1 //===--- Myriad.cpp - Myriad 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 "Myriad.h"
11 #include "CommonArgs.h"
12 #include "clang/Driver/Compilation.h"
13 #include "clang/Driver/Driver.h"
14 #include "clang/Driver/DriverDiagnostic.h"
15 #include "clang/Driver/Options.h"
16 #include "llvm/Option/ArgList.h"
17
18 using namespace clang::driver;
19 using namespace clang::driver::toolchains;
20 using namespace clang;
21 using namespace llvm::opt;
22
23 using tools::addPathIfExists;
24
ConstructJob(Compilation & C,const JobAction & JA,const InputInfo & Output,const InputInfoList & Inputs,const ArgList & Args,const char * LinkingOutput) const25 void tools::SHAVE::Compiler::ConstructJob(Compilation &C, const JobAction &JA,
26 const InputInfo &Output,
27 const InputInfoList &Inputs,
28 const ArgList &Args,
29 const char *LinkingOutput) const {
30 ArgStringList CmdArgs;
31 assert(Inputs.size() == 1);
32 const InputInfo &II = Inputs[0];
33 assert(II.getType() == types::TY_C || II.getType() == types::TY_CXX ||
34 II.getType() == types::TY_PP_CXX);
35
36 if (JA.getKind() == Action::PreprocessJobClass) {
37 Args.ClaimAllArgs();
38 CmdArgs.push_back("-E");
39 } else {
40 assert(Output.getType() == types::TY_PP_Asm); // Require preprocessed asm.
41 CmdArgs.push_back("-S");
42 CmdArgs.push_back("-fno-exceptions"); // Always do this even if unspecified.
43 }
44 CmdArgs.push_back("-DMYRIAD2");
45
46 // Append all -I, -iquote, -isystem paths, defines/undefines, 'f'
47 // flags, 'g' flags, 'M' flags, optimize flags, warning options,
48 // mcpu flags, mllvm flags, and Xclang flags.
49 // These are spelled the same way in clang and moviCompile.
50 Args.AddAllArgsExcept(
51 CmdArgs,
52 {options::OPT_I_Group, options::OPT_clang_i_Group, options::OPT_std_EQ,
53 options::OPT_D, options::OPT_U, options::OPT_f_Group,
54 options::OPT_f_clang_Group, options::OPT_g_Group, options::OPT_M_Group,
55 options::OPT_O_Group, options::OPT_W_Group, options::OPT_mcpu_EQ,
56 options::OPT_mllvm, options::OPT_Xclang},
57 {options::OPT_fno_split_dwarf_inlining});
58 Args.hasArg(options::OPT_fno_split_dwarf_inlining); // Claim it if present.
59
60 // If we're producing a dependency file, and assembly is the final action,
61 // then the name of the target in the dependency file should be the '.o'
62 // file, not the '.s' file produced by this step. For example, instead of
63 // /tmp/mumble.s: mumble.c .../someheader.h
64 // the filename on the lefthand side should be "mumble.o"
65 if (Args.getLastArg(options::OPT_MF) && !Args.getLastArg(options::OPT_MT) &&
66 C.getActions().size() == 1 &&
67 C.getActions()[0]->getKind() == Action::AssembleJobClass) {
68 Arg *A = Args.getLastArg(options::OPT_o);
69 if (A) {
70 CmdArgs.push_back("-MT");
71 CmdArgs.push_back(Args.MakeArgString(A->getValue()));
72 }
73 }
74
75 CmdArgs.push_back(II.getFilename());
76 CmdArgs.push_back("-o");
77 CmdArgs.push_back(Output.getFilename());
78
79 std::string Exec =
80 Args.MakeArgString(getToolChain().GetProgramPath("moviCompile"));
81 C.addCommand(llvm::make_unique<Command>(JA, *this, Args.MakeArgString(Exec),
82 CmdArgs, Inputs));
83 }
84
ConstructJob(Compilation & C,const JobAction & JA,const InputInfo & Output,const InputInfoList & Inputs,const ArgList & Args,const char * LinkingOutput) const85 void tools::SHAVE::Assembler::ConstructJob(Compilation &C, const JobAction &JA,
86 const InputInfo &Output,
87 const InputInfoList &Inputs,
88 const ArgList &Args,
89 const char *LinkingOutput) const {
90 ArgStringList CmdArgs;
91
92 assert(Inputs.size() == 1);
93 const InputInfo &II = Inputs[0];
94 assert(II.getType() == types::TY_PP_Asm); // Require preprocessed asm input.
95 assert(Output.getType() == types::TY_Object);
96
97 CmdArgs.push_back("-no6thSlotCompression");
98 const Arg *CPUArg = Args.getLastArg(options::OPT_mcpu_EQ);
99 if (CPUArg)
100 CmdArgs.push_back(
101 Args.MakeArgString("-cv:" + StringRef(CPUArg->getValue())));
102 CmdArgs.push_back("-noSPrefixing");
103 CmdArgs.push_back("-a"); // Mystery option.
104 Args.AddAllArgValues(CmdArgs, options::OPT_Wa_COMMA, options::OPT_Xassembler);
105 for (const Arg *A : Args.filtered(options::OPT_I, options::OPT_isystem)) {
106 A->claim();
107 CmdArgs.push_back(
108 Args.MakeArgString(std::string("-i:") + A->getValue(0)));
109 }
110 CmdArgs.push_back(II.getFilename());
111 CmdArgs.push_back(
112 Args.MakeArgString(std::string("-o:") + Output.getFilename()));
113
114 std::string Exec =
115 Args.MakeArgString(getToolChain().GetProgramPath("moviAsm"));
116 C.addCommand(llvm::make_unique<Command>(JA, *this, Args.MakeArgString(Exec),
117 CmdArgs, Inputs));
118 }
119
ConstructJob(Compilation & C,const JobAction & JA,const InputInfo & Output,const InputInfoList & Inputs,const ArgList & Args,const char * LinkingOutput) const120 void tools::Myriad::Linker::ConstructJob(Compilation &C, const JobAction &JA,
121 const InputInfo &Output,
122 const InputInfoList &Inputs,
123 const ArgList &Args,
124 const char *LinkingOutput) const {
125 const auto &TC =
126 static_cast<const toolchains::MyriadToolChain &>(getToolChain());
127 const llvm::Triple &T = TC.getTriple();
128 ArgStringList CmdArgs;
129 bool UseStartfiles =
130 !Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles);
131 bool UseDefaultLibs =
132 !Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs);
133 // Silence warning if the args contain both -nostdlib and -stdlib=.
134 Args.getLastArg(options::OPT_stdlib_EQ);
135
136 if (T.getArch() == llvm::Triple::sparc)
137 CmdArgs.push_back("-EB");
138 else // SHAVE assumes little-endian, and sparcel is expressly so.
139 CmdArgs.push_back("-EL");
140
141 // The remaining logic is mostly like gnutools::Linker::ConstructJob,
142 // but we never pass through a --sysroot option and various other bits.
143 // For example, there are no sanitizers (yet) nor gold linker.
144
145 // Eat some arguments that may be present but have no effect.
146 Args.ClaimAllArgs(options::OPT_g_Group);
147 Args.ClaimAllArgs(options::OPT_w);
148 Args.ClaimAllArgs(options::OPT_static_libgcc);
149
150 if (Args.hasArg(options::OPT_s)) // Pass the 'strip' option.
151 CmdArgs.push_back("-s");
152
153 CmdArgs.push_back("-o");
154 CmdArgs.push_back(Output.getFilename());
155
156 if (UseStartfiles) {
157 // If you want startfiles, it means you want the builtin crti and crtbegin,
158 // but not crt0. Myriad link commands provide their own crt0.o as needed.
159 CmdArgs.push_back(Args.MakeArgString(TC.GetFilePath("crti.o")));
160 CmdArgs.push_back(Args.MakeArgString(TC.GetFilePath("crtbegin.o")));
161 }
162
163 Args.AddAllArgs(CmdArgs, {options::OPT_L, options::OPT_T_Group,
164 options::OPT_e, options::OPT_s, options::OPT_t,
165 options::OPT_Z_Flag, options::OPT_r});
166
167 TC.AddFilePathLibArgs(Args, CmdArgs);
168
169 bool NeedsSanitizerDeps = addSanitizerRuntimes(TC, Args, CmdArgs);
170 AddLinkerInputs(getToolChain(), Inputs, Args, CmdArgs, JA);
171
172 if (UseDefaultLibs) {
173 if (NeedsSanitizerDeps)
174 linkSanitizerRuntimeDeps(TC, CmdArgs);
175 if (C.getDriver().CCCIsCXX()) {
176 if (TC.GetCXXStdlibType(Args) == ToolChain::CST_Libcxx) {
177 CmdArgs.push_back("-lc++");
178 CmdArgs.push_back("-lc++abi");
179 } else
180 CmdArgs.push_back("-lstdc++");
181 }
182 if (T.getOS() == llvm::Triple::RTEMS) {
183 CmdArgs.push_back("--start-group");
184 CmdArgs.push_back("-lc");
185 CmdArgs.push_back("-lgcc"); // circularly dependent on rtems
186 // You must provide your own "-L" option to enable finding these.
187 CmdArgs.push_back("-lrtemscpu");
188 CmdArgs.push_back("-lrtemsbsp");
189 CmdArgs.push_back("--end-group");
190 } else {
191 CmdArgs.push_back("-lc");
192 CmdArgs.push_back("-lgcc");
193 }
194 }
195 if (UseStartfiles) {
196 CmdArgs.push_back(Args.MakeArgString(TC.GetFilePath("crtend.o")));
197 CmdArgs.push_back(Args.MakeArgString(TC.GetFilePath("crtn.o")));
198 }
199
200 std::string Exec =
201 Args.MakeArgString(TC.GetProgramPath("sparc-myriad-rtems-ld"));
202 C.addCommand(llvm::make_unique<Command>(JA, *this, Args.MakeArgString(Exec),
203 CmdArgs, Inputs));
204 }
205
MyriadToolChain(const Driver & D,const llvm::Triple & Triple,const ArgList & Args)206 MyriadToolChain::MyriadToolChain(const Driver &D, const llvm::Triple &Triple,
207 const ArgList &Args)
208 : Generic_ELF(D, Triple, Args) {
209 // If a target of 'sparc-myriad-elf' is specified to clang, it wants to use
210 // 'sparc-myriad--elf' (note the unknown OS) as the canonical triple.
211 // This won't work to find gcc. Instead we give the installation detector an
212 // extra triple, which is preferable to further hacks of the logic that at
213 // present is based solely on getArch(). In particular, it would be wrong to
214 // choose the myriad installation when targeting a non-myriad sparc install.
215 switch (Triple.getArch()) {
216 default:
217 D.Diag(clang::diag::err_target_unsupported_arch)
218 << Triple.getArchName() << "myriad";
219 LLVM_FALLTHROUGH;
220 case llvm::Triple::shave:
221 return;
222 case llvm::Triple::sparc:
223 case llvm::Triple::sparcel:
224 GCCInstallation.init(Triple, Args, {"sparc-myriad-rtems"});
225 }
226
227 if (GCCInstallation.isValid()) {
228 // This directory contains crt{i,n,begin,end}.o as well as libgcc.
229 // These files are tied to a particular version of gcc.
230 SmallString<128> CompilerSupportDir(GCCInstallation.getInstallPath());
231 addPathIfExists(D, CompilerSupportDir, getFilePaths());
232 }
233 // libstd++ and libc++ must both be found in this one place.
234 addPathIfExists(D, D.Dir + "/../sparc-myriad-rtems/lib", getFilePaths());
235 }
236
~MyriadToolChain()237 MyriadToolChain::~MyriadToolChain() {}
238
AddClangSystemIncludeArgs(const ArgList & DriverArgs,ArgStringList & CC1Args) const239 void MyriadToolChain::AddClangSystemIncludeArgs(const ArgList &DriverArgs,
240 ArgStringList &CC1Args) const {
241 if (!DriverArgs.hasArg(clang::driver::options::OPT_nostdinc))
242 addSystemInclude(DriverArgs, CC1Args, getDriver().SysRoot + "/include");
243 }
244
addLibCxxIncludePaths(const llvm::opt::ArgList & DriverArgs,llvm::opt::ArgStringList & CC1Args) const245 void MyriadToolChain::addLibCxxIncludePaths(
246 const llvm::opt::ArgList &DriverArgs,
247 llvm::opt::ArgStringList &CC1Args) const {
248 std::string Path(getDriver().getInstalledDir());
249 addSystemInclude(DriverArgs, CC1Args, Path + "/../include/c++/v1");
250 }
251
addLibStdCxxIncludePaths(const llvm::opt::ArgList & DriverArgs,llvm::opt::ArgStringList & CC1Args) const252 void MyriadToolChain::addLibStdCxxIncludePaths(
253 const llvm::opt::ArgList &DriverArgs,
254 llvm::opt::ArgStringList &CC1Args) const {
255 StringRef LibDir = GCCInstallation.getParentLibPath();
256 const GCCVersion &Version = GCCInstallation.getVersion();
257 StringRef TripleStr = GCCInstallation.getTriple().str();
258 const Multilib &Multilib = GCCInstallation.getMultilib();
259 addLibStdCXXIncludePaths(
260 LibDir.str() + "/../" + TripleStr.str() + "/include/c++/" + Version.Text,
261 "", TripleStr, "", "", Multilib.includeSuffix(), DriverArgs, CC1Args);
262 }
263
264 // MyriadToolChain handles several triples:
265 // {shave,sparc{,el}}-myriad-{rtems,unknown}-elf
SelectTool(const JobAction & JA) const266 Tool *MyriadToolChain::SelectTool(const JobAction &JA) const {
267 // The inherited method works fine if not targeting the SHAVE.
268 if (!isShaveCompilation(getTriple()))
269 return ToolChain::SelectTool(JA);
270 switch (JA.getKind()) {
271 case Action::PreprocessJobClass:
272 case Action::CompileJobClass:
273 if (!Compiler)
274 Compiler.reset(new tools::SHAVE::Compiler(*this));
275 return Compiler.get();
276 case Action::AssembleJobClass:
277 if (!Assembler)
278 Assembler.reset(new tools::SHAVE::Assembler(*this));
279 return Assembler.get();
280 default:
281 return ToolChain::getTool(JA.getKind());
282 }
283 }
284
buildLinker() const285 Tool *MyriadToolChain::buildLinker() const {
286 return new tools::Myriad::Linker(*this);
287 }
288
getSupportedSanitizers() const289 SanitizerMask MyriadToolChain::getSupportedSanitizers() const {
290 return SanitizerKind::Address;
291 }
292