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/Options.h"
16 #include "clang/Driver/SanitizerArgs.h"
17 #include "llvm/Option/ArgList.h"
18 #include "llvm/Support/VirtualFileSystem.h"
20 using namespace clang::driver;
21 using namespace clang::driver::tools;
22 using namespace clang::driver::toolchains;
23 using namespace clang;
24 using namespace llvm::opt;
26 void freebsd::Assembler::ConstructJob(Compilation &C, const JobAction &JA,
27 const InputInfo &Output,
28 const InputInfoList &Inputs,
30 const char *LinkingOutput) const {
31 claimNoWarnArgs(Args);
32 ArgStringList CmdArgs;
34 // When building 32-bit code on FreeBSD/amd64, we have to explicitly
35 // instruct as in the base system to assemble 32-bit code.
36 switch (getToolChain().getArch()) {
39 case llvm::Triple::x86:
40 CmdArgs.push_back("--32");
42 case llvm::Triple::ppc:
43 CmdArgs.push_back("-a32");
45 case llvm::Triple::mips:
46 case llvm::Triple::mipsel:
47 case llvm::Triple::mips64:
48 case llvm::Triple::mips64el: {
51 mips::getMipsCPUAndABI(Args, getToolChain().getTriple(), CPUName, ABIName);
53 CmdArgs.push_back("-march");
54 CmdArgs.push_back(CPUName.data());
56 CmdArgs.push_back("-mabi");
57 CmdArgs.push_back(mips::getGnuCompatibleMipsABIName(ABIName).data());
59 if (getToolChain().getTriple().isLittleEndian())
60 CmdArgs.push_back("-EL");
62 CmdArgs.push_back("-EB");
64 if (Arg *A = Args.getLastArg(options::OPT_G)) {
65 StringRef v = A->getValue();
66 CmdArgs.push_back(Args.MakeArgString("-G" + v));
70 AddAssemblerKPIC(getToolChain(), Args, CmdArgs);
73 case llvm::Triple::arm:
74 case llvm::Triple::armeb:
75 case llvm::Triple::thumb:
76 case llvm::Triple::thumbeb: {
77 arm::FloatABI ABI = arm::getARMFloatABI(getToolChain(), Args);
79 if (ABI == arm::FloatABI::Hard)
80 CmdArgs.push_back("-mfpu=vfp");
82 CmdArgs.push_back("-mfpu=softvfp");
84 switch (getToolChain().getTriple().getEnvironment()) {
85 case llvm::Triple::GNUEABIHF:
86 case llvm::Triple::GNUEABI:
87 case llvm::Triple::EABI:
88 CmdArgs.push_back("-meabi=5");
92 CmdArgs.push_back("-matpcs");
96 case llvm::Triple::sparc:
97 case llvm::Triple::sparcel:
98 case llvm::Triple::sparcv9: {
99 std::string CPU = getCPUName(Args, getToolChain().getTriple());
100 CmdArgs.push_back(sparc::getSparcAsmModeForCPU(CPU, getToolChain().getTriple()));
101 AddAssemblerKPIC(getToolChain(), Args, CmdArgs);
106 Args.AddAllArgValues(CmdArgs, options::OPT_Wa_COMMA, options::OPT_Xassembler);
108 CmdArgs.push_back("-o");
109 CmdArgs.push_back(Output.getFilename());
111 for (const auto &II : Inputs)
112 CmdArgs.push_back(II.getFilename());
114 const char *Exec = Args.MakeArgString(getToolChain().GetProgramPath("as"));
115 C.addCommand(std::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));
118 void freebsd::Linker::ConstructJob(Compilation &C, const JobAction &JA,
119 const InputInfo &Output,
120 const InputInfoList &Inputs,
122 const char *LinkingOutput) const {
123 const toolchains::FreeBSD &ToolChain =
124 static_cast<const toolchains::FreeBSD &>(getToolChain());
125 const Driver &D = ToolChain.getDriver();
126 const llvm::Triple::ArchType Arch = ToolChain.getArch();
128 !Args.hasArg(options::OPT_shared) &&
129 (Args.hasArg(options::OPT_pie) || ToolChain.isPIEDefault());
130 ArgStringList CmdArgs;
132 // Silence warning for "clang -g foo.o -o foo"
133 Args.ClaimAllArgs(options::OPT_g_Group);
134 // and "clang -emit-llvm foo.o -o foo"
135 Args.ClaimAllArgs(options::OPT_emit_llvm);
136 // and for "clang -w foo.o -o foo". Other warning options are already
137 // handled somewhere else.
138 Args.ClaimAllArgs(options::OPT_w);
140 if (!D.SysRoot.empty())
141 CmdArgs.push_back(Args.MakeArgString("--sysroot=" + D.SysRoot));
144 CmdArgs.push_back("-pie");
146 CmdArgs.push_back("--eh-frame-hdr");
147 if (Args.hasArg(options::OPT_static)) {
148 CmdArgs.push_back("-Bstatic");
150 if (Args.hasArg(options::OPT_rdynamic))
151 CmdArgs.push_back("-export-dynamic");
152 if (Args.hasArg(options::OPT_shared)) {
153 CmdArgs.push_back("-Bshareable");
155 CmdArgs.push_back("-dynamic-linker");
156 CmdArgs.push_back("/libexec/ld-elf.so.1");
158 if (ToolChain.getTriple().getOSMajorVersion() >= 9) {
159 if (Arch == llvm::Triple::arm || Arch == llvm::Triple::sparc ||
160 Arch == llvm::Triple::x86 || Arch == llvm::Triple::x86_64) {
161 CmdArgs.push_back("--hash-style=both");
164 CmdArgs.push_back("--enable-new-dtags");
167 // Explicitly set the linker emulation for platforms that might not
168 // be the default emulation for the linker.
170 case llvm::Triple::x86:
171 CmdArgs.push_back("-m");
172 CmdArgs.push_back("elf_i386_fbsd");
174 case llvm::Triple::ppc:
175 CmdArgs.push_back("-m");
176 CmdArgs.push_back("elf32ppc_fbsd");
178 case llvm::Triple::mips:
179 CmdArgs.push_back("-m");
180 CmdArgs.push_back("elf32btsmip_fbsd");
182 case llvm::Triple::mipsel:
183 CmdArgs.push_back("-m");
184 CmdArgs.push_back("elf32ltsmip_fbsd");
186 case llvm::Triple::mips64:
187 CmdArgs.push_back("-m");
188 if (tools::mips::hasMipsAbiArg(Args, "n32"))
189 CmdArgs.push_back("elf32btsmipn32_fbsd");
191 CmdArgs.push_back("elf64btsmip_fbsd");
193 case llvm::Triple::mips64el:
194 CmdArgs.push_back("-m");
195 if (tools::mips::hasMipsAbiArg(Args, "n32"))
196 CmdArgs.push_back("elf32ltsmipn32_fbsd");
198 CmdArgs.push_back("elf64ltsmip_fbsd");
200 case llvm::Triple::riscv32:
201 CmdArgs.push_back("-m");
202 CmdArgs.push_back("elf32lriscv");
204 case llvm::Triple::riscv64:
205 CmdArgs.push_back("-m");
206 CmdArgs.push_back("elf64lriscv");
212 if (Arg *A = Args.getLastArg(options::OPT_G)) {
213 if (ToolChain.getTriple().isMIPS()) {
214 StringRef v = A->getValue();
215 CmdArgs.push_back(Args.MakeArgString("-G" + v));
220 if (Output.isFilename()) {
221 CmdArgs.push_back("-o");
222 CmdArgs.push_back(Output.getFilename());
224 assert(Output.isNothing() && "Invalid output.");
227 if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles)) {
228 const char *crt1 = nullptr;
229 if (!Args.hasArg(options::OPT_shared)) {
230 if (Args.hasArg(options::OPT_pg))
238 CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath(crt1)));
240 CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crti.o")));
242 const char *crtbegin = nullptr;
243 if (Args.hasArg(options::OPT_static))
244 crtbegin = "crtbeginT.o";
245 else if (Args.hasArg(options::OPT_shared) || IsPIE)
246 crtbegin = "crtbeginS.o";
248 crtbegin = "crtbegin.o";
250 CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath(crtbegin)));
253 Args.AddAllArgs(CmdArgs, options::OPT_L);
254 ToolChain.AddFilePathLibArgs(Args, CmdArgs);
255 Args.AddAllArgs(CmdArgs, options::OPT_T_Group);
256 Args.AddAllArgs(CmdArgs, options::OPT_e);
257 Args.AddAllArgs(CmdArgs, options::OPT_s);
258 Args.AddAllArgs(CmdArgs, options::OPT_t);
259 Args.AddAllArgs(CmdArgs, options::OPT_Z_Flag);
260 Args.AddAllArgs(CmdArgs, options::OPT_r);
262 if (D.isUsingLTO()) {
263 assert(!Inputs.empty() && "Must have at least one input.");
264 AddGoldPlugin(ToolChain, Args, CmdArgs, Output, Inputs[0],
265 D.getLTOMode() == LTOK_Thin);
268 bool NeedsSanitizerDeps = addSanitizerRuntimes(ToolChain, Args, CmdArgs);
269 bool NeedsXRayDeps = addXRayRuntime(ToolChain, Args, CmdArgs);
270 AddLinkerInputs(ToolChain, Inputs, Args, CmdArgs, JA);
272 if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs)) {
273 // Use the static OpenMP runtime with -static-openmp
274 bool StaticOpenMP = Args.hasArg(options::OPT_static_openmp) &&
275 !Args.hasArg(options::OPT_static);
276 addOpenMPRuntime(CmdArgs, ToolChain, Args, StaticOpenMP);
279 if (ToolChain.ShouldLinkCXXStdlib(Args))
280 ToolChain.AddCXXStdlibLibArgs(Args, CmdArgs);
281 if (Args.hasArg(options::OPT_pg))
282 CmdArgs.push_back("-lm_p");
284 CmdArgs.push_back("-lm");
286 if (NeedsSanitizerDeps)
287 linkSanitizerRuntimeDeps(ToolChain, CmdArgs);
289 linkXRayRuntimeDeps(ToolChain, CmdArgs);
290 // FIXME: For some reason GCC passes -lgcc and -lgcc_s before adding
291 // the default system libraries. Just mimic this for now.
292 if (Args.hasArg(options::OPT_pg))
293 CmdArgs.push_back("-lgcc_p");
295 CmdArgs.push_back("-lgcc");
296 if (Args.hasArg(options::OPT_static)) {
297 CmdArgs.push_back("-lgcc_eh");
298 } else if (Args.hasArg(options::OPT_pg)) {
299 CmdArgs.push_back("-lgcc_eh_p");
301 CmdArgs.push_back("--as-needed");
302 CmdArgs.push_back("-lgcc_s");
303 CmdArgs.push_back("--no-as-needed");
306 if (Args.hasArg(options::OPT_pthread)) {
307 if (Args.hasArg(options::OPT_pg))
308 CmdArgs.push_back("-lpthread_p");
310 CmdArgs.push_back("-lpthread");
313 if (Args.hasArg(options::OPT_pg)) {
314 if (Args.hasArg(options::OPT_shared))
315 CmdArgs.push_back("-lc");
317 CmdArgs.push_back("-lc_p");
318 CmdArgs.push_back("-lgcc_p");
320 CmdArgs.push_back("-lc");
321 CmdArgs.push_back("-lgcc");
324 if (Args.hasArg(options::OPT_static)) {
325 CmdArgs.push_back("-lgcc_eh");
326 } else if (Args.hasArg(options::OPT_pg)) {
327 CmdArgs.push_back("-lgcc_eh_p");
329 CmdArgs.push_back("--as-needed");
330 CmdArgs.push_back("-lgcc_s");
331 CmdArgs.push_back("--no-as-needed");
335 if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles)) {
336 if (Args.hasArg(options::OPT_shared) || IsPIE)
337 CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crtendS.o")));
339 CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crtend.o")));
340 CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crtn.o")));
343 ToolChain.addProfileRTLibs(Args, CmdArgs);
345 const char *Exec = Args.MakeArgString(getToolChain().GetLinkerPath());
346 C.addCommand(std::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));
349 /// FreeBSD - FreeBSD tool chain which can call as(1) and ld(1) directly.
351 FreeBSD::FreeBSD(const Driver &D, const llvm::Triple &Triple,
353 : Generic_ELF(D, Triple, Args) {
355 // When targeting 32-bit platforms, look for '/usr/lib32/crt1.o' and fall
356 // back to '/usr/lib' if it doesn't exist.
357 if ((Triple.getArch() == llvm::Triple::x86 || Triple.isMIPS32() ||
358 Triple.getArch() == llvm::Triple::ppc) &&
359 D.getVFS().exists(getDriver().SysRoot + "/usr/lib32/crt1.o"))
360 getFilePaths().push_back(getDriver().SysRoot + "/usr/lib32");
362 getFilePaths().push_back(getDriver().SysRoot + "/usr/lib");
365 ToolChain::CXXStdlibType FreeBSD::GetDefaultCXXStdlibType() const {
366 if (getTriple().getOSMajorVersion() >= 10)
367 return ToolChain::CST_Libcxx;
368 return ToolChain::CST_Libstdcxx;
371 unsigned FreeBSD::GetDefaultDwarfVersion() const {
372 if (getTriple().getOSMajorVersion() < 12)
377 void FreeBSD::addLibStdCxxIncludePaths(
378 const llvm::opt::ArgList &DriverArgs,
379 llvm::opt::ArgStringList &CC1Args) const {
380 addLibStdCXXIncludePaths(getDriver().SysRoot, "/usr/include/c++/4.2", "", "",
381 "", "", DriverArgs, CC1Args);
384 void FreeBSD::AddCXXStdlibLibArgs(const ArgList &Args,
385 ArgStringList &CmdArgs) const {
386 CXXStdlibType Type = GetCXXStdlibType(Args);
387 bool Profiling = Args.hasArg(options::OPT_pg);
390 case ToolChain::CST_Libcxx:
391 CmdArgs.push_back(Profiling ? "-lc++_p" : "-lc++");
394 case ToolChain::CST_Libstdcxx:
395 CmdArgs.push_back(Profiling ? "-lstdc++_p" : "-lstdc++");
400 Tool *FreeBSD::buildAssembler() const {
401 return new tools::freebsd::Assembler(*this);
404 Tool *FreeBSD::buildLinker() const { return new tools::freebsd::Linker(*this); }
406 llvm::ExceptionHandling FreeBSD::GetExceptionModel(const ArgList &Args) const {
407 // FreeBSD uses SjLj exceptions on ARM oabi.
408 switch (getTriple().getEnvironment()) {
409 case llvm::Triple::GNUEABIHF:
410 case llvm::Triple::GNUEABI:
411 case llvm::Triple::EABI:
412 return llvm::ExceptionHandling::None;
414 if (getTriple().getArch() == llvm::Triple::arm ||
415 getTriple().getArch() == llvm::Triple::thumb)
416 return llvm::ExceptionHandling::SjLj;
417 return llvm::ExceptionHandling::None;
421 bool FreeBSD::HasNativeLLVMSupport() const { return true; }
423 bool FreeBSD::isPIEDefault() const { return getSanitizerArgs().requiresPIE(); }
425 SanitizerMask FreeBSD::getSupportedSanitizers() const {
426 const bool IsX86 = getTriple().getArch() == llvm::Triple::x86;
427 const bool IsX86_64 = getTriple().getArch() == llvm::Triple::x86_64;
428 const bool IsMIPS64 = getTriple().isMIPS64();
429 SanitizerMask Res = ToolChain::getSupportedSanitizers();
430 Res |= SanitizerKind::Address;
431 Res |= SanitizerKind::PointerCompare;
432 Res |= SanitizerKind::PointerSubtract;
433 Res |= SanitizerKind::Vptr;
434 if (IsX86_64 || IsMIPS64) {
435 Res |= SanitizerKind::Leak;
436 Res |= SanitizerKind::Thread;
438 if (IsX86 || IsX86_64) {
439 Res |= SanitizerKind::Function;
440 Res |= SanitizerKind::SafeStack;
441 Res |= SanitizerKind::Fuzzer;
442 Res |= SanitizerKind::FuzzerNoLink;
445 Res |= SanitizerKind::Memory;