1 //===--- FreeBSD.cpp - FreeBSD ToolChain Implementations --------*- C++ -*-===//
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
7 //===----------------------------------------------------------------------===//
11 #include "Arch/Mips.h"
12 #include "Arch/Sparc.h"
13 #include "CommonArgs.h"
14 #include "clang/Driver/Compilation.h"
15 #include "clang/Driver/DriverDiagnostic.h"
16 #include "clang/Driver/Options.h"
17 #include "clang/Driver/SanitizerArgs.h"
18 #include "llvm/Option/ArgList.h"
19 #include "llvm/Support/VirtualFileSystem.h"
21 using namespace clang::driver;
22 using namespace clang::driver::tools;
23 using namespace clang::driver::toolchains;
24 using namespace clang;
25 using namespace llvm::opt;
27 void freebsd::Assembler::ConstructJob(Compilation &C, const JobAction &JA,
28 const InputInfo &Output,
29 const InputInfoList &Inputs,
31 const char *LinkingOutput) const {
32 claimNoWarnArgs(Args);
33 ArgStringList CmdArgs;
34 const auto &D = getToolChain().getDriver();
36 // When building 32-bit code on FreeBSD/amd64, we have to explicitly
37 // instruct as in the base system to assemble 32-bit code.
38 switch (getToolChain().getArch()) {
41 case llvm::Triple::x86:
42 CmdArgs.push_back("--32");
44 case llvm::Triple::ppc:
45 CmdArgs.push_back("-a32");
47 case llvm::Triple::mips:
48 case llvm::Triple::mipsel:
49 case llvm::Triple::mips64:
50 case llvm::Triple::mips64el: {
53 mips::getMipsCPUAndABI(Args, getToolChain().getTriple(), CPUName, ABIName);
55 CmdArgs.push_back("-march");
56 CmdArgs.push_back(CPUName.data());
58 CmdArgs.push_back("-mabi");
59 CmdArgs.push_back(mips::getGnuCompatibleMipsABIName(ABIName).data());
61 if (getToolChain().getTriple().isLittleEndian())
62 CmdArgs.push_back("-EL");
64 CmdArgs.push_back("-EB");
66 if (Arg *A = Args.getLastArg(options::OPT_G)) {
67 StringRef v = A->getValue();
68 CmdArgs.push_back(Args.MakeArgString("-G" + v));
72 AddAssemblerKPIC(getToolChain(), Args, CmdArgs);
75 case llvm::Triple::arm:
76 case llvm::Triple::armeb:
77 case llvm::Triple::thumb:
78 case llvm::Triple::thumbeb: {
79 arm::FloatABI ABI = arm::getARMFloatABI(getToolChain(), Args);
81 if (ABI == arm::FloatABI::Hard)
82 CmdArgs.push_back("-mfpu=vfp");
84 CmdArgs.push_back("-mfpu=softvfp");
86 switch (getToolChain().getTriple().getEnvironment()) {
87 case llvm::Triple::GNUEABIHF:
88 case llvm::Triple::GNUEABI:
89 case llvm::Triple::EABI:
90 CmdArgs.push_back("-meabi=5");
94 CmdArgs.push_back("-matpcs");
98 case llvm::Triple::sparc:
99 case llvm::Triple::sparcel:
100 case llvm::Triple::sparcv9: {
101 std::string CPU = getCPUName(Args, getToolChain().getTriple());
102 CmdArgs.push_back(sparc::getSparcAsmModeForCPU(CPU, getToolChain().getTriple()));
103 AddAssemblerKPIC(getToolChain(), Args, CmdArgs);
108 for (const Arg *A : Args.filtered(options::OPT_ffile_prefix_map_EQ,
109 options::OPT_fdebug_prefix_map_EQ)) {
110 StringRef Map = A->getValue();
111 if (Map.find('=') == StringRef::npos)
112 D.Diag(diag::err_drv_invalid_argument_to_option)
113 << Map << A->getOption().getName();
115 CmdArgs.push_back(Args.MakeArgString("--debug-prefix-map"));
116 CmdArgs.push_back(Args.MakeArgString(Map));
121 Args.AddAllArgValues(CmdArgs, options::OPT_Wa_COMMA, options::OPT_Xassembler);
123 CmdArgs.push_back("-o");
124 CmdArgs.push_back(Output.getFilename());
126 for (const auto &II : Inputs)
127 CmdArgs.push_back(II.getFilename());
129 const char *Exec = Args.MakeArgString(getToolChain().GetProgramPath("as"));
130 C.addCommand(std::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));
133 void freebsd::Linker::ConstructJob(Compilation &C, const JobAction &JA,
134 const InputInfo &Output,
135 const InputInfoList &Inputs,
137 const char *LinkingOutput) const {
138 const toolchains::FreeBSD &ToolChain =
139 static_cast<const toolchains::FreeBSD &>(getToolChain());
140 const Driver &D = ToolChain.getDriver();
141 const llvm::Triple::ArchType Arch = ToolChain.getArch();
143 !Args.hasArg(options::OPT_shared) &&
144 (Args.hasArg(options::OPT_pie) || ToolChain.isPIEDefault());
145 ArgStringList CmdArgs;
147 // Silence warning for "clang -g foo.o -o foo"
148 Args.ClaimAllArgs(options::OPT_g_Group);
149 // and "clang -emit-llvm foo.o -o foo"
150 Args.ClaimAllArgs(options::OPT_emit_llvm);
151 // and for "clang -w foo.o -o foo". Other warning options are already
152 // handled somewhere else.
153 Args.ClaimAllArgs(options::OPT_w);
155 if (!D.SysRoot.empty())
156 CmdArgs.push_back(Args.MakeArgString("--sysroot=" + D.SysRoot));
159 CmdArgs.push_back("-pie");
161 CmdArgs.push_back("--eh-frame-hdr");
162 if (Args.hasArg(options::OPT_static)) {
163 CmdArgs.push_back("-Bstatic");
165 if (Args.hasArg(options::OPT_rdynamic))
166 CmdArgs.push_back("-export-dynamic");
167 if (Args.hasArg(options::OPT_shared)) {
168 CmdArgs.push_back("-Bshareable");
170 CmdArgs.push_back("-dynamic-linker");
171 CmdArgs.push_back("/libexec/ld-elf.so.1");
173 const llvm::Triple &T = ToolChain.getTriple();
174 if (T.getOSMajorVersion() >= 9) {
175 if (Arch == llvm::Triple::arm || Arch == llvm::Triple::sparc || T.isX86())
176 CmdArgs.push_back("--hash-style=both");
178 CmdArgs.push_back("--enable-new-dtags");
181 // Explicitly set the linker emulation for platforms that might not
182 // be the default emulation for the linker.
184 case llvm::Triple::x86:
185 CmdArgs.push_back("-m");
186 CmdArgs.push_back("elf_i386_fbsd");
188 case llvm::Triple::ppc:
189 CmdArgs.push_back("-m");
190 CmdArgs.push_back("elf32ppc_fbsd");
192 case llvm::Triple::mips:
193 CmdArgs.push_back("-m");
194 CmdArgs.push_back("elf32btsmip_fbsd");
196 case llvm::Triple::mipsel:
197 CmdArgs.push_back("-m");
198 CmdArgs.push_back("elf32ltsmip_fbsd");
200 case llvm::Triple::mips64:
201 CmdArgs.push_back("-m");
202 if (tools::mips::hasMipsAbiArg(Args, "n32"))
203 CmdArgs.push_back("elf32btsmipn32_fbsd");
205 CmdArgs.push_back("elf64btsmip_fbsd");
207 case llvm::Triple::mips64el:
208 CmdArgs.push_back("-m");
209 if (tools::mips::hasMipsAbiArg(Args, "n32"))
210 CmdArgs.push_back("elf32ltsmipn32_fbsd");
212 CmdArgs.push_back("elf64ltsmip_fbsd");
214 case llvm::Triple::riscv32:
215 CmdArgs.push_back("-m");
216 CmdArgs.push_back("elf32lriscv");
218 case llvm::Triple::riscv64:
219 CmdArgs.push_back("-m");
220 CmdArgs.push_back("elf64lriscv");
226 if (Arg *A = Args.getLastArg(options::OPT_G)) {
227 if (ToolChain.getTriple().isMIPS()) {
228 StringRef v = A->getValue();
229 CmdArgs.push_back(Args.MakeArgString("-G" + v));
234 if (Output.isFilename()) {
235 CmdArgs.push_back("-o");
236 CmdArgs.push_back(Output.getFilename());
238 assert(Output.isNothing() && "Invalid output.");
241 if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles)) {
242 const char *crt1 = nullptr;
243 if (!Args.hasArg(options::OPT_shared)) {
244 if (Args.hasArg(options::OPT_pg))
252 CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath(crt1)));
254 CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crti.o")));
256 const char *crtbegin = nullptr;
257 if (Args.hasArg(options::OPT_static))
258 crtbegin = "crtbeginT.o";
259 else if (Args.hasArg(options::OPT_shared) || IsPIE)
260 crtbegin = "crtbeginS.o";
262 crtbegin = "crtbegin.o";
264 CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath(crtbegin)));
267 Args.AddAllArgs(CmdArgs, options::OPT_L);
268 ToolChain.AddFilePathLibArgs(Args, CmdArgs);
269 Args.AddAllArgs(CmdArgs, options::OPT_T_Group);
270 Args.AddAllArgs(CmdArgs, options::OPT_e);
271 Args.AddAllArgs(CmdArgs, options::OPT_s);
272 Args.AddAllArgs(CmdArgs, options::OPT_t);
273 Args.AddAllArgs(CmdArgs, options::OPT_Z_Flag);
274 Args.AddAllArgs(CmdArgs, options::OPT_r);
276 if (D.isUsingLTO()) {
277 assert(!Inputs.empty() && "Must have at least one input.");
278 AddGoldPlugin(ToolChain, Args, CmdArgs, Output, Inputs[0],
279 D.getLTOMode() == LTOK_Thin);
282 bool NeedsSanitizerDeps = addSanitizerRuntimes(ToolChain, Args, CmdArgs);
283 bool NeedsXRayDeps = addXRayRuntime(ToolChain, Args, CmdArgs);
284 AddLinkerInputs(ToolChain, Inputs, Args, CmdArgs, JA);
286 if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs)) {
287 // Use the static OpenMP runtime with -static-openmp
288 bool StaticOpenMP = Args.hasArg(options::OPT_static_openmp) &&
289 !Args.hasArg(options::OPT_static);
290 addOpenMPRuntime(CmdArgs, ToolChain, Args, StaticOpenMP);
293 if (ToolChain.ShouldLinkCXXStdlib(Args))
294 ToolChain.AddCXXStdlibLibArgs(Args, CmdArgs);
295 if (Args.hasArg(options::OPT_pg))
296 CmdArgs.push_back("-lm_p");
298 CmdArgs.push_back("-lm");
300 if (NeedsSanitizerDeps)
301 linkSanitizerRuntimeDeps(ToolChain, CmdArgs);
303 linkXRayRuntimeDeps(ToolChain, CmdArgs);
304 // FIXME: For some reason GCC passes -lgcc and -lgcc_s before adding
305 // the default system libraries. Just mimic this for now.
306 if (Args.hasArg(options::OPT_pg))
307 CmdArgs.push_back("-lgcc_p");
309 CmdArgs.push_back("-lgcc");
310 if (Args.hasArg(options::OPT_static)) {
311 CmdArgs.push_back("-lgcc_eh");
312 } else if (Args.hasArg(options::OPT_pg)) {
313 CmdArgs.push_back("-lgcc_eh_p");
315 CmdArgs.push_back("--as-needed");
316 CmdArgs.push_back("-lgcc_s");
317 CmdArgs.push_back("--no-as-needed");
320 if (Args.hasArg(options::OPT_pthread)) {
321 if (Args.hasArg(options::OPT_pg))
322 CmdArgs.push_back("-lpthread_p");
324 CmdArgs.push_back("-lpthread");
327 if (Args.hasArg(options::OPT_pg)) {
328 if (Args.hasArg(options::OPT_shared))
329 CmdArgs.push_back("-lc");
331 CmdArgs.push_back("-lc_p");
332 CmdArgs.push_back("-lgcc_p");
334 CmdArgs.push_back("-lc");
335 CmdArgs.push_back("-lgcc");
338 if (Args.hasArg(options::OPT_static)) {
339 CmdArgs.push_back("-lgcc_eh");
340 } else if (Args.hasArg(options::OPT_pg)) {
341 CmdArgs.push_back("-lgcc_eh_p");
343 CmdArgs.push_back("--as-needed");
344 CmdArgs.push_back("-lgcc_s");
345 CmdArgs.push_back("--no-as-needed");
349 if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles)) {
350 if (Args.hasArg(options::OPT_shared) || IsPIE)
351 CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crtendS.o")));
353 CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crtend.o")));
354 CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crtn.o")));
357 ToolChain.addProfileRTLibs(Args, CmdArgs);
359 const char *Exec = Args.MakeArgString(getToolChain().GetLinkerPath());
360 C.addCommand(std::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));
363 /// FreeBSD - FreeBSD tool chain which can call as(1) and ld(1) directly.
365 FreeBSD::FreeBSD(const Driver &D, const llvm::Triple &Triple,
367 : Generic_ELF(D, Triple, Args) {
369 // When targeting 32-bit platforms, look for '/usr/lib32/crt1.o' and fall
370 // back to '/usr/lib' if it doesn't exist.
371 if ((Triple.getArch() == llvm::Triple::x86 || Triple.isMIPS32() ||
372 Triple.getArch() == llvm::Triple::ppc) &&
373 D.getVFS().exists(getDriver().SysRoot + "/usr/lib32/crt1.o"))
374 getFilePaths().push_back(getDriver().SysRoot + "/usr/lib32");
376 getFilePaths().push_back(getDriver().SysRoot + "/usr/lib");
379 ToolChain::CXXStdlibType FreeBSD::GetDefaultCXXStdlibType() const {
380 if (getTriple().getOSMajorVersion() >= 10)
381 return ToolChain::CST_Libcxx;
382 return ToolChain::CST_Libstdcxx;
385 unsigned FreeBSD::GetDefaultDwarfVersion() const {
386 if (getTriple().getOSMajorVersion() < 12)
391 void FreeBSD::addLibStdCxxIncludePaths(
392 const llvm::opt::ArgList &DriverArgs,
393 llvm::opt::ArgStringList &CC1Args) const {
394 addLibStdCXXIncludePaths(getDriver().SysRoot, "/usr/include/c++/4.2", "", "",
395 "", "", DriverArgs, CC1Args);
398 void FreeBSD::AddCXXStdlibLibArgs(const ArgList &Args,
399 ArgStringList &CmdArgs) const {
400 CXXStdlibType Type = GetCXXStdlibType(Args);
401 bool Profiling = Args.hasArg(options::OPT_pg);
404 case ToolChain::CST_Libcxx:
405 CmdArgs.push_back(Profiling ? "-lc++_p" : "-lc++");
408 case ToolChain::CST_Libstdcxx:
409 CmdArgs.push_back(Profiling ? "-lstdc++_p" : "-lstdc++");
414 void FreeBSD::AddCudaIncludeArgs(const ArgList &DriverArgs,
415 ArgStringList &CC1Args) const {
416 CudaInstallation.AddCudaIncludeArgs(DriverArgs, CC1Args);
419 Tool *FreeBSD::buildAssembler() const {
420 return new tools::freebsd::Assembler(*this);
423 Tool *FreeBSD::buildLinker() const { return new tools::freebsd::Linker(*this); }
425 llvm::ExceptionHandling FreeBSD::GetExceptionModel(const ArgList &Args) const {
426 // FreeBSD uses SjLj exceptions on ARM oabi.
427 switch (getTriple().getEnvironment()) {
428 case llvm::Triple::GNUEABIHF:
429 case llvm::Triple::GNUEABI:
430 case llvm::Triple::EABI:
431 return llvm::ExceptionHandling::None;
433 if (getTriple().getArch() == llvm::Triple::arm ||
434 getTriple().getArch() == llvm::Triple::thumb)
435 return llvm::ExceptionHandling::SjLj;
436 return llvm::ExceptionHandling::None;
440 bool FreeBSD::HasNativeLLVMSupport() const { return true; }
442 bool FreeBSD::IsUnwindTablesDefault(const ArgList &Args) const { return true; }
444 bool FreeBSD::isPIEDefault() const { return getSanitizerArgs().requiresPIE(); }
446 SanitizerMask FreeBSD::getSupportedSanitizers() const {
447 const bool IsX86 = getTriple().getArch() == llvm::Triple::x86;
448 const bool IsX86_64 = getTriple().getArch() == llvm::Triple::x86_64;
449 const bool IsMIPS64 = getTriple().isMIPS64();
450 SanitizerMask Res = ToolChain::getSupportedSanitizers();
451 Res |= SanitizerKind::Address;
452 Res |= SanitizerKind::PointerCompare;
453 Res |= SanitizerKind::PointerSubtract;
454 Res |= SanitizerKind::Vptr;
455 if (IsX86_64 || IsMIPS64) {
456 Res |= SanitizerKind::Leak;
457 Res |= SanitizerKind::Thread;
459 if (IsX86 || IsX86_64) {
460 Res |= SanitizerKind::Function;
461 Res |= SanitizerKind::SafeStack;
462 Res |= SanitizerKind::Fuzzer;
463 Res |= SanitizerKind::FuzzerNoLink;
466 Res |= SanitizerKind::Memory;
470 void FreeBSD::addClangTargetOptions(const ArgList &DriverArgs,
471 ArgStringList &CC1Args,
472 Action::OffloadKind) const {
473 if (!DriverArgs.hasFlag(options::OPT_fuse_init_array,
474 options::OPT_fno_use_init_array,
475 getTriple().getOSMajorVersion() >= 12))
476 CC1Args.push_back("-fno-use-init-array");