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David L. Jonesf561aba2017-03-08 01:02:16 +00001//===--- Fuchsia.cpp - Fuchsia ToolChain Implementations --------*- C++ -*-===//
2//
3// The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9
10#include "Fuchsia.h"
11#include "CommonArgs.h"
12#include "clang/Config/config.h"
13#include "clang/Driver/Compilation.h"
14#include "clang/Driver/Driver.h"
15#include "clang/Driver/DriverDiagnostic.h"
16#include "clang/Driver/Options.h"
Petr Hosekb31582b2017-08-03 23:02:22 +000017#include "clang/Driver/SanitizerArgs.h"
David L. Jonesf561aba2017-03-08 01:02:16 +000018#include "llvm/Option/ArgList.h"
19#include "llvm/Support/Path.h"
20
21using namespace clang::driver;
22using namespace clang::driver::toolchains;
23using namespace clang::driver::tools;
24using namespace clang;
25using namespace llvm::opt;
26
27void fuchsia::Linker::ConstructJob(Compilation &C, const JobAction &JA,
28 const InputInfo &Output,
29 const InputInfoList &Inputs,
30 const ArgList &Args,
31 const char *LinkingOutput) const {
32 const toolchains::Fuchsia &ToolChain =
33 static_cast<const toolchains::Fuchsia &>(getToolChain());
34 const Driver &D = ToolChain.getDriver();
35
36 ArgStringList CmdArgs;
37
38 // Silence warning for "clang -g foo.o -o foo"
39 Args.ClaimAllArgs(options::OPT_g_Group);
40 // and "clang -emit-llvm foo.o -o foo"
41 Args.ClaimAllArgs(options::OPT_emit_llvm);
42 // and for "clang -w foo.o -o foo". Other warning options are already
43 // handled somewhere else.
44 Args.ClaimAllArgs(options::OPT_w);
45
46 const char *Exec = Args.MakeArgString(ToolChain.GetLinkerPath());
Petr Hosek3e199ec2017-10-23 21:31:05 +000047 if (llvm::sys::path::filename(Exec).equals_lower("ld.lld") ||
48 llvm::sys::path::stem(Exec).equals_lower("ld.lld")) {
Petr Hosekdcf3d492017-07-18 23:23:16 +000049 CmdArgs.push_back("-z");
50 CmdArgs.push_back("rodynamic");
David L. Jonesf561aba2017-03-08 01:02:16 +000051 }
52
53 if (!D.SysRoot.empty())
54 CmdArgs.push_back(Args.MakeArgString("--sysroot=" + D.SysRoot));
55
56 if (!Args.hasArg(options::OPT_shared) && !Args.hasArg(options::OPT_r))
57 CmdArgs.push_back("-pie");
58
59 if (Args.hasArg(options::OPT_rdynamic))
60 CmdArgs.push_back("-export-dynamic");
61
62 if (Args.hasArg(options::OPT_s))
63 CmdArgs.push_back("-s");
64
Petr Hosek83214df2017-08-04 02:39:27 +000065 if (Args.hasArg(options::OPT_r)) {
David L. Jonesf561aba2017-03-08 01:02:16 +000066 CmdArgs.push_back("-r");
Petr Hosek83214df2017-08-04 02:39:27 +000067 } else {
David L. Jonesf561aba2017-03-08 01:02:16 +000068 CmdArgs.push_back("--build-id");
Petr Hosek83214df2017-08-04 02:39:27 +000069 CmdArgs.push_back("--hash-style=gnu");
70 }
David L. Jonesf561aba2017-03-08 01:02:16 +000071
Petr Hosekb31582b2017-08-03 23:02:22 +000072 CmdArgs.push_back("--eh-frame-hdr");
David L. Jonesf561aba2017-03-08 01:02:16 +000073
74 if (Args.hasArg(options::OPT_static))
75 CmdArgs.push_back("-Bstatic");
76 else if (Args.hasArg(options::OPT_shared))
77 CmdArgs.push_back("-shared");
78
Petr Hosekb31582b2017-08-03 23:02:22 +000079 if (!Args.hasArg(options::OPT_shared)) {
80 std::string Dyld = D.DyldPrefix;
81 if (ToolChain.getSanitizerArgs().needsAsanRt() &&
Evgeniy Stepanov0876cfb2017-10-05 20:14:00 +000082 ToolChain.getSanitizerArgs().needsSharedRt())
Petr Hosekb31582b2017-08-03 23:02:22 +000083 Dyld += "asan/";
84 Dyld += "ld.so.1";
85 CmdArgs.push_back("-dynamic-linker");
86 CmdArgs.push_back(Args.MakeArgString(Dyld));
David L. Jonesf561aba2017-03-08 01:02:16 +000087 }
88
89 CmdArgs.push_back("-o");
90 CmdArgs.push_back(Output.getFilename());
91
92 if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles)) {
93 if (!Args.hasArg(options::OPT_shared)) {
94 CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("Scrt1.o")));
95 }
96 }
97
98 Args.AddAllArgs(CmdArgs, options::OPT_L);
99 Args.AddAllArgs(CmdArgs, options::OPT_u);
100
101 ToolChain.AddFilePathLibArgs(Args, CmdArgs);
102
Petr Hosek03eece72018-06-05 01:50:59 +0000103 if (D.isUsingLTO()) {
104 assert(!Inputs.empty() && "Must have at least one input.");
105 AddGoldPlugin(ToolChain, Args, CmdArgs, Output, Inputs[0],
106 D.getLTOMode() == LTOK_Thin);
107 }
108
Petr Hosekb31582b2017-08-03 23:02:22 +0000109 addSanitizerRuntimes(ToolChain, Args, CmdArgs);
110
David L. Jonesf561aba2017-03-08 01:02:16 +0000111 AddLinkerInputs(ToolChain, Inputs, Args, CmdArgs, JA);
112
113 if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs)) {
114 if (Args.hasArg(options::OPT_static))
115 CmdArgs.push_back("-Bdynamic");
116
117 if (D.CCCIsCXX()) {
Petr Hosek96917d72018-06-23 03:15:07 +0000118 if (ToolChain.ShouldLinkCXXStdlib(Args)) {
119 bool OnlyLibstdcxxStatic = Args.hasArg(options::OPT_static_libstdcxx) &&
120 !Args.hasArg(options::OPT_static);
121 if (OnlyLibstdcxxStatic)
122 CmdArgs.push_back("-Bstatic");
Nico Weber0ee47d92017-07-25 18:02:57 +0000123 ToolChain.AddCXXStdlibLibArgs(Args, CmdArgs);
Petr Hosek96917d72018-06-23 03:15:07 +0000124 if (OnlyLibstdcxxStatic)
125 CmdArgs.push_back("-Bdynamic");
126 }
David L. Jonesf561aba2017-03-08 01:02:16 +0000127 CmdArgs.push_back("-lm");
128 }
129
130 AddRunTimeLibs(ToolChain, D, CmdArgs, Args);
131
132 if (Args.hasArg(options::OPT_pthread) ||
133 Args.hasArg(options::OPT_pthreads))
134 CmdArgs.push_back("-lpthread");
135
136 if (Args.hasArg(options::OPT_fsplit_stack))
137 CmdArgs.push_back("--wrap=pthread_create");
138
139 CmdArgs.push_back("-lc");
140 }
141
142 C.addCommand(llvm::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));
143}
144
145/// Fuchsia - Fuchsia tool chain which can call as(1) and ld(1) directly.
146
Petr Hosekcc248512017-07-12 22:14:41 +0000147Fuchsia::Fuchsia(const Driver &D, const llvm::Triple &Triple,
148 const ArgList &Args)
149 : ToolChain(D, Triple, Args) {
150 getProgramPaths().push_back(getDriver().getInstalledDir());
151 if (getDriver().getInstalledDir() != D.Dir)
152 getProgramPaths().push_back(D.Dir);
153
Petr Hosekcc248512017-07-12 22:14:41 +0000154 if (!D.SysRoot.empty()) {
155 SmallString<128> P(D.SysRoot);
156 llvm::sys::path::append(P, "lib");
157 getFilePaths().push_back(P.str());
158 }
159}
160
161std::string Fuchsia::ComputeEffectiveClangTriple(const ArgList &Args,
162 types::ID InputType) const {
163 llvm::Triple Triple(ComputeLLVMTriple(Args, InputType));
Petr Hosek887f26d2018-06-28 03:11:52 +0000164 return (Triple.getArchName() + "-" + Triple.getOSName()).str();
David L. Jonesf561aba2017-03-08 01:02:16 +0000165}
166
167Tool *Fuchsia::buildLinker() const {
168 return new tools::fuchsia::Linker(*this);
169}
170
171ToolChain::RuntimeLibType Fuchsia::GetRuntimeLibType(
172 const ArgList &Args) const {
173 if (Arg *A = Args.getLastArg(clang::driver::options::OPT_rtlib_EQ)) {
174 StringRef Value = A->getValue();
175 if (Value != "compiler-rt")
176 getDriver().Diag(clang::diag::err_drv_invalid_rtlib_name)
177 << A->getAsString(Args);
178 }
179
180 return ToolChain::RLT_CompilerRT;
181}
182
183ToolChain::CXXStdlibType
184Fuchsia::GetCXXStdlibType(const ArgList &Args) const {
185 if (Arg *A = Args.getLastArg(options::OPT_stdlib_EQ)) {
186 StringRef Value = A->getValue();
187 if (Value != "libc++")
188 getDriver().Diag(diag::err_drv_invalid_stdlib_name)
189 << A->getAsString(Args);
190 }
191
192 return ToolChain::CST_Libcxx;
193}
194
195void Fuchsia::addClangTargetOptions(const ArgList &DriverArgs,
Gheorghe-Teodor Berceaf0f29602017-07-06 16:22:21 +0000196 ArgStringList &CC1Args,
197 Action::OffloadKind) const {
David L. Jonesf561aba2017-03-08 01:02:16 +0000198 if (DriverArgs.hasFlag(options::OPT_fuse_init_array,
199 options::OPT_fno_use_init_array, true))
200 CC1Args.push_back("-fuse-init-array");
201}
202
203void Fuchsia::AddClangSystemIncludeArgs(const ArgList &DriverArgs,
204 ArgStringList &CC1Args) const {
205 const Driver &D = getDriver();
206
207 if (DriverArgs.hasArg(options::OPT_nostdinc))
208 return;
209
210 if (!DriverArgs.hasArg(options::OPT_nobuiltininc)) {
211 SmallString<128> P(D.ResourceDir);
212 llvm::sys::path::append(P, "include");
213 addSystemInclude(DriverArgs, CC1Args, P);
214 }
215
216 if (DriverArgs.hasArg(options::OPT_nostdlibinc))
217 return;
218
219 // Check for configure-time C include directories.
220 StringRef CIncludeDirs(C_INCLUDE_DIRS);
221 if (CIncludeDirs != "") {
222 SmallVector<StringRef, 5> dirs;
223 CIncludeDirs.split(dirs, ":");
224 for (StringRef dir : dirs) {
225 StringRef Prefix =
226 llvm::sys::path::is_absolute(dir) ? StringRef(D.SysRoot) : "";
227 addExternCSystemInclude(DriverArgs, CC1Args, Prefix + dir);
228 }
229 return;
230 }
231
Petr Hosekcc248512017-07-12 22:14:41 +0000232 if (!D.SysRoot.empty()) {
233 SmallString<128> P(D.SysRoot);
234 llvm::sys::path::append(P, "include");
235 addExternCSystemInclude(DriverArgs, CC1Args, P.str());
236 }
David L. Jonesf561aba2017-03-08 01:02:16 +0000237}
238
Petr Hosekcc248512017-07-12 22:14:41 +0000239void Fuchsia::AddClangCXXStdlibIncludeArgs(const ArgList &DriverArgs,
240 ArgStringList &CC1Args) const {
241 if (DriverArgs.hasArg(options::OPT_nostdlibinc) ||
242 DriverArgs.hasArg(options::OPT_nostdincxx))
243 return;
244
245 switch (GetCXXStdlibType(DriverArgs)) {
246 case ToolChain::CST_Libcxx: {
Petr Hosek887f26d2018-06-28 03:11:52 +0000247 SmallString<128> P(getDriver().ResourceDir);
Petr Hosekcc248512017-07-12 22:14:41 +0000248 llvm::sys::path::append(P, "include", "c++", "v1");
249 addSystemInclude(DriverArgs, CC1Args, P.str());
250 break;
251 }
252
253 default:
254 llvm_unreachable("invalid stdlib name");
255 }
David L. Jonesf561aba2017-03-08 01:02:16 +0000256}
257
258void Fuchsia::AddCXXStdlibLibArgs(const ArgList &Args,
259 ArgStringList &CmdArgs) const {
Petr Hosekcc248512017-07-12 22:14:41 +0000260 switch (GetCXXStdlibType(Args)) {
261 case ToolChain::CST_Libcxx:
262 CmdArgs.push_back("-lc++");
Petr Hosekcc248512017-07-12 22:14:41 +0000263 break;
264
265 case ToolChain::CST_Libstdcxx:
266 llvm_unreachable("invalid stdlib name");
267 }
David L. Jonesf561aba2017-03-08 01:02:16 +0000268}
269
270SanitizerMask Fuchsia::getSupportedSanitizers() const {
271 SanitizerMask Res = ToolChain::getSupportedSanitizers();
Petr Hosekb31582b2017-08-03 23:02:22 +0000272 Res |= SanitizerKind::Address;
Petr Hosek34230842018-01-19 01:58:26 +0000273 Res |= SanitizerKind::Fuzzer;
Petr Hosek99c8eb82018-03-27 21:33:12 +0000274 Res |= SanitizerKind::FuzzerNoLink;
Petr Hosek34230842018-01-19 01:58:26 +0000275 Res |= SanitizerKind::SafeStack;
Petr Hosek37ae5af2017-12-21 22:04:31 +0000276 Res |= SanitizerKind::Scudo;
David L. Jonesf561aba2017-03-08 01:02:16 +0000277 return Res;
278}
Petr Hosekfdcbcfb2018-03-07 02:49:58 +0000279
280SanitizerMask Fuchsia::getDefaultSanitizers() const {
281 return SanitizerKind::SafeStack;
282}