e449e1dff9
This matches OpenBSD and FreeBSD. https://reviews.llvm.org/D138183 Reviewed By: MaskRay Differential Revision: https://reviews.llvm.org/D140817
556 lines
18 KiB
C++
556 lines
18 KiB
C++
//===--- NetBSD.cpp - NetBSD 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 "NetBSD.h"
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#include "Arch/ARM.h"
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#include "Arch/Mips.h"
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#include "Arch/Sparc.h"
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#include "CommonArgs.h"
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#include "clang/Config/config.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/Options.h"
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#include "clang/Driver/SanitizerArgs.h"
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#include "llvm/Option/ArgList.h"
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#include "llvm/Support/VirtualFileSystem.h"
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using namespace clang::driver;
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using namespace clang::driver::tools;
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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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void netbsd::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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const toolchains::NetBSD &ToolChain =
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static_cast<const toolchains::NetBSD &>(getToolChain());
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const Driver &D = ToolChain.getDriver();
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const llvm::Triple &Triple = ToolChain.getTriple();
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claimNoWarnArgs(Args);
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ArgStringList CmdArgs;
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// GNU as needs different flags for creating the correct output format
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// on architectures with different ABIs or optional feature sets.
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switch (ToolChain.getArch()) {
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case llvm::Triple::x86:
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CmdArgs.push_back("--32");
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break;
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case llvm::Triple::arm:
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case llvm::Triple::armeb:
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case llvm::Triple::thumb:
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case llvm::Triple::thumbeb: {
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StringRef MArch, MCPU;
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arm::getARMArchCPUFromArgs(Args, MArch, MCPU, /*FromAs*/ true);
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std::string Arch = arm::getARMTargetCPU(MCPU, MArch, Triple);
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CmdArgs.push_back(Args.MakeArgString("-mcpu=" + Arch));
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break;
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}
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case llvm::Triple::mips:
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case llvm::Triple::mipsel:
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case llvm::Triple::mips64:
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case llvm::Triple::mips64el: {
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StringRef CPUName;
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StringRef ABIName;
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mips::getMipsCPUAndABI(Args, Triple, CPUName, ABIName);
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CmdArgs.push_back("-march");
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CmdArgs.push_back(CPUName.data());
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CmdArgs.push_back("-mabi");
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CmdArgs.push_back(mips::getGnuCompatibleMipsABIName(ABIName).data());
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if (Triple.isLittleEndian())
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CmdArgs.push_back("-EL");
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else
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CmdArgs.push_back("-EB");
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AddAssemblerKPIC(ToolChain, Args, CmdArgs);
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break;
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}
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case llvm::Triple::sparc:
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case llvm::Triple::sparcel: {
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CmdArgs.push_back("-32");
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std::string CPU = getCPUName(D, Args, Triple);
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CmdArgs.push_back(sparc::getSparcAsmModeForCPU(CPU, Triple));
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AddAssemblerKPIC(ToolChain, Args, CmdArgs);
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break;
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}
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case llvm::Triple::sparcv9: {
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CmdArgs.push_back("-64");
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std::string CPU = getCPUName(D, Args, Triple);
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CmdArgs.push_back(sparc::getSparcAsmModeForCPU(CPU, Triple));
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AddAssemblerKPIC(ToolChain, Args, CmdArgs);
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break;
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}
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default:
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break;
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}
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Args.AddAllArgValues(CmdArgs, options::OPT_Wa_COMMA, options::OPT_Xassembler);
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CmdArgs.push_back("-o");
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CmdArgs.push_back(Output.getFilename());
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for (const auto &II : Inputs)
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CmdArgs.push_back(II.getFilename());
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const char *Exec = Args.MakeArgString((ToolChain.GetProgramPath("as")));
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C.addCommand(std::make_unique<Command>(JA, *this,
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ResponseFileSupport::AtFileCurCP(),
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Exec, CmdArgs, Inputs, Output));
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}
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void netbsd::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 toolchains::NetBSD &ToolChain =
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static_cast<const toolchains::NetBSD &>(getToolChain());
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const Driver &D = ToolChain.getDriver();
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const llvm::Triple &Triple = ToolChain.getTriple();
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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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CmdArgs.push_back("--eh-frame-hdr");
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if (Args.hasArg(options::OPT_static)) {
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CmdArgs.push_back("-Bstatic");
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if (Args.hasArg(options::OPT_pie)) {
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Args.AddAllArgs(CmdArgs, options::OPT_pie);
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CmdArgs.push_back("--no-dynamic-linker");
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}
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} else {
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if (Args.hasArg(options::OPT_rdynamic))
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CmdArgs.push_back("-export-dynamic");
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if (Args.hasArg(options::OPT_shared)) {
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CmdArgs.push_back("-Bshareable");
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} else if (!Args.hasArg(options::OPT_r)) {
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Args.AddAllArgs(CmdArgs, options::OPT_pie);
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CmdArgs.push_back("-dynamic-linker");
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CmdArgs.push_back("/libexec/ld.elf_so");
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}
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}
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// Many NetBSD architectures support more than one ABI.
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// Determine the correct emulation for ld.
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switch (ToolChain.getArch()) {
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case llvm::Triple::x86:
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CmdArgs.push_back("-m");
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CmdArgs.push_back("elf_i386");
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break;
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case llvm::Triple::arm:
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case llvm::Triple::thumb:
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CmdArgs.push_back("-m");
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switch (Triple.getEnvironment()) {
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case llvm::Triple::EABI:
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case llvm::Triple::GNUEABI:
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CmdArgs.push_back("armelf_nbsd_eabi");
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break;
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case llvm::Triple::EABIHF:
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case llvm::Triple::GNUEABIHF:
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CmdArgs.push_back("armelf_nbsd_eabihf");
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break;
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default:
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CmdArgs.push_back("armelf_nbsd");
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break;
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}
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break;
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case llvm::Triple::armeb:
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case llvm::Triple::thumbeb:
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arm::appendBE8LinkFlag(Args, CmdArgs, ToolChain.getEffectiveTriple());
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CmdArgs.push_back("-m");
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switch (Triple.getEnvironment()) {
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case llvm::Triple::EABI:
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case llvm::Triple::GNUEABI:
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CmdArgs.push_back("armelfb_nbsd_eabi");
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break;
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case llvm::Triple::EABIHF:
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case llvm::Triple::GNUEABIHF:
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CmdArgs.push_back("armelfb_nbsd_eabihf");
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break;
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default:
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CmdArgs.push_back("armelfb_nbsd");
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break;
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}
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break;
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case llvm::Triple::mips64:
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case llvm::Triple::mips64el:
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if (mips::hasMipsAbiArg(Args, "32")) {
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CmdArgs.push_back("-m");
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if (ToolChain.getArch() == llvm::Triple::mips64)
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CmdArgs.push_back("elf32btsmip");
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else
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CmdArgs.push_back("elf32ltsmip");
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} else if (mips::hasMipsAbiArg(Args, "64")) {
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CmdArgs.push_back("-m");
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if (ToolChain.getArch() == llvm::Triple::mips64)
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CmdArgs.push_back("elf64btsmip");
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else
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CmdArgs.push_back("elf64ltsmip");
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}
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break;
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case llvm::Triple::ppc:
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CmdArgs.push_back("-m");
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CmdArgs.push_back("elf32ppc_nbsd");
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break;
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case llvm::Triple::ppc64:
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case llvm::Triple::ppc64le:
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CmdArgs.push_back("-m");
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CmdArgs.push_back("elf64ppc");
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break;
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case llvm::Triple::sparc:
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CmdArgs.push_back("-m");
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CmdArgs.push_back("elf32_sparc");
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break;
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case llvm::Triple::sparcv9:
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CmdArgs.push_back("-m");
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CmdArgs.push_back("elf64_sparc");
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break;
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default:
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break;
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}
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if (Output.isFilename()) {
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CmdArgs.push_back("-o");
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CmdArgs.push_back(Output.getFilename());
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} else {
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assert(Output.isNothing() && "Invalid output.");
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}
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if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles,
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options::OPT_r)) {
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if (!Args.hasArg(options::OPT_shared)) {
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CmdArgs.push_back(
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Args.MakeArgString(ToolChain.GetFilePath("crt0.o")));
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}
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CmdArgs.push_back(
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Args.MakeArgString(ToolChain.GetFilePath("crti.o")));
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if (Args.hasArg(options::OPT_shared) || Args.hasArg(options::OPT_pie)) {
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CmdArgs.push_back(
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Args.MakeArgString(ToolChain.GetFilePath("crtbeginS.o")));
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} else {
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CmdArgs.push_back(
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Args.MakeArgString(ToolChain.GetFilePath("crtbegin.o")));
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}
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}
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Args.AddAllArgs(CmdArgs, options::OPT_L);
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Args.AddAllArgs(CmdArgs, options::OPT_T_Group);
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Args.AddAllArgs(CmdArgs, options::OPT_e);
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Args.AddAllArgs(CmdArgs, options::OPT_s);
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Args.AddAllArgs(CmdArgs, options::OPT_t);
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Args.AddAllArgs(CmdArgs, options::OPT_Z_Flag);
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Args.AddAllArgs(CmdArgs, options::OPT_r);
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bool NeedsSanitizerDeps = addSanitizerRuntimes(ToolChain, Args, CmdArgs);
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bool NeedsXRayDeps = addXRayRuntime(ToolChain, Args, CmdArgs);
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AddLinkerInputs(ToolChain, Inputs, Args, CmdArgs, JA);
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const SanitizerArgs &SanArgs = ToolChain.getSanitizerArgs(Args);
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if (SanArgs.needsSharedRt()) {
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CmdArgs.push_back("-rpath");
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CmdArgs.push_back(Args.MakeArgString(ToolChain.getCompilerRTPath()));
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}
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VersionTuple OsVersion = Triple.getOSVersion();
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bool useLibgcc = true;
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if (OsVersion >= VersionTuple(7) || OsVersion.getMajor() == 0) {
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switch (ToolChain.getArch()) {
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case llvm::Triple::aarch64:
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case llvm::Triple::aarch64_be:
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case llvm::Triple::arm:
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case llvm::Triple::armeb:
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case llvm::Triple::thumb:
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case llvm::Triple::thumbeb:
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case llvm::Triple::ppc:
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case llvm::Triple::ppc64:
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case llvm::Triple::ppc64le:
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case llvm::Triple::sparc:
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case llvm::Triple::sparcv9:
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case llvm::Triple::x86:
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case llvm::Triple::x86_64:
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useLibgcc = false;
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break;
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default:
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break;
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}
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}
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if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs,
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options::OPT_r)) {
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// Use the static OpenMP runtime with -static-openmp
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bool StaticOpenMP = Args.hasArg(options::OPT_static_openmp) &&
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!Args.hasArg(options::OPT_static);
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addOpenMPRuntime(CmdArgs, ToolChain, Args, StaticOpenMP);
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if (D.CCCIsCXX()) {
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if (ToolChain.ShouldLinkCXXStdlib(Args))
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ToolChain.AddCXXStdlibLibArgs(Args, CmdArgs);
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CmdArgs.push_back("-lm");
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}
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if (NeedsSanitizerDeps)
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linkSanitizerRuntimeDeps(ToolChain, CmdArgs);
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if (NeedsXRayDeps)
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linkXRayRuntimeDeps(ToolChain, CmdArgs);
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if (Args.hasArg(options::OPT_pthread))
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CmdArgs.push_back("-lpthread");
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CmdArgs.push_back("-lc");
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if (useLibgcc) {
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if (Args.hasArg(options::OPT_static)) {
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// libgcc_eh depends on libc, so resolve as much as possible,
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// pull in any new requirements from libc and then get the rest
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// of libgcc.
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CmdArgs.push_back("-lgcc_eh");
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CmdArgs.push_back("-lc");
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CmdArgs.push_back("-lgcc");
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} else {
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CmdArgs.push_back("-lgcc");
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CmdArgs.push_back("--as-needed");
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CmdArgs.push_back("-lgcc_s");
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CmdArgs.push_back("--no-as-needed");
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}
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}
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}
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if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles,
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options::OPT_r)) {
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if (Args.hasArg(options::OPT_shared) || Args.hasArg(options::OPT_pie))
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CmdArgs.push_back(
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Args.MakeArgString(ToolChain.GetFilePath("crtendS.o")));
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else
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CmdArgs.push_back(
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Args.MakeArgString(ToolChain.GetFilePath("crtend.o")));
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CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crtn.o")));
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}
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ToolChain.addProfileRTLibs(Args, CmdArgs);
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const char *Exec = Args.MakeArgString(ToolChain.GetLinkerPath());
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C.addCommand(std::make_unique<Command>(JA, *this,
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ResponseFileSupport::AtFileCurCP(),
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Exec, CmdArgs, Inputs, Output));
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}
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/// NetBSD - NetBSD tool chain which can call as(1) and ld(1) directly.
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NetBSD::NetBSD(const Driver &D, const llvm::Triple &Triple, const ArgList &Args)
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: Generic_ELF(D, Triple, Args) {
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if (!Args.hasArg(options::OPT_nostdlib)) {
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// When targeting a 32-bit platform, try the special directory used on
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// 64-bit hosts, and only fall back to the main library directory if that
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// doesn't work.
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// FIXME: It'd be nicer to test if this directory exists, but I'm not sure
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// what all logic is needed to emulate the '=' prefix here.
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switch (Triple.getArch()) {
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case llvm::Triple::x86:
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getFilePaths().push_back("=/usr/lib/i386");
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break;
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case llvm::Triple::arm:
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case llvm::Triple::armeb:
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case llvm::Triple::thumb:
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case llvm::Triple::thumbeb:
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switch (Triple.getEnvironment()) {
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case llvm::Triple::EABI:
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case llvm::Triple::GNUEABI:
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getFilePaths().push_back("=/usr/lib/eabi");
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break;
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case llvm::Triple::EABIHF:
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case llvm::Triple::GNUEABIHF:
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getFilePaths().push_back("=/usr/lib/eabihf");
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break;
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default:
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getFilePaths().push_back("=/usr/lib/oabi");
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break;
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}
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break;
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case llvm::Triple::mips64:
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case llvm::Triple::mips64el:
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if (tools::mips::hasMipsAbiArg(Args, "o32"))
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getFilePaths().push_back("=/usr/lib/o32");
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else if (tools::mips::hasMipsAbiArg(Args, "64"))
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getFilePaths().push_back("=/usr/lib/64");
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break;
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case llvm::Triple::ppc:
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getFilePaths().push_back("=/usr/lib/powerpc");
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break;
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case llvm::Triple::sparc:
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getFilePaths().push_back("=/usr/lib/sparc");
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break;
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default:
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break;
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}
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getFilePaths().push_back("=/usr/lib");
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}
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}
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Tool *NetBSD::buildAssembler() const {
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return new tools::netbsd::Assembler(*this);
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}
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Tool *NetBSD::buildLinker() const { return new tools::netbsd::Linker(*this); }
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ToolChain::CXXStdlibType NetBSD::GetDefaultCXXStdlibType() const {
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VersionTuple OsVersion = getTriple().getOSVersion();
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if (OsVersion >= VersionTuple(7) || OsVersion.getMajor() == 0) {
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switch (getArch()) {
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case llvm::Triple::aarch64:
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case llvm::Triple::aarch64_be:
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case llvm::Triple::arm:
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case llvm::Triple::armeb:
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case llvm::Triple::thumb:
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case llvm::Triple::thumbeb:
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case llvm::Triple::ppc:
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case llvm::Triple::ppc64:
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case llvm::Triple::ppc64le:
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case llvm::Triple::sparc:
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case llvm::Triple::sparcv9:
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case llvm::Triple::x86:
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case llvm::Triple::x86_64:
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return ToolChain::CST_Libcxx;
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default:
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break;
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}
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}
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return ToolChain::CST_Libstdcxx;
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}
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void NetBSD::AddClangSystemIncludeArgs(
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const llvm::opt::ArgList &DriverArgs,
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llvm::opt::ArgStringList &CC1Args) const {
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const Driver &D = getDriver();
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if (DriverArgs.hasArg(clang::driver::options::OPT_nostdinc))
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return;
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if (!DriverArgs.hasArg(options::OPT_nobuiltininc)) {
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SmallString<128> Dir(D.ResourceDir);
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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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if (DriverArgs.hasArg(options::OPT_nostdlibinc))
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return;
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// Check for configure-time C include directories.
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StringRef CIncludeDirs(C_INCLUDE_DIRS);
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if (CIncludeDirs != "") {
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SmallVector<StringRef, 5> dirs;
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CIncludeDirs.split(dirs, ":");
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for (StringRef dir : dirs) {
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StringRef Prefix =
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llvm::sys::path::is_absolute(dir) ? StringRef(D.SysRoot) : "";
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addExternCSystemInclude(DriverArgs, CC1Args, Prefix + dir);
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}
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return;
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}
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addExternCSystemInclude(DriverArgs, CC1Args,
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concat(D.SysRoot, "/usr/include"));
|
|
}
|
|
|
|
void NetBSD::addLibCxxIncludePaths(const llvm::opt::ArgList &DriverArgs,
|
|
llvm::opt::ArgStringList &CC1Args) const {
|
|
const std::string Candidates[] = {
|
|
// directory relative to build tree
|
|
getDriver().Dir + "/../include/c++/v1",
|
|
// system install with full upstream path
|
|
getDriver().SysRoot + "/usr/include/c++/v1",
|
|
// system install from src
|
|
getDriver().SysRoot + "/usr/include/c++",
|
|
};
|
|
|
|
for (const auto &IncludePath : Candidates) {
|
|
if (!getVFS().exists(IncludePath + "/__config"))
|
|
continue;
|
|
|
|
// Use the first candidate that looks valid.
|
|
addSystemInclude(DriverArgs, CC1Args, IncludePath);
|
|
return;
|
|
}
|
|
}
|
|
|
|
void NetBSD::addLibStdCxxIncludePaths(const llvm::opt::ArgList &DriverArgs,
|
|
llvm::opt::ArgStringList &CC1Args) const {
|
|
addLibStdCXXIncludePaths(getDriver().SysRoot + "/usr/include/g++", "", "",
|
|
DriverArgs, CC1Args);
|
|
}
|
|
|
|
llvm::ExceptionHandling NetBSD::GetExceptionModel(const ArgList &Args) const {
|
|
// NetBSD uses Dwarf exceptions on ARM.
|
|
llvm::Triple::ArchType TArch = getTriple().getArch();
|
|
if (TArch == llvm::Triple::arm || TArch == llvm::Triple::armeb ||
|
|
TArch == llvm::Triple::thumb || TArch == llvm::Triple::thumbeb)
|
|
return llvm::ExceptionHandling::DwarfCFI;
|
|
return llvm::ExceptionHandling::None;
|
|
}
|
|
|
|
SanitizerMask NetBSD::getSupportedSanitizers() const {
|
|
const bool IsX86 = getTriple().getArch() == llvm::Triple::x86;
|
|
const bool IsX86_64 = getTriple().getArch() == llvm::Triple::x86_64;
|
|
SanitizerMask Res = ToolChain::getSupportedSanitizers();
|
|
if (IsX86 || IsX86_64) {
|
|
Res |= SanitizerKind::Address;
|
|
Res |= SanitizerKind::PointerCompare;
|
|
Res |= SanitizerKind::PointerSubtract;
|
|
Res |= SanitizerKind::Function;
|
|
Res |= SanitizerKind::Leak;
|
|
Res |= SanitizerKind::SafeStack;
|
|
Res |= SanitizerKind::Scudo;
|
|
Res |= SanitizerKind::Vptr;
|
|
}
|
|
if (IsX86_64) {
|
|
Res |= SanitizerKind::DataFlow;
|
|
Res |= SanitizerKind::Fuzzer;
|
|
Res |= SanitizerKind::FuzzerNoLink;
|
|
Res |= SanitizerKind::HWAddress;
|
|
Res |= SanitizerKind::KernelAddress;
|
|
Res |= SanitizerKind::KernelHWAddress;
|
|
Res |= SanitizerKind::KernelMemory;
|
|
Res |= SanitizerKind::Memory;
|
|
Res |= SanitizerKind::Thread;
|
|
}
|
|
return Res;
|
|
}
|
|
|
|
void NetBSD::addClangTargetOptions(const ArgList &DriverArgs,
|
|
ArgStringList &CC1Args,
|
|
Action::OffloadKind) const {
|
|
const SanitizerArgs &SanArgs = getSanitizerArgs(DriverArgs);
|
|
if (SanArgs.hasAnySanitizer())
|
|
CC1Args.push_back("-D_REENTRANT");
|
|
|
|
VersionTuple OsVersion = getTriple().getOSVersion();
|
|
bool UseInitArrayDefault =
|
|
OsVersion >= VersionTuple(9) || OsVersion.getMajor() == 0 ||
|
|
getTriple().getArch() == llvm::Triple::aarch64 ||
|
|
getTriple().getArch() == llvm::Triple::aarch64_be ||
|
|
getTriple().getArch() == llvm::Triple::arm ||
|
|
getTriple().getArch() == llvm::Triple::armeb;
|
|
|
|
if (!DriverArgs.hasFlag(options::OPT_fuse_init_array,
|
|
options::OPT_fno_use_init_array, UseInitArrayDefault))
|
|
CC1Args.push_back("-fno-use-init-array");
|
|
}
|