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Diffstat (limited to 'contrib/llvm/tools/clang/lib/Driver/ToolChains/FreeBSD.cpp')
| -rw-r--r-- | contrib/llvm/tools/clang/lib/Driver/ToolChains/FreeBSD.cpp | 435 |
1 files changed, 435 insertions, 0 deletions
diff --git a/contrib/llvm/tools/clang/lib/Driver/ToolChains/FreeBSD.cpp b/contrib/llvm/tools/clang/lib/Driver/ToolChains/FreeBSD.cpp new file mode 100644 index 000000000000..056939b31d32 --- /dev/null +++ b/contrib/llvm/tools/clang/lib/Driver/ToolChains/FreeBSD.cpp @@ -0,0 +1,435 @@ +//===--- FreeBSD.cpp - FreeBSD ToolChain Implementations --------*- C++ -*-===// +// +// The LLVM Compiler Infrastructure +// +// This file is distributed under the University of Illinois Open Source +// License. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// + +#include "FreeBSD.h" +#include "Arch/ARM.h" +#include "Arch/Mips.h" +#include "Arch/Sparc.h" +#include "CommonArgs.h" +#include "clang/Driver/Compilation.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 { + claimNoWarnArgs(Args); + ArgStringList CmdArgs; + + // When building 32-bit code on FreeBSD/amd64, we have to explicitly + // instruct as in the base system to assemble 32-bit code. + switch (getToolChain().getArch()) { + default: + break; + case llvm::Triple::x86: + CmdArgs.push_back("--32"); + break; + case llvm::Triple::ppc: + 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, getToolChain().getTriple(), CPUName, ABIName); + + CmdArgs.push_back("-march"); + CmdArgs.push_back(CPUName.data()); + + CmdArgs.push_back("-mabi"); + CmdArgs.push_back(mips::getGnuCompatibleMipsABIName(ABIName).data()); + + if (getToolChain().getTriple().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(getToolChain(), Args, CmdArgs); + break; + } + case llvm::Triple::arm: + case llvm::Triple::armeb: + case llvm::Triple::thumb: + case llvm::Triple::thumbeb: { + arm::FloatABI ABI = arm::getARMFloatABI(getToolChain(), Args); + + if (ABI == arm::FloatABI::Hard) + CmdArgs.push_back("-mfpu=vfp"); + else + CmdArgs.push_back("-mfpu=softvfp"); + + switch (getToolChain().getTriple().getEnvironment()) { + case llvm::Triple::GNUEABIHF: + case llvm::Triple::GNUEABI: + case llvm::Triple::EABI: + CmdArgs.push_back("-meabi=5"); + break; + + default: + CmdArgs.push_back("-matpcs"); + } + break; + } + case llvm::Triple::sparc: + case llvm::Triple::sparcel: + case llvm::Triple::sparcv9: { + std::string CPU = getCPUName(Args, getToolChain().getTriple()); + CmdArgs.push_back(sparc::getSparcAsmModeForCPU(CPU, getToolChain().getTriple())); + AddAssemblerKPIC(getToolChain(), Args, CmdArgs); + break; + } + } + + 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(getToolChain().GetProgramPath("as")); + C.addCommand(llvm::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs)); +} + +void freebsd::Linker::ConstructJob(Compilation &C, const JobAction &JA, + const InputInfo &Output, + const InputInfoList &Inputs, + const ArgList &Args, + const char *LinkingOutput) const { + const toolchains::FreeBSD &ToolChain = + static_cast<const toolchains::FreeBSD &>(getToolChain()); + const Driver &D = ToolChain.getDriver(); + const llvm::Triple::ArchType Arch = ToolChain.getArch(); + const bool IsPIE = + !Args.hasArg(options::OPT_shared) && + (Args.hasArg(options::OPT_pie) || ToolChain.isPIEDefault()); + 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("-Bshareable"); + } else { + CmdArgs.push_back("-dynamic-linker"); + CmdArgs.push_back("/libexec/ld-elf.so.1"); + } + if (ToolChain.getTriple().getOSMajorVersion() >= 9) { + if (Arch == llvm::Triple::arm || Arch == llvm::Triple::sparc || + Arch == llvm::Triple::x86 || Arch == llvm::Triple::x86_64) { + 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::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; + default: + break; + } + + 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(); + } + } + + if (Output.isFilename()) { + CmdArgs.push_back("-o"); + CmdArgs.push_back(Output.getFilename()); + } else { + assert(Output.isNothing() && "Invalid output."); + } + + if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles)) { + 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); + Args.AddAllArgs(CmdArgs, options::OPT_e); + Args.AddAllArgs(CmdArgs, options::OPT_s); + Args.AddAllArgs(CmdArgs, options::OPT_t); + Args.AddAllArgs(CmdArgs, options::OPT_Z_Flag); + Args.AddAllArgs(CmdArgs, options::OPT_r); + + if (D.isUsingLTO()) { + assert(!Inputs.empty() && "Must have at least one input."); + AddGoldPlugin(ToolChain, Args, CmdArgs, Output, Inputs[0], + D.getLTOMode() == LTOK_Thin); + } + + bool NeedsSanitizerDeps = addSanitizerRuntimes(ToolChain, Args, CmdArgs); + bool NeedsXRayDeps = addXRayRuntime(ToolChain, Args, CmdArgs); + AddLinkerInputs(ToolChain, Inputs, Args, CmdArgs, JA); + + if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs)) { + addOpenMPRuntime(CmdArgs, ToolChain, Args); + if (D.CCCIsCXX()) { + if (ToolChain.ShouldLinkCXXStdlib(Args)) + ToolChain.AddCXXStdlibLibArgs(Args, CmdArgs); + if (Args.hasArg(options::OPT_pg)) + CmdArgs.push_back("-lm_p"); + else + CmdArgs.push_back("-lm"); + } + if (NeedsSanitizerDeps) + linkSanitizerRuntimeDeps(ToolChain, CmdArgs); + if (NeedsXRayDeps) + linkXRayRuntimeDeps(ToolChain, CmdArgs); + // FIXME: For some reason GCC passes -lgcc and -lgcc_s before adding + // the default system libraries. Just mimic this for now. + if (Args.hasArg(options::OPT_pg)) + CmdArgs.push_back("-lgcc_p"); + else + CmdArgs.push_back("-lgcc"); + if (Args.hasArg(options::OPT_static)) { + CmdArgs.push_back("-lgcc_eh"); + } else if (Args.hasArg(options::OPT_pg)) { + 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 (Args.hasArg(options::OPT_pg)) + CmdArgs.push_back("-lpthread_p"); + else + CmdArgs.push_back("-lpthread"); + } + + if (Args.hasArg(options::OPT_pg)) { + 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 (Args.hasArg(options::OPT_pg)) { + 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)) { + if (Args.hasArg(options::OPT_shared) || IsPIE) + CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crtendS.o"))); + else + CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crtend.o"))); + CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crtn.o"))); + } + + ToolChain.addProfileRTLibs(Args, CmdArgs); + + const char *Exec = Args.MakeArgString(getToolChain().GetLinkerPath()); + C.addCommand(llvm::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs)); +} + +/// 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.getArch() == llvm::Triple::x86 || Triple.isMIPS32() || + Triple.getArch() == llvm::Triple::ppc) && + D.getVFS().exists(getDriver().SysRoot + "/usr/lib32/crt1.o")) + getFilePaths().push_back(getDriver().SysRoot + "/usr/lib32"); + else + getFilePaths().push_back(getDriver().SysRoot + "/usr/lib"); +} + +ToolChain::CXXStdlibType FreeBSD::GetDefaultCXXStdlibType() const { + if (getTriple().getOSMajorVersion() >= 10) + return ToolChain::CST_Libcxx; + return ToolChain::CST_Libstdcxx; +} + +unsigned FreeBSD::GetDefaultDwarfVersion() const { + // Default to use DWARF 2 before FreeBSD 13. + if (getTriple().getOSMajorVersion() < 13) + return 2; + return 4; +} + +void FreeBSD::addLibStdCxxIncludePaths( + const llvm::opt::ArgList &DriverArgs, + llvm::opt::ArgStringList &CC1Args) const { + addLibStdCXXIncludePaths(getDriver().SysRoot, "/usr/include/c++/4.2", "", "", + "", "", DriverArgs, CC1Args); +} + +void FreeBSD::AddCXXStdlibLibArgs(const ArgList &Args, + ArgStringList &CmdArgs) const { + CXXStdlibType Type = GetCXXStdlibType(Args); + bool Profiling = Args.hasArg(options::OPT_pg); + + switch (Type) { + case ToolChain::CST_Libcxx: + CmdArgs.push_back(Profiling ? "-lc++_p" : "-lc++"); + break; + + case ToolChain::CST_Libstdcxx: + CmdArgs.push_back(Profiling ? "-lstdc++_p" : "-lstdc++"); + break; + } +} + +Tool *FreeBSD::buildAssembler() const { + return new tools::freebsd::Assembler(*this); +} + +Tool *FreeBSD::buildLinker() const { return new tools::freebsd::Linker(*this); } + +llvm::ExceptionHandling FreeBSD::GetExceptionModel(const ArgList &Args) const { + // FreeBSD uses SjLj exceptions on ARM oabi. + switch (getTriple().getEnvironment()) { + case llvm::Triple::GNUEABIHF: + case llvm::Triple::GNUEABI: + case llvm::Triple::EABI: + return llvm::ExceptionHandling::None; + default: + if (getTriple().getArch() == llvm::Triple::arm || + getTriple().getArch() == llvm::Triple::thumb) + return llvm::ExceptionHandling::SjLj; + return llvm::ExceptionHandling::None; + } +} + +bool FreeBSD::HasNativeLLVMSupport() const { return true; } + +bool FreeBSD::isPIEDefault() const { return getSanitizerArgs().requiresPIE(); } + +SanitizerMask FreeBSD::getSupportedSanitizers() const { + 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::Vptr; + if (IsX86_64 || IsMIPS64) { + Res |= SanitizerKind::Leak; + Res |= SanitizerKind::Thread; + } + if (IsX86 || IsX86_64) { + Res |= SanitizerKind::Function; + Res |= SanitizerKind::SafeStack; + Res |= SanitizerKind::Fuzzer; + Res |= SanitizerKind::FuzzerNoLink; + } + if (IsX86_64) + Res |= SanitizerKind::Memory; + return Res; +} |