1 //===--- OpenBSD.cpp - OpenBSD 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 //===----------------------------------------------------------------------===//
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"
19 using namespace clang::driver;
20 using namespace clang::driver::tools;
21 using namespace clang::driver::toolchains;
22 using namespace clang;
23 using namespace llvm::opt;
25 void openbsd::Assembler::ConstructJob(Compilation &C, const JobAction &JA,
26 const InputInfo &Output,
27 const InputInfoList &Inputs,
29 const char *LinkingOutput) const {
30 claimNoWarnArgs(Args);
31 ArgStringList CmdArgs;
33 switch (getToolChain().getArch()) {
34 case llvm::Triple::x86:
35 // When building 32-bit code on OpenBSD/amd64, we have to explicitly
36 // instruct as in the base system to assemble 32-bit code.
37 CmdArgs.push_back("--32");
40 case llvm::Triple::ppc:
41 CmdArgs.push_back("-mppc");
42 CmdArgs.push_back("-many");
45 case llvm::Triple::sparc:
46 case llvm::Triple::sparcel: {
47 CmdArgs.push_back("-32");
48 std::string CPU = getCPUName(Args, getToolChain().getTriple());
49 CmdArgs.push_back(sparc::getSparcAsmModeForCPU(CPU, getToolChain().getTriple()));
50 AddAssemblerKPIC(getToolChain(), Args, CmdArgs);
54 case llvm::Triple::sparcv9: {
55 CmdArgs.push_back("-64");
56 std::string CPU = getCPUName(Args, getToolChain().getTriple());
57 CmdArgs.push_back(sparc::getSparcAsmModeForCPU(CPU, getToolChain().getTriple()));
58 AddAssemblerKPIC(getToolChain(), Args, CmdArgs);
62 case llvm::Triple::mips64:
63 case llvm::Triple::mips64el: {
66 mips::getMipsCPUAndABI(Args, getToolChain().getTriple(), CPUName, ABIName);
68 CmdArgs.push_back("-mabi");
69 CmdArgs.push_back(mips::getGnuCompatibleMipsABIName(ABIName).data());
71 if (getToolChain().getTriple().isLittleEndian())
72 CmdArgs.push_back("-EL");
74 CmdArgs.push_back("-EB");
76 AddAssemblerKPIC(getToolChain(), Args, CmdArgs);
84 Args.AddAllArgValues(CmdArgs, options::OPT_Wa_COMMA, options::OPT_Xassembler);
86 CmdArgs.push_back("-o");
87 CmdArgs.push_back(Output.getFilename());
89 for (const auto &II : Inputs)
90 CmdArgs.push_back(II.getFilename());
92 const char *Exec = Args.MakeArgString(getToolChain().GetProgramPath("as"));
93 C.addCommand(llvm::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));
96 void openbsd::Linker::ConstructJob(Compilation &C, const JobAction &JA,
97 const InputInfo &Output,
98 const InputInfoList &Inputs,
100 const char *LinkingOutput) const {
101 const toolchains::OpenBSD &ToolChain =
102 static_cast<const toolchains::OpenBSD &>(getToolChain());
103 const Driver &D = getToolChain().getDriver();
104 ArgStringList CmdArgs;
106 // Silence warning for "clang -g foo.o -o foo"
107 Args.ClaimAllArgs(options::OPT_g_Group);
108 // and "clang -emit-llvm foo.o -o foo"
109 Args.ClaimAllArgs(options::OPT_emit_llvm);
110 // and for "clang -w foo.o -o foo". Other warning options are already
111 // handled somewhere else.
112 Args.ClaimAllArgs(options::OPT_w);
114 if (getToolChain().getArch() == llvm::Triple::mips64)
115 CmdArgs.push_back("-EB");
116 else if (getToolChain().getArch() == llvm::Triple::mips64el)
117 CmdArgs.push_back("-EL");
119 if (!Args.hasArg(options::OPT_nostdlib, options::OPT_shared)) {
120 CmdArgs.push_back("-e");
121 CmdArgs.push_back("__start");
124 CmdArgs.push_back("--eh-frame-hdr");
125 if (Args.hasArg(options::OPT_static)) {
126 CmdArgs.push_back("-Bstatic");
128 if (Args.hasArg(options::OPT_rdynamic))
129 CmdArgs.push_back("-export-dynamic");
130 CmdArgs.push_back("-Bdynamic");
131 if (Args.hasArg(options::OPT_shared)) {
132 CmdArgs.push_back("-shared");
134 CmdArgs.push_back("-dynamic-linker");
135 CmdArgs.push_back("/usr/libexec/ld.so");
139 if (Args.hasArg(options::OPT_pie))
140 CmdArgs.push_back("-pie");
141 if (Args.hasArg(options::OPT_nopie) || Args.hasArg(options::OPT_pg))
142 CmdArgs.push_back("-nopie");
144 if (Output.isFilename()) {
145 CmdArgs.push_back("-o");
146 CmdArgs.push_back(Output.getFilename());
148 assert(Output.isNothing() && "Invalid output.");
151 if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles)) {
152 if (!Args.hasArg(options::OPT_shared)) {
153 if (Args.hasArg(options::OPT_pg))
155 Args.MakeArgString(getToolChain().GetFilePath("gcrt0.o")));
156 else if (Args.hasArg(options::OPT_static) &&
157 !Args.hasArg(options::OPT_nopie))
159 Args.MakeArgString(getToolChain().GetFilePath("rcrt0.o")));
162 Args.MakeArgString(getToolChain().GetFilePath("crt0.o")));
164 Args.MakeArgString(getToolChain().GetFilePath("crtbegin.o")));
167 Args.MakeArgString(getToolChain().GetFilePath("crtbeginS.o")));
171 std::string Triple = getToolChain().getTripleString();
172 if (Triple.substr(0, 6) == "x86_64")
173 Triple.replace(0, 6, "amd64");
175 Args.MakeArgString("-L/usr/lib/gcc-lib/" + Triple + "/4.2.1"));
176 CmdArgs.push_back(Args.MakeArgString("-L/usr/lib"));
178 Args.AddAllArgs(CmdArgs, {options::OPT_L, options::OPT_T_Group,
179 options::OPT_e, options::OPT_s, options::OPT_t,
180 options::OPT_Z_Flag, options::OPT_r});
182 bool NeedsSanitizerDeps = addSanitizerRuntimes(ToolChain, Args, CmdArgs);
183 bool NeedsXRayDeps = addXRayRuntime(ToolChain, Args, CmdArgs);
184 AddLinkerInputs(getToolChain(), Inputs, Args, CmdArgs, JA);
186 if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs)) {
188 if (getToolChain().ShouldLinkCXXStdlib(Args))
189 getToolChain().AddCXXStdlibLibArgs(Args, CmdArgs);
190 if (Args.hasArg(options::OPT_pg))
191 CmdArgs.push_back("-lm_p");
193 CmdArgs.push_back("-lm");
195 if (NeedsSanitizerDeps) {
196 CmdArgs.push_back(ToolChain.getCompilerRTArgString(Args, "builtins", false));
197 linkSanitizerRuntimeDeps(ToolChain, CmdArgs);
200 CmdArgs.push_back(ToolChain.getCompilerRTArgString(Args, "builtins", false));
201 linkXRayRuntimeDeps(ToolChain, CmdArgs);
203 // FIXME: For some reason GCC passes -lgcc before adding
204 // the default system libraries. Just mimic this for now.
205 CmdArgs.push_back("-lgcc");
207 if (Args.hasArg(options::OPT_pthread)) {
208 if (!Args.hasArg(options::OPT_shared) && Args.hasArg(options::OPT_pg))
209 CmdArgs.push_back("-lpthread_p");
211 CmdArgs.push_back("-lpthread");
214 if (!Args.hasArg(options::OPT_shared)) {
215 if (Args.hasArg(options::OPT_pg))
216 CmdArgs.push_back("-lc_p");
218 CmdArgs.push_back("-lc");
221 CmdArgs.push_back("-lgcc");
224 if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles)) {
225 if (!Args.hasArg(options::OPT_shared))
227 Args.MakeArgString(getToolChain().GetFilePath("crtend.o")));
230 Args.MakeArgString(getToolChain().GetFilePath("crtendS.o")));
233 const char *Exec = Args.MakeArgString(
234 !NeedsSanitizerDeps ? getToolChain().GetLinkerPath()
235 : getToolChain().GetProgramPath("ld.lld"));
236 C.addCommand(llvm::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));
239 SanitizerMask OpenBSD::getSupportedSanitizers() const {
240 const bool IsX86 = getTriple().getArch() == llvm::Triple::x86;
241 const bool IsX86_64 = getTriple().getArch() == llvm::Triple::x86_64;
243 // For future use, only UBsan at the moment
244 SanitizerMask Res = ToolChain::getSupportedSanitizers();
246 if (IsX86 || IsX86_64) {
247 Res |= SanitizerKind::Vptr;
248 Res |= SanitizerKind::Fuzzer;
249 Res |= SanitizerKind::FuzzerNoLink;
255 /// OpenBSD - OpenBSD tool chain which can call as(1) and ld(1) directly.
257 OpenBSD::OpenBSD(const Driver &D, const llvm::Triple &Triple,
259 : Generic_ELF(D, Triple, Args) {
260 getFilePaths().push_back(getDriver().Dir + "/../lib");
261 getFilePaths().push_back("/usr/lib");
264 void OpenBSD::AddCXXStdlibLibArgs(const ArgList &Args,
265 ArgStringList &CmdArgs) const {
266 bool Profiling = Args.hasArg(options::OPT_pg);
268 CmdArgs.push_back(Profiling ? "-lc++_p" : "-lc++");
269 CmdArgs.push_back(Profiling ? "-lc++abi_p" : "-lc++abi");
272 Tool *OpenBSD::buildAssembler() const {
273 return new tools::openbsd::Assembler(*this);
276 Tool *OpenBSD::buildLinker() const { return new tools::openbsd::Linker(*this); }