clang/lib/Driver/ToolChains/Ananas.cpp

   1 //===--- Ananas.cpp - Ananas 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 "Ananas.h"
  10 #include "CommonArgs.h"
  11 #include "clang/Driver/Compilation.h"
  12 #include "clang/Driver/Driver.h"
  13 #include "clang/Driver/InputInfo.h"
  14 #include "clang/Driver/Options.h"
  15 #include "llvm/ADT/SmallString.h"
  16 #include "llvm/Option/ArgList.h"
  17 #include "llvm/Support/Path.h"
  18
  19 using namespace clang::driver;
  20 using namespace clang::driver::tools;
  21 using namespace clang::driver::toolchains;
  22 using namespace clang;
  23 using namespace llvm::opt;
  24
  25 void ananas::Assembler::ConstructJob(Compilation &C, const JobAction &JA,
  26                                      const InputInfo &Output,
  27                                      const InputInfoList &Inputs,
  28                                      const ArgList &Args,
  29                                      const char *LinkingOutput) const {
  30   claimNoWarnArgs(Args);
  31   ArgStringList CmdArgs;
  32
  33   Args.AddAllArgValues(CmdArgs, options::OPT_Wa_COMMA, options::OPT_Xassembler);
  34
  35   CmdArgs.push_back("-o");
  36   CmdArgs.push_back(Output.getFilename());
  37
  38   for (const auto &II : Inputs)
  39     CmdArgs.push_back(II.getFilename());
  40
  41   const char *Exec = Args.MakeArgString(getToolChain().GetProgramPath("as"));
  42   C.addCommand(std::make_unique<Command>(JA, *this,
  43                                          ResponseFileSupport::AtFileCurCP(),
  44                                          Exec, CmdArgs, Inputs, Output));
  45 }
  46
  47 void ananas::Linker::ConstructJob(Compilation &C, const JobAction &JA,
  48                                   const InputInfo &Output,
  49                                   const InputInfoList &Inputs,
  50                                   const ArgList &Args,
  51                                   const char *LinkingOutput) const {
  52   const ToolChain &ToolChain = getToolChain();
  53   const Driver &D = ToolChain.getDriver();
  54   ArgStringList CmdArgs;
  55
  56   // Silence warning for "clang -g foo.o -o foo"
  57   Args.ClaimAllArgs(options::OPT_g_Group);
  58   // and "clang -emit-llvm foo.o -o foo"
  59   Args.ClaimAllArgs(options::OPT_emit_llvm);
  60   // and for "clang -w foo.o -o foo". Other warning options are already
  61   // handled somewhere else.
  62   Args.ClaimAllArgs(options::OPT_w);
  63
  64   if (!D.SysRoot.empty())
  65     CmdArgs.push_back(Args.MakeArgString("--sysroot=" + D.SysRoot));
  66
  67   if (Args.hasArg(options::OPT_static)) {
  68     CmdArgs.push_back("-Bstatic");
  69   } else {
  70     if (Args.hasArg(options::OPT_rdynamic))
  71       CmdArgs.push_back("-export-dynamic");
  72     if (Args.hasArg(options::OPT_shared)) {
  73       CmdArgs.push_back("-Bshareable");
  74     } else if (!Args.hasArg(options::OPT_r)) {
  75       Args.AddAllArgs(CmdArgs, options::OPT_pie);
  76       CmdArgs.push_back("-dynamic-linker");
  77       CmdArgs.push_back("/lib/ld-ananas.so");
  78     }
  79   }
  80
  81   if (Output.isFilename()) {
  82     CmdArgs.push_back("-o");
  83     CmdArgs.push_back(Output.getFilename());
  84   } else {
  85     assert(Output.isNothing() && "Invalid output.");
  86   }
  87
  88   if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles,
  89                    options::OPT_r)) {
  90     if (!Args.hasArg(options::OPT_shared)) {
  91       CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crt0.o")));
  92     }
  93     CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crti.o")));
  94     if (Args.hasArg(options::OPT_shared) || Args.hasArg(options::OPT_pie)) {
  95       CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crtbeginS.o")));
  96     } else {
  97       CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crtbegin.o")));
  98     }
  99   }
 100
 101   Args.AddAllArgs(CmdArgs, options::OPT_L);
 102   ToolChain.AddFilePathLibArgs(Args, CmdArgs);
 103   Args.AddAllArgs(CmdArgs,
 104                   {options::OPT_T_Group, options::OPT_e, options::OPT_s,
 105                    options::OPT_t, options::OPT_Z_Flag, options::OPT_r});
 106
 107   if (D.isUsingLTO()) {
 108     assert(!Inputs.empty() && "Must have at least one input.");
 109     addLTOOptions(ToolChain, Args, CmdArgs, Output, Inputs[0],
 110                   D.getLTOMode() == LTOK_Thin);
 111   }
 112
 113   AddLinkerInputs(ToolChain, Inputs, Args, CmdArgs, JA);
 114
 115   if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs,
 116                    options::OPT_r)) {
 117     if (ToolChain.ShouldLinkCXXStdlib(Args))
 118       ToolChain.AddCXXStdlibLibArgs(Args, CmdArgs);
 119     CmdArgs.push_back("-lc");
 120   }
 121
 122   if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles,
 123                    options::OPT_r)) {
 124     if (Args.hasArg(options::OPT_shared) || Args.hasArg(options::OPT_pie))
 125       CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crtendS.o")));
 126     else
 127       CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crtend.o")));
 128     CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crtn.o")));
 129   }
 130
 131   const char *Exec = Args.MakeArgString(ToolChain.GetLinkerPath());
 132   C.addCommand(std::make_unique<Command>(JA, *this,
 133                                          ResponseFileSupport::AtFileCurCP(),
 134                                          Exec, CmdArgs, Inputs, Output));
 135 }
 136
 137 // Ananas - Ananas tool chain which can call as(1) and ld(1) directly.
 138
 139 Ananas::Ananas(const Driver &D, const llvm::Triple &Triple, const ArgList &Args)
 140     : Generic_ELF(D, Triple, Args) {
 141   getFilePaths().push_back(getDriver().SysRoot + "/usr/lib");
 142 }
 143
 144 Tool *Ananas::buildAssembler() const {
 145   return new tools::ananas::Assembler(*this);
 146 }
 147
 148 Tool *Ananas::buildLinker() const { return new tools::ananas::Linker(*this); }