571	14.9k	if (Fn.getLinkage() == LLVMInternalLinkage) {
572	30	Fn.setLinkage(LLVMPrivateLinkage);
573	30	Fn.setDSOLocal(true);
574	30	Fn.setDLLStorageClass(LLVMDefaultStorageClass);
575	30	}
576	14.9k	}
577	1.96k	}
578
579		// set dllexport
580	5.89k	for (auto GV = LLModule.getFirstGlobal(); GV; GV = GV.getNextGlobal()) {
581	3.93k	if (GV.getLinkage() == LLVMExternalLinkage) {
582	3.92k	GV.setVisibility(LLVMProtectedVisibility);
583	3.92k	GV.setDSOLocal(true);
584	3.92k	GV.setDLLStorageClass(LLVMDLLExportStorageClass);
585	3.92k	}
586	3.93k	}
587
588	1.96k	if (Conf.getCompilerConfigure().isDumpIR()) {
589	0	if (auto ErrorMessage = LLModule.printModuleToFile("wasm.ll");
590	0	unlikely(ErrorMessage)) {
591	0	spdlog::error("wasm.ll open error:{}"sv, ErrorMessage.string_view());
592	0	return WasmEdge::Unexpect(WasmEdge::ErrCode::Value::IllegalPath);
593	0	}
594	0	}
595
596	1.96k	spdlog::info("codegen start"sv);
597		// codegen
598	1.96k	{
599	1.96k	if (Conf.getCompilerConfigure().isDumpIR()) {
600	0	if (auto ErrorMessage = LLModule.printModuleToFile("wasm-opt.ll")) {
601		// TODO:return error
602	0	spdlog::error("printModuleToFile failed"sv);
603	0	return Unexpect(ErrCode::Value::IllegalPath);
604	0	}
605	0	}
606
607	1.96k	auto [OSVec, ErrorMessage] =
608	1.96k	TM.emitToMemoryBuffer(LLModule, LLVMObjectFile);
609	1.96k	if (ErrorMessage) {
610		// TODO:return error
611	0	spdlog::error("addPassesToEmitFile failed"sv);
612	0	return Unexpect(ErrCode::Value::IllegalPath);
613	0	}
614
615	1.96k	if (Conf.getCompilerConfigure().getOutputFormat() ==
616	1.96k	CompilerConfigure::OutputFormat::Wasm) {
617	1.96k	EXPECTED_TRY(outputWasmLibrary(LLContext, OutputPath, WasmData, OSVec));
618	1.96k	} else {
619	0	EXPECTED_TRY(outputNativeLibrary(OutputPath, OSVec));
620	0	}
621	1.96k	}
622
623	1.96k	return {};
624	1.96k	}
625
626		} // namespace WasmEdge::LLVM