1 //===--- DragonFly.cpp - DragonFly ToolChain Implementations ----*- C++ -*-===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 9 #include "DragonFly.h" 10 #include "CommonArgs.h" 11 #include "clang/Driver/Compilation.h" 12 #include "clang/Driver/Driver.h" 13 #include "clang/Driver/Options.h" 14 #include "llvm/Option/ArgList.h" 15 16 using namespace clang::driver; 17 using namespace clang::driver::tools; 18 using namespace clang::driver::toolchains; 19 using namespace clang; 20 using namespace llvm::opt; 21 22 /// DragonFly Tools 23 24 // For now, DragonFly Assemble does just about the same as for 25 // FreeBSD, but this may change soon. 26 void dragonfly::Assembler::ConstructJob(Compilation &C, const JobAction &JA, 27 const InputInfo &Output, 28 const InputInfoList &Inputs, 29 const ArgList &Args, 30 const char *LinkingOutput) const { 31 claimNoWarnArgs(Args); 32 ArgStringList CmdArgs; 33 34 // When building 32-bit code on DragonFly/pc64, we have to explicitly 35 // instruct as in the base system to assemble 32-bit code. 36 if (getToolChain().getArch() == llvm::Triple::x86) 37 CmdArgs.push_back("--32"); 38 39 Args.AddAllArgValues(CmdArgs, options::OPT_Wa_COMMA, options::OPT_Xassembler); 40 41 CmdArgs.push_back("-o"); 42 CmdArgs.push_back(Output.getFilename()); 43 44 for (const auto &II : Inputs) 45 CmdArgs.push_back(II.getFilename()); 46 47 const char *Exec = Args.MakeArgString(getToolChain().GetProgramPath("as")); 48 C.addCommand(std::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs)); 49 } 50 51 void dragonfly::Linker::ConstructJob(Compilation &C, const JobAction &JA, 52 const InputInfo &Output, 53 const InputInfoList &Inputs, 54 const ArgList &Args, 55 const char *LinkingOutput) const { 56 const Driver &D = getToolChain().getDriver(); 57 ArgStringList CmdArgs; 58 59 if (!D.SysRoot.empty()) 60 CmdArgs.push_back(Args.MakeArgString("--sysroot=" + D.SysRoot)); 61 62 CmdArgs.push_back("--eh-frame-hdr"); 63 if (Args.hasArg(options::OPT_static)) { 64 CmdArgs.push_back("-Bstatic"); 65 } else { 66 if (Args.hasArg(options::OPT_rdynamic)) 67 CmdArgs.push_back("-export-dynamic"); 68 if (Args.hasArg(options::OPT_shared)) 69 CmdArgs.push_back("-Bshareable"); 70 else { 71 CmdArgs.push_back("-dynamic-linker"); 72 CmdArgs.push_back("/usr/libexec/ld-elf.so.2"); 73 } 74 CmdArgs.push_back("--hash-style=gnu"); 75 CmdArgs.push_back("--enable-new-dtags"); 76 } 77 78 // When building 32-bit code on DragonFly/pc64, we have to explicitly 79 // instruct ld in the base system to link 32-bit code. 80 if (getToolChain().getArch() == llvm::Triple::x86) { 81 CmdArgs.push_back("-m"); 82 CmdArgs.push_back("elf_i386"); 83 } 84 85 if (Output.isFilename()) { 86 CmdArgs.push_back("-o"); 87 CmdArgs.push_back(Output.getFilename()); 88 } else { 89 assert(Output.isNothing() && "Invalid output."); 90 } 91 92 if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles)) { 93 if (!Args.hasArg(options::OPT_shared)) { 94 if (Args.hasArg(options::OPT_pg)) 95 CmdArgs.push_back( 96 Args.MakeArgString(getToolChain().GetFilePath("gcrt1.o"))); 97 else { 98 if (Args.hasArg(options::OPT_pie)) 99 CmdArgs.push_back( 100 Args.MakeArgString(getToolChain().GetFilePath("Scrt1.o"))); 101 else 102 CmdArgs.push_back( 103 Args.MakeArgString(getToolChain().GetFilePath("crt1.o"))); 104 } 105 } 106 CmdArgs.push_back(Args.MakeArgString(getToolChain().GetFilePath("crti.o"))); 107 if (Args.hasArg(options::OPT_shared) || Args.hasArg(options::OPT_pie)) 108 CmdArgs.push_back( 109 Args.MakeArgString(getToolChain().GetFilePath("crtbeginS.o"))); 110 else 111 CmdArgs.push_back( 112 Args.MakeArgString(getToolChain().GetFilePath("crtbegin.o"))); 113 } 114 115 Args.AddAllArgs(CmdArgs, 116 {options::OPT_L, options::OPT_T_Group, options::OPT_e}); 117 118 AddLinkerInputs(getToolChain(), Inputs, Args, CmdArgs, JA); 119 120 if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs)) { 121 CmdArgs.push_back("-L/usr/lib/gcc50"); 122 123 if (!Args.hasArg(options::OPT_static)) { 124 CmdArgs.push_back("-rpath"); 125 CmdArgs.push_back("/usr/lib/gcc50"); 126 } 127 128 if (D.CCCIsCXX()) { 129 if (getToolChain().ShouldLinkCXXStdlib(Args)) 130 getToolChain().AddCXXStdlibLibArgs(Args, CmdArgs); 131 CmdArgs.push_back("-lm"); 132 } 133 134 if (Args.hasArg(options::OPT_pthread)) 135 CmdArgs.push_back("-lpthread"); 136 137 if (!Args.hasArg(options::OPT_nolibc)) { 138 CmdArgs.push_back("-lc"); 139 } 140 141 if (Args.hasArg(options::OPT_static) || 142 Args.hasArg(options::OPT_static_libgcc)) { 143 CmdArgs.push_back("-lgcc"); 144 CmdArgs.push_back("-lgcc_eh"); 145 } else { 146 if (Args.hasArg(options::OPT_shared_libgcc)) { 147 CmdArgs.push_back("-lgcc_pic"); 148 if (!Args.hasArg(options::OPT_shared)) 149 CmdArgs.push_back("-lgcc"); 150 } else { 151 CmdArgs.push_back("-lgcc"); 152 CmdArgs.push_back("--as-needed"); 153 CmdArgs.push_back("-lgcc_pic"); 154 CmdArgs.push_back("--no-as-needed"); 155 } 156 } 157 } 158 159 if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles)) { 160 if (Args.hasArg(options::OPT_shared) || Args.hasArg(options::OPT_pie)) 161 CmdArgs.push_back( 162 Args.MakeArgString(getToolChain().GetFilePath("crtendS.o"))); 163 else 164 CmdArgs.push_back( 165 Args.MakeArgString(getToolChain().GetFilePath("crtend.o"))); 166 CmdArgs.push_back(Args.MakeArgString(getToolChain().GetFilePath("crtn.o"))); 167 } 168 169 getToolChain().addProfileRTLibs(Args, CmdArgs); 170 171 const char *Exec = Args.MakeArgString(getToolChain().GetLinkerPath()); 172 C.addCommand(std::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs)); 173 } 174 175 /// DragonFly - DragonFly tool chain which can call as(1) and ld(1) directly. 176 177 DragonFly::DragonFly(const Driver &D, const llvm::Triple &Triple, 178 const ArgList &Args) 179 : Generic_ELF(D, Triple, Args) { 180 181 // Path mangling to find libexec 182 getProgramPaths().push_back(getDriver().getInstalledDir()); 183 if (getDriver().getInstalledDir() != getDriver().Dir) 184 getProgramPaths().push_back(getDriver().Dir); 185 186 getFilePaths().push_back(getDriver().Dir + "/../lib"); 187 getFilePaths().push_back("/usr/lib"); 188 getFilePaths().push_back("/usr/lib/gcc50"); 189 } 190 191 Tool *DragonFly::buildAssembler() const { 192 return new tools::dragonfly::Assembler(*this); 193 } 194 195 Tool *DragonFly::buildLinker() const { 196 return new tools::dragonfly::Linker(*this); 197 } 198