1 //===--- FreeBSD.cpp - FreeBSD ToolChain Implementations --------*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
12 #include "Arch/Mips.h"
13 #include "Arch/Sparc.h"
14 #include "CommonArgs.h"
15 #include "clang/Basic/VirtualFileSystem.h"
16 #include "clang/Driver/Compilation.h"
17 #include "clang/Driver/Options.h"
18 #include "clang/Driver/SanitizerArgs.h"
19 #include "llvm/Option/ArgList.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;
35 // When building 32-bit code on FreeBSD/amd64, we have to explicitly
36 // instruct as in the base system to assemble 32-bit code.
37 switch (getToolChain().getArch()) {
40 case llvm::Triple::x86:
41 CmdArgs.push_back("--32");
43 case llvm::Triple::ppc:
44 CmdArgs.push_back("-a32");
46 case llvm::Triple::mips:
47 case llvm::Triple::mipsel:
48 case llvm::Triple::mips64:
49 case llvm::Triple::mips64el: {
52 mips::getMipsCPUAndABI(Args, getToolChain().getTriple(), CPUName, ABIName);
54 CmdArgs.push_back("-march");
55 CmdArgs.push_back(CPUName.data());
57 CmdArgs.push_back("-mabi");
58 CmdArgs.push_back(mips::getGnuCompatibleMipsABIName(ABIName).data());
60 if (getToolChain().getArch() == llvm::Triple::mips ||
61 getToolChain().getArch() == llvm::Triple::mips64)
62 CmdArgs.push_back("-EB");
64 CmdArgs.push_back("-EL");
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 Args.AddAllArgValues(CmdArgs, options::OPT_Wa_COMMA, options::OPT_Xassembler);
110 CmdArgs.push_back("-o");
111 CmdArgs.push_back(Output.getFilename());
113 for (const auto &II : Inputs)
114 CmdArgs.push_back(II.getFilename());
116 const char *Exec = Args.MakeArgString(getToolChain().GetProgramPath("as"));
117 C.addCommand(llvm::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));
120 void freebsd::Linker::ConstructJob(Compilation &C, const JobAction &JA,
121 const InputInfo &Output,
122 const InputInfoList &Inputs,
124 const char *LinkingOutput) const {
125 const toolchains::FreeBSD &ToolChain =
126 static_cast<const toolchains::FreeBSD &>(getToolChain());
127 const Driver &D = ToolChain.getDriver();
128 const llvm::Triple::ArchType Arch = ToolChain.getArch();
130 !Args.hasArg(options::OPT_shared) &&
131 (Args.hasArg(options::OPT_pie) || ToolChain.isPIEDefault());
132 ArgStringList CmdArgs;
134 // Silence warning for "clang -g foo.o -o foo"
135 Args.ClaimAllArgs(options::OPT_g_Group);
136 // and "clang -emit-llvm foo.o -o foo"
137 Args.ClaimAllArgs(options::OPT_emit_llvm);
138 // and for "clang -w foo.o -o foo". Other warning options are already
139 // handled somewhere else.
140 Args.ClaimAllArgs(options::OPT_w);
142 if (!D.SysRoot.empty())
143 CmdArgs.push_back(Args.MakeArgString("--sysroot=" + D.SysRoot));
146 CmdArgs.push_back("-pie");
148 CmdArgs.push_back("--eh-frame-hdr");
149 if (Args.hasArg(options::OPT_static)) {
150 CmdArgs.push_back("-Bstatic");
152 if (Args.hasArg(options::OPT_rdynamic))
153 CmdArgs.push_back("-export-dynamic");
154 if (Args.hasArg(options::OPT_shared)) {
155 CmdArgs.push_back("-Bshareable");
157 CmdArgs.push_back("-dynamic-linker");
158 CmdArgs.push_back("/libexec/ld-elf.so.1");
160 if (ToolChain.getTriple().getOSMajorVersion() >= 9) {
161 if (Arch == llvm::Triple::arm || Arch == llvm::Triple::sparc ||
162 Arch == llvm::Triple::x86 || Arch == llvm::Triple::x86_64) {
163 CmdArgs.push_back("--hash-style=both");
166 CmdArgs.push_back("--enable-new-dtags");
169 // When building 32-bit code on FreeBSD/amd64, we have to explicitly
170 // instruct ld in the base system to link 32-bit code.
171 if (Arch == llvm::Triple::x86) {
172 CmdArgs.push_back("-m");
173 CmdArgs.push_back("elf_i386_fbsd");
176 if (Arch == llvm::Triple::ppc) {
177 CmdArgs.push_back("-m");
178 CmdArgs.push_back("elf32ppc_fbsd");
181 if (Arg *A = Args.getLastArg(options::OPT_G)) {
182 if (ToolChain.getArch() == llvm::Triple::mips ||
183 ToolChain.getArch() == llvm::Triple::mipsel ||
184 ToolChain.getArch() == llvm::Triple::mips64 ||
185 ToolChain.getArch() == llvm::Triple::mips64el) {
186 StringRef v = A->getValue();
187 CmdArgs.push_back(Args.MakeArgString("-G" + v));
192 if (Output.isFilename()) {
193 CmdArgs.push_back("-o");
194 CmdArgs.push_back(Output.getFilename());
196 assert(Output.isNothing() && "Invalid output.");
199 if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles)) {
200 const char *crt1 = nullptr;
201 if (!Args.hasArg(options::OPT_shared)) {
202 if (Args.hasArg(options::OPT_pg))
210 CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath(crt1)));
212 CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crti.o")));
214 const char *crtbegin = nullptr;
215 if (Args.hasArg(options::OPT_static))
216 crtbegin = "crtbeginT.o";
217 else if (Args.hasArg(options::OPT_shared) || IsPIE)
218 crtbegin = "crtbeginS.o";
220 crtbegin = "crtbegin.o";
222 CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath(crtbegin)));
225 Args.AddAllArgs(CmdArgs, options::OPT_L);
226 ToolChain.AddFilePathLibArgs(Args, CmdArgs);
227 Args.AddAllArgs(CmdArgs, options::OPT_T_Group);
228 Args.AddAllArgs(CmdArgs, options::OPT_e);
229 Args.AddAllArgs(CmdArgs, options::OPT_s);
230 Args.AddAllArgs(CmdArgs, options::OPT_t);
231 Args.AddAllArgs(CmdArgs, options::OPT_Z_Flag);
232 Args.AddAllArgs(CmdArgs, options::OPT_r);
235 AddGoldPlugin(ToolChain, Args, CmdArgs, D.getLTOMode() == LTOK_Thin, D);
237 bool NeedsSanitizerDeps = addSanitizerRuntimes(ToolChain, Args, CmdArgs);
238 AddLinkerInputs(ToolChain, Inputs, Args, CmdArgs, JA);
240 if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs)) {
241 addOpenMPRuntime(CmdArgs, ToolChain, Args);
243 if (ToolChain.ShouldLinkCXXStdlib(Args))
244 ToolChain.AddCXXStdlibLibArgs(Args, CmdArgs);
245 if (Args.hasArg(options::OPT_pg))
246 CmdArgs.push_back("-lm_p");
248 CmdArgs.push_back("-lm");
250 if (NeedsSanitizerDeps)
251 linkSanitizerRuntimeDeps(ToolChain, CmdArgs);
252 // FIXME: For some reason GCC passes -lgcc and -lgcc_s before adding
253 // the default system libraries. Just mimic this for now.
254 if (Args.hasArg(options::OPT_pg))
255 CmdArgs.push_back("-lgcc_p");
257 CmdArgs.push_back("-lgcc");
258 if (Args.hasArg(options::OPT_static)) {
259 CmdArgs.push_back("-lgcc_eh");
260 } else if (Args.hasArg(options::OPT_pg)) {
261 CmdArgs.push_back("-lgcc_eh_p");
263 CmdArgs.push_back("--as-needed");
264 CmdArgs.push_back("-lgcc_s");
265 CmdArgs.push_back("--no-as-needed");
268 if (Args.hasArg(options::OPT_pthread)) {
269 if (Args.hasArg(options::OPT_pg))
270 CmdArgs.push_back("-lpthread_p");
272 CmdArgs.push_back("-lpthread");
275 if (Args.hasArg(options::OPT_pg)) {
276 if (Args.hasArg(options::OPT_shared))
277 CmdArgs.push_back("-lc");
279 CmdArgs.push_back("-lc_p");
280 CmdArgs.push_back("-lgcc_p");
282 CmdArgs.push_back("-lc");
283 CmdArgs.push_back("-lgcc");
286 if (Args.hasArg(options::OPT_static)) {
287 CmdArgs.push_back("-lgcc_eh");
288 } else if (Args.hasArg(options::OPT_pg)) {
289 CmdArgs.push_back("-lgcc_eh_p");
291 CmdArgs.push_back("--as-needed");
292 CmdArgs.push_back("-lgcc_s");
293 CmdArgs.push_back("--no-as-needed");
297 if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles)) {
298 if (Args.hasArg(options::OPT_shared) || IsPIE)
299 CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crtendS.o")));
301 CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crtend.o")));
302 CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crtn.o")));
305 ToolChain.addProfileRTLibs(Args, CmdArgs);
307 const char *Exec = Args.MakeArgString(getToolChain().GetLinkerPath());
308 C.addCommand(llvm::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));
311 /// FreeBSD - FreeBSD tool chain which can call as(1) and ld(1) directly.
313 FreeBSD::FreeBSD(const Driver &D, const llvm::Triple &Triple,
315 : Generic_ELF(D, Triple, Args) {
317 // When targeting 32-bit platforms, look for '/usr/lib32/crt1.o' and fall
318 // back to '/usr/lib' if it doesn't exist.
319 if ((Triple.getArch() == llvm::Triple::x86 ||
320 Triple.getArch() == llvm::Triple::ppc) &&
321 D.getVFS().exists(getDriver().SysRoot + "/usr/lib32/crt1.o"))
322 getFilePaths().push_back(getDriver().SysRoot + "/usr/lib32");
324 getFilePaths().push_back(getDriver().SysRoot + "/usr/lib");
327 ToolChain::CXXStdlibType FreeBSD::GetDefaultCXXStdlibType() const {
328 if (getTriple().getOSMajorVersion() >= 10)
329 return ToolChain::CST_Libcxx;
330 return ToolChain::CST_Libstdcxx;
333 void FreeBSD::addLibStdCxxIncludePaths(
334 const llvm::opt::ArgList &DriverArgs,
335 llvm::opt::ArgStringList &CC1Args) const {
336 addLibStdCXXIncludePaths(getDriver().SysRoot, "/usr/include/c++/4.2", "", "",
337 "", "", DriverArgs, CC1Args);
340 void FreeBSD::AddCXXStdlibLibArgs(const ArgList &Args,
341 ArgStringList &CmdArgs) const {
342 CXXStdlibType Type = GetCXXStdlibType(Args);
343 bool Profiling = Args.hasArg(options::OPT_pg);
346 case ToolChain::CST_Libcxx:
347 CmdArgs.push_back(Profiling ? "-lc++_p" : "-lc++");
350 case ToolChain::CST_Libstdcxx:
351 CmdArgs.push_back(Profiling ? "-lstdc++_p" : "-lstdc++");
356 Tool *FreeBSD::buildAssembler() const {
357 return new tools::freebsd::Assembler(*this);
360 Tool *FreeBSD::buildLinker() const { return new tools::freebsd::Linker(*this); }
362 llvm::ExceptionHandling FreeBSD::GetExceptionModel(const ArgList &Args) const {
363 // FreeBSD uses SjLj exceptions on ARM oabi.
364 switch (getTriple().getEnvironment()) {
365 case llvm::Triple::GNUEABIHF:
366 case llvm::Triple::GNUEABI:
367 case llvm::Triple::EABI:
368 return llvm::ExceptionHandling::None;
370 if (getTriple().getArch() == llvm::Triple::arm ||
371 getTriple().getArch() == llvm::Triple::thumb)
372 return llvm::ExceptionHandling::SjLj;
373 return llvm::ExceptionHandling::None;
377 bool FreeBSD::HasNativeLLVMSupport() const { return true; }
379 bool FreeBSD::isPIEDefault() const { return getSanitizerArgs().requiresPIE(); }
381 SanitizerMask FreeBSD::getSupportedSanitizers() const {
382 const bool IsX86 = getTriple().getArch() == llvm::Triple::x86;
383 const bool IsX86_64 = getTriple().getArch() == llvm::Triple::x86_64;
384 const bool IsMIPS64 = getTriple().getArch() == llvm::Triple::mips64 ||
385 getTriple().getArch() == llvm::Triple::mips64el;
386 SanitizerMask Res = ToolChain::getSupportedSanitizers();
387 Res |= SanitizerKind::Address;
388 Res |= SanitizerKind::Vptr;
389 if (IsX86_64 || IsMIPS64) {
390 Res |= SanitizerKind::Leak;
391 Res |= SanitizerKind::Thread;
393 if (IsX86 || IsX86_64) {
394 Res |= SanitizerKind::SafeStack;