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());
103 sparc::getSparcAsmModeForCPU(CPU, getToolChain().getTriple()));
104 AddAssemblerKPIC(getToolChain(), Args, CmdArgs);
109 for (const Arg *A : Args.filtered(options::OPT_ffile_prefix_map_EQ,
110 options::OPT_fdebug_prefix_map_EQ)) {
111 StringRef Map = A->getValue();
112 if (Map.find('=') == StringRef::npos)
113 D.Diag(diag::err_drv_invalid_argument_to_option)
114 << Map << A->getOption().getName();
116 CmdArgs.push_back(Args.MakeArgString("--debug-prefix-map"));
117 CmdArgs.push_back(Args.MakeArgString(Map));
122 Args.AddAllArgValues(CmdArgs, options::OPT_Wa_COMMA, options::OPT_Xassembler);
124 CmdArgs.push_back("-o");
125 CmdArgs.push_back(Output.getFilename());
127 for (const auto &II : Inputs)
128 CmdArgs.push_back(II.getFilename());
130 const char *Exec = Args.MakeArgString(getToolChain().GetProgramPath("as"));
131 C.addCommand(std::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));
134 void freebsd::Linker::ConstructJob(Compilation &C, const JobAction &JA,
135 const InputInfo &Output,
136 const InputInfoList &Inputs,
138 const char *LinkingOutput) const {
139 const toolchains::FreeBSD &ToolChain =
140 static_cast<const toolchains::FreeBSD &>(getToolChain());
141 const Driver &D = ToolChain.getDriver();
142 const llvm::Triple::ArchType Arch = ToolChain.getArch();
144 !Args.hasArg(options::OPT_shared) &&
145 (Args.hasArg(options::OPT_pie) || ToolChain.isPIEDefault());
146 ArgStringList CmdArgs;
148 // Silence warning for "clang -g foo.o -o foo"
149 Args.ClaimAllArgs(options::OPT_g_Group);
150 // and "clang -emit-llvm foo.o -o foo"
151 Args.ClaimAllArgs(options::OPT_emit_llvm);
152 // and for "clang -w foo.o -o foo". Other warning options are already
153 // handled somewhere else.
154 Args.ClaimAllArgs(options::OPT_w);
156 if (!D.SysRoot.empty())
157 CmdArgs.push_back(Args.MakeArgString("--sysroot=" + D.SysRoot));
160 CmdArgs.push_back("-pie");
162 CmdArgs.push_back("--eh-frame-hdr");
163 if (Args.hasArg(options::OPT_static)) {
164 CmdArgs.push_back("-Bstatic");
166 if (Args.hasArg(options::OPT_rdynamic))
167 CmdArgs.push_back("-export-dynamic");
168 if (Args.hasArg(options::OPT_shared)) {
169 CmdArgs.push_back("-Bshareable");
171 CmdArgs.push_back("-dynamic-linker");
172 CmdArgs.push_back("/libexec/ld-elf.so.1");
174 const llvm::Triple &T = ToolChain.getTriple();
175 if (T.getOSMajorVersion() >= 9) {
176 if (Arch == llvm::Triple::arm || Arch == llvm::Triple::sparc || T.isX86())
177 CmdArgs.push_back("--hash-style=both");
179 CmdArgs.push_back("--enable-new-dtags");
182 // Explicitly set the linker emulation for platforms that might not
183 // be the default emulation for the linker.
185 case llvm::Triple::x86:
186 CmdArgs.push_back("-m");
187 CmdArgs.push_back("elf_i386_fbsd");
189 case llvm::Triple::ppc:
190 CmdArgs.push_back("-m");
191 CmdArgs.push_back("elf32ppc_fbsd");
193 case llvm::Triple::mips:
194 CmdArgs.push_back("-m");
195 CmdArgs.push_back("elf32btsmip_fbsd");
197 case llvm::Triple::mipsel:
198 CmdArgs.push_back("-m");
199 CmdArgs.push_back("elf32ltsmip_fbsd");
201 case llvm::Triple::mips64:
202 CmdArgs.push_back("-m");
203 if (tools::mips::hasMipsAbiArg(Args, "n32"))
204 CmdArgs.push_back("elf32btsmipn32_fbsd");
206 CmdArgs.push_back("elf64btsmip_fbsd");
208 case llvm::Triple::mips64el:
209 CmdArgs.push_back("-m");
210 if (tools::mips::hasMipsAbiArg(Args, "n32"))
211 CmdArgs.push_back("elf32ltsmipn32_fbsd");
213 CmdArgs.push_back("elf64ltsmip_fbsd");
215 case llvm::Triple::riscv32:
216 CmdArgs.push_back("-m");
217 CmdArgs.push_back("elf32lriscv");
219 case llvm::Triple::riscv64:
220 CmdArgs.push_back("-m");
221 CmdArgs.push_back("elf64lriscv");
227 if (Arg *A = Args.getLastArg(options::OPT_G)) {
228 if (ToolChain.getTriple().isMIPS()) {
229 StringRef v = A->getValue();
230 CmdArgs.push_back(Args.MakeArgString("-G" + v));
235 if (Output.isFilename()) {
236 CmdArgs.push_back("-o");
237 CmdArgs.push_back(Output.getFilename());
239 assert(Output.isNothing() && "Invalid output.");
242 if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles)) {
243 const char *crt1 = nullptr;
244 if (!Args.hasArg(options::OPT_shared)) {
245 if (Args.hasArg(options::OPT_pg))
253 CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath(crt1)));
255 CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crti.o")));
257 const char *crtbegin = nullptr;
258 if (Args.hasArg(options::OPT_static))
259 crtbegin = "crtbeginT.o";
260 else if (Args.hasArg(options::OPT_shared) || IsPIE)
261 crtbegin = "crtbeginS.o";
263 crtbegin = "crtbegin.o";
265 CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath(crtbegin)));
268 Args.AddAllArgs(CmdArgs, options::OPT_L);
269 ToolChain.AddFilePathLibArgs(Args, CmdArgs);
270 Args.AddAllArgs(CmdArgs, options::OPT_T_Group);
271 Args.AddAllArgs(CmdArgs, options::OPT_e);
272 Args.AddAllArgs(CmdArgs, options::OPT_s);
273 Args.AddAllArgs(CmdArgs, options::OPT_t);
274 Args.AddAllArgs(CmdArgs, options::OPT_Z_Flag);
275 Args.AddAllArgs(CmdArgs, options::OPT_r);
277 if (D.isUsingLTO()) {
278 assert(!Inputs.empty() && "Must have at least one input.");
279 AddGoldPlugin(ToolChain, Args, CmdArgs, Output, Inputs[0],
280 D.getLTOMode() == LTOK_Thin);
283 bool NeedsSanitizerDeps = addSanitizerRuntimes(ToolChain, Args, CmdArgs);
284 bool NeedsXRayDeps = addXRayRuntime(ToolChain, Args, CmdArgs);
285 AddLinkerInputs(ToolChain, Inputs, Args, CmdArgs, JA);
287 bool Profiling = Args.hasArg(options::OPT_pg) &&
288 ToolChain.getTriple().getOSMajorVersion() < 14;
289 if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs)) {
290 // Use the static OpenMP runtime with -static-openmp
291 bool StaticOpenMP = Args.hasArg(options::OPT_static_openmp) &&
292 !Args.hasArg(options::OPT_static);
293 addOpenMPRuntime(CmdArgs, ToolChain, Args, StaticOpenMP);
296 if (ToolChain.ShouldLinkCXXStdlib(Args))
297 ToolChain.AddCXXStdlibLibArgs(Args, CmdArgs);
299 CmdArgs.push_back("-lm_p");
301 CmdArgs.push_back("-lm");
303 if (NeedsSanitizerDeps)
304 linkSanitizerRuntimeDeps(ToolChain, CmdArgs);
306 linkXRayRuntimeDeps(ToolChain, CmdArgs);
307 // FIXME: For some reason GCC passes -lgcc and -lgcc_s before adding
308 // the default system libraries. Just mimic this for now.
310 CmdArgs.push_back("-lgcc_p");
312 CmdArgs.push_back("-lgcc");
313 if (Args.hasArg(options::OPT_static)) {
314 CmdArgs.push_back("-lgcc_eh");
315 } else if (Profiling) {
316 CmdArgs.push_back("-lgcc_eh_p");
318 CmdArgs.push_back("--as-needed");
319 CmdArgs.push_back("-lgcc_s");
320 CmdArgs.push_back("--no-as-needed");
323 if (Args.hasArg(options::OPT_pthread)) {
325 CmdArgs.push_back("-lpthread_p");
327 CmdArgs.push_back("-lpthread");
331 if (Args.hasArg(options::OPT_shared))
332 CmdArgs.push_back("-lc");
334 CmdArgs.push_back("-lc_p");
335 CmdArgs.push_back("-lgcc_p");
337 CmdArgs.push_back("-lc");
338 CmdArgs.push_back("-lgcc");
341 if (Args.hasArg(options::OPT_static)) {
342 CmdArgs.push_back("-lgcc_eh");
343 } else if (Profiling) {
344 CmdArgs.push_back("-lgcc_eh_p");
346 CmdArgs.push_back("--as-needed");
347 CmdArgs.push_back("-lgcc_s");
348 CmdArgs.push_back("--no-as-needed");
352 if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles)) {
353 if (Args.hasArg(options::OPT_shared) || IsPIE)
354 CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crtendS.o")));
356 CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crtend.o")));
357 CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crtn.o")));
360 ToolChain.addProfileRTLibs(Args, CmdArgs);
362 const char *Exec = Args.MakeArgString(getToolChain().GetLinkerPath());
363 C.addCommand(std::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));
366 /// FreeBSD - FreeBSD tool chain which can call as(1) and ld(1) directly.
368 FreeBSD::FreeBSD(const Driver &D, const llvm::Triple &Triple,
370 : Generic_ELF(D, Triple, Args) {
372 // When targeting 32-bit platforms, look for '/usr/lib32/crt1.o' and fall
373 // back to '/usr/lib' if it doesn't exist.
374 if ((Triple.getArch() == llvm::Triple::x86 || Triple.isMIPS32() ||
375 Triple.getArch() == llvm::Triple::ppc) &&
376 D.getVFS().exists(getDriver().SysRoot + "/usr/lib32/crt1.o"))
377 getFilePaths().push_back(getDriver().SysRoot + "/usr/lib32");
379 getFilePaths().push_back(getDriver().SysRoot + "/usr/lib");
382 ToolChain::CXXStdlibType FreeBSD::GetDefaultCXXStdlibType() const {
383 if (getTriple().getOSMajorVersion() >= 10)
384 return ToolChain::CST_Libcxx;
385 return ToolChain::CST_Libstdcxx;
388 unsigned FreeBSD::GetDefaultDwarfVersion() const {
389 if (getTriple().getOSMajorVersion() < 12)
394 void FreeBSD::addLibCxxIncludePaths(const llvm::opt::ArgList &DriverArgs,
395 llvm::opt::ArgStringList &CC1Args) const {
396 addSystemInclude(DriverArgs, CC1Args,
397 getDriver().SysRoot + "/usr/include/c++/v1");
400 void FreeBSD::addLibStdCxxIncludePaths(
401 const llvm::opt::ArgList &DriverArgs,
402 llvm::opt::ArgStringList &CC1Args) const {
403 addLibStdCXXIncludePaths(getDriver().SysRoot, "/usr/include/c++/4.2", "", "",
404 "", "", DriverArgs, CC1Args);
407 void FreeBSD::AddCXXStdlibLibArgs(const ArgList &Args,
408 ArgStringList &CmdArgs) const {
409 CXXStdlibType Type = GetCXXStdlibType(Args);
411 Args.hasArg(options::OPT_pg) && getTriple().getOSMajorVersion() < 14;
414 case ToolChain::CST_Libcxx:
415 CmdArgs.push_back(Profiling ? "-lc++_p" : "-lc++");
418 case ToolChain::CST_Libstdcxx:
419 CmdArgs.push_back(Profiling ? "-lstdc++_p" : "-lstdc++");
424 void FreeBSD::AddCudaIncludeArgs(const ArgList &DriverArgs,
425 ArgStringList &CC1Args) const {
426 CudaInstallation.AddCudaIncludeArgs(DriverArgs, CC1Args);
429 Tool *FreeBSD::buildAssembler() const {
430 return new tools::freebsd::Assembler(*this);
433 Tool *FreeBSD::buildLinker() const { return new tools::freebsd::Linker(*this); }
435 llvm::ExceptionHandling FreeBSD::GetExceptionModel(const ArgList &Args) const {
436 // FreeBSD uses SjLj exceptions on ARM oabi.
437 switch (getTriple().getEnvironment()) {
438 case llvm::Triple::GNUEABIHF:
439 case llvm::Triple::GNUEABI:
440 case llvm::Triple::EABI:
441 return llvm::ExceptionHandling::None;
443 if (getTriple().getArch() == llvm::Triple::arm ||
444 getTriple().getArch() == llvm::Triple::thumb)
445 return llvm::ExceptionHandling::SjLj;
446 return llvm::ExceptionHandling::None;
450 bool FreeBSD::HasNativeLLVMSupport() const { return true; }
452 bool FreeBSD::IsUnwindTablesDefault(const ArgList &Args) const { return true; }
454 bool FreeBSD::isPIEDefault() const { return getSanitizerArgs().requiresPIE(); }
456 SanitizerMask FreeBSD::getSupportedSanitizers() const {
457 const bool IsX86 = getTriple().getArch() == llvm::Triple::x86;
458 const bool IsX86_64 = getTriple().getArch() == llvm::Triple::x86_64;
459 const bool IsMIPS64 = getTriple().isMIPS64();
460 SanitizerMask Res = ToolChain::getSupportedSanitizers();
461 Res |= SanitizerKind::Address;
462 Res |= SanitizerKind::PointerCompare;
463 Res |= SanitizerKind::PointerSubtract;
464 Res |= SanitizerKind::Vptr;
465 if (IsX86_64 || IsMIPS64) {
466 Res |= SanitizerKind::Leak;
467 Res |= SanitizerKind::Thread;
469 if (IsX86 || IsX86_64) {
470 Res |= SanitizerKind::Function;
471 Res |= SanitizerKind::SafeStack;
472 Res |= SanitizerKind::Fuzzer;
473 Res |= SanitizerKind::FuzzerNoLink;
476 Res |= SanitizerKind::Memory;
480 void FreeBSD::addClangTargetOptions(const ArgList &DriverArgs,
481 ArgStringList &CC1Args,
482 Action::OffloadKind) const {
483 if (!DriverArgs.hasFlag(options::OPT_fuse_init_array,
484 options::OPT_fno_use_init_array,
485 getTriple().getOSMajorVersion() >= 12))
486 CC1Args.push_back("-fno-use-init-array");