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
141 lines
4.8 KiB
C++
141 lines
4.8 KiB
C++
//===--- RISCVToolchain.cpp - RISCV 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 "RISCVToolchain.h"
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#include "CommonArgs.h"
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#include "InputInfo.h"
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#include "clang/Driver/Compilation.h"
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#include "clang/Driver/Options.h"
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#include "llvm/Option/ArgList.h"
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#include "llvm/Support/FileSystem.h"
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#include "llvm/Support/Path.h"
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#include "llvm/Support/raw_ostream.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::driver::tools;
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using namespace clang;
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using namespace llvm::opt;
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/// RISCV Toolchain
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RISCVToolChain::RISCVToolChain(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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GCCInstallation.init(Triple, Args);
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getFilePaths().push_back(computeSysRoot() + "/lib");
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if (GCCInstallation.isValid()) {
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getFilePaths().push_back(GCCInstallation.getInstallPath().str());
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getProgramPaths().push_back(
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(GCCInstallation.getParentLibPath() + "/../bin").str());
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}
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}
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Tool *RISCVToolChain::buildLinker() const {
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return new tools::RISCV::Linker(*this);
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}
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void RISCVToolChain::addClangTargetOptions(
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const llvm::opt::ArgList &DriverArgs,
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llvm::opt::ArgStringList &CC1Args,
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Action::OffloadKind) const {
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CC1Args.push_back("-nostdsysteminc");
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CC1Args.push_back("-fuse-init-array");
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}
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void RISCVToolChain::AddClangSystemIncludeArgs(const ArgList &DriverArgs,
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ArgStringList &CC1Args) const {
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if (DriverArgs.hasArg(options::OPT_nostdinc))
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return;
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if (!DriverArgs.hasArg(options::OPT_nostdlibinc)) {
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SmallString<128> Dir(computeSysRoot());
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llvm::sys::path::append(Dir, "include");
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addSystemInclude(DriverArgs, CC1Args, Dir.str());
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}
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}
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void RISCVToolChain::addLibStdCxxIncludePaths(
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const llvm::opt::ArgList &DriverArgs,
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llvm::opt::ArgStringList &CC1Args) const {
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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(computeSysRoot() + "/include/c++/" + Version.Text,
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"", TripleStr, "", "", Multilib.includeSuffix(), DriverArgs, CC1Args);
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}
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std::string RISCVToolChain::computeSysRoot() const {
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if (!getDriver().SysRoot.empty())
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return getDriver().SysRoot;
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if (!GCCInstallation.isValid())
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return std::string();
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StringRef LibDir = GCCInstallation.getParentLibPath();
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StringRef TripleStr = GCCInstallation.getTriple().str();
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std::string SysRootDir = LibDir.str() + "/../" + TripleStr.str();
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if (!llvm::sys::fs::exists(SysRootDir))
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return std::string();
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return SysRootDir;
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}
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void RISCV::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 ToolChain &ToolChain = getToolChain();
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const Driver &D = ToolChain.getDriver();
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ArgStringList CmdArgs;
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if (!D.SysRoot.empty())
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CmdArgs.push_back(Args.MakeArgString("--sysroot=" + D.SysRoot));
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std::string Linker = getToolChain().GetProgramPath(getShortName());
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bool WantCRTs =
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!Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles);
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if (WantCRTs) {
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CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crt0.o")));
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CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crtbegin.o")));
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}
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Args.AddAllArgs(CmdArgs, options::OPT_L);
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ToolChain.AddFilePathLibArgs(Args, CmdArgs);
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Args.AddAllArgs(CmdArgs,
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{options::OPT_T_Group, options::OPT_e, options::OPT_s,
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options::OPT_t, options::OPT_Z_Flag, options::OPT_r});
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AddLinkerInputs(ToolChain, Inputs, Args, CmdArgs, JA);
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// TODO: add C++ includes and libs if compiling C++.
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if (!Args.hasArg(options::OPT_nostdlib) &&
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!Args.hasArg(options::OPT_nodefaultlibs)) {
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if (ToolChain.ShouldLinkCXXStdlib(Args))
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ToolChain.AddCXXStdlibLibArgs(Args, CmdArgs);
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CmdArgs.push_back("--start-group");
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CmdArgs.push_back("-lc");
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CmdArgs.push_back("-lgloss");
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CmdArgs.push_back("--end-group");
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CmdArgs.push_back("-lgcc");
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}
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if (WantCRTs)
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CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crtend.o")));
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CmdArgs.push_back("-o");
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CmdArgs.push_back(Output.getFilename());
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C.addCommand(llvm::make_unique<Command>(JA, *this, Args.MakeArgString(Linker),
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CmdArgs, Inputs));
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}
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// RISCV tools end.
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