| //===-- CrossWindows.cpp - Cross Windows Tool Chain -----------------------===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "CrossWindows.h" |
| #include "CommonArgs.h" |
| #include "clang/Driver/Compilation.h" |
| #include "clang/Driver/Driver.h" |
| #include "clang/Driver/Options.h" |
| #include "clang/Driver/SanitizerArgs.h" |
| #include "llvm/Option/ArgList.h" |
| #include "llvm/Support/Path.h" |
| |
| using namespace clang::driver; |
| using namespace clang::driver::toolchains; |
| |
| using llvm::opt::ArgList; |
| using llvm::opt::ArgStringList; |
| |
| void tools::CrossWindows::Assembler::ConstructJob( |
| Compilation &C, const JobAction &JA, const InputInfo &Output, |
| const InputInfoList &Inputs, const ArgList &Args, |
| const char *LinkingOutput) const { |
| claimNoWarnArgs(Args); |
| const auto &TC = |
| static_cast<const toolchains::CrossWindowsToolChain &>(getToolChain()); |
| ArgStringList CmdArgs; |
| const char *Exec; |
| |
| switch (TC.getArch()) { |
| default: |
| llvm_unreachable("unsupported architecture"); |
| case llvm::Triple::arm: |
| case llvm::Triple::thumb: |
| case llvm::Triple::aarch64: |
| break; |
| case llvm::Triple::x86: |
| CmdArgs.push_back("--32"); |
| break; |
| case llvm::Triple::x86_64: |
| CmdArgs.push_back("--64"); |
| break; |
| } |
| |
| Args.AddAllArgValues(CmdArgs, options::OPT_Wa_COMMA, options::OPT_Xassembler); |
| |
| CmdArgs.push_back("-o"); |
| CmdArgs.push_back(Output.getFilename()); |
| |
| for (const auto &Input : Inputs) |
| CmdArgs.push_back(Input.getFilename()); |
| |
| const std::string Assembler = TC.GetProgramPath("as"); |
| Exec = Args.MakeArgString(Assembler); |
| |
| C.addCommand(std::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs)); |
| } |
| |
| void tools::CrossWindows::Linker::ConstructJob( |
| Compilation &C, const JobAction &JA, const InputInfo &Output, |
| const InputInfoList &Inputs, const ArgList &Args, |
| const char *LinkingOutput) const { |
| const auto &TC = |
| static_cast<const toolchains::CrossWindowsToolChain &>(getToolChain()); |
| const llvm::Triple &T = TC.getTriple(); |
| const Driver &D = TC.getDriver(); |
| SmallString<128> EntryPoint; |
| ArgStringList CmdArgs; |
| const char *Exec; |
| |
| // Silence warning for "clang -g foo.o -o foo" |
| Args.ClaimAllArgs(options::OPT_g_Group); |
| // and "clang -emit-llvm foo.o -o foo" |
| Args.ClaimAllArgs(options::OPT_emit_llvm); |
| // and for "clang -w foo.o -o foo" |
| Args.ClaimAllArgs(options::OPT_w); |
| // Other warning options are already handled somewhere else. |
| |
| if (!D.SysRoot.empty()) |
| CmdArgs.push_back(Args.MakeArgString("--sysroot=" + D.SysRoot)); |
| |
| if (Args.hasArg(options::OPT_pie)) |
| CmdArgs.push_back("-pie"); |
| if (Args.hasArg(options::OPT_rdynamic)) |
| CmdArgs.push_back("-export-dynamic"); |
| if (Args.hasArg(options::OPT_s)) |
| CmdArgs.push_back("--strip-all"); |
| |
| CmdArgs.push_back("-m"); |
| switch (TC.getArch()) { |
| default: |
| llvm_unreachable("unsupported architecture"); |
| case llvm::Triple::arm: |
| case llvm::Triple::thumb: |
| // FIXME: this is incorrect for WinCE |
| CmdArgs.push_back("thumb2pe"); |
| break; |
| case llvm::Triple::aarch64: |
| CmdArgs.push_back("arm64pe"); |
| break; |
| case llvm::Triple::x86: |
| CmdArgs.push_back("i386pe"); |
| EntryPoint.append("_"); |
| break; |
| case llvm::Triple::x86_64: |
| CmdArgs.push_back("i386pep"); |
| break; |
| } |
| |
| if (Args.hasArg(options::OPT_shared)) { |
| switch (T.getArch()) { |
| default: |
| llvm_unreachable("unsupported architecture"); |
| case llvm::Triple::aarch64: |
| case llvm::Triple::arm: |
| case llvm::Triple::thumb: |
| case llvm::Triple::x86_64: |
| EntryPoint.append("_DllMainCRTStartup"); |
| break; |
| case llvm::Triple::x86: |
| EntryPoint.append("_DllMainCRTStartup@12"); |
| break; |
| } |
| |
| CmdArgs.push_back("-shared"); |
| CmdArgs.push_back(Args.hasArg(options::OPT_static) ? "-Bstatic" |
| : "-Bdynamic"); |
| |
| CmdArgs.push_back("--enable-auto-image-base"); |
| |
| CmdArgs.push_back("--entry"); |
| CmdArgs.push_back(Args.MakeArgString(EntryPoint)); |
| } else { |
| EntryPoint.append("mainCRTStartup"); |
| |
| CmdArgs.push_back(Args.hasArg(options::OPT_static) ? "-Bstatic" |
| : "-Bdynamic"); |
| |
| if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles)) { |
| CmdArgs.push_back("--entry"); |
| CmdArgs.push_back(Args.MakeArgString(EntryPoint)); |
| } |
| |
| // FIXME: handle subsystem |
| } |
| |
| // NOTE: deal with multiple definitions on Windows (e.g. COMDAT) |
| CmdArgs.push_back("--allow-multiple-definition"); |
| |
| CmdArgs.push_back("-o"); |
| CmdArgs.push_back(Output.getFilename()); |
| |
| if (Args.hasArg(options::OPT_shared) || Args.hasArg(options::OPT_rdynamic)) { |
| SmallString<261> ImpLib(Output.getFilename()); |
| llvm::sys::path::replace_extension(ImpLib, ".lib"); |
| |
| CmdArgs.push_back("--out-implib"); |
| CmdArgs.push_back(Args.MakeArgString(ImpLib)); |
| } |
| |
| Args.AddAllArgs(CmdArgs, options::OPT_L); |
| TC.AddFilePathLibArgs(Args, CmdArgs); |
| AddLinkerInputs(TC, Inputs, Args, CmdArgs, JA); |
| |
| if (TC.ShouldLinkCXXStdlib(Args)) { |
| bool StaticCXX = Args.hasArg(options::OPT_static_libstdcxx) && |
| !Args.hasArg(options::OPT_static); |
| if (StaticCXX) |
| CmdArgs.push_back("-Bstatic"); |
| TC.AddCXXStdlibLibArgs(Args, CmdArgs); |
| if (StaticCXX) |
| CmdArgs.push_back("-Bdynamic"); |
| } |
| |
| if (!Args.hasArg(options::OPT_nostdlib)) { |
| if (!Args.hasArg(options::OPT_nodefaultlibs)) { |
| // TODO handle /MT[d] /MD[d] |
| CmdArgs.push_back("-lmsvcrt"); |
| AddRunTimeLibs(TC, D, CmdArgs, Args); |
| } |
| } |
| |
| if (TC.getSanitizerArgs().needsAsanRt()) { |
| // TODO handle /MT[d] /MD[d] |
| if (Args.hasArg(options::OPT_shared)) { |
| CmdArgs.push_back(TC.getCompilerRTArgString(Args, "asan_dll_thunk")); |
| } else { |
| for (const auto &Lib : {"asan_dynamic", "asan_dynamic_runtime_thunk"}) |
| CmdArgs.push_back(TC.getCompilerRTArgString(Args, Lib)); |
| // Make sure the dynamic runtime thunk is not optimized out at link time |
| // to ensure proper SEH handling. |
| CmdArgs.push_back(Args.MakeArgString("--undefined")); |
| CmdArgs.push_back(Args.MakeArgString(TC.getArch() == llvm::Triple::x86 |
| ? "___asan_seh_interceptor" |
| : "__asan_seh_interceptor")); |
| } |
| } |
| |
| Exec = Args.MakeArgString(TC.GetLinkerPath()); |
| |
| C.addCommand(std::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs)); |
| } |
| |
| CrossWindowsToolChain::CrossWindowsToolChain(const Driver &D, |
| const llvm::Triple &T, |
| const llvm::opt::ArgList &Args) |
| : Generic_GCC(D, T, Args) {} |
| |
| bool CrossWindowsToolChain::IsUnwindTablesDefault(const ArgList &Args) const { |
| // FIXME: all non-x86 targets need unwind tables, however, LLVM currently does |
| // not know how to emit them. |
| return getArch() == llvm::Triple::x86_64; |
| } |
| |
| bool CrossWindowsToolChain::isPICDefault() const { |
| return getArch() == llvm::Triple::x86_64; |
| } |
| |
| bool CrossWindowsToolChain::isPIEDefault() const { |
| return getArch() == llvm::Triple::x86_64; |
| } |
| |
| bool CrossWindowsToolChain::isPICDefaultForced() const { |
| return getArch() == llvm::Triple::x86_64; |
| } |
| |
| void CrossWindowsToolChain:: |
| AddClangSystemIncludeArgs(const llvm::opt::ArgList &DriverArgs, |
| llvm::opt::ArgStringList &CC1Args) const { |
| const Driver &D = getDriver(); |
| const std::string &SysRoot = D.SysRoot; |
| |
| auto AddSystemAfterIncludes = [&]() { |
| for (const auto &P : DriverArgs.getAllArgValues(options::OPT_isystem_after)) |
| addSystemInclude(DriverArgs, CC1Args, P); |
| }; |
| |
| if (DriverArgs.hasArg(options::OPT_nostdinc)) { |
| AddSystemAfterIncludes(); |
| return; |
| } |
| |
| addSystemInclude(DriverArgs, CC1Args, SysRoot + "/usr/local/include"); |
| if (!DriverArgs.hasArg(options::OPT_nobuiltininc)) { |
| SmallString<128> ResourceDir(D.ResourceDir); |
| llvm::sys::path::append(ResourceDir, "include"); |
| addSystemInclude(DriverArgs, CC1Args, ResourceDir); |
| } |
| AddSystemAfterIncludes(); |
| addExternCSystemInclude(DriverArgs, CC1Args, SysRoot + "/usr/include"); |
| } |
| |
| void CrossWindowsToolChain:: |
| AddClangCXXStdlibIncludeArgs(const llvm::opt::ArgList &DriverArgs, |
| llvm::opt::ArgStringList &CC1Args) const { |
| const std::string &SysRoot = getDriver().SysRoot; |
| |
| if (DriverArgs.hasArg(options::OPT_nostdinc) || |
| DriverArgs.hasArg(options::OPT_nostdincxx)) |
| return; |
| |
| if (GetCXXStdlibType(DriverArgs) == ToolChain::CST_Libcxx) |
| addSystemInclude(DriverArgs, CC1Args, SysRoot + "/usr/include/c++/v1"); |
| } |
| |
| void CrossWindowsToolChain:: |
| AddCXXStdlibLibArgs(const llvm::opt::ArgList &DriverArgs, |
| llvm::opt::ArgStringList &CC1Args) const { |
| if (GetCXXStdlibType(DriverArgs) == ToolChain::CST_Libcxx) |
| CC1Args.push_back("-lc++"); |
| } |
| |
| clang::SanitizerMask CrossWindowsToolChain::getSupportedSanitizers() const { |
| SanitizerMask Res = ToolChain::getSupportedSanitizers(); |
| Res |= SanitizerKind::Address; |
| Res |= SanitizerKind::PointerCompare; |
| Res |= SanitizerKind::PointerSubtract; |
| return Res; |
| } |
| |
| Tool *CrossWindowsToolChain::buildLinker() const { |
| return new tools::CrossWindows::Linker(*this); |
| } |
| |
| Tool *CrossWindowsToolChain::buildAssembler() const { |
| return new tools::CrossWindows::Assembler(*this); |
| } |