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
19using namespace clang::driver;
20using namespace clang::driver::tools;
21using namespace clang::driver::toolchains;
22using namespace clang;
23using namespace llvm::opt;
24
25void 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
47void 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
139Ananas::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
144Tool *Ananas::buildAssembler() const {
145  return new tools::ananas::Assembler(*this);
146}
147
148Tool *Ananas::buildLinker() const { return new tools::ananas::Linker(*this); }
149