500 lines
16 KiB
C++
500 lines
16 KiB
C++
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//===--- FreeBSD.cpp - FreeBSD 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 "FreeBSD.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/Driver/Compilation.h"
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#include "clang/Driver/DriverDiagnostic.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 freebsd::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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claimNoWarnArgs(Args);
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ArgStringList CmdArgs;
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const auto &D = getToolChain().getDriver();
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// When building 32-bit code on FreeBSD/amd64, we have to explicitly
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// instruct as in the base system to assemble 32-bit code.
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switch (getToolChain().getArch()) {
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default:
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break;
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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::ppc:
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case llvm::Triple::ppcle:
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CmdArgs.push_back("-a32");
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break;
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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, getToolChain().getTriple(), 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 (getToolChain().getTriple().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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if (Arg *A = Args.getLastArg(options::OPT_G)) {
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StringRef v = A->getValue();
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CmdArgs.push_back(Args.MakeArgString("-G" + v));
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A->claim();
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}
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AddAssemblerKPIC(getToolChain(), Args, CmdArgs);
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break;
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}
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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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arm::FloatABI ABI = arm::getARMFloatABI(getToolChain(), Args);
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if (ABI == arm::FloatABI::Hard)
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CmdArgs.push_back("-mfpu=vfp");
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else
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CmdArgs.push_back("-mfpu=softvfp");
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switch (getToolChain().getTriple().getEnvironment()) {
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case llvm::Triple::GNUEABIHF:
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case llvm::Triple::GNUEABI:
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case llvm::Triple::EABI:
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CmdArgs.push_back("-meabi=5");
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break;
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default:
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CmdArgs.push_back("-matpcs");
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}
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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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case llvm::Triple::sparcv9: {
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std::string CPU = getCPUName(Args, getToolChain().getTriple());
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CmdArgs.push_back(
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sparc::getSparcAsmModeForCPU(CPU, getToolChain().getTriple()));
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AddAssemblerKPIC(getToolChain(), Args, CmdArgs);
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break;
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}
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}
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for (const Arg *A : Args.filtered(options::OPT_ffile_prefix_map_EQ,
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options::OPT_fdebug_prefix_map_EQ)) {
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StringRef Map = A->getValue();
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if (Map.find('=') == StringRef::npos)
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D.Diag(diag::err_drv_invalid_argument_to_option)
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<< Map << A->getOption().getName();
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else {
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CmdArgs.push_back(Args.MakeArgString("--debug-prefix-map"));
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CmdArgs.push_back(Args.MakeArgString(Map));
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}
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A->claim();
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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(getToolChain().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 freebsd::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::FreeBSD &ToolChain =
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static_cast<const toolchains::FreeBSD &>(getToolChain());
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const Driver &D = ToolChain.getDriver();
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const llvm::Triple::ArchType Arch = ToolChain.getArch();
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const bool IsPIE =
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!Args.hasArg(options::OPT_shared) &&
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(Args.hasArg(options::OPT_pie) || ToolChain.isPIEDefault());
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ArgStringList CmdArgs;
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// Silence warning for "clang -g foo.o -o foo"
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Args.ClaimAllArgs(options::OPT_g_Group);
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// and "clang -emit-llvm foo.o -o foo"
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Args.ClaimAllArgs(options::OPT_emit_llvm);
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// and for "clang -w foo.o -o foo". Other warning options are already
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// handled somewhere else.
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Args.ClaimAllArgs(options::OPT_w);
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if (!D.SysRoot.empty())
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CmdArgs.push_back(Args.MakeArgString("--sysroot=" + D.SysRoot));
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if (IsPIE)
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CmdArgs.push_back("-pie");
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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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} 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 {
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CmdArgs.push_back("-dynamic-linker");
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CmdArgs.push_back("/libexec/ld-elf.so.1");
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}
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const llvm::Triple &T = ToolChain.getTriple();
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if (T.getOSMajorVersion() >= 9) {
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if (Arch == llvm::Triple::arm || Arch == llvm::Triple::sparc || T.isX86())
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CmdArgs.push_back("--hash-style=both");
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}
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CmdArgs.push_back("--enable-new-dtags");
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}
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// Explicitly set the linker emulation for platforms that might not
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// be the default emulation for the linker.
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switch (Arch) {
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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_fbsd");
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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_fbsd");
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break;
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case llvm::Triple::ppcle:
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CmdArgs.push_back("-m");
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// Use generic -- only usage is for freestanding.
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CmdArgs.push_back("elf32lppc");
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break;
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case llvm::Triple::mips:
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CmdArgs.push_back("-m");
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CmdArgs.push_back("elf32btsmip_fbsd");
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break;
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case llvm::Triple::mipsel:
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CmdArgs.push_back("-m");
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CmdArgs.push_back("elf32ltsmip_fbsd");
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break;
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case llvm::Triple::mips64:
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CmdArgs.push_back("-m");
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if (tools::mips::hasMipsAbiArg(Args, "n32"))
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CmdArgs.push_back("elf32btsmipn32_fbsd");
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else
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CmdArgs.push_back("elf64btsmip_fbsd");
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break;
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case llvm::Triple::mips64el:
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CmdArgs.push_back("-m");
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if (tools::mips::hasMipsAbiArg(Args, "n32"))
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CmdArgs.push_back("elf32ltsmipn32_fbsd");
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else
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CmdArgs.push_back("elf64ltsmip_fbsd");
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break;
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case llvm::Triple::riscv32:
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CmdArgs.push_back("-m");
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CmdArgs.push_back("elf32lriscv");
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break;
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case llvm::Triple::riscv64:
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CmdArgs.push_back("-m");
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CmdArgs.push_back("elf64lriscv");
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break;
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default:
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break;
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}
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if (Arg *A = Args.getLastArg(options::OPT_G)) {
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if (ToolChain.getTriple().isMIPS()) {
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StringRef v = A->getValue();
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CmdArgs.push_back(Args.MakeArgString("-G" + v));
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A->claim();
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}
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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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const char *crt1 = nullptr;
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if (!Args.hasArg(options::OPT_shared)) {
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if (Args.hasArg(options::OPT_pg))
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crt1 = "gcrt1.o";
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else if (IsPIE)
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crt1 = "Scrt1.o";
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else
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crt1 = "crt1.o";
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}
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if (crt1)
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CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath(crt1)));
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CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crti.o")));
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const char *crtbegin = nullptr;
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if (Args.hasArg(options::OPT_static))
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crtbegin = "crtbeginT.o";
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else if (Args.hasArg(options::OPT_shared) || IsPIE)
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crtbegin = "crtbeginS.o";
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else
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crtbegin = "crtbegin.o";
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CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath(crtbegin)));
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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, 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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if (D.isUsingLTO()) {
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assert(!Inputs.empty() && "Must have at least one input.");
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addLTOOptions(ToolChain, Args, CmdArgs, Output, Inputs[0],
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D.getLTOMode() == LTOK_Thin);
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}
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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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if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs)) {
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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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if (Args.hasArg(options::OPT_pg))
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CmdArgs.push_back("-lm_p");
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else
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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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// FIXME: For some reason GCC passes -lgcc and -lgcc_s before adding
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// the default system libraries. Just mimic this for now.
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if (Args.hasArg(options::OPT_pg))
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CmdArgs.push_back("-lgcc_p");
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else
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CmdArgs.push_back("-lgcc");
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if (Args.hasArg(options::OPT_static)) {
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CmdArgs.push_back("-lgcc_eh");
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} else if (Args.hasArg(options::OPT_pg)) {
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CmdArgs.push_back("-lgcc_eh_p");
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} else {
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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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if (Args.hasArg(options::OPT_pthread)) {
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if (Args.hasArg(options::OPT_pg))
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CmdArgs.push_back("-lpthread_p");
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else
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CmdArgs.push_back("-lpthread");
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}
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if (Args.hasArg(options::OPT_pg)) {
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if (Args.hasArg(options::OPT_shared))
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CmdArgs.push_back("-lc");
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else
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CmdArgs.push_back("-lc_p");
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CmdArgs.push_back("-lgcc_p");
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} else {
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CmdArgs.push_back("-lc");
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CmdArgs.push_back("-lgcc");
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}
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if (Args.hasArg(options::OPT_static)) {
|
||
|
|
CmdArgs.push_back("-lgcc_eh");
|
||
|
|
} else if (Args.hasArg(options::OPT_pg)) {
|
||
|
|
CmdArgs.push_back("-lgcc_eh_p");
|
||
|
|
} else {
|
||
|
|
CmdArgs.push_back("--as-needed");
|
||
|
|
CmdArgs.push_back("-lgcc_s");
|
||
|
|
CmdArgs.push_back("--no-as-needed");
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles)) {
|
||
|
|
if (Args.hasArg(options::OPT_shared) || IsPIE)
|
||
|
|
CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crtendS.o")));
|
||
|
|
else
|
||
|
|
CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crtend.o")));
|
||
|
|
CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crtn.o")));
|
||
|
|
}
|
||
|
|
|
||
|
|
ToolChain.addProfileRTLibs(Args, CmdArgs);
|
||
|
|
|
||
|
|
const char *Exec = Args.MakeArgString(getToolChain().GetLinkerPath());
|
||
|
|
C.addCommand(std::make_unique<Command>(JA, *this,
|
||
|
|
ResponseFileSupport::AtFileCurCP(),
|
||
|
|
Exec, CmdArgs, Inputs, Output));
|
||
|
|
}
|
||
|
|
|
||
|
|
/// FreeBSD - FreeBSD tool chain which can call as(1) and ld(1) directly.
|
||
|
|
|
||
|
|
FreeBSD::FreeBSD(const Driver &D, const llvm::Triple &Triple,
|
||
|
|
const ArgList &Args)
|
||
|
|
: Generic_ELF(D, Triple, Args) {
|
||
|
|
|
||
|
|
// When targeting 32-bit platforms, look for '/usr/lib32/crt1.o' and fall
|
||
|
|
// back to '/usr/lib' if it doesn't exist.
|
||
|
|
if ((Triple.getArch() == llvm::Triple::x86 || Triple.isMIPS32() ||
|
||
|
|
Triple.isPPC32()) &&
|
||
|
|
D.getVFS().exists(getDriver().SysRoot + "/usr/lib32/crt1.o"))
|
||
|
|
getFilePaths().push_back(getDriver().SysRoot + "/usr/lib32");
|
||
|
|
else
|
||
|
|
getFilePaths().push_back(getDriver().SysRoot + "/usr/lib");
|
||
|
|
}
|
||
|
|
|
||
|
|
ToolChain::CXXStdlibType FreeBSD::GetDefaultCXXStdlibType() const {
|
||
|
|
if (getTriple().getOSMajorVersion() >= 10)
|
||
|
|
return ToolChain::CST_Libcxx;
|
||
|
|
return ToolChain::CST_Libstdcxx;
|
||
|
|
}
|
||
|
|
|
||
|
|
unsigned FreeBSD::GetDefaultDwarfVersion() const {
|
||
|
|
if (getTriple().getOSMajorVersion() < 12)
|
||
|
|
return 2;
|
||
|
|
return 4;
|
||
|
|
}
|
||
|
|
|
||
|
|
void FreeBSD::addLibCxxIncludePaths(const llvm::opt::ArgList &DriverArgs,
|
||
|
|
llvm::opt::ArgStringList &CC1Args) const {
|
||
|
|
addSystemInclude(DriverArgs, CC1Args,
|
||
|
|
getDriver().SysRoot + "/usr/include/c++/v1");
|
||
|
|
}
|
||
|
|
|
||
|
|
void FreeBSD::addLibStdCxxIncludePaths(
|
||
|
|
const llvm::opt::ArgList &DriverArgs,
|
||
|
|
llvm::opt::ArgStringList &CC1Args) const {
|
||
|
|
addLibStdCXXIncludePaths(getDriver().SysRoot, "/usr/include/c++/4.2", "", "",
|
||
|
|
"", "", DriverArgs, CC1Args);
|
||
|
|
}
|
||
|
|
|
||
|
|
void FreeBSD::AddCXXStdlibLibArgs(const ArgList &Args,
|
||
|
|
ArgStringList &CmdArgs) const {
|
||
|
|
CXXStdlibType Type = GetCXXStdlibType(Args);
|
||
|
|
bool Profiling = Args.hasArg(options::OPT_pg);
|
||
|
|
|
||
|
|
switch (Type) {
|
||
|
|
case ToolChain::CST_Libcxx:
|
||
|
|
CmdArgs.push_back(Profiling ? "-lc++_p" : "-lc++");
|
||
|
|
break;
|
||
|
|
|
||
|
|
case ToolChain::CST_Libstdcxx:
|
||
|
|
CmdArgs.push_back(Profiling ? "-lstdc++_p" : "-lstdc++");
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
void FreeBSD::AddCudaIncludeArgs(const ArgList &DriverArgs,
|
||
|
|
ArgStringList &CC1Args) const {
|
||
|
|
CudaInstallation.AddCudaIncludeArgs(DriverArgs, CC1Args);
|
||
|
|
}
|
||
|
|
|
||
|
|
void FreeBSD::AddHIPIncludeArgs(const ArgList &DriverArgs,
|
||
|
|
ArgStringList &CC1Args) const {
|
||
|
|
RocmInstallation.AddHIPIncludeArgs(DriverArgs, CC1Args);
|
||
|
|
}
|
||
|
|
|
||
|
|
Tool *FreeBSD::buildAssembler() const {
|
||
|
|
return new tools::freebsd::Assembler(*this);
|
||
|
|
}
|
||
|
|
|
||
|
|
Tool *FreeBSD::buildLinker() const { return new tools::freebsd::Linker(*this); }
|
||
|
|
|
||
|
|
llvm::ExceptionHandling FreeBSD::GetExceptionModel(const ArgList &Args) const {
|
||
|
|
// FreeBSD uses SjLj exceptions on ARM oabi.
|
||
|
|
switch (getTriple().getEnvironment()) {
|
||
|
|
case llvm::Triple::GNUEABIHF:
|
||
|
|
case llvm::Triple::GNUEABI:
|
||
|
|
case llvm::Triple::EABI:
|
||
|
|
return llvm::ExceptionHandling::None;
|
||
|
|
default:
|
||
|
|
if (getTriple().getArch() == llvm::Triple::arm ||
|
||
|
|
getTriple().getArch() == llvm::Triple::thumb)
|
||
|
|
return llvm::ExceptionHandling::SjLj;
|
||
|
|
return llvm::ExceptionHandling::None;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
bool FreeBSD::HasNativeLLVMSupport() const { return true; }
|
||
|
|
|
||
|
|
bool FreeBSD::IsUnwindTablesDefault(const ArgList &Args) const { return true; }
|
||
|
|
|
||
|
|
bool FreeBSD::isPIEDefault() const { return getSanitizerArgs().requiresPIE(); }
|
||
|
|
|
||
|
|
SanitizerMask FreeBSD::getSupportedSanitizers() const {
|
||
|
|
const bool IsX86 = getTriple().getArch() == llvm::Triple::x86;
|
||
|
|
const bool IsX86_64 = getTriple().getArch() == llvm::Triple::x86_64;
|
||
|
|
const bool IsMIPS64 = getTriple().isMIPS64();
|
||
|
|
SanitizerMask Res = ToolChain::getSupportedSanitizers();
|
||
|
|
Res |= SanitizerKind::Address;
|
||
|
|
Res |= SanitizerKind::PointerCompare;
|
||
|
|
Res |= SanitizerKind::PointerSubtract;
|
||
|
|
Res |= SanitizerKind::Vptr;
|
||
|
|
if (IsX86_64 || IsMIPS64) {
|
||
|
|
Res |= SanitizerKind::Leak;
|
||
|
|
Res |= SanitizerKind::Thread;
|
||
|
|
}
|
||
|
|
if (IsX86 || IsX86_64) {
|
||
|
|
Res |= SanitizerKind::Function;
|
||
|
|
Res |= SanitizerKind::SafeStack;
|
||
|
|
Res |= SanitizerKind::Fuzzer;
|
||
|
|
Res |= SanitizerKind::FuzzerNoLink;
|
||
|
|
}
|
||
|
|
if (IsX86_64)
|
||
|
|
Res |= SanitizerKind::Memory;
|
||
|
|
return Res;
|
||
|
|
}
|
||
|
|
|
||
|
|
void FreeBSD::addClangTargetOptions(const ArgList &DriverArgs,
|
||
|
|
ArgStringList &CC1Args,
|
||
|
|
Action::OffloadKind) const {
|
||
|
|
if (!DriverArgs.hasFlag(options::OPT_fuse_init_array,
|
||
|
|
options::OPT_fno_use_init_array,
|
||
|
|
getTriple().getOSMajorVersion() >= 12))
|
||
|
|
CC1Args.push_back("-fno-use-init-array");
|
||
|
|
}
|