//===--- Minix.cpp - Minix ToolChain Implementations ------------*- 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

//

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

#include "Minix.h"

#include "CommonArgs.h"

#include "clang/Driver/Compilation.h"

#include "clang/Driver/Driver.h"

#include "clang/Driver/InputInfo.h"

#include "clang/Driver/Options.h"

#include "llvm/Option/ArgList.h"

#include "llvm/Support/VirtualFileSystem.h"

using namespace clang::driver;

using namespace clang;

using namespace llvm::opt;

void tools::minix::Assembler::ConstructJob(Compilation &C, const JobAction &JA,

                                           const InputInfo &Output,

                                           const InputInfoList &Inputs,

                                           const ArgList &Args,

                                           const char *LinkingOutput) const {

  claimNoWarnArgs(Args);

  ArgStringList CmdArgs;

  Args.AddAllArgValues(CmdArgs, options::OPT_Wa_COMMA, options::OPT_Xassembler);

  CmdArgs.push_back("-o");

  CmdArgs.push_back(Output.getFilename());

  for (const auto &II : Inputs)

    CmdArgs.push_back(II.getFilename());

  const char *Exec = Args.MakeArgString(getToolChain().GetProgramPath("as"));

  C.addCommand(std::make_unique<Command>(JA, *this,

                                         ResponseFileSupport::AtFileCurCP(),

                                         Exec, CmdArgs, Inputs, Output));

}

void tools::minix::Linker::ConstructJob(Compilation &C, const JobAction &JA,

                                 const InputInfo &Output,

                                 const InputInfoList &Inputs,

                                 const ArgList &Args,

                                 const char *LinkingOutput) const {

  const Driver &D = getToolChain().getDriver();

  ArgStringList CmdArgs;

  if (Output.isFilename()) {

    CmdArgs.push_back("-o");

    CmdArgs.push_back(Output.getFilename());

  } else {

    assert(Output.isNothing() && "Invalid output.");

  }

  if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles,

                   options::OPT_r)) {

    CmdArgs.push_back(Args.MakeArgString(getToolChain().GetFilePath("crt1.o")));

    CmdArgs.push_back(Args.MakeArgString(getToolChain().GetFilePath("crti.o")));

    CmdArgs.push_back(

        Args.MakeArgString(getToolChain().GetFilePath("crtbegin.o")));

    CmdArgs.push_back(Args.MakeArgString(getToolChain().GetFilePath("crtn.o")));

  }

  Args.AddAllArgs(CmdArgs,

                  {options::OPT_L, options::OPT_T_Group, options::OPT_e});

  AddLinkerInputs(getToolChain(), Inputs, Args, CmdArgs, JA);

  getToolChain().addProfileRTLibs(Args, CmdArgs);

  if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs,

                   options::OPT_r)) {

    if (D.CCCIsCXX()) {

      if (getToolChain().ShouldLinkCXXStdlib(Args))

        getToolChain().AddCXXStdlibLibArgs(Args, CmdArgs);

      CmdArgs.push_back("-lm");

    }

  }

  if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles,

                   options::OPT_r)) {

    if (Args.hasArg(options::OPT_pthread))

      CmdArgs.push_back("-lpthread");

    CmdArgs.push_back("-lc");

    CmdArgs.push_back("-lCompilerRT-Generic");

    CmdArgs.push_back("-L/usr/pkg/compiler-rt/lib");

    CmdArgs.push_back(

        Args.MakeArgString(getToolChain().GetFilePath("crtend.o")));

  }

  const char *Exec = Args.MakeArgString(getToolChain().GetLinkerPath());

  C.addCommand(std::make_unique<Command>(JA, *this,

                                         ResponseFileSupport::AtFileCurCP(),

                                         Exec, CmdArgs, Inputs, Output));

}

/// Minix - Minix tool chain which can call as(1) and ld(1) directly.

toolchains::Minix::Minix(const Driver &D, const llvm::Triple &Triple,

                         const ArgList &Args)

    : Generic_ELF(D, Triple, Args) {

  getFilePaths().push_back(getDriver().Dir + "/../lib");

  getFilePaths().push_back("/usr/lib");

}

Tool *toolchains::Minix::buildAssembler() const {

  return new tools::minix::Assembler(*this);

}

Tool *toolchains::Minix::buildLinker() const {

  return new tools::minix::Linker(*this);

}