2946cd7010
to reflect the new license. We understand that people may be surprised that we're moving the header entirely to discuss the new license. We checked this carefully with the Foundation's lawyer and we believe this is the correct approach. Essentially, all code in the project is now made available by the LLVM project under our new license, so you will see that the license headers include that license only. Some of our contributors have contributed code under our old license, and accordingly, we have retained a copy of our old license notice in the top-level files in each project and repository. llvm-svn: 351636
291 lines
12 KiB
C++
291 lines
12 KiB
C++
//===--- Myriad.cpp - Myriad ToolChain Implementations ----------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "Myriad.h"
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#include "CommonArgs.h"
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#include "clang/Driver/Compilation.h"
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#include "clang/Driver/Driver.h"
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#include "clang/Driver/DriverDiagnostic.h"
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#include "clang/Driver/Options.h"
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#include "llvm/Option/ArgList.h"
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using namespace clang::driver;
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using namespace clang::driver::toolchains;
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using namespace clang;
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using namespace llvm::opt;
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using tools::addPathIfExists;
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void tools::SHAVE::Compiler::ConstructJob(Compilation &C, const JobAction &JA,
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const InputInfo &Output,
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const InputInfoList &Inputs,
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const ArgList &Args,
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const char *LinkingOutput) const {
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ArgStringList CmdArgs;
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assert(Inputs.size() == 1);
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const InputInfo &II = Inputs[0];
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assert(II.getType() == types::TY_C || II.getType() == types::TY_CXX ||
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II.getType() == types::TY_PP_CXX);
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if (JA.getKind() == Action::PreprocessJobClass) {
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Args.ClaimAllArgs();
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CmdArgs.push_back("-E");
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} else {
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assert(Output.getType() == types::TY_PP_Asm); // Require preprocessed asm.
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CmdArgs.push_back("-S");
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CmdArgs.push_back("-fno-exceptions"); // Always do this even if unspecified.
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}
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CmdArgs.push_back("-DMYRIAD2");
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// Append all -I, -iquote, -isystem paths, defines/undefines, 'f'
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// flags, 'g' flags, 'M' flags, optimize flags, warning options,
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// mcpu flags, mllvm flags, and Xclang flags.
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// These are spelled the same way in clang and moviCompile.
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Args.AddAllArgsExcept(
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CmdArgs,
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{options::OPT_I_Group, options::OPT_clang_i_Group, options::OPT_std_EQ,
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options::OPT_D, options::OPT_U, options::OPT_f_Group,
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options::OPT_f_clang_Group, options::OPT_g_Group, options::OPT_M_Group,
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options::OPT_O_Group, options::OPT_W_Group, options::OPT_mcpu_EQ,
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options::OPT_mllvm, options::OPT_Xclang},
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{options::OPT_fno_split_dwarf_inlining});
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Args.hasArg(options::OPT_fno_split_dwarf_inlining); // Claim it if present.
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// If we're producing a dependency file, and assembly is the final action,
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// then the name of the target in the dependency file should be the '.o'
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// file, not the '.s' file produced by this step. For example, instead of
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// /tmp/mumble.s: mumble.c .../someheader.h
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// the filename on the lefthand side should be "mumble.o"
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if (Args.getLastArg(options::OPT_MF) && !Args.getLastArg(options::OPT_MT) &&
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C.getActions().size() == 1 &&
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C.getActions()[0]->getKind() == Action::AssembleJobClass) {
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Arg *A = Args.getLastArg(options::OPT_o);
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if (A) {
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CmdArgs.push_back("-MT");
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CmdArgs.push_back(Args.MakeArgString(A->getValue()));
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}
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}
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CmdArgs.push_back(II.getFilename());
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CmdArgs.push_back("-o");
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CmdArgs.push_back(Output.getFilename());
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std::string Exec =
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Args.MakeArgString(getToolChain().GetProgramPath("moviCompile"));
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C.addCommand(llvm::make_unique<Command>(JA, *this, Args.MakeArgString(Exec),
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CmdArgs, Inputs));
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}
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void tools::SHAVE::Assembler::ConstructJob(Compilation &C, const JobAction &JA,
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const InputInfo &Output,
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const InputInfoList &Inputs,
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const ArgList &Args,
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const char *LinkingOutput) const {
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ArgStringList CmdArgs;
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assert(Inputs.size() == 1);
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const InputInfo &II = Inputs[0];
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assert(II.getType() == types::TY_PP_Asm); // Require preprocessed asm input.
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assert(Output.getType() == types::TY_Object);
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CmdArgs.push_back("-no6thSlotCompression");
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const Arg *CPUArg = Args.getLastArg(options::OPT_mcpu_EQ);
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if (CPUArg)
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CmdArgs.push_back(
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Args.MakeArgString("-cv:" + StringRef(CPUArg->getValue())));
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CmdArgs.push_back("-noSPrefixing");
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CmdArgs.push_back("-a"); // Mystery option.
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Args.AddAllArgValues(CmdArgs, options::OPT_Wa_COMMA, options::OPT_Xassembler);
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for (const Arg *A : Args.filtered(options::OPT_I, options::OPT_isystem)) {
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A->claim();
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CmdArgs.push_back(
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Args.MakeArgString(std::string("-i:") + A->getValue(0)));
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}
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CmdArgs.push_back(II.getFilename());
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CmdArgs.push_back(
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Args.MakeArgString(std::string("-o:") + Output.getFilename()));
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std::string Exec =
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Args.MakeArgString(getToolChain().GetProgramPath("moviAsm"));
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C.addCommand(llvm::make_unique<Command>(JA, *this, Args.MakeArgString(Exec),
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CmdArgs, Inputs));
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}
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void tools::Myriad::Linker::ConstructJob(Compilation &C, const JobAction &JA,
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const InputInfo &Output,
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const InputInfoList &Inputs,
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const ArgList &Args,
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const char *LinkingOutput) const {
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const auto &TC =
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static_cast<const toolchains::MyriadToolChain &>(getToolChain());
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const llvm::Triple &T = TC.getTriple();
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ArgStringList CmdArgs;
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bool UseStartfiles =
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!Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles);
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bool UseDefaultLibs =
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!Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs);
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// Silence warning if the args contain both -nostdlib and -stdlib=.
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Args.getLastArg(options::OPT_stdlib_EQ);
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if (T.getArch() == llvm::Triple::sparc)
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CmdArgs.push_back("-EB");
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else // SHAVE assumes little-endian, and sparcel is expressly so.
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CmdArgs.push_back("-EL");
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// The remaining logic is mostly like gnutools::Linker::ConstructJob,
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// but we never pass through a --sysroot option and various other bits.
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// For example, there are no sanitizers (yet) nor gold linker.
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// Eat some arguments that may be present but have no effect.
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Args.ClaimAllArgs(options::OPT_g_Group);
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Args.ClaimAllArgs(options::OPT_w);
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Args.ClaimAllArgs(options::OPT_static_libgcc);
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if (Args.hasArg(options::OPT_s)) // Pass the 'strip' option.
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CmdArgs.push_back("-s");
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CmdArgs.push_back("-o");
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CmdArgs.push_back(Output.getFilename());
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if (UseStartfiles) {
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// If you want startfiles, it means you want the builtin crti and crtbegin,
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// but not crt0. Myriad link commands provide their own crt0.o as needed.
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CmdArgs.push_back(Args.MakeArgString(TC.GetFilePath("crti.o")));
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CmdArgs.push_back(Args.MakeArgString(TC.GetFilePath("crtbegin.o")));
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}
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Args.AddAllArgs(CmdArgs, {options::OPT_L, options::OPT_T_Group,
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options::OPT_e, options::OPT_s, options::OPT_t,
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options::OPT_Z_Flag, options::OPT_r});
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TC.AddFilePathLibArgs(Args, CmdArgs);
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bool NeedsSanitizerDeps = addSanitizerRuntimes(TC, Args, CmdArgs);
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AddLinkerInputs(getToolChain(), Inputs, Args, CmdArgs, JA);
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if (UseDefaultLibs) {
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if (NeedsSanitizerDeps)
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linkSanitizerRuntimeDeps(TC, CmdArgs);
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if (C.getDriver().CCCIsCXX()) {
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if (TC.GetCXXStdlibType(Args) == ToolChain::CST_Libcxx) {
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CmdArgs.push_back("-lc++");
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CmdArgs.push_back("-lc++abi");
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} else
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CmdArgs.push_back("-lstdc++");
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}
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if (T.getOS() == llvm::Triple::RTEMS) {
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CmdArgs.push_back("--start-group");
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CmdArgs.push_back("-lc");
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CmdArgs.push_back("-lgcc"); // circularly dependent on rtems
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// You must provide your own "-L" option to enable finding these.
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CmdArgs.push_back("-lrtemscpu");
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CmdArgs.push_back("-lrtemsbsp");
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CmdArgs.push_back("--end-group");
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} else {
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CmdArgs.push_back("-lc");
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CmdArgs.push_back("-lgcc");
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}
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}
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if (UseStartfiles) {
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CmdArgs.push_back(Args.MakeArgString(TC.GetFilePath("crtend.o")));
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CmdArgs.push_back(Args.MakeArgString(TC.GetFilePath("crtn.o")));
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}
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std::string Exec =
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Args.MakeArgString(TC.GetProgramPath("sparc-myriad-rtems-ld"));
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C.addCommand(llvm::make_unique<Command>(JA, *this, Args.MakeArgString(Exec),
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CmdArgs, Inputs));
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}
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MyriadToolChain::MyriadToolChain(const Driver &D, const llvm::Triple &Triple,
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const ArgList &Args)
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: Generic_ELF(D, Triple, Args) {
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// If a target of 'sparc-myriad-elf' is specified to clang, it wants to use
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// 'sparc-myriad--elf' (note the unknown OS) as the canonical triple.
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// This won't work to find gcc. Instead we give the installation detector an
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// extra triple, which is preferable to further hacks of the logic that at
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// present is based solely on getArch(). In particular, it would be wrong to
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// choose the myriad installation when targeting a non-myriad sparc install.
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switch (Triple.getArch()) {
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default:
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D.Diag(clang::diag::err_target_unsupported_arch)
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<< Triple.getArchName() << "myriad";
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LLVM_FALLTHROUGH;
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case llvm::Triple::shave:
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return;
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case llvm::Triple::sparc:
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case llvm::Triple::sparcel:
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GCCInstallation.init(Triple, Args, {"sparc-myriad-rtems"});
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}
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if (GCCInstallation.isValid()) {
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// This directory contains crt{i,n,begin,end}.o as well as libgcc.
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// These files are tied to a particular version of gcc.
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SmallString<128> CompilerSupportDir(GCCInstallation.getInstallPath());
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addPathIfExists(D, CompilerSupportDir, getFilePaths());
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}
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// libstd++ and libc++ must both be found in this one place.
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addPathIfExists(D, D.Dir + "/../sparc-myriad-rtems/lib", getFilePaths());
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}
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MyriadToolChain::~MyriadToolChain() {}
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void MyriadToolChain::AddClangSystemIncludeArgs(const ArgList &DriverArgs,
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ArgStringList &CC1Args) const {
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if (!DriverArgs.hasArg(clang::driver::options::OPT_nostdinc))
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addSystemInclude(DriverArgs, CC1Args, getDriver().SysRoot + "/include");
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}
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void MyriadToolChain::addLibCxxIncludePaths(
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const llvm::opt::ArgList &DriverArgs,
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llvm::opt::ArgStringList &CC1Args) const {
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std::string Path(getDriver().getInstalledDir());
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addSystemInclude(DriverArgs, CC1Args, Path + "/../include/c++/v1");
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}
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void MyriadToolChain::addLibStdCxxIncludePaths(
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const llvm::opt::ArgList &DriverArgs,
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llvm::opt::ArgStringList &CC1Args) const {
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StringRef LibDir = GCCInstallation.getParentLibPath();
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const GCCVersion &Version = GCCInstallation.getVersion();
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StringRef TripleStr = GCCInstallation.getTriple().str();
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const Multilib &Multilib = GCCInstallation.getMultilib();
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addLibStdCXXIncludePaths(
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LibDir.str() + "/../" + TripleStr.str() + "/include/c++/" + Version.Text,
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"", TripleStr, "", "", Multilib.includeSuffix(), DriverArgs, CC1Args);
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}
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// MyriadToolChain handles several triples:
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// {shave,sparc{,el}}-myriad-{rtems,unknown}-elf
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Tool *MyriadToolChain::SelectTool(const JobAction &JA) const {
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// The inherited method works fine if not targeting the SHAVE.
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if (!isShaveCompilation(getTriple()))
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return ToolChain::SelectTool(JA);
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switch (JA.getKind()) {
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case Action::PreprocessJobClass:
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case Action::CompileJobClass:
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if (!Compiler)
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Compiler.reset(new tools::SHAVE::Compiler(*this));
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return Compiler.get();
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case Action::AssembleJobClass:
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if (!Assembler)
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Assembler.reset(new tools::SHAVE::Assembler(*this));
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return Assembler.get();
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default:
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return ToolChain::getTool(JA.getKind());
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}
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}
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Tool *MyriadToolChain::buildLinker() const {
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return new tools::Myriad::Linker(*this);
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}
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SanitizerMask MyriadToolChain::getSupportedSanitizers() const {
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return SanitizerKind::Address;
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}
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