clang  9.0.0svn
DragonFly.cpp
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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"
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.
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(llvm::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));
49 }
50 
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(llvm::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 
192  return new tools::dragonfly::Assembler(*this);
193 }
194 
196  return new tools::dragonfly::Linker(*this);
197 }
Tool * buildLinker() const override
Definition: DragonFly.cpp:195
void ConstructJob(Compilation &C, const JobAction &JA, const InputInfo &Output, const InputInfoList &Inputs, const llvm::opt::ArgList &TCArgs, const char *LinkingOutput) const override
ConstructJob - Construct jobs to perform the action JA, writing to Output and with Inputs...
Definition: DragonFly.cpp:51
const char * getFilename() const
Definition: InputInfo.h:83
path_list & getProgramPaths()
Definition: ToolChain.h:234
InputInfo - Wrapper for information about an input source.
Definition: InputInfo.h:22
Tool * buildAssembler() const override
Definition: DragonFly.cpp:191
path_list & getFilePaths()
Definition: ToolChain.h:231
Driver - Encapsulate logic for constructing compilation processes from a set of gcc-driver-like comma...
Definition: Driver.h:57
void addCommand(std::unique_ptr< Command > C)
Definition: Compilation.h:205
const Driver & getDriver() const
Definition: ToolChain.h:193
bool CCCIsCXX() const
Whether the driver should follow g++ like behavior.
Definition: Driver.h:172
void ConstructJob(Compilation &C, const JobAction &JA, const InputInfo &Output, const InputInfoList &Inputs, const llvm::opt::ArgList &TCArgs, const char *LinkingOutput) const override
DragonFly Tools.
Definition: DragonFly.cpp:26
Dataflow Directional Tag Classes.
void AddLinkerInputs(const ToolChain &TC, const InputInfoList &Inputs, const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs, const JobAction &JA)
std::string SysRoot
sysroot, if present
Definition: Driver.h:147
Tool - Information on a specific compilation tool.
Definition: Tool.h:33
void claimNoWarnArgs(const llvm::opt::ArgList &Args)
Compilation - A set of tasks to perform for a single driver invocation.
Definition: Compilation.h:45
bool isNothing() const
Definition: InputInfo.h:74
bool isFilename() const
Definition: InputInfo.h:75