[Shave]: Drive sparc-myriad-elf-ld directly rather than via gcc.
Differential Revision: http://reviews.llvm.org/D12541
llvm-svn: 247924
diff --git a/clang/lib/Driver/Tools.cpp b/clang/lib/Driver/Tools.cpp
index 755ea1b..f8358cd 100644
--- a/clang/lib/Driver/Tools.cpp
+++ b/clang/lib/Driver/Tools.cpp
@@ -9736,3 +9736,81 @@
C.addCommand(llvm::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_nostartfiles);
+
+ std::string StartFilesDir, BuiltinLibDir;
+ TC.getCompilerSupportDir(StartFilesDir);
+ TC.getBuiltinLibDir(BuiltinLibDir);
+
+ 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(StartFilesDir + "/crti.o"));
+ CmdArgs.push_back(Args.MakeArgString(StartFilesDir + "/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});
+
+ // The linker doesn't use these builtin paths unless directed to,
+ // because it was not compiled for support with sysroots, nor does
+ // it have a default of little-endian with FPU.
+ CmdArgs.push_back(Args.MakeArgString("-L" + BuiltinLibDir));
+ CmdArgs.push_back(Args.MakeArgString("-L" + StartFilesDir));
+
+ AddLinkerInputs(getToolChain(), Inputs, Args, CmdArgs);
+
+ if (T.getOS() == llvm::Triple::RTEMS) {
+ CmdArgs.push_back("--start-group");
+ CmdArgs.push_back("-lc");
+ // 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");
+ }
+ if (C.getDriver().CCCIsCXX())
+ CmdArgs.push_back("-lstdc++");
+ CmdArgs.push_back("-lgcc");
+ if (UseStartfiles) {
+ CmdArgs.push_back(Args.MakeArgString(StartFilesDir + "/crtend.o"));
+ CmdArgs.push_back(Args.MakeArgString(StartFilesDir + "/crtn.o"));
+ }
+
+ std::string Exec =
+ Args.MakeArgString(TC.GetProgramPath("sparc-myriad-elf-ld"));
+ C.addCommand(llvm::make_unique<Command>(JA, *this, Args.MakeArgString(Exec),
+ CmdArgs, Inputs));
+}