//===--- BareMetal.h - Bare Metal Tool and ToolChain ------------*- 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

//

//===----------------------------------------------------------------------===//

#ifndef LLVM_CLANG_LIB_DRIVER_TOOLCHAINS_BAREMETAL_H

#define LLVM_CLANG_LIB_DRIVER_TOOLCHAINS_BAREMETAL_H

#include "clang/Driver/Tool.h"

#include "clang/Driver/ToolChain.h"

#include <string>

namespace clang {

namespace driver {

namespace toolchains {

class LLVM_LIBRARY_VISIBILITY BareMetal : public ToolChain {

public:

  BareMetal(const Driver &D, const llvm::Triple &Triple,

            const llvm::opt::ArgList &Args);

  ~BareMetal() override = default;

  static bool handlesTarget(const llvm::Triple &Triple);

  void findMultilibs(const Driver &D, const llvm::Triple &Triple,

                     const llvm::opt::ArgList &Args);

protected:

  Tool *buildLinker() const override;

  Tool *buildStaticLibTool() const override;

public:

  bool useIntegratedAs() const override { return true; }

  bool isBareMetal() const override { return true; }

  bool isCrossCompiling() const override { return true; }

  bool HasNativeLLVMSupport() const override { return true; }

  bool isPICDefault() const override { return false; }

  bool isPIEDefault(const llvm::opt::ArgList &Args) const override {

    return false;

  }

  bool isPICDefaultForced() const override { return false; }

  bool SupportsProfiling() const override { return false; }

  StringRef getOSLibName() const override { return "baremetal"; }

  RuntimeLibType GetDefaultRuntimeLibType() const override {

    return ToolChain::RLT_CompilerRT;

  }

  CXXStdlibType GetDefaultCXXStdlibType() const override {

    return ToolChain::CST_Libcxx;

  }

  const char *getDefaultLinker() const override { return "ld.lld"; }

  void

  AddClangSystemIncludeArgs(const llvm::opt::ArgList &DriverArgs,

                            llvm::opt::ArgStringList &CC1Args) const override;

  void

  addClangTargetOptions(const llvm::opt::ArgList &DriverArgs,

                        llvm::opt::ArgStringList &CC1Args,

                        Action::OffloadKind DeviceOffloadKind) 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;

  void AddLinkRuntimeLib(const llvm::opt::ArgList &Args,

                         llvm::opt::ArgStringList &CmdArgs) const;

  std::string computeSysRoot() const override;

private:

  using OrderedMultilibs =

      llvm::iterator_range<llvm::SmallVector<Multilib>::const_reverse_iterator>;

  OrderedMultilibs getOrderedMultilibs() const;

};

} // namespace toolchains

namespace tools {

namespace baremetal {

class LLVM_LIBRARY_VISIBILITY StaticLibTool : public Tool {

public:

  StaticLibTool(const ToolChain &TC)

      : Tool("baremetal::StaticLibTool", "llvm-ar", 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;

};

class LLVM_LIBRARY_VISIBILITY Linker : public Tool {

public:

  Linker(const ToolChain &TC) : Tool("baremetal::Linker", "ld.lld", TC) {}

  bool isLinkJob() const override { return true; }

  bool hasIntegratedCPP() const override { return false; }

  void ConstructJob(Compilation &C, const JobAction &JA,

                    const InputInfo &Output, const InputInfoList &Inputs,

                    const llvm::opt::ArgList &TCArgs,

                    const char *LinkingOutput) const override;

};

} // namespace baremetal

} // namespace tools

} // namespace driver

} // namespace clang

#endif