Function BTCpuProcessInit

Source/Windows/WOW64/Module.cpp:510–593

};

void BTCpuProcessInit() {
  FEX::Windows::InitCRTProcess();
  const auto ExecutablePath = FEX::Windows::GetExecutableFilePath();
  FEX::Config::LoadConfig(nullptr, ExecutablePath, _environ, FEX::ReadPortabilityInformation());
  FEXCore::Config::ReloadMetaLayer();
  FEX::Windows::Logging::Init();

  FEXCore::Config::Set(FEXCore::Config::CONFIG_IS_INTERPRETER, "0");
  FEXCore::Config::Set(FEXCore::Config::CONFIG_INTERPRETER_INSTALLED, "0");
  FEXCore::Config::Set(FEXCore::Config::CONFIG_IS64BIT_MODE, "0");

  // Not applicable to Windows
  FEXCore::Config::Set(FEXCore::Config::ConfigOption::CONFIG_TSOAUTOMIGRATION, "0");

  FEXCore::Profiler::Init("", "");

  FEX_CONFIG_OPT(ExtendedVolatileMetadataConfig, EXTENDEDVOLATILEMETADATA);
  ExtendedMetaData = FEX::VolatileMetadata::ParseExtendedVolatileMetadata(ExtendedVolatileMetadataConfig());

  SignalDelegator = fextl::make_unique<FEX::DummyHandlers::DummySignalDelegator>();
  SyscallHandler = fextl::make_unique<WowSyscallHandler>();
  Context::HandlerConfig.emplace();
  const auto NtDll = GetModuleHandle("ntdll.dll");
  const bool IsWine = !!GetProcAddress(NtDll, "wine_get_version");
  OvercommitTracker.emplace(IsWine);

  {
    auto HostFeatures = FEX::Windows::CPUFeatures::FetchHostFeatures(IsWine);
    CTX = FEXCore::Context::Context::CreateNewContext(HostFeatures);
  }

  CTX->SetSignalDelegator(SignalDelegator.get());
  CTX->SetSyscallHandler(SyscallHandler.get());
  CTX->InitCore();

  InvalidationTracker.emplace(*CTX, Threads);

  auto NtDllX86 = reinterpret_cast<SYSTEM_DLL_INIT_BLOCK*>(GetProcAddress(NtDll, "LdrSystemDllInitBlock"))->ntdll_handle;
  HandleImageMap(NtDllX86);

  auto MainModule = reinterpret_cast<__TEB*>(NtCurrentTeb())->Peb->ImageBaseAddress;
  HandleImageMap(reinterpret_cast<uint64_t>(MainModule));

  CPUFeatures.emplace(*CTX);

  // Allocate the syscall/unixcall trampolines in the lower 2GB of the address space
  SIZE_T Size = 4;
  void* Addr = nullptr;
  NtAllocateVirtualMemory(NtCurrentProcess(), &Addr, (1U << 31) - 1, &Size, MEM_RESERVE | MEM_COMMIT, PAGE_EXECUTE_READWRITE);
  InvalidationTracker->HandleMemoryProtectionNotification(reinterpret_cast<uint64_t>(Addr), Size, PAGE_EXECUTE);
  *reinterpret_cast<uint32_t*>(Addr) = 0x2ecd2ecd;
  BridgeInstrs::Syscall = Addr;
  BridgeInstrs::UnixCall = reinterpret_cast<void*>(reinterpret_cast<uintptr_t>(Addr) + 2);

  const auto Sym = GetProcAddress(NtDll, "__wine_unix_call_dispatcher");
  if (Sym) {
    WineUnixCall = *reinterpret_cast<decltype(WineUnixCall)*>(Sym);
  }