[Driver] Add driver support for Fuchsia
Provide toolchain and tool support for Fuchsia operating system.
Fuchsia uses compiler-rt as the runtime library and libc++, libc++abi
and libunwind as the C++ standard library. lld is used as a default
linker.
Differential Revision: https://reviews.llvm.org/D25117
llvm-svn: 283420
diff --git a/clang/lib/Driver/Driver.cpp b/clang/lib/Driver/Driver.cpp
index 1a6f27d..f26d61f 100644
--- a/clang/lib/Driver/Driver.cpp
+++ b/clang/lib/Driver/Driver.cpp
@@ -3075,6 +3075,9 @@
case llvm::Triple::NaCl:
TC = new toolchains::NaClToolChain(*this, Target, Args);
break;
+ case llvm::Triple::Fuchsia:
+ TC = new toolchains::Fuchsia(*this, Target, Args);
+ break;
case llvm::Triple::Solaris:
TC = new toolchains::Solaris(*this, Target, Args);
break;
diff --git a/clang/lib/Driver/ToolChains.cpp b/clang/lib/Driver/ToolChains.cpp
index 06cb227..a4187ab 100644
--- a/clang/lib/Driver/ToolChains.cpp
+++ b/clang/lib/Driver/ToolChains.cpp
@@ -4761,6 +4761,108 @@
ToolChain::addProfileRTLibs(Args, CmdArgs);
}
+/// Fuchsia - Fuchsia tool chain which can call as(1) and ld(1) directly.
+
+Fuchsia::Fuchsia(const Driver &D, const llvm::Triple &Triple,
+ const ArgList &Args)
+ : Generic_ELF(D, Triple, Args) {
+
+ getFilePaths().push_back(D.SysRoot + "/lib");
+ getFilePaths().push_back(D.ResourceDir + "/lib/fuchsia");
+
+ // Use LLD by default.
+ DefaultLinker = "lld";
+}
+
+Tool *Fuchsia::buildAssembler() const {
+ return new tools::gnutools::Assembler(*this);
+}
+
+Tool *Fuchsia::buildLinker() const {
+ return new tools::fuchsia::Linker(*this);
+}
+
+ToolChain::RuntimeLibType Fuchsia::GetRuntimeLibType(
+ const ArgList &Args) const {
+ if (Arg *A = Args.getLastArg(options::OPT_rtlib_EQ)) {
+ StringRef Value = A->getValue();
+ if (Value != "compiler-rt")
+ getDriver().Diag(diag::err_drv_invalid_rtlib_name)
+ << A->getAsString(Args);
+ }
+
+ return ToolChain::RLT_CompilerRT;
+}
+
+ToolChain::CXXStdlibType
+Fuchsia::GetCXXStdlibType(const ArgList &Args) const {
+ if (Arg *A = Args.getLastArg(options::OPT_stdlib_EQ)) {
+ StringRef Value = A->getValue();
+ if (Value != "libc++")
+ getDriver().Diag(diag::err_drv_invalid_stdlib_name)
+ << A->getAsString(Args);
+ }
+
+ return ToolChain::CST_Libcxx;
+}
+
+void Fuchsia::addClangTargetOptions(const ArgList &DriverArgs,
+ ArgStringList &CC1Args) const {
+ if (DriverArgs.hasFlag(options::OPT_fuse_init_array,
+ options::OPT_fno_use_init_array, true))
+ CC1Args.push_back("-fuse-init-array");
+}
+
+void Fuchsia::AddClangSystemIncludeArgs(const ArgList &DriverArgs,
+ ArgStringList &CC1Args) const {
+ const Driver &D = getDriver();
+
+ if (DriverArgs.hasArg(options::OPT_nostdinc))
+ return;
+
+ if (!DriverArgs.hasArg(options::OPT_nobuiltininc)) {
+ SmallString<128> P(D.ResourceDir);
+ llvm::sys::path::append(P, "include");
+ addSystemInclude(DriverArgs, CC1Args, P);
+ }
+
+ if (DriverArgs.hasArg(options::OPT_nostdlibinc))
+ return;
+
+ // Check for configure-time C include directories.
+ StringRef CIncludeDirs(C_INCLUDE_DIRS);
+ if (CIncludeDirs != "") {
+ SmallVector<StringRef, 5> dirs;
+ CIncludeDirs.split(dirs, ":");
+ for (StringRef dir : dirs) {
+ StringRef Prefix =
+ llvm::sys::path::is_absolute(dir) ? StringRef(D.SysRoot) : "";
+ addExternCSystemInclude(DriverArgs, CC1Args, Prefix + dir);
+ }
+ return;
+ }
+
+ addExternCSystemInclude(DriverArgs, CC1Args, D.SysRoot + "/include");
+}
+
+void Fuchsia::AddClangCXXStdlibIncludeArgs(const ArgList &DriverArgs,
+ ArgStringList &CC1Args) const {
+ if (DriverArgs.hasArg(options::OPT_nostdlibinc) ||
+ DriverArgs.hasArg(options::OPT_nostdincxx))
+ return;
+
+ addSystemInclude(DriverArgs, CC1Args,
+ getDriver().SysRoot + "/include/c++/v1");
+}
+
+void Fuchsia::AddCXXStdlibLibArgs(const ArgList &Args,
+ ArgStringList &CmdArgs) const {
+ (void) GetCXXStdlibType(Args);
+ CmdArgs.push_back("-lc++");
+ CmdArgs.push_back("-lc++abi");
+ CmdArgs.push_back("-lunwind");
+}
+
/// DragonFly - DragonFly tool chain which can call as(1) and ld(1) directly.
DragonFly::DragonFly(const Driver &D, const llvm::Triple &Triple,
diff --git a/clang/lib/Driver/ToolChains.h b/clang/lib/Driver/ToolChains.h
index 234a603..29de259 100644
--- a/clang/lib/Driver/ToolChains.h
+++ b/clang/lib/Driver/ToolChains.h
@@ -1008,6 +1008,39 @@
std::string NaClArmMacrosPath;
};
+class LLVM_LIBRARY_VISIBILITY Fuchsia : public Generic_ELF {
+public:
+ Fuchsia(const Driver &D, const llvm::Triple &Triple,
+ const llvm::opt::ArgList &Args);
+
+ bool isPIEDefault() const override { return true; }
+ bool HasNativeLLVMSupport() const override { return true; }
+ bool IsIntegratedAssemblerDefault() const override { return true; }
+ llvm::DebuggerKind getDefaultDebuggerTuning() const override {
+ return llvm::DebuggerKind::GDB;
+ }
+
+ RuntimeLibType
+ GetRuntimeLibType(const llvm::opt::ArgList &Args) const override;
+ CXXStdlibType
+ GetCXXStdlibType(const llvm::opt::ArgList &Args) const override;
+
+ void addClangTargetOptions(const llvm::opt::ArgList &DriverArgs,
+ llvm::opt::ArgStringList &CC1Args) const override;
+ void
+ AddClangSystemIncludeArgs(const llvm::opt::ArgList &DriverArgs,
+ llvm::opt::ArgStringList &CC1Args) const override;
+ void AddClangCXXStdlibIncludeArgs(
+ const llvm::opt::ArgList &DriverArgs,
+ llvm::opt::ArgStringList &CC1Args) const override;
+ void AddCXXStdlibLibArgs(const llvm::opt::ArgList &Args,
+ llvm::opt::ArgStringList &CmdArgs) const override;
+
+protected:
+ Tool *buildAssembler() const override;
+ Tool *buildLinker() const override;
+};
+
/// TCEToolChain - A tool chain using the llvm bitcode tools to perform
/// all subcommands. See http://tce.cs.tut.fi for our peculiar target.
class LLVM_LIBRARY_VISIBILITY TCEToolChain : public ToolChain {
diff --git a/clang/lib/Driver/Tools.cpp b/clang/lib/Driver/Tools.cpp
index 5138d75..983ec04 100644
--- a/clang/lib/Driver/Tools.cpp
+++ b/clang/lib/Driver/Tools.cpp
@@ -9493,6 +9493,7 @@
llvm_unreachable("unsupported OS");
case llvm::Triple::Win32:
case llvm::Triple::Linux:
+ case llvm::Triple::Fuchsia:
addClangRT(TC, Args, CmdArgs);
break;
}
@@ -9979,6 +9980,112 @@
C.addCommand(llvm::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));
}
+void fuchsia::Linker::ConstructJob(Compilation &C, const JobAction &JA,
+ const InputInfo &Output,
+ const InputInfoList &Inputs,
+ const ArgList &Args,
+ const char *LinkingOutput) const {
+ const toolchains::Fuchsia &ToolChain =
+ static_cast<const toolchains::Fuchsia &>(getToolChain());
+ const Driver &D = ToolChain.getDriver();
+
+ ArgStringList CmdArgs;
+
+ // Silence warning for "clang -g foo.o -o foo"
+ Args.ClaimAllArgs(options::OPT_g_Group);
+ // and "clang -emit-llvm foo.o -o foo"
+ Args.ClaimAllArgs(options::OPT_emit_llvm);
+ // and for "clang -w foo.o -o foo". Other warning options are already
+ // handled somewhere else.
+ Args.ClaimAllArgs(options::OPT_w);
+
+ const char *Exec = Args.MakeArgString(ToolChain.GetLinkerPath());
+ if (llvm::sys::path::filename(Exec).equals_lower("lld")) {
+ CmdArgs.push_back("-flavor");
+ CmdArgs.push_back("gnu");
+ }
+
+ if (!D.SysRoot.empty())
+ CmdArgs.push_back(Args.MakeArgString("--sysroot=" + D.SysRoot));
+
+ if (!Args.hasArg(options::OPT_shared) && !Args.hasArg(options::OPT_r))
+ CmdArgs.push_back("-pie");
+
+ if (Args.hasArg(options::OPT_rdynamic))
+ CmdArgs.push_back("-export-dynamic");
+
+ if (Args.hasArg(options::OPT_s))
+ CmdArgs.push_back("-s");
+
+ if (Args.hasArg(options::OPT_r))
+ CmdArgs.push_back("-r");
+ else
+ CmdArgs.push_back("--build-id");
+
+ if (!Args.hasArg(options::OPT_static))
+ CmdArgs.push_back("--eh-frame-hdr");
+
+ if (Args.hasArg(options::OPT_static))
+ CmdArgs.push_back("-Bstatic");
+ else if (Args.hasArg(options::OPT_shared))
+ CmdArgs.push_back("-shared");
+
+ if (!Args.hasArg(options::OPT_static)) {
+ if (Args.hasArg(options::OPT_rdynamic))
+ CmdArgs.push_back("-export-dynamic");
+
+ if (!Args.hasArg(options::OPT_shared)) {
+ CmdArgs.push_back("-dynamic-linker");
+ CmdArgs.push_back(Args.MakeArgString(D.DyldPrefix + "ld.so.1"));
+ }
+ }
+
+ CmdArgs.push_back("-o");
+ CmdArgs.push_back(Output.getFilename());
+
+ if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles)) {
+ if (!Args.hasArg(options::OPT_shared)) {
+ CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("Scrt1.o")));
+ }
+ }
+
+ Args.AddAllArgs(CmdArgs, options::OPT_L);
+ Args.AddAllArgs(CmdArgs, options::OPT_u);
+
+ ToolChain.AddFilePathLibArgs(Args, CmdArgs);
+
+ AddLinkerInputs(ToolChain, Inputs, Args, CmdArgs);
+
+ if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs)) {
+ if (Args.hasArg(options::OPT_static))
+ CmdArgs.push_back("-Bdynamic");
+
+ if (D.CCCIsCXX()) {
+ bool OnlyLibstdcxxStatic = Args.hasArg(options::OPT_static_libstdcxx) &&
+ !Args.hasArg(options::OPT_static);
+ if (OnlyLibstdcxxStatic)
+ CmdArgs.push_back("-Bstatic");
+ ToolChain.AddCXXStdlibLibArgs(Args, CmdArgs);
+ if (OnlyLibstdcxxStatic)
+ CmdArgs.push_back("-Bdynamic");
+ CmdArgs.push_back("-lm");
+ }
+
+ AddRunTimeLibs(ToolChain, D, CmdArgs, Args);
+
+ if (Args.hasArg(options::OPT_pthread) ||
+ Args.hasArg(options::OPT_pthreads))
+ CmdArgs.push_back("-lpthread");
+
+ if (Args.hasArg(options::OPT_fsplit_stack))
+ CmdArgs.push_back("--wrap=pthread_create");
+
+ CmdArgs.push_back("-lc");
+ }
+
+ C.addCommand(llvm::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));
+}
+
void minix::Assembler::ConstructJob(Compilation &C, const JobAction &JA,
const InputInfo &Output,
const InputInfoList &Inputs,
diff --git a/clang/lib/Driver/Tools.h b/clang/lib/Driver/Tools.h
index 6577ce9..724b829 100644
--- a/clang/lib/Driver/Tools.h
+++ b/clang/lib/Driver/Tools.h
@@ -596,6 +596,21 @@
};
} // end namespace nacltools
+namespace fuchsia {
+class LLVM_LIBRARY_VISIBILITY Linker : public GnuTool {
+public:
+ Linker(const ToolChain &TC) : GnuTool("fuchsia::Linker", "ld.lld", TC) {}
+
+ bool hasIntegratedCPP() const override { return false; }
+ bool isLinkJob() const override { return true; }
+
+ void ConstructJob(Compilation &C, const JobAction &JA,
+ const InputInfo &Output, const InputInfoList &Inputs,
+ const llvm::opt::ArgList &TCArgs,
+ const char *LinkingOutput) const override;
+};
+} // end namespace fuchsia
+
/// minix -- Directly call GNU Binutils assembler and linker
namespace minix {
class LLVM_LIBRARY_VISIBILITY Assembler : public GnuTool {