1 files changed, 290 insertions, 0 deletions
diff --git a/clang/lib/Driver/ToolChains/Myriad.cpp b/clang/lib/Driver/ToolChains/Myriad.cpp
new file mode 100644
index 000000000000..2ce0f13ce3d1
--- /dev/null
+++ b/clang/lib/Driver/ToolChains/Myriad.cpp
@@ -0,0 +1,290 @@
+//===--- Myriad.cpp - Myriad ToolChain Implementations ----------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "Myriad.h"
+#include "CommonArgs.h"
+#include "clang/Driver/Compilation.h"
+#include "clang/Driver/Driver.h"
+#include "clang/Driver/DriverDiagnostic.h"
+#include "clang/Driver/Options.h"
+#include "llvm/Option/ArgList.h"
+
+using namespace clang::driver;
+using namespace clang::driver::toolchains;
+using namespace clang;
+using namespace llvm::opt;
+
+using tools::addPathIfExists;
+
+void tools::SHAVE::Compiler::ConstructJob(Compilation &C, const JobAction &JA,
+                                          const InputInfo &Output,
+                                          const InputInfoList &Inputs,
+                                          const ArgList &Args,
+                                          const char *LinkingOutput) const {
+  ArgStringList CmdArgs;
+  assert(Inputs.size() == 1);
+  const InputInfo &II = Inputs[0];
+  assert(II.getType() == types::TY_C || II.getType() == types::TY_CXX ||
+         II.getType() == types::TY_PP_CXX);
+
+  if (JA.getKind() == Action::PreprocessJobClass) {
+    Args.ClaimAllArgs();
+    CmdArgs.push_back("-E");
+  } else {
+    assert(Output.getType() == types::TY_PP_Asm); // Require preprocessed asm.
+    CmdArgs.push_back("-S");
+    CmdArgs.push_back("-fno-exceptions"); // Always do this even if unspecified.
+  }
+  CmdArgs.push_back("-DMYRIAD2");
+
+  // Append all -I, -iquote, -isystem paths, defines/undefines, 'f'
+  // flags, 'g' flags, 'M' flags, optimize flags, warning options,
+  // mcpu flags, mllvm flags, and Xclang flags.
+  // These are spelled the same way in clang and moviCompile.
+  Args.AddAllArgsExcept(
+      CmdArgs,
+      {options::OPT_I_Group, options::OPT_clang_i_Group, options::OPT_std_EQ,
+       options::OPT_D, options::OPT_U, options::OPT_f_Group,
+       options::OPT_f_clang_Group, options::OPT_g_Group, options::OPT_M_Group,
+       options::OPT_O_Group, options::OPT_W_Group, options::OPT_mcpu_EQ,
+       options::OPT_mllvm, options::OPT_Xclang},
+      {options::OPT_fno_split_dwarf_inlining});
+  Args.hasArg(options::OPT_fno_split_dwarf_inlining); // Claim it if present.
+
+  // If we're producing a dependency file, and assembly is the final action,
+  // then the name of the target in the dependency file should be the '.o'
+  // file, not the '.s' file produced by this step. For example, instead of
+  //  /tmp/mumble.s: mumble.c .../someheader.h
+  // the filename on the lefthand side should be "mumble.o"
+  if (Args.getLastArg(options::OPT_MF) && !Args.getLastArg(options::OPT_MT) &&
+      C.getActions().size() == 1 &&
+      C.getActions()[0]->getKind() == Action::AssembleJobClass) {
+    Arg *A = Args.getLastArg(options::OPT_o);
+    if (A) {
+      CmdArgs.push_back("-MT");
+      CmdArgs.push_back(Args.MakeArgString(A->getValue()));
+    }
+  }
+
+  CmdArgs.push_back(II.getFilename());
+  CmdArgs.push_back("-o");
+  CmdArgs.push_back(Output.getFilename());
+
+  std::string Exec =
+      Args.MakeArgString(getToolChain().GetProgramPath("moviCompile"));
+  C.addCommand(std::make_unique<Command>(JA, *this, Args.MakeArgString(Exec),
+                                          CmdArgs, Inputs));
+}
+
+void tools::SHAVE::Assembler::ConstructJob(Compilation &C, const JobAction &JA,
+                                           const InputInfo &Output,
+                                           const InputInfoList &Inputs,
+                                           const ArgList &Args,
+                                           const char *LinkingOutput) const {
+  ArgStringList CmdArgs;
+
+  assert(Inputs.size() == 1);
+  const InputInfo &II = Inputs[0];
+  assert(II.getType() == types::TY_PP_Asm); // Require preprocessed asm input.
+  assert(Output.getType() == types::TY_Object);
+
+  CmdArgs.push_back("-no6thSlotCompression");
+  const Arg *CPUArg = Args.getLastArg(options::OPT_mcpu_EQ);
+  if (CPUArg)
+    CmdArgs.push_back(
+        Args.MakeArgString("-cv:" + StringRef(CPUArg->getValue())));
+  CmdArgs.push_back("-noSPrefixing");
+  CmdArgs.push_back("-a"); // Mystery option.
+  Args.AddAllArgValues(CmdArgs, options::OPT_Wa_COMMA, options::OPT_Xassembler);
+  for (const Arg *A : Args.filtered(options::OPT_I, options::OPT_isystem)) {
+    A->claim();
+    CmdArgs.push_back(
+        Args.MakeArgString(std::string("-i:") + A->getValue(0)));
+  }
+  CmdArgs.push_back(II.getFilename());
+  CmdArgs.push_back(
+      Args.MakeArgString(std::string("-o:") + Output.getFilename()));
+
+  std::string Exec =
+      Args.MakeArgString(getToolChain().GetProgramPath("moviAsm"));
+  C.addCommand(std::make_unique<Command>(JA, *this, Args.MakeArgString(Exec),
+                                          CmdArgs, Inputs));
+}
+
+void tools::Myriad::Linker::ConstructJob(Compilation &C, const JobAction &JA,
+                                         const InputInfo &Output,
+                                         const InputInfoList &Inputs,
+                                         const ArgList &Args,
+                                         const char *LinkingOutput) const {
+  const auto &TC =
+      static_cast<const toolchains::MyriadToolChain &>(getToolChain());
+  const llvm::Triple &T = TC.getTriple();
+  ArgStringList CmdArgs;
+  bool UseStartfiles =
+      !Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles);
+  bool UseDefaultLibs =
+      !Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs);
+  // Silence warning if the args contain both -nostdlib and -stdlib=.
+  Args.getLastArg(options::OPT_stdlib_EQ);
+
+  if (T.getArch() == llvm::Triple::sparc)
+    CmdArgs.push_back("-EB");
+  else // SHAVE assumes little-endian, and sparcel is expressly so.
+    CmdArgs.push_back("-EL");
+
+  // The remaining logic is mostly like gnutools::Linker::ConstructJob,
+  // but we never pass through a --sysroot option and various other bits.
+  // For example, there are no sanitizers (yet) nor gold linker.
+
+  // Eat some arguments that may be present but have no effect.
+  Args.ClaimAllArgs(options::OPT_g_Group);
+  Args.ClaimAllArgs(options::OPT_w);
+  Args.ClaimAllArgs(options::OPT_static_libgcc);
+
+  if (Args.hasArg(options::OPT_s)) // Pass the 'strip' option.
+    CmdArgs.push_back("-s");
+
+  CmdArgs.push_back("-o");
+  CmdArgs.push_back(Output.getFilename());
+
+  if (UseStartfiles) {
+    // If you want startfiles, it means you want the builtin crti and crtbegin,
+    // but not crt0. Myriad link commands provide their own crt0.o as needed.
+    CmdArgs.push_back(Args.MakeArgString(TC.GetFilePath("crti.o")));
+    CmdArgs.push_back(Args.MakeArgString(TC.GetFilePath("crtbegin.o")));
+  }
+
+  Args.AddAllArgs(CmdArgs, {options::OPT_L, options::OPT_T_Group,
+                            options::OPT_e, options::OPT_s, options::OPT_t,
+                            options::OPT_Z_Flag, options::OPT_r});
+
+  TC.AddFilePathLibArgs(Args, CmdArgs);
+
+  bool NeedsSanitizerDeps = addSanitizerRuntimes(TC, Args, CmdArgs);
+  AddLinkerInputs(getToolChain(), Inputs, Args, CmdArgs, JA);
+
+  if (UseDefaultLibs) {
+    if (NeedsSanitizerDeps)
+      linkSanitizerRuntimeDeps(TC, CmdArgs);
+    if (C.getDriver().CCCIsCXX()) {
+      if (TC.GetCXXStdlibType(Args) == ToolChain::CST_Libcxx) {
+        CmdArgs.push_back("-lc++");
+        CmdArgs.push_back("-lc++abi");
+      } else
+        CmdArgs.push_back("-lstdc++");
+    }
+    if (T.getOS() == llvm::Triple::RTEMS) {
+      CmdArgs.push_back("--start-group");
+      CmdArgs.push_back("-lc");
+      CmdArgs.push_back("-lgcc"); // circularly dependent on rtems
+      // You must provide your own "-L" option to enable finding these.
+      CmdArgs.push_back("-lrtemscpu");
+      CmdArgs.push_back("-lrtemsbsp");
+      CmdArgs.push_back("--end-group");
+    } else {
+      CmdArgs.push_back("-lc");
+      CmdArgs.push_back("-lgcc");
+    }
+  }
+  if (UseStartfiles) {
+    CmdArgs.push_back(Args.MakeArgString(TC.GetFilePath("crtend.o")));
+    CmdArgs.push_back(Args.MakeArgString(TC.GetFilePath("crtn.o")));
+  }
+
+  std::string Exec =
+      Args.MakeArgString(TC.GetProgramPath("sparc-myriad-rtems-ld"));
+  C.addCommand(std::make_unique<Command>(JA, *this, Args.MakeArgString(Exec),
+                                          CmdArgs, Inputs));
+}
+
+MyriadToolChain::MyriadToolChain(const Driver &D, const llvm::Triple &Triple,
+                                 const ArgList &Args)
+    : Generic_ELF(D, Triple, Args) {
+  // If a target of 'sparc-myriad-elf' is specified to clang, it wants to use
+  // 'sparc-myriad--elf' (note the unknown OS) as the canonical triple.
+  // This won't work to find gcc. Instead we give the installation detector an
+  // extra triple, which is preferable to further hacks of the logic that at
+  // present is based solely on getArch(). In particular, it would be wrong to
+  // choose the myriad installation when targeting a non-myriad sparc install.
+  switch (Triple.getArch()) {
+  default:
+    D.Diag(clang::diag::err_target_unsupported_arch)
+        << Triple.getArchName() << "myriad";
+    LLVM_FALLTHROUGH;
+  case llvm::Triple::shave:
+    return;
+  case llvm::Triple::sparc:
+  case llvm::Triple::sparcel:
+    GCCInstallation.init(Triple, Args, {"sparc-myriad-rtems"});
+  }
+
+  if (GCCInstallation.isValid()) {
+    // This directory contains crt{i,n,begin,end}.o as well as libgcc.
+    // These files are tied to a particular version of gcc.
+    SmallString<128> CompilerSupportDir(GCCInstallation.getInstallPath());
+    addPathIfExists(D, CompilerSupportDir, getFilePaths());
+  }
+  // libstd++ and libc++ must both be found in this one place.
+  addPathIfExists(D, D.Dir + "/../sparc-myriad-rtems/lib", getFilePaths());
+}
+
+MyriadToolChain::~MyriadToolChain() {}
+
+void MyriadToolChain::AddClangSystemIncludeArgs(const ArgList &DriverArgs,
+                                                ArgStringList &CC1Args) const {
+  if (!DriverArgs.hasArg(clang::driver::options::OPT_nostdinc))
+    addSystemInclude(DriverArgs, CC1Args, getDriver().SysRoot + "/include");
+}
+
+void MyriadToolChain::addLibCxxIncludePaths(
+    const llvm::opt::ArgList &DriverArgs,
+    llvm::opt::ArgStringList &CC1Args) const {
+  std::string Path(getDriver().getInstalledDir());
+  addSystemInclude(DriverArgs, CC1Args, Path + "/../include/c++/v1");
+}
+
+void MyriadToolChain::addLibStdCxxIncludePaths(
+    const llvm::opt::ArgList &DriverArgs,
+    llvm::opt::ArgStringList &CC1Args) const {
+  StringRef LibDir = GCCInstallation.getParentLibPath();
+  const GCCVersion &Version = GCCInstallation.getVersion();
+  StringRef TripleStr = GCCInstallation.getTriple().str();
+  const Multilib &Multilib = GCCInstallation.getMultilib();
+  addLibStdCXXIncludePaths(
+      LibDir.str() + "/../" + TripleStr.str() + "/include/c++/" + Version.Text,
+      "", TripleStr, "", "", Multilib.includeSuffix(), DriverArgs, CC1Args);
+}
+
+// MyriadToolChain handles several triples:
+//  {shave,sparc{,el}}-myriad-{rtems,unknown}-elf
+Tool *MyriadToolChain::SelectTool(const JobAction &JA) const {
+  // The inherited method works fine if not targeting the SHAVE.
+  if (!isShaveCompilation(getTriple()))
+    return ToolChain::SelectTool(JA);
+  switch (JA.getKind()) {
+  case Action::PreprocessJobClass:
+  case Action::CompileJobClass:
+    if (!Compiler)
+      Compiler.reset(new tools::SHAVE::Compiler(*this));
+    return Compiler.get();
+  case Action::AssembleJobClass:
+    if (!Assembler)
+      Assembler.reset(new tools::SHAVE::Assembler(*this));
+    return Assembler.get();
+  default:
+    return ToolChain::getTool(JA.getKind());
+  }
+}
+
+Tool *MyriadToolChain::buildLinker() const {
+  return new tools::Myriad::Linker(*this);
+}
+
+SanitizerMask MyriadToolChain::getSupportedSanitizers() const {
+  return SanitizerKind::Address;
+}