1e5dd7070Spatrick //===--- OpenBSD.cpp - OpenBSD ToolChain Implementations --------*- C++ -*-===// 2e5dd7070Spatrick // 3e5dd7070Spatrick // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4e5dd7070Spatrick // See https://llvm.org/LICENSE.txt for license information. 5e5dd7070Spatrick // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6e5dd7070Spatrick // 7e5dd7070Spatrick //===----------------------------------------------------------------------===// 8e5dd7070Spatrick 9e5dd7070Spatrick #include "OpenBSD.h" 10*7a9b00ceSrobert #include "Arch/ARM.h" 11e5dd7070Spatrick #include "Arch/Mips.h" 12e5dd7070Spatrick #include "Arch/Sparc.h" 13e5dd7070Spatrick #include "CommonArgs.h" 14ec727ea7Spatrick #include "clang/Config/config.h" 15e5dd7070Spatrick #include "clang/Driver/Compilation.h" 16e5dd7070Spatrick #include "clang/Driver/Options.h" 17e5dd7070Spatrick #include "clang/Driver/SanitizerArgs.h" 18e5dd7070Spatrick #include "llvm/Option/ArgList.h" 19e5dd7070Spatrick #include "llvm/Support/Path.h" 20a0747c9fSpatrick #include "llvm/Support/VirtualFileSystem.h" 21e5dd7070Spatrick 22e5dd7070Spatrick using namespace clang::driver; 23e5dd7070Spatrick using namespace clang::driver::tools; 24e5dd7070Spatrick using namespace clang::driver::toolchains; 25e5dd7070Spatrick using namespace clang; 26e5dd7070Spatrick using namespace llvm::opt; 27e5dd7070Spatrick 28e5dd7070Spatrick void openbsd::Assembler::ConstructJob(Compilation &C, const JobAction &JA, 29e5dd7070Spatrick const InputInfo &Output, 30e5dd7070Spatrick const InputInfoList &Inputs, 31e5dd7070Spatrick const ArgList &Args, 32e5dd7070Spatrick const char *LinkingOutput) const { 33*7a9b00ceSrobert const toolchains::OpenBSD &ToolChain = 34*7a9b00ceSrobert static_cast<const toolchains::OpenBSD &>(getToolChain()); 35*7a9b00ceSrobert const Driver &D = ToolChain.getDriver(); 36*7a9b00ceSrobert const llvm::Triple &Triple = ToolChain.getTriple(); 37*7a9b00ceSrobert 38e5dd7070Spatrick claimNoWarnArgs(Args); 39e5dd7070Spatrick ArgStringList CmdArgs; 40e5dd7070Spatrick 41*7a9b00ceSrobert switch (ToolChain.getArch()) { 42e5dd7070Spatrick case llvm::Triple::x86: 43e5dd7070Spatrick // When building 32-bit code on OpenBSD/amd64, we have to explicitly 44e5dd7070Spatrick // instruct as in the base system to assemble 32-bit code. 45e5dd7070Spatrick CmdArgs.push_back("--32"); 46e5dd7070Spatrick break; 47e5dd7070Spatrick 48*7a9b00ceSrobert case llvm::Triple::arm: 49*7a9b00ceSrobert case llvm::Triple::armeb: { 50*7a9b00ceSrobert StringRef MArch, MCPU; 51*7a9b00ceSrobert arm::getARMArchCPUFromArgs(Args, MArch, MCPU, /*FromAs*/ true); 52*7a9b00ceSrobert std::string Arch = arm::getARMTargetCPU(MCPU, MArch, Triple); 53*7a9b00ceSrobert CmdArgs.push_back(Args.MakeArgString("-mcpu=" + Arch)); 54*7a9b00ceSrobert break; 55*7a9b00ceSrobert } 56*7a9b00ceSrobert 57e5dd7070Spatrick case llvm::Triple::ppc: 58e5dd7070Spatrick CmdArgs.push_back("-mppc"); 59e5dd7070Spatrick CmdArgs.push_back("-many"); 60e5dd7070Spatrick break; 61e5dd7070Spatrick 62e5dd7070Spatrick case llvm::Triple::sparcv9: { 63e5dd7070Spatrick CmdArgs.push_back("-64"); 64*7a9b00ceSrobert std::string CPU = getCPUName(D, Args, Triple); 65*7a9b00ceSrobert CmdArgs.push_back(sparc::getSparcAsmModeForCPU(CPU, Triple)); 66*7a9b00ceSrobert AddAssemblerKPIC(ToolChain, Args, CmdArgs); 67e5dd7070Spatrick break; 68e5dd7070Spatrick } 69e5dd7070Spatrick 70e5dd7070Spatrick case llvm::Triple::mips64: 71e5dd7070Spatrick case llvm::Triple::mips64el: { 72e5dd7070Spatrick StringRef CPUName; 73e5dd7070Spatrick StringRef ABIName; 74*7a9b00ceSrobert mips::getMipsCPUAndABI(Args, Triple, CPUName, ABIName); 75*7a9b00ceSrobert 76*7a9b00ceSrobert CmdArgs.push_back("-march"); 77*7a9b00ceSrobert CmdArgs.push_back(CPUName.data()); 78e5dd7070Spatrick 79e5dd7070Spatrick CmdArgs.push_back("-mabi"); 80e5dd7070Spatrick CmdArgs.push_back(mips::getGnuCompatibleMipsABIName(ABIName).data()); 81e5dd7070Spatrick 82*7a9b00ceSrobert if (Triple.isLittleEndian()) 83e5dd7070Spatrick CmdArgs.push_back("-EL"); 84e5dd7070Spatrick else 85e5dd7070Spatrick CmdArgs.push_back("-EB"); 86e5dd7070Spatrick 87*7a9b00ceSrobert AddAssemblerKPIC(ToolChain, Args, CmdArgs); 88e5dd7070Spatrick break; 89e5dd7070Spatrick } 90e5dd7070Spatrick 91e5dd7070Spatrick default: 92e5dd7070Spatrick break; 93e5dd7070Spatrick } 94e5dd7070Spatrick 95e5dd7070Spatrick Args.AddAllArgValues(CmdArgs, options::OPT_Wa_COMMA, options::OPT_Xassembler); 96e5dd7070Spatrick 97e5dd7070Spatrick CmdArgs.push_back("-o"); 98e5dd7070Spatrick CmdArgs.push_back(Output.getFilename()); 99e5dd7070Spatrick 100e5dd7070Spatrick for (const auto &II : Inputs) 101e5dd7070Spatrick CmdArgs.push_back(II.getFilename()); 102e5dd7070Spatrick 103*7a9b00ceSrobert const char *Exec = Args.MakeArgString(ToolChain.GetProgramPath("as")); 104a0747c9fSpatrick C.addCommand(std::make_unique<Command>(JA, *this, 105a0747c9fSpatrick ResponseFileSupport::AtFileCurCP(), 106a0747c9fSpatrick Exec, CmdArgs, Inputs, Output)); 107e5dd7070Spatrick } 108e5dd7070Spatrick 109e5dd7070Spatrick void openbsd::Linker::ConstructJob(Compilation &C, const JobAction &JA, 110e5dd7070Spatrick const InputInfo &Output, 111e5dd7070Spatrick const InputInfoList &Inputs, 112e5dd7070Spatrick const ArgList &Args, 113e5dd7070Spatrick const char *LinkingOutput) const { 114e5dd7070Spatrick const toolchains::OpenBSD &ToolChain = 115e5dd7070Spatrick static_cast<const toolchains::OpenBSD &>(getToolChain()); 116*7a9b00ceSrobert const Driver &D = ToolChain.getDriver(); 117*7a9b00ceSrobert const llvm::Triple::ArchType Arch = ToolChain.getArch(); 118e5dd7070Spatrick ArgStringList CmdArgs; 119e5dd7070Spatrick 120e5dd7070Spatrick // Silence warning for "clang -g foo.o -o foo" 121e5dd7070Spatrick Args.ClaimAllArgs(options::OPT_g_Group); 122e5dd7070Spatrick // and "clang -emit-llvm foo.o -o foo" 123e5dd7070Spatrick Args.ClaimAllArgs(options::OPT_emit_llvm); 124e5dd7070Spatrick // and for "clang -w foo.o -o foo". Other warning options are already 125e5dd7070Spatrick // handled somewhere else. 126e5dd7070Spatrick Args.ClaimAllArgs(options::OPT_w); 127e5dd7070Spatrick 128*7a9b00ceSrobert if (!D.SysRoot.empty()) 129*7a9b00ceSrobert CmdArgs.push_back(Args.MakeArgString("--sysroot=" + D.SysRoot)); 130*7a9b00ceSrobert 131*7a9b00ceSrobert if (Arch == llvm::Triple::mips64) 132e5dd7070Spatrick CmdArgs.push_back("-EB"); 133*7a9b00ceSrobert else if (Arch == llvm::Triple::mips64el) 134e5dd7070Spatrick CmdArgs.push_back("-EL"); 135e5dd7070Spatrick 136e5dd7070Spatrick if (!Args.hasArg(options::OPT_nostdlib, options::OPT_shared)) { 137e5dd7070Spatrick CmdArgs.push_back("-e"); 138e5dd7070Spatrick CmdArgs.push_back("__start"); 139e5dd7070Spatrick } 140e5dd7070Spatrick 141e5dd7070Spatrick CmdArgs.push_back("--eh-frame-hdr"); 142e5dd7070Spatrick if (Args.hasArg(options::OPT_static)) { 143e5dd7070Spatrick CmdArgs.push_back("-Bstatic"); 144e5dd7070Spatrick } else { 145e5dd7070Spatrick if (Args.hasArg(options::OPT_rdynamic)) 146e5dd7070Spatrick CmdArgs.push_back("-export-dynamic"); 147e5dd7070Spatrick CmdArgs.push_back("-Bdynamic"); 148e5dd7070Spatrick if (Args.hasArg(options::OPT_shared)) { 149e5dd7070Spatrick CmdArgs.push_back("-shared"); 150*7a9b00ceSrobert } else if (!Args.hasArg(options::OPT_r)) { 151e5dd7070Spatrick CmdArgs.push_back("-dynamic-linker"); 152e5dd7070Spatrick CmdArgs.push_back("/usr/libexec/ld.so"); 153e5dd7070Spatrick } 154e5dd7070Spatrick } 155e5dd7070Spatrick 156e5dd7070Spatrick if (Args.hasArg(options::OPT_pie)) 157e5dd7070Spatrick CmdArgs.push_back("-pie"); 158e5dd7070Spatrick if (Args.hasArg(options::OPT_nopie) || Args.hasArg(options::OPT_pg)) 159e5dd7070Spatrick CmdArgs.push_back("-nopie"); 160e5dd7070Spatrick 161*7a9b00ceSrobert if (Arch == llvm::Triple::riscv64) 162*7a9b00ceSrobert CmdArgs.push_back("-X"); 163*7a9b00ceSrobert 164e5dd7070Spatrick if (Output.isFilename()) { 165e5dd7070Spatrick CmdArgs.push_back("-o"); 166e5dd7070Spatrick CmdArgs.push_back(Output.getFilename()); 167e5dd7070Spatrick } else { 168e5dd7070Spatrick assert(Output.isNothing() && "Invalid output."); 169e5dd7070Spatrick } 170e5dd7070Spatrick 171*7a9b00ceSrobert if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles, 172*7a9b00ceSrobert options::OPT_r)) { 173e5dd7070Spatrick const char *crt0 = nullptr; 174e5dd7070Spatrick const char *crtbegin = nullptr; 175e5dd7070Spatrick if (!Args.hasArg(options::OPT_shared)) { 176e5dd7070Spatrick if (Args.hasArg(options::OPT_pg)) 177e5dd7070Spatrick crt0 = "gcrt0.o"; 178e5dd7070Spatrick else if (Args.hasArg(options::OPT_static) && 179e5dd7070Spatrick !Args.hasArg(options::OPT_nopie)) 180e5dd7070Spatrick crt0 = "rcrt0.o"; 181e5dd7070Spatrick else 182e5dd7070Spatrick crt0 = "crt0.o"; 183e5dd7070Spatrick crtbegin = "crtbegin.o"; 184e5dd7070Spatrick } else { 185e5dd7070Spatrick crtbegin = "crtbeginS.o"; 186e5dd7070Spatrick } 187e5dd7070Spatrick 188e5dd7070Spatrick if (crt0) 189e5dd7070Spatrick CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath(crt0))); 190e5dd7070Spatrick CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath(crtbegin))); 191e5dd7070Spatrick } 192e5dd7070Spatrick 193e5dd7070Spatrick Args.AddAllArgs(CmdArgs, options::OPT_L); 194e5dd7070Spatrick ToolChain.AddFilePathLibArgs(Args, CmdArgs); 195e5dd7070Spatrick Args.AddAllArgs(CmdArgs, {options::OPT_T_Group, options::OPT_e, 196e5dd7070Spatrick options::OPT_s, options::OPT_t, 197e5dd7070Spatrick options::OPT_Z_Flag, options::OPT_r}); 198e5dd7070Spatrick 199e5dd7070Spatrick bool NeedsSanitizerDeps = addSanitizerRuntimes(ToolChain, Args, CmdArgs); 200e5dd7070Spatrick bool NeedsXRayDeps = addXRayRuntime(ToolChain, Args, CmdArgs); 201e5dd7070Spatrick AddLinkerInputs(ToolChain, Inputs, Args, CmdArgs, JA); 202e5dd7070Spatrick 203*7a9b00ceSrobert if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs, 204*7a9b00ceSrobert options::OPT_r)) { 205a0747c9fSpatrick // Use the static OpenMP runtime with -static-openmp 206a0747c9fSpatrick bool StaticOpenMP = Args.hasArg(options::OPT_static_openmp) && 207a0747c9fSpatrick !Args.hasArg(options::OPT_static); 208a0747c9fSpatrick addOpenMPRuntime(CmdArgs, ToolChain, Args, StaticOpenMP); 209a0747c9fSpatrick 210e5dd7070Spatrick if (D.CCCIsCXX()) { 211e5dd7070Spatrick if (ToolChain.ShouldLinkCXXStdlib(Args)) 212e5dd7070Spatrick ToolChain.AddCXXStdlibLibArgs(Args, CmdArgs); 213e5dd7070Spatrick if (Args.hasArg(options::OPT_pg)) 214e5dd7070Spatrick CmdArgs.push_back("-lm_p"); 215e5dd7070Spatrick else 216e5dd7070Spatrick CmdArgs.push_back("-lm"); 217e5dd7070Spatrick } 218e5dd7070Spatrick if (NeedsSanitizerDeps) { 219e5dd7070Spatrick CmdArgs.push_back(ToolChain.getCompilerRTArgString(Args, "builtins")); 220e5dd7070Spatrick linkSanitizerRuntimeDeps(ToolChain, CmdArgs); 221e5dd7070Spatrick } 222e5dd7070Spatrick if (NeedsXRayDeps) { 223e5dd7070Spatrick CmdArgs.push_back(ToolChain.getCompilerRTArgString(Args, "builtins")); 224e5dd7070Spatrick linkXRayRuntimeDeps(ToolChain, CmdArgs); 225e5dd7070Spatrick } 2260fc8bc13Sgnezdo // FIXME: For some reason GCC passes -lgcc before adding 2270fc8bc13Sgnezdo // the default system libraries. Just mimic this for now. 2280fc8bc13Sgnezdo CmdArgs.push_back("-lcompiler_rt"); 229e5dd7070Spatrick 230e5dd7070Spatrick if (Args.hasArg(options::OPT_pthread)) { 231e5dd7070Spatrick if (!Args.hasArg(options::OPT_shared) && Args.hasArg(options::OPT_pg)) 232e5dd7070Spatrick CmdArgs.push_back("-lpthread_p"); 233e5dd7070Spatrick else 234e5dd7070Spatrick CmdArgs.push_back("-lpthread"); 235e5dd7070Spatrick } 236e5dd7070Spatrick 237e5dd7070Spatrick if (!Args.hasArg(options::OPT_shared)) { 238e5dd7070Spatrick if (Args.hasArg(options::OPT_pg)) 239e5dd7070Spatrick CmdArgs.push_back("-lc_p"); 240e5dd7070Spatrick else 241e5dd7070Spatrick CmdArgs.push_back("-lc"); 242e5dd7070Spatrick } 243e5dd7070Spatrick 244e5dd7070Spatrick CmdArgs.push_back("-lcompiler_rt"); 245e5dd7070Spatrick } 246e5dd7070Spatrick 247*7a9b00ceSrobert if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles, 248*7a9b00ceSrobert options::OPT_r)) { 249e5dd7070Spatrick const char *crtend = nullptr; 250e5dd7070Spatrick if (!Args.hasArg(options::OPT_shared)) 251e5dd7070Spatrick crtend = "crtend.o"; 252e5dd7070Spatrick else 253e5dd7070Spatrick crtend = "crtendS.o"; 254e5dd7070Spatrick 255e5dd7070Spatrick CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath(crtend))); 256e5dd7070Spatrick } 257e5dd7070Spatrick 258ab29ea96Sfcambus ToolChain.addProfileRTLibs(Args, CmdArgs); 259ab29ea96Sfcambus 260e5dd7070Spatrick const char *Exec = Args.MakeArgString(ToolChain.GetLinkerPath()); 261a0747c9fSpatrick C.addCommand(std::make_unique<Command>(JA, *this, 262a0747c9fSpatrick ResponseFileSupport::AtFileCurCP(), 263a0747c9fSpatrick Exec, CmdArgs, Inputs, Output)); 264e5dd7070Spatrick } 265e5dd7070Spatrick 266e5dd7070Spatrick SanitizerMask OpenBSD::getSupportedSanitizers() const { 267e5dd7070Spatrick const bool IsX86 = getTriple().getArch() == llvm::Triple::x86; 268e5dd7070Spatrick const bool IsX86_64 = getTriple().getArch() == llvm::Triple::x86_64; 269e5dd7070Spatrick 270e5dd7070Spatrick // For future use, only UBsan at the moment 271e5dd7070Spatrick SanitizerMask Res = ToolChain::getSupportedSanitizers(); 272e5dd7070Spatrick 273e5dd7070Spatrick if (IsX86 || IsX86_64) { 274e5dd7070Spatrick Res |= SanitizerKind::Vptr; 275e5dd7070Spatrick Res |= SanitizerKind::Fuzzer; 276e5dd7070Spatrick Res |= SanitizerKind::FuzzerNoLink; 277e5dd7070Spatrick } 278e5dd7070Spatrick 27968d04839Sgnezdo if (IsX86_64) { 28068d04839Sgnezdo Res |= SanitizerKind::KernelAddress; 28168d04839Sgnezdo } 28268d04839Sgnezdo 283e5dd7070Spatrick return Res; 284e5dd7070Spatrick } 285e5dd7070Spatrick 286e5dd7070Spatrick /// OpenBSD - OpenBSD tool chain which can call as(1) and ld(1) directly. 287e5dd7070Spatrick 288e5dd7070Spatrick OpenBSD::OpenBSD(const Driver &D, const llvm::Triple &Triple, 289e5dd7070Spatrick const ArgList &Args) 290e5dd7070Spatrick : Generic_ELF(D, Triple, Args) { 291*7a9b00ceSrobert getFilePaths().push_back(concat(getDriver().SysRoot, "/usr/lib")); 292e5dd7070Spatrick } 293e5dd7070Spatrick 294ec727ea7Spatrick void OpenBSD::AddClangSystemIncludeArgs( 295ec727ea7Spatrick const llvm::opt::ArgList &DriverArgs, 296ec727ea7Spatrick llvm::opt::ArgStringList &CC1Args) const { 297ec727ea7Spatrick const Driver &D = getDriver(); 298ec727ea7Spatrick 299ec727ea7Spatrick if (DriverArgs.hasArg(clang::driver::options::OPT_nostdinc)) 300ec727ea7Spatrick return; 301ec727ea7Spatrick 302ec727ea7Spatrick if (!DriverArgs.hasArg(options::OPT_nobuiltininc)) { 303ec727ea7Spatrick SmallString<128> Dir(D.ResourceDir); 304ec727ea7Spatrick llvm::sys::path::append(Dir, "include"); 305ec727ea7Spatrick addSystemInclude(DriverArgs, CC1Args, Dir.str()); 306ec727ea7Spatrick } 307ec727ea7Spatrick 308ec727ea7Spatrick if (DriverArgs.hasArg(options::OPT_nostdlibinc)) 309ec727ea7Spatrick return; 310ec727ea7Spatrick 311ec727ea7Spatrick // Check for configure-time C include directories. 312ec727ea7Spatrick StringRef CIncludeDirs(C_INCLUDE_DIRS); 313ec727ea7Spatrick if (CIncludeDirs != "") { 314ec727ea7Spatrick SmallVector<StringRef, 5> dirs; 315ec727ea7Spatrick CIncludeDirs.split(dirs, ":"); 316ec727ea7Spatrick for (StringRef dir : dirs) { 317ec727ea7Spatrick StringRef Prefix = 318ec727ea7Spatrick llvm::sys::path::is_absolute(dir) ? StringRef(D.SysRoot) : ""; 319ec727ea7Spatrick addExternCSystemInclude(DriverArgs, CC1Args, Prefix + dir); 320ec727ea7Spatrick } 321ec727ea7Spatrick return; 322ec727ea7Spatrick } 323ec727ea7Spatrick 324*7a9b00ceSrobert addExternCSystemInclude(DriverArgs, CC1Args, 325*7a9b00ceSrobert concat(D.SysRoot, "/usr/include")); 326ec727ea7Spatrick } 327ec727ea7Spatrick 328ec727ea7Spatrick void OpenBSD::addLibCxxIncludePaths(const llvm::opt::ArgList &DriverArgs, 329ec727ea7Spatrick llvm::opt::ArgStringList &CC1Args) const { 330ec727ea7Spatrick addSystemInclude(DriverArgs, CC1Args, 331*7a9b00ceSrobert concat(getDriver().SysRoot, "/usr/include/c++/v1")); 332ec727ea7Spatrick } 333ec727ea7Spatrick 334ec727ea7Spatrick void OpenBSD::AddCXXStdlibLibArgs(const ArgList &Args, 335ec727ea7Spatrick ArgStringList &CmdArgs) const { 336ec727ea7Spatrick bool Profiling = Args.hasArg(options::OPT_pg); 337ec727ea7Spatrick 338ec727ea7Spatrick CmdArgs.push_back(Profiling ? "-lc++_p" : "-lc++"); 339*7a9b00ceSrobert if (Args.hasArg(options::OPT_fexperimental_library)) 340*7a9b00ceSrobert CmdArgs.push_back("-lc++experimental"); 341ec727ea7Spatrick CmdArgs.push_back(Profiling ? "-lc++abi_p" : "-lc++abi"); 342adae0cfdSpatrick CmdArgs.push_back(Profiling ? "-lpthread_p" : "-lpthread"); 343ec727ea7Spatrick } 344ec727ea7Spatrick 345*7a9b00ceSrobert std::string OpenBSD::getCompilerRT(const ArgList &Args, StringRef Component, 346ec727ea7Spatrick FileType Type) const { 3470b99cc4dSgnezdo if (Component == "builtins") { 348ec727ea7Spatrick SmallString<128> Path(getDriver().SysRoot); 349ec727ea7Spatrick llvm::sys::path::append(Path, "/usr/lib/libcompiler_rt.a"); 350ec727ea7Spatrick return std::string(Path.str()); 351*7a9b00ceSrobert } 3520b99cc4dSgnezdo SmallString<128> P(getDriver().ResourceDir); 3530b99cc4dSgnezdo std::string CRTBasename = 354a0747c9fSpatrick buildCompilerRTBasename(Args, Component, Type, /*AddArch=*/false); 3550b99cc4dSgnezdo llvm::sys::path::append(P, "lib", CRTBasename); 356*7a9b00ceSrobert // Checks if this is the base system case which uses a different location. 357a0747c9fSpatrick if (getVFS().exists(P)) 3580b99cc4dSgnezdo return std::string(P.str()); 359a0747c9fSpatrick return ToolChain::getCompilerRT(Args, Component, Type); 3600b99cc4dSgnezdo } 361ec727ea7Spatrick 362e5dd7070Spatrick Tool *OpenBSD::buildAssembler() const { 363e5dd7070Spatrick return new tools::openbsd::Assembler(*this); 364e5dd7070Spatrick } 365e5dd7070Spatrick 366e5dd7070Spatrick Tool *OpenBSD::buildLinker() const { return new tools::openbsd::Linker(*this); } 367e5dd7070Spatrick 368ec727ea7Spatrick bool OpenBSD::HasNativeLLVMSupport() const { return true; } 369*7a9b00ceSrobert 370*7a9b00ceSrobert ToolChain::UnwindTableLevel 371*7a9b00ceSrobert OpenBSD::getDefaultUnwindTableLevel(const ArgList &Args) const { 372*7a9b00ceSrobert switch (getArch()) { 373*7a9b00ceSrobert case llvm::Triple::arm: 374*7a9b00ceSrobert return UnwindTableLevel::None; 375*7a9b00ceSrobert default: 376*7a9b00ceSrobert return UnwindTableLevel::Asynchronous; 377*7a9b00ceSrobert } 378*7a9b00ceSrobert } 379