//===--- XCore.cpp - XCore 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 "XCore.h"

#include "CommonArgs.h"

#include "clang/Driver/Compilation.h"

#include "clang/Driver/Driver.h"

#include "clang/Driver/Options.h"

#include "llvm/Option/ArgList.h"

#include <cstdlib> // ::getenv

using namespace clang::driver;

using namespace clang::driver::toolchains;

using namespace clang;

using namespace llvm::opt;

/// XCore Tools

// We pass assemble and link construction to the xcc tool.

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

                                           const InputInfo &Output,

                                           const InputInfoList &Inputs,

                                           const ArgList &Args,

                                           const char *LinkingOutput) const {

  claimNoWarnArgs(Args);

  ArgStringList CmdArgs;

  CmdArgs.push_back("-o");

  CmdArgs.push_back(Output.getFilename());

  CmdArgs.push_back("-c");

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

    CmdArgs.push_back("-v");

  if (Arg *A = Args.getLastArg(options::OPT_g_Group))

    if (!A->getOption().matches(options::OPT_g0))

      CmdArgs.push_back("-g");

  if (Args.hasFlag(options::OPT_fverbose_asm, options::OPT_fno_verbose_asm,

                   false))

    CmdArgs.push_back("-fverbose-asm");

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

  for (const auto &II : Inputs)

    CmdArgs.push_back(II.getFilename());

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

  C.addCommand(std::make_unique<Command>(JA, *this, ResponseFileSupport::None(),

                                         Exec, CmdArgs, Inputs, Output));

}

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

                                        const InputInfo &Output,

                                        const InputInfoList &Inputs,

                                        const ArgList &Args,

                                        const char *LinkingOutput) const {

  ArgStringList CmdArgs;

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

  if (Output.isFilename()) {

    CmdArgs.push_back("-o");

    CmdArgs.push_back(Output.getFilename());

  }

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

    CmdArgs.push_back("-v");

  // Pass -fexceptions through to the linker if it was present.

  if (Args.hasFlag(options::OPT_fexceptions, options::OPT_fno_exceptions,

                   false))

    CmdArgs.push_back("-fexceptions");

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

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

  C.addCommand(std::make_unique<Command>(JA, *this, ResponseFileSupport::None(),

                                         Exec, CmdArgs, Inputs, Output));

}

/// XCore tool chain

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

                               const ArgList &Args)

    : ToolChain(D, Triple, Args) {

  // ProgramPaths are found via 'PATH' environment variable.

}

Tool *XCoreToolChain::buildAssembler() const {

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

}

Tool *XCoreToolChain::buildLinker() const {

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

}

bool XCoreToolChain::isPICDefault() const { return false; }

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

  return false;

}

bool XCoreToolChain::isPICDefaultForced() const { return false; }

bool XCoreToolChain::SupportsProfiling() const { return false; }

bool XCoreToolChain::hasBlocksRuntime() const { return false; }

void XCoreToolChain::AddClangSystemIncludeArgs(const ArgList &DriverArgs,

                                               ArgStringList &CC1Args) const {

  if (DriverArgs.hasArg(clang::driver::options::OPT_nostdinc) ||

      DriverArgs.hasArg(options::OPT_nostdlibinc))

    return;

  if (const char *cl_include_dir = getenv("XCC_C_INCLUDE_PATH")) {

    SmallVector<StringRef, 4> Dirs;

    const char EnvPathSeparatorStr[] = {llvm::sys::EnvPathSeparator, '\0'};

    StringRef(cl_include_dir).split(Dirs, StringRef(EnvPathSeparatorStr));

    ArrayRef<StringRef> DirVec(Dirs);

    addSystemIncludes(DriverArgs, CC1Args, DirVec);

  }

}

void XCoreToolChain::addClangTargetOptions(const ArgList &DriverArgs,

                                           ArgStringList &CC1Args,

                                           Action::OffloadKind) const {

  CC1Args.push_back("-nostdsysteminc");

  // Set `-fno-use-cxa-atexit` to default.

  if (!DriverArgs.hasFlag(options::OPT_fuse_cxa_atexit,

                          options::OPT_fno_use_cxa_atexit, false))

    CC1Args.push_back("-fno-use-cxa-atexit");

}

void XCoreToolChain::AddClangCXXStdlibIncludeArgs(

    const ArgList &DriverArgs, ArgStringList &CC1Args) const {

  if (DriverArgs.hasArg(clang::driver::options::OPT_nostdinc) ||

      DriverArgs.hasArg(options::OPT_nostdlibinc) ||

      DriverArgs.hasArg(options::OPT_nostdincxx))

    return;

  if (const char *cl_include_dir = getenv("XCC_CPLUS_INCLUDE_PATH")) {

    SmallVector<StringRef, 4> Dirs;

    const char EnvPathSeparatorStr[] = {llvm::sys::EnvPathSeparator, '\0'};

    StringRef(cl_include_dir).split(Dirs, StringRef(EnvPathSeparatorStr));

    ArrayRef<StringRef> DirVec(Dirs);

    addSystemIncludes(DriverArgs, CC1Args, DirVec);

  }

}

void XCoreToolChain::AddCXXStdlibLibArgs(const ArgList &Args,

                                         ArgStringList &CmdArgs) const {

  // We don't output any lib args. This is handled by xcc.

}