| //===--- FreeBSD.cpp - FreeBSD ToolChain Implementations --------*- C++ -*-===// |
| // |
| // 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 "FreeBSD.h" |
| #include "Arch/ARM.h" |
| #include "Arch/Mips.h" |
| #include "Arch/Sparc.h" |
| #include "CommonArgs.h" |
| #include "clang/Config/config.h" |
| #include "clang/Driver/Compilation.h" |
| #include "clang/Driver/DriverDiagnostic.h" |
| #include "clang/Driver/Options.h" |
| #include "clang/Driver/SanitizerArgs.h" |
| #include "llvm/Option/ArgList.h" |
| #include "llvm/Support/VirtualFileSystem.h" |
| |
| using namespace clang::driver; |
| using namespace clang::driver::tools; |
| using namespace clang::driver::toolchains; |
| using namespace clang; |
| using namespace llvm::opt; |
| |
| void freebsd::Assembler::ConstructJob(Compilation &C, const JobAction &JA, |
| const InputInfo &Output, |
| const InputInfoList &Inputs, |
| const ArgList &Args, |
| const char *LinkingOutput) const { |
| const auto &ToolChain = static_cast<const FreeBSD &>(getToolChain()); |
| const auto &D = getToolChain().getDriver(); |
| const llvm::Triple &Triple = ToolChain.getTriple(); |
| ArgStringList CmdArgs; |
| |
| claimNoWarnArgs(Args); |
| |
| // When building 32-bit code on FreeBSD/amd64, we have to explicitly |
| // instruct as in the base system to assemble 32-bit code. |
| switch (ToolChain.getArch()) { |
| default: |
| break; |
| case llvm::Triple::x86: |
| CmdArgs.push_back("--32"); |
| break; |
| case llvm::Triple::ppc: |
| case llvm::Triple::ppcle: |
| CmdArgs.push_back("-a32"); |
| break; |
| case llvm::Triple::mips: |
| case llvm::Triple::mipsel: |
| case llvm::Triple::mips64: |
| case llvm::Triple::mips64el: { |
| StringRef CPUName; |
| StringRef ABIName; |
| mips::getMipsCPUAndABI(Args, Triple, CPUName, ABIName); |
| |
| CmdArgs.push_back("-march"); |
| CmdArgs.push_back(CPUName.data()); |
| |
| CmdArgs.push_back("-mabi"); |
| CmdArgs.push_back(mips::getGnuCompatibleMipsABIName(ABIName).data()); |
| |
| if (Triple.isLittleEndian()) |
| CmdArgs.push_back("-EL"); |
| else |
| CmdArgs.push_back("-EB"); |
| |
| if (Arg *A = Args.getLastArg(options::OPT_G)) { |
| StringRef v = A->getValue(); |
| CmdArgs.push_back(Args.MakeArgString("-G" + v)); |
| A->claim(); |
| } |
| |
| AddAssemblerKPIC(ToolChain, Args, CmdArgs); |
| break; |
| } |
| case llvm::Triple::arm: |
| case llvm::Triple::armeb: |
| case llvm::Triple::thumb: |
| case llvm::Triple::thumbeb: { |
| arm::FloatABI ABI = arm::getARMFloatABI(ToolChain, Args); |
| |
| if (ABI == arm::FloatABI::Hard) |
| CmdArgs.push_back("-mfpu=vfp"); |
| else |
| CmdArgs.push_back("-mfpu=softvfp"); |
| |
| CmdArgs.push_back("-meabi=5"); |
| break; |
| } |
| case llvm::Triple::sparcv9: { |
| std::string CPU = getCPUName(D, Args, Triple); |
| CmdArgs.push_back(sparc::getSparcAsmModeForCPU(CPU, Triple)); |
| AddAssemblerKPIC(ToolChain, Args, CmdArgs); |
| break; |
| } |
| } |
| |
| for (const Arg *A : Args.filtered(options::OPT_ffile_prefix_map_EQ, |
| options::OPT_fdebug_prefix_map_EQ)) { |
| StringRef Map = A->getValue(); |
| if (!Map.contains('=')) |
| D.Diag(diag::err_drv_invalid_argument_to_option) |
| << Map << A->getOption().getName(); |
| else { |
| CmdArgs.push_back(Args.MakeArgString("--debug-prefix-map")); |
| CmdArgs.push_back(Args.MakeArgString(Map)); |
| } |
| A->claim(); |
| } |
| |
| Args.AddAllArgValues(CmdArgs, options::OPT_Wa_COMMA, options::OPT_Xassembler); |
| |
| CmdArgs.push_back("-o"); |
| CmdArgs.push_back(Output.getFilename()); |
| |
| for (const auto &II : Inputs) |
| CmdArgs.push_back(II.getFilename()); |
| |
| const char *Exec = Args.MakeArgString(ToolChain.GetProgramPath("as")); |
| C.addCommand(std::make_unique<Command>(JA, *this, |
| ResponseFileSupport::AtFileCurCP(), |
| Exec, CmdArgs, Inputs, Output)); |
| } |
| |
| void freebsd::Linker::ConstructJob(Compilation &C, const JobAction &JA, |
| const InputInfo &Output, |
| const InputInfoList &Inputs, |
| const ArgList &Args, |
| const char *LinkingOutput) const { |
| const auto &ToolChain = static_cast<const FreeBSD &>(getToolChain()); |
| const Driver &D = ToolChain.getDriver(); |
| const llvm::Triple &Triple = ToolChain.getTriple(); |
| const llvm::Triple::ArchType Arch = ToolChain.getArch(); |
| const bool IsPIE = |
| !Args.hasArg(options::OPT_shared) && |
| (Args.hasArg(options::OPT_pie) || ToolChain.isPIEDefault(Args)); |
| ArgStringList CmdArgs; |
| |
| // 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". Other warning options are already |
| // handled somewhere else. |
| Args.ClaimAllArgs(options::OPT_w); |
| |
| if (!D.SysRoot.empty()) |
| CmdArgs.push_back(Args.MakeArgString("--sysroot=" + D.SysRoot)); |
| |
| if (IsPIE) |
| CmdArgs.push_back("-pie"); |
| |
| CmdArgs.push_back("--eh-frame-hdr"); |
| if (Args.hasArg(options::OPT_static)) { |
| CmdArgs.push_back("-Bstatic"); |
| } else { |
| if (Args.hasArg(options::OPT_rdynamic)) |
| CmdArgs.push_back("-export-dynamic"); |
| if (Args.hasArg(options::OPT_shared)) { |
| CmdArgs.push_back("-shared"); |
| } else if (!Args.hasArg(options::OPT_r)) { |
| CmdArgs.push_back("-dynamic-linker"); |
| CmdArgs.push_back("/libexec/ld-elf.so.1"); |
| } |
| if (Arch == llvm::Triple::arm || Triple.isX86()) |
| CmdArgs.push_back("--hash-style=both"); |
| CmdArgs.push_back("--enable-new-dtags"); |
| } |
| |
| // Explicitly set the linker emulation for platforms that might not |
| // be the default emulation for the linker. |
| switch (Arch) { |
| case llvm::Triple::x86: |
| CmdArgs.push_back("-m"); |
| CmdArgs.push_back("elf_i386_fbsd"); |
| break; |
| case llvm::Triple::ppc: |
| CmdArgs.push_back("-m"); |
| CmdArgs.push_back("elf32ppc_fbsd"); |
| break; |
| case llvm::Triple::ppcle: |
| CmdArgs.push_back("-m"); |
| // Use generic -- only usage is for freestanding. |
| CmdArgs.push_back("elf32lppc"); |
| break; |
| case llvm::Triple::mips: |
| CmdArgs.push_back("-m"); |
| CmdArgs.push_back("elf32btsmip_fbsd"); |
| break; |
| case llvm::Triple::mipsel: |
| CmdArgs.push_back("-m"); |
| CmdArgs.push_back("elf32ltsmip_fbsd"); |
| break; |
| case llvm::Triple::mips64: |
| CmdArgs.push_back("-m"); |
| if (tools::mips::hasMipsAbiArg(Args, "n32")) |
| CmdArgs.push_back("elf32btsmipn32_fbsd"); |
| else |
| CmdArgs.push_back("elf64btsmip_fbsd"); |
| break; |
| case llvm::Triple::mips64el: |
| CmdArgs.push_back("-m"); |
| if (tools::mips::hasMipsAbiArg(Args, "n32")) |
| CmdArgs.push_back("elf32ltsmipn32_fbsd"); |
| else |
| CmdArgs.push_back("elf64ltsmip_fbsd"); |
| break; |
| case llvm::Triple::riscv64: |
| CmdArgs.push_back("-m"); |
| CmdArgs.push_back("elf64lriscv"); |
| break; |
| default: |
| break; |
| } |
| |
| if (Triple.isRISCV64()) { |
| CmdArgs.push_back("-X"); |
| if (Args.hasArg(options::OPT_mno_relax)) |
| CmdArgs.push_back("--no-relax"); |
| } |
| |
| if (Arg *A = Args.getLastArg(options::OPT_G)) { |
| if (ToolChain.getTriple().isMIPS()) { |
| StringRef v = A->getValue(); |
| CmdArgs.push_back(Args.MakeArgString("-G" + v)); |
| A->claim(); |
| } |
| } |
| |
| assert((Output.isFilename() || Output.isNothing()) && "Invalid output."); |
| if (Output.isFilename()) { |
| CmdArgs.push_back("-o"); |
| CmdArgs.push_back(Output.getFilename()); |
| } |
| |
| if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles, |
| options::OPT_r)) { |
| const char *crt1 = nullptr; |
| if (!Args.hasArg(options::OPT_shared)) { |
| if (Args.hasArg(options::OPT_pg)) |
| crt1 = "gcrt1.o"; |
| else if (IsPIE) |
| crt1 = "Scrt1.o"; |
| else |
| crt1 = "crt1.o"; |
| } |
| if (crt1) |
| CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath(crt1))); |
| |
| CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crti.o"))); |
| |
| const char *crtbegin = nullptr; |
| if (Args.hasArg(options::OPT_static)) |
| crtbegin = "crtbeginT.o"; |
| else if (Args.hasArg(options::OPT_shared) || IsPIE) |
| crtbegin = "crtbeginS.o"; |
| else |
| crtbegin = "crtbegin.o"; |
| |
| CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath(crtbegin))); |
| } |
| |
| Args.AddAllArgs(CmdArgs, options::OPT_L); |
| ToolChain.AddFilePathLibArgs(Args, CmdArgs); |
| Args.addAllArgs(CmdArgs, |
| {options::OPT_T_Group, options::OPT_s, options::OPT_t}); |
| |
| if (D.isUsingLTO()) { |
| assert(!Inputs.empty() && "Must have at least one input."); |
| // Find the first filename InputInfo object. |
| auto Input = llvm::find_if( |
| Inputs, [](const InputInfo &II) -> bool { return II.isFilename(); }); |
| if (Input == Inputs.end()) |
| // For a very rare case, all of the inputs to the linker are |
| // InputArg. If that happens, just use the first InputInfo. |
| Input = Inputs.begin(); |
| |
| addLTOOptions(ToolChain, Args, CmdArgs, Output, *Input, |
| D.getLTOMode() == LTOK_Thin); |
| } |
| |
| bool NeedsSanitizerDeps = addSanitizerRuntimes(ToolChain, Args, CmdArgs); |
| bool NeedsXRayDeps = addXRayRuntime(ToolChain, Args, CmdArgs); |
| addLinkerCompressDebugSectionsOption(ToolChain, Args, CmdArgs); |
| AddLinkerInputs(ToolChain, Inputs, Args, CmdArgs, JA); |
| |
| unsigned Major = ToolChain.getTriple().getOSMajorVersion(); |
| bool Profiling = Args.hasArg(options::OPT_pg) && Major != 0 && Major < 14; |
| if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs, |
| options::OPT_r)) { |
| // Use the static OpenMP runtime with -static-openmp |
| bool StaticOpenMP = Args.hasArg(options::OPT_static_openmp) && |
| !Args.hasArg(options::OPT_static); |
| addOpenMPRuntime(C, CmdArgs, ToolChain, Args, StaticOpenMP); |
| |
| if (D.CCCIsCXX()) { |
| if (ToolChain.ShouldLinkCXXStdlib(Args)) |
| ToolChain.AddCXXStdlibLibArgs(Args, CmdArgs); |
| if (Profiling) |
| CmdArgs.push_back("-lm_p"); |
| else |
| CmdArgs.push_back("-lm"); |
| } |
| |
| // Silence warnings when linking C code with a C++ '-stdlib' argument. |
| Args.ClaimAllArgs(options::OPT_stdlib_EQ); |
| |
| // Additional linker set-up and flags for Fortran. This is required in order |
| // to generate executables. As Fortran runtime depends on the C runtime, |
| // these dependencies need to be listed before the C runtime below (i.e. |
| // AddRunTimeLibs). |
| if (D.IsFlangMode()) { |
| addFortranRuntimeLibraryPath(ToolChain, Args, CmdArgs); |
| addFortranRuntimeLibs(ToolChain, Args, CmdArgs); |
| if (Profiling) |
| CmdArgs.push_back("-lm_p"); |
| else |
| CmdArgs.push_back("-lm"); |
| } |
| |
| if (NeedsSanitizerDeps) |
| linkSanitizerRuntimeDeps(ToolChain, Args, CmdArgs); |
| if (NeedsXRayDeps) |
| linkXRayRuntimeDeps(ToolChain, Args, CmdArgs); |
| // FIXME: For some reason GCC passes -lgcc and -lgcc_s before adding |
| // the default system libraries. Just mimic this for now. |
| if (Profiling) |
| CmdArgs.push_back("-lgcc_p"); |
| else |
| CmdArgs.push_back("-lgcc"); |
| if (Args.hasArg(options::OPT_static)) { |
| CmdArgs.push_back("-lgcc_eh"); |
| } else if (Profiling) { |
| CmdArgs.push_back("-lgcc_eh_p"); |
| } else { |
| CmdArgs.push_back("--as-needed"); |
| CmdArgs.push_back("-lgcc_s"); |
| CmdArgs.push_back("--no-as-needed"); |
| } |
| |
| if (Args.hasArg(options::OPT_pthread)) { |
| if (Profiling) |
| CmdArgs.push_back("-lpthread_p"); |
| else |
| CmdArgs.push_back("-lpthread"); |
| } |
| |
| if (Profiling) { |
| if (Args.hasArg(options::OPT_shared)) |
| CmdArgs.push_back("-lc"); |
| else |
| CmdArgs.push_back("-lc_p"); |
| CmdArgs.push_back("-lgcc_p"); |
| } else { |
| CmdArgs.push_back("-lc"); |
| CmdArgs.push_back("-lgcc"); |
| } |
| |
| if (Args.hasArg(options::OPT_static)) { |
| CmdArgs.push_back("-lgcc_eh"); |
| } else if (Profiling) { |
| CmdArgs.push_back("-lgcc_eh_p"); |
| } else { |
| CmdArgs.push_back("--as-needed"); |
| CmdArgs.push_back("-lgcc_s"); |
| CmdArgs.push_back("--no-as-needed"); |
| } |
| } |
| |
| if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles, |
| options::OPT_r)) { |
| const char *crtend = nullptr; |
| if (Args.hasArg(options::OPT_shared) || IsPIE) |
| crtend = "crtendS.o"; |
| else |
| crtend = "crtend.o"; |
| CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath(crtend))); |
| CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crtn.o"))); |
| } |
| |
| ToolChain.addProfileRTLibs(Args, CmdArgs); |
| |
| const char *Exec = Args.MakeArgString(getToolChain().GetLinkerPath()); |
| C.addCommand(std::make_unique<Command>(JA, *this, |
| ResponseFileSupport::AtFileCurCP(), |
| Exec, CmdArgs, Inputs, Output)); |
| } |
| |
| /// FreeBSD - FreeBSD tool chain which can call as(1) and ld(1) directly. |
| |
| FreeBSD::FreeBSD(const Driver &D, const llvm::Triple &Triple, |
| const ArgList &Args) |
| : Generic_ELF(D, Triple, Args) { |
| |
| // When targeting 32-bit platforms, look for '/usr/lib32/crt1.o' and fall |
| // back to '/usr/lib' if it doesn't exist. |
| if (Triple.isArch32Bit() && |
| D.getVFS().exists(concat(getDriver().SysRoot, "/usr/lib32/crt1.o"))) |
| getFilePaths().push_back(concat(getDriver().SysRoot, "/usr/lib32")); |
| else |
| getFilePaths().push_back(concat(getDriver().SysRoot, "/usr/lib")); |
| } |
| |
| void FreeBSD::AddClangSystemIncludeArgs( |
| const llvm::opt::ArgList &DriverArgs, |
| llvm::opt::ArgStringList &CC1Args) const { |
| const Driver &D = getDriver(); |
| |
| if (DriverArgs.hasArg(clang::driver::options::OPT_nostdinc)) |
| return; |
| |
| if (!DriverArgs.hasArg(options::OPT_nobuiltininc)) { |
| SmallString<128> Dir(D.ResourceDir); |
| llvm::sys::path::append(Dir, "include"); |
| addSystemInclude(DriverArgs, CC1Args, Dir.str()); |
| } |
| |
| if (DriverArgs.hasArg(options::OPT_nostdlibinc)) |
| return; |
| |
| // Check for configure-time C include directories. |
| StringRef CIncludeDirs(C_INCLUDE_DIRS); |
| if (CIncludeDirs != "") { |
| SmallVector<StringRef, 5> dirs; |
| CIncludeDirs.split(dirs, ":"); |
| for (StringRef dir : dirs) { |
| StringRef Prefix = |
| llvm::sys::path::is_absolute(dir) ? StringRef(D.SysRoot) : ""; |
| addExternCSystemInclude(DriverArgs, CC1Args, Prefix + dir); |
| } |
| return; |
| } |
| |
| addExternCSystemInclude(DriverArgs, CC1Args, |
| concat(D.SysRoot, "/usr/include")); |
| } |
| |
| void FreeBSD::addLibCxxIncludePaths(const llvm::opt::ArgList &DriverArgs, |
| llvm::opt::ArgStringList &CC1Args) const { |
| addSystemInclude(DriverArgs, CC1Args, |
| concat(getDriver().SysRoot, "/usr/include/c++/v1")); |
| } |
| |
| void FreeBSD::AddCXXStdlibLibArgs(const ArgList &Args, |
| ArgStringList &CmdArgs) const { |
| unsigned Major = getTriple().getOSMajorVersion(); |
| bool Profiling = Args.hasArg(options::OPT_pg) && Major != 0 && Major < 14; |
| |
| CmdArgs.push_back(Profiling ? "-lc++_p" : "-lc++"); |
| if (Args.hasArg(options::OPT_fexperimental_library)) |
| CmdArgs.push_back("-lc++experimental"); |
| } |
| |
| void FreeBSD::AddCudaIncludeArgs(const ArgList &DriverArgs, |
| ArgStringList &CC1Args) const { |
| CudaInstallation->AddCudaIncludeArgs(DriverArgs, CC1Args); |
| } |
| |
| void FreeBSD::AddHIPIncludeArgs(const ArgList &DriverArgs, |
| ArgStringList &CC1Args) const { |
| RocmInstallation->AddHIPIncludeArgs(DriverArgs, CC1Args); |
| } |
| |
| Tool *FreeBSD::buildAssembler() const { |
| return new tools::freebsd::Assembler(*this); |
| } |
| |
| Tool *FreeBSD::buildLinker() const { return new tools::freebsd::Linker(*this); } |
| |
| bool FreeBSD::HasNativeLLVMSupport() const { return true; } |
| |
| ToolChain::UnwindTableLevel |
| FreeBSD::getDefaultUnwindTableLevel(const ArgList &Args) const { |
| return UnwindTableLevel::Asynchronous; |
| } |
| |
| bool FreeBSD::isPIEDefault(const llvm::opt::ArgList &Args) const { |
| return getSanitizerArgs(Args).requiresPIE(); |
| } |
| |
| SanitizerMask FreeBSD::getSupportedSanitizers() const { |
| const bool IsAArch64 = getTriple().getArch() == llvm::Triple::aarch64; |
| const bool IsX86 = getTriple().getArch() == llvm::Triple::x86; |
| const bool IsX86_64 = getTriple().getArch() == llvm::Triple::x86_64; |
| const bool IsMIPS64 = getTriple().isMIPS64(); |
| SanitizerMask Res = ToolChain::getSupportedSanitizers(); |
| Res |= SanitizerKind::Address; |
| Res |= SanitizerKind::PointerCompare; |
| Res |= SanitizerKind::PointerSubtract; |
| Res |= SanitizerKind::Vptr; |
| if (IsAArch64 || IsX86_64 || IsMIPS64) { |
| Res |= SanitizerKind::Leak; |
| Res |= SanitizerKind::Thread; |
| } |
| if (IsAArch64 || IsX86 || IsX86_64) { |
| Res |= SanitizerKind::SafeStack; |
| Res |= SanitizerKind::Fuzzer; |
| Res |= SanitizerKind::FuzzerNoLink; |
| } |
| if (IsAArch64 || IsX86_64) { |
| Res |= SanitizerKind::KernelAddress; |
| Res |= SanitizerKind::KernelMemory; |
| Res |= SanitizerKind::Memory; |
| } |
| return Res; |
| } |
