| //===--- OpenBSD.cpp - OpenBSD 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 "OpenBSD.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" |
| |
| using namespace clang::driver; |
| using namespace clang::driver::tools; |
| using namespace clang::driver::toolchains; |
| using namespace clang; |
| using namespace llvm::opt; |
| |
| void openbsd::Assembler::ConstructJob(Compilation &C, const JobAction &JA, |
| const InputInfo &Output, |
| const InputInfoList &Inputs, |
| const ArgList &Args, |
| const char *LinkingOutput) const { |
| claimNoWarnArgs(Args); |
| ArgStringList CmdArgs; |
| |
| switch (getToolChain().getArch()) { |
| case llvm::Triple::x86: |
| // When building 32-bit code on OpenBSD/amd64, we have to explicitly |
| // instruct as in the base system to assemble 32-bit code. |
| CmdArgs.push_back("--32"); |
| break; |
| |
| case llvm::Triple::ppc: |
| CmdArgs.push_back("-mppc"); |
| CmdArgs.push_back("-many"); |
| break; |
| |
| case llvm::Triple::sparc: |
| case llvm::Triple::sparcel: { |
| CmdArgs.push_back("-32"); |
| std::string CPU = getCPUName(Args, getToolChain().getTriple()); |
| CmdArgs.push_back(sparc::getSparcAsmModeForCPU(CPU, getToolChain().getTriple())); |
| AddAssemblerKPIC(getToolChain(), Args, CmdArgs); |
| break; |
| } |
| |
| case llvm::Triple::sparcv9: { |
| CmdArgs.push_back("-64"); |
| std::string CPU = getCPUName(Args, getToolChain().getTriple()); |
| CmdArgs.push_back(sparc::getSparcAsmModeForCPU(CPU, getToolChain().getTriple())); |
| AddAssemblerKPIC(getToolChain(), Args, CmdArgs); |
| break; |
| } |
| |
| case llvm::Triple::mips64: |
| case llvm::Triple::mips64el: { |
| StringRef CPUName; |
| StringRef ABIName; |
| mips::getMipsCPUAndABI(Args, getToolChain().getTriple(), CPUName, ABIName); |
| |
| CmdArgs.push_back("-mabi"); |
| CmdArgs.push_back(mips::getGnuCompatibleMipsABIName(ABIName).data()); |
| |
| if (getToolChain().getTriple().isLittleEndian()) |
| CmdArgs.push_back("-EL"); |
| else |
| CmdArgs.push_back("-EB"); |
| |
| AddAssemblerKPIC(getToolChain(), Args, CmdArgs); |
| break; |
| } |
| |
| default: |
| 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 openbsd::Linker::ConstructJob(Compilation &C, const JobAction &JA, |
| const InputInfo &Output, |
| const InputInfoList &Inputs, |
| const ArgList &Args, |
| const char *LinkingOutput) const { |
| const toolchains::OpenBSD &ToolChain = |
| static_cast<const toolchains::OpenBSD &>(getToolChain()); |
| const Driver &D = getToolChain().getDriver(); |
| 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 (getToolChain().getArch() == llvm::Triple::mips64) |
| CmdArgs.push_back("-EB"); |
| else if (getToolChain().getArch() == llvm::Triple::mips64el) |
| CmdArgs.push_back("-EL"); |
| |
| if (!Args.hasArg(options::OPT_nostdlib, options::OPT_shared)) { |
| CmdArgs.push_back("-e"); |
| CmdArgs.push_back("__start"); |
| } |
| |
| 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"); |
| CmdArgs.push_back("-Bdynamic"); |
| if (Args.hasArg(options::OPT_shared)) { |
| CmdArgs.push_back("-shared"); |
| } else { |
| CmdArgs.push_back("-dynamic-linker"); |
| CmdArgs.push_back("/usr/libexec/ld.so"); |
| } |
| } |
| |
| if (Args.hasArg(options::OPT_pie)) |
| CmdArgs.push_back("-pie"); |
| if (Args.hasArg(options::OPT_nopie) || Args.hasArg(options::OPT_pg)) |
| CmdArgs.push_back("-nopie"); |
| |
| 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)) { |
| if (!Args.hasArg(options::OPT_shared)) { |
| if (Args.hasArg(options::OPT_pg)) |
| CmdArgs.push_back( |
| Args.MakeArgString(getToolChain().GetFilePath("gcrt0.o"))); |
| else if (Args.hasArg(options::OPT_static) && |
| !Args.hasArg(options::OPT_nopie)) |
| CmdArgs.push_back( |
| Args.MakeArgString(getToolChain().GetFilePath("rcrt0.o"))); |
| else |
| CmdArgs.push_back( |
| Args.MakeArgString(getToolChain().GetFilePath("crt0.o"))); |
| CmdArgs.push_back( |
| Args.MakeArgString(getToolChain().GetFilePath("crtbegin.o"))); |
| } else { |
| CmdArgs.push_back( |
| Args.MakeArgString(getToolChain().GetFilePath("crtbeginS.o"))); |
| } |
| } |
| |
| std::string Triple = getToolChain().getTripleString(); |
| if (Triple.substr(0, 6) == "x86_64") |
| Triple.replace(0, 6, "amd64"); |
| CmdArgs.push_back( |
| Args.MakeArgString("-L/usr/lib/gcc-lib/" + Triple + "/4.2.1")); |
| CmdArgs.push_back(Args.MakeArgString("-L/usr/lib")); |
| |
| Args.AddAllArgs(CmdArgs, {options::OPT_L, options::OPT_T_Group, |
| options::OPT_e, options::OPT_s, options::OPT_t, |
| options::OPT_Z_Flag, options::OPT_r}); |
| |
| bool NeedsSanitizerDeps = addSanitizerRuntimes(ToolChain, Args, CmdArgs); |
| bool NeedsXRayDeps = addXRayRuntime(ToolChain, Args, CmdArgs); |
| AddLinkerInputs(getToolChain(), Inputs, Args, CmdArgs, JA); |
| |
| if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs)) { |
| if (D.CCCIsCXX()) { |
| if (getToolChain().ShouldLinkCXXStdlib(Args)) |
| getToolChain().AddCXXStdlibLibArgs(Args, CmdArgs); |
| if (Args.hasArg(options::OPT_pg)) |
| CmdArgs.push_back("-lm_p"); |
| else |
| CmdArgs.push_back("-lm"); |
| } |
| if (NeedsSanitizerDeps) { |
| CmdArgs.push_back(ToolChain.getCompilerRTArgString(Args, "builtins", false)); |
| linkSanitizerRuntimeDeps(ToolChain, CmdArgs); |
| } |
| if (NeedsXRayDeps) { |
| CmdArgs.push_back(ToolChain.getCompilerRTArgString(Args, "builtins", false)); |
| linkXRayRuntimeDeps(ToolChain, CmdArgs); |
| } |
| // FIXME: For some reason GCC passes -lgcc before adding |
| // the default system libraries. Just mimic this for now. |
| CmdArgs.push_back("-lgcc"); |
| |
| if (Args.hasArg(options::OPT_pthread)) { |
| if (!Args.hasArg(options::OPT_shared) && Args.hasArg(options::OPT_pg)) |
| CmdArgs.push_back("-lpthread_p"); |
| else |
| CmdArgs.push_back("-lpthread"); |
| } |
| |
| if (!Args.hasArg(options::OPT_shared)) { |
| if (Args.hasArg(options::OPT_pg)) |
| CmdArgs.push_back("-lc_p"); |
| else |
| CmdArgs.push_back("-lc"); |
| } |
| |
| CmdArgs.push_back("-lgcc"); |
| } |
| |
| if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles)) { |
| if (!Args.hasArg(options::OPT_shared)) |
| CmdArgs.push_back( |
| Args.MakeArgString(getToolChain().GetFilePath("crtend.o"))); |
| else |
| CmdArgs.push_back( |
| Args.MakeArgString(getToolChain().GetFilePath("crtendS.o"))); |
| } |
| |
| const char *Exec = Args.MakeArgString( |
| !NeedsSanitizerDeps ? getToolChain().GetLinkerPath() |
| : getToolChain().GetProgramPath("ld.lld")); |
| C.addCommand(llvm::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs)); |
| } |
| |
| SanitizerMask OpenBSD::getSupportedSanitizers() const { |
| const bool IsX86 = getTriple().getArch() == llvm::Triple::x86; |
| const bool IsX86_64 = getTriple().getArch() == llvm::Triple::x86_64; |
| |
| // For future use, only UBsan at the moment |
| SanitizerMask Res = ToolChain::getSupportedSanitizers(); |
| |
| if (IsX86 || IsX86_64) { |
| Res |= SanitizerKind::Vptr; |
| Res |= SanitizerKind::Fuzzer; |
| Res |= SanitizerKind::FuzzerNoLink; |
| } |
| |
| return Res; |
| } |
| |
| /// OpenBSD - OpenBSD tool chain which can call as(1) and ld(1) directly. |
| |
| OpenBSD::OpenBSD(const Driver &D, const llvm::Triple &Triple, |
| const ArgList &Args) |
| : Generic_ELF(D, Triple, Args) { |
| getFilePaths().push_back(getDriver().Dir + "/../lib"); |
| getFilePaths().push_back("/usr/lib"); |
| } |
| |
| void OpenBSD::AddCXXStdlibLibArgs(const ArgList &Args, |
| ArgStringList &CmdArgs) const { |
| bool Profiling = Args.hasArg(options::OPT_pg); |
| |
| CmdArgs.push_back(Profiling ? "-lc++_p" : "-lc++"); |
| CmdArgs.push_back(Profiling ? "-lc++abi_p" : "-lc++abi"); |
| } |
| |
| Tool *OpenBSD::buildAssembler() const { |
| return new tools::openbsd::Assembler(*this); |
| } |
| |
| Tool *OpenBSD::buildLinker() const { return new tools::openbsd::Linker(*this); } |
