clang/lib/Driver/ToolChains/Myriad.cpp

   1 //===--- Myriad.cpp - Myriad ToolChain Implementations ----------*- C++ -*-===//
   2 //
   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
   6 //
   7 //===----------------------------------------------------------------------===//
   8
   9 #include "Myriad.h"
  10 #include "CommonArgs.h"
  11 #include "clang/Driver/Compilation.h"
  12 #include "clang/Driver/Driver.h"
  13 #include "clang/Driver/DriverDiagnostic.h"
  14 #include "clang/Driver/Options.h"
  15 #include "llvm/Option/ArgList.h"
  16
  17 using namespace clang::driver;
  18 using namespace clang::driver::toolchains;
  19 using namespace clang;
  20 using namespace llvm::opt;
  21
  22 using tools::addPathIfExists;
  23
  24 void tools::SHAVE::Compiler::ConstructJob(Compilation &C, const JobAction &JA,
  25                                           const InputInfo &Output,
  26                                           const InputInfoList &Inputs,
  27                                           const ArgList &Args,
  28                                           const char *LinkingOutput) const {
  29   ArgStringList CmdArgs;
  30   assert(Inputs.size() == 1);
  31   const InputInfo &II = Inputs[0];
  32   assert(II.getType() == types::TY_C || II.getType() == types::TY_CXX ||
  33          II.getType() == types::TY_PP_CXX);
  34
  35   if (JA.getKind() == Action::PreprocessJobClass) {
  36     Args.ClaimAllArgs();
  37     CmdArgs.push_back("-E");
  38   } else {
  39     assert(Output.getType() == types::TY_PP_Asm); // Require preprocessed asm.
  40     CmdArgs.push_back("-S");
  41     CmdArgs.push_back("-fno-exceptions"); // Always do this even if unspecified.
  42   }
  43   CmdArgs.push_back("-DMYRIAD2");
  44
  45   // Append all -I, -iquote, -isystem paths, defines/undefines, 'f'
  46   // flags, 'g' flags, 'M' flags, optimize flags, warning options,
  47   // mcpu flags, mllvm flags, and Xclang flags.
  48   // These are spelled the same way in clang and moviCompile.
  49   Args.AddAllArgsExcept(
  50       CmdArgs,
  51       {options::OPT_I_Group, options::OPT_clang_i_Group, options::OPT_std_EQ,
  52        options::OPT_D, options::OPT_U, options::OPT_f_Group,
  53        options::OPT_f_clang_Group, options::OPT_g_Group, options::OPT_M_Group,
  54        options::OPT_O_Group, options::OPT_W_Group, options::OPT_mcpu_EQ,
  55        options::OPT_mllvm, options::OPT_Xclang},
  56       {options::OPT_fno_split_dwarf_inlining});
  57   Args.hasArg(options::OPT_fno_split_dwarf_inlining); // Claim it if present.
  58
  59   // If we're producing a dependency file, and assembly is the final action,
  60   // then the name of the target in the dependency file should be the '.o'
  61   // file, not the '.s' file produced by this step. For example, instead of
  62   //  /tmp/mumble.s: mumble.c .../someheader.h
  63   // the filename on the lefthand side should be "mumble.o"
  64   if (Args.getLastArg(options::OPT_MF) && !Args.getLastArg(options::OPT_MT) &&
  65       C.getActions().size() == 1 &&
  66       C.getActions()[0]->getKind() == Action::AssembleJobClass) {
  67     Arg *A = Args.getLastArg(options::OPT_o);
  68     if (A) {
  69       CmdArgs.push_back("-MT");
  70       CmdArgs.push_back(Args.MakeArgString(A->getValue()));
  71     }
  72   }
  73
  74   CmdArgs.push_back(II.getFilename());
  75   CmdArgs.push_back("-o");
  76   CmdArgs.push_back(Output.getFilename());
  77
  78   std::string Exec =
  79       Args.MakeArgString(getToolChain().GetProgramPath("moviCompile"));
  80   C.addCommand(std::make_unique<Command>(JA, *this, ResponseFileSupport::None(),
  81                                          Args.MakeArgString(Exec), CmdArgs,
  82                                          Inputs, Output));
  83 }
  84
  85 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(std::make_unique<Command>(JA, *this, ResponseFileSupport::None(),
 117                                          Args.MakeArgString(Exec), CmdArgs,
 118                                          Inputs, Output));
 119 }
 120
 121 void tools::Myriad::Linker::ConstructJob(Compilation &C, const JobAction &JA,
 122                                          const InputInfo &Output,
 123                                          const InputInfoList &Inputs,
 124                                          const ArgList &Args,
 125                                          const char *LinkingOutput) const {
 126   const auto &TC =
 127       static_cast<const toolchains::MyriadToolChain &>(getToolChain());
 128   const llvm::Triple &T = TC.getTriple();
 129   ArgStringList CmdArgs;
 130   bool UseStartfiles =
 131       !Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles);
 132   bool UseDefaultLibs =
 133       !Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs);
 134   // Silence warning if the args contain both -nostdlib and -stdlib=.
 135   Args.getLastArg(options::OPT_stdlib_EQ);
 136
 137   if (T.getArch() == llvm::Triple::sparc)
 138     CmdArgs.push_back("-EB");
 139   else // SHAVE assumes little-endian, and sparcel is expressly so.
 140     CmdArgs.push_back("-EL");
 141
 142   // The remaining logic is mostly like gnutools::Linker::ConstructJob,
 143   // but we never pass through a --sysroot option and various other bits.
 144   // For example, there are no sanitizers (yet) nor gold linker.
 145
 146   // Eat some arguments that may be present but have no effect.
 147   Args.ClaimAllArgs(options::OPT_g_Group);
 148   Args.ClaimAllArgs(options::OPT_w);
 149   Args.ClaimAllArgs(options::OPT_static_libgcc);
 150
 151   if (Args.hasArg(options::OPT_s)) // Pass the 'strip' option.
 152     CmdArgs.push_back("-s");
 153
 154   CmdArgs.push_back("-o");
 155   CmdArgs.push_back(Output.getFilename());
 156
 157   if (UseStartfiles) {
 158     // If you want startfiles, it means you want the builtin crti and crtbegin,
 159     // but not crt0. Myriad link commands provide their own crt0.o as needed.
 160     CmdArgs.push_back(Args.MakeArgString(TC.GetFilePath("crti.o")));
 161     CmdArgs.push_back(Args.MakeArgString(TC.GetFilePath("crtbegin.o")));
 162   }
 163
 164   Args.AddAllArgs(CmdArgs, {options::OPT_L, options::OPT_T_Group,
 165                             options::OPT_e, options::OPT_s, options::OPT_t,
 166                             options::OPT_Z_Flag, options::OPT_r});
 167
 168   TC.AddFilePathLibArgs(Args, CmdArgs);
 169
 170   bool NeedsSanitizerDeps = addSanitizerRuntimes(TC, Args, CmdArgs);
 171   AddLinkerInputs(getToolChain(), Inputs, Args, CmdArgs, JA);
 172
 173   if (UseDefaultLibs) {
 174     if (NeedsSanitizerDeps)
 175       linkSanitizerRuntimeDeps(TC, CmdArgs);
 176     if (C.getDriver().CCCIsCXX()) {
 177       if (TC.GetCXXStdlibType(Args) == ToolChain::CST_Libcxx) {
 178         CmdArgs.push_back("-lc++");
 179         CmdArgs.push_back("-lc++abi");
 180       } else
 181         CmdArgs.push_back("-lstdc++");
 182     }
 183     if (T.getOS() == llvm::Triple::RTEMS) {
 184       CmdArgs.push_back("--start-group");
 185       CmdArgs.push_back("-lc");
 186       CmdArgs.push_back("-lgcc"); // circularly dependent on rtems
 187       // You must provide your own "-L" option to enable finding these.
 188       CmdArgs.push_back("-lrtemscpu");
 189       CmdArgs.push_back("-lrtemsbsp");
 190       CmdArgs.push_back("--end-group");
 191     } else {
 192       CmdArgs.push_back("-lc");
 193       CmdArgs.push_back("-lgcc");
 194     }
 195   }
 196   if (UseStartfiles) {
 197     CmdArgs.push_back(Args.MakeArgString(TC.GetFilePath("crtend.o")));
 198     CmdArgs.push_back(Args.MakeArgString(TC.GetFilePath("crtn.o")));
 199   }
 200
 201   std::string Exec =
 202       Args.MakeArgString(TC.GetProgramPath("sparc-myriad-rtems-ld"));
 203   C.addCommand(std::make_unique<Command>(
 204       JA, *this, ResponseFileSupport::AtFileCurCP(), Args.MakeArgString(Exec),
 205       CmdArgs, Inputs, Output));
 206 }
 207
 208 MyriadToolChain::MyriadToolChain(const Driver &D, const llvm::Triple &Triple,
 209                                  const ArgList &Args)
 210     : Generic_ELF(D, Triple, Args) {
 211   // If a target of 'sparc-myriad-elf' is specified to clang, it wants to use
 212   // 'sparc-myriad--elf' (note the unknown OS) as the canonical triple.
 213   // This won't work to find gcc. Instead we give the installation detector an
 214   // extra triple, which is preferable to further hacks of the logic that at
 215   // present is based solely on getArch(). In particular, it would be wrong to
 216   // choose the myriad installation when targeting a non-myriad sparc install.
 217   switch (Triple.getArch()) {
 218   default:
 219     D.Diag(clang::diag::err_target_unsupported_arch)
 220         << Triple.getArchName() << "myriad";
 221     [[fallthrough]];
 222   case llvm::Triple::shave:
 223     return;
 224   case llvm::Triple::sparc:
 225   case llvm::Triple::sparcel:
 226     GCCInstallation.init(Triple, Args, {"sparc-myriad-rtems"});
 227   }
 228
 229   if (GCCInstallation.isValid()) {
 230     // This directory contains crt{i,n,begin,end}.o as well as libgcc.
 231     // These files are tied to a particular version of gcc.
 232     SmallString<128> CompilerSupportDir(GCCInstallation.getInstallPath());
 233     addPathIfExists(D, CompilerSupportDir, getFilePaths());
 234   }
 235   // libstd++ and libc++ must both be found in this one place.
 236   addPathIfExists(D, D.Dir + "/../sparc-myriad-rtems/lib", getFilePaths());
 237 }
 238
 239 MyriadToolChain::~MyriadToolChain() {}
 240
 241 void MyriadToolChain::AddClangSystemIncludeArgs(const ArgList &DriverArgs,
 242                                                 ArgStringList &CC1Args) const {
 243   if (!DriverArgs.hasArg(clang::driver::options::OPT_nostdinc))
 244     addSystemInclude(DriverArgs, CC1Args, getDriver().SysRoot + "/include");
 245 }
 246
 247 void MyriadToolChain::addLibCxxIncludePaths(
 248     const llvm::opt::ArgList &DriverArgs,
 249     llvm::opt::ArgStringList &CC1Args) const {
 250   std::string Path(getDriver().getInstalledDir());
 251   addSystemInclude(DriverArgs, CC1Args, Path + "/../include/c++/v1");
 252 }
 253
 254 void MyriadToolChain::addLibStdCxxIncludePaths(
 255     const llvm::opt::ArgList &DriverArgs,
 256     llvm::opt::ArgStringList &CC1Args) const {
 257   StringRef LibDir = GCCInstallation.getParentLibPath();
 258   const GCCVersion &Version = GCCInstallation.getVersion();
 259   StringRef TripleStr = GCCInstallation.getTriple().str();
 260   const Multilib &Multilib = GCCInstallation.getMultilib();
 261   addLibStdCXXIncludePaths(
 262       LibDir.str() + "/../" + TripleStr.str() + "/include/c++/" + Version.Text,
 263       TripleStr, Multilib.includeSuffix(), DriverArgs, CC1Args);
 264 }
 265
 266 // MyriadToolChain handles several triples:
 267 //  {shave,sparc{,el}}-myriad-{rtems,unknown}-elf
 268 Tool *MyriadToolChain::SelectTool(const JobAction &JA) const {
 269   // The inherited method works fine if not targeting the SHAVE.
 270   if (!isShaveCompilation(getTriple()))
 271     return ToolChain::SelectTool(JA);
 272   switch (JA.getKind()) {
 273   case Action::PreprocessJobClass:
 274   case Action::CompileJobClass:
 275     if (!Compiler)
 276       Compiler.reset(new tools::SHAVE::Compiler(*this));
 277     return Compiler.get();
 278   case Action::AssembleJobClass:
 279     if (!Assembler)
 280       Assembler.reset(new tools::SHAVE::Assembler(*this));
 281     return Assembler.get();
 282   default:
 283     return ToolChain::getTool(JA.getKind());
 284   }
 285 }
 286
 287 Tool *MyriadToolChain::buildLinker() const {
 288   return new tools::Myriad::Linker(*this);
 289 }
 290
 291 SanitizerMask MyriadToolChain::getSupportedSanitizers() const {
 292   return SanitizerKind::Address;
 293 }