1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
|
//===--- DragonFly.cpp - DragonFly ToolChain Implementations ----*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "DragonFly.h"
#include "CommonArgs.h"
#include "clang/Driver/Compilation.h"
#include "clang/Driver/Driver.h"
#include "clang/Driver/Options.h"
#include "llvm/Option/ArgList.h"
#include "llvm/Support/Path.h"
using namespace clang::driver;
using namespace clang::driver::tools;
using namespace clang::driver::toolchains;
using namespace clang;
using namespace llvm::opt;
void dragonfly::Assembler::ConstructJob(Compilation &C, const JobAction &JA,
const InputInfo &Output,
const InputInfoList &Inputs,
const ArgList &Args,
const char *LinkingOutput) const {
const auto &ToolChain = static_cast<const DragonFly &>(getToolChain());
ArgStringList CmdArgs;
claimNoWarnArgs(Args);
// When building 32-bit code on DragonFly/pc64, we have to explicitly
// instruct as in the base system to assemble 32-bit code.
if (ToolChain.getArch() == llvm::Triple::x86)
CmdArgs.push_back("--32");
Args.AddAllArgValues(CmdArgs, options::OPT_Wa_COMMA, options::OPT_Xassembler);
CmdArgs.push_back("-o");
CmdArgs.push_back(Output.getFilename());
for (const auto &II : Inputs)
CmdArgs.push_back(II.getFilename());
const char *Exec = Args.MakeArgString(ToolChain.GetProgramPath("as"));
C.addCommand(std::make_unique<Command>(JA, *this,
ResponseFileSupport::AtFileCurCP(),
Exec, CmdArgs, Inputs, Output));
}
void dragonfly::Linker::ConstructJob(Compilation &C, const JobAction &JA,
const InputInfo &Output,
const InputInfoList &Inputs,
const ArgList &Args,
const char *LinkingOutput) const {
const auto &ToolChain = static_cast<const DragonFly &>(getToolChain());
const Driver &D = ToolChain.getDriver();
const llvm::Triple::ArchType Arch = ToolChain.getArch();
const bool Static = Args.hasArg(options::OPT_static);
const bool Shared = Args.hasArg(options::OPT_shared);
const bool Profiling = Args.hasArg(options::OPT_pg);
const bool Pie = Args.hasArg(options::OPT_pie);
ArgStringList CmdArgs;
if (!D.SysRoot.empty())
CmdArgs.push_back(Args.MakeArgString("--sysroot=" + D.SysRoot));
CmdArgs.push_back("--eh-frame-hdr");
if (Static) {
CmdArgs.push_back("-Bstatic");
} else {
if (Args.hasArg(options::OPT_rdynamic))
CmdArgs.push_back("-export-dynamic");
if (Shared)
CmdArgs.push_back("-shared");
else if (!Args.hasArg(options::OPT_r)) {
CmdArgs.push_back("-dynamic-linker");
CmdArgs.push_back("/usr/libexec/ld-elf.so.2");
}
CmdArgs.push_back("--hash-style=gnu");
CmdArgs.push_back("--enable-new-dtags");
}
// When building 32-bit code on DragonFly/pc64, we have to explicitly
// instruct ld in the base system to link 32-bit code.
if (Arch == llvm::Triple::x86) {
CmdArgs.push_back("-m");
CmdArgs.push_back("elf_i386");
}
assert((Output.isFilename() || Output.isNothing()) && "Invalid output.");
if (Output.isFilename()) {
CmdArgs.push_back("-o");
CmdArgs.push_back(Output.getFilename());
}
if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles,
options::OPT_r)) {
const char *crt1 = nullptr;
const char *crtbegin = nullptr;
if (!Shared) {
if (Profiling)
crt1 = "gcrt1.o";
else {
if (Pie)
crt1 = "Scrt1.o";
else
crt1 = "crt1.o";
}
}
if (Shared || Pie)
crtbegin = "crtbeginS.o";
else
crtbegin = "crtbegin.o";
if (crt1)
CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath(crt1)));
CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crti.o")));
CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath(crtbegin)));
}
Args.addAllArgs(CmdArgs, {options::OPT_L, options::OPT_T_Group,
options::OPT_s, options::OPT_t, options::OPT_r});
ToolChain.AddFilePathLibArgs(Args, CmdArgs);
AddLinkerInputs(ToolChain, Inputs, Args, CmdArgs, JA);
if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs,
options::OPT_r)) {
if (!Static) {
CmdArgs.push_back("-rpath");
CmdArgs.push_back("/usr/lib/gcc80");
}
// Use the static OpenMP runtime with -static-openmp
bool StaticOpenMP = Args.hasArg(options::OPT_static_openmp) && !Static;
addOpenMPRuntime(CmdArgs, ToolChain, Args, StaticOpenMP);
if (D.CCCIsCXX()) {
if (ToolChain.ShouldLinkCXXStdlib(Args))
ToolChain.AddCXXStdlibLibArgs(Args, CmdArgs);
CmdArgs.push_back("-lm");
}
// Silence warnings when linking C code with a C++ '-stdlib' argument.
Args.ClaimAllArgs(options::OPT_stdlib_EQ);
// Additional linker set-up and flags for Fortran. This is required in order
// to generate executables. As Fortran runtime depends on the C runtime,
// these dependencies need to be listed before the C runtime below (i.e.
// AddRunTimeLibs).
if (D.IsFlangMode()) {
addFortranRuntimeLibraryPath(ToolChain, Args, CmdArgs);
addFortranRuntimeLibs(ToolChain, CmdArgs);
CmdArgs.push_back("-lm");
}
if (Args.hasArg(options::OPT_pthread))
CmdArgs.push_back("-lpthread");
if (!Args.hasArg(options::OPT_nolibc))
CmdArgs.push_back("-lc");
if (Static || Args.hasArg(options::OPT_static_libgcc)) {
CmdArgs.push_back("-lgcc");
CmdArgs.push_back("-lgcc_eh");
} else {
if (Args.hasArg(options::OPT_shared_libgcc)) {
CmdArgs.push_back("-lgcc_pic");
if (!Shared)
CmdArgs.push_back("-lgcc");
} else {
CmdArgs.push_back("-lgcc");
CmdArgs.push_back("--as-needed");
CmdArgs.push_back("-lgcc_pic");
CmdArgs.push_back("--no-as-needed");
}
}
}
if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles,
options::OPT_r)) {
const char *crtend = nullptr;
if (Shared || Pie)
crtend ="crtendS.o";
else
crtend = "crtend.o";
CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath(crtend)));
CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crtn.o")));
}
ToolChain.addProfileRTLibs(Args, CmdArgs);
const char *Exec = Args.MakeArgString(ToolChain.GetLinkerPath());
C.addCommand(std::make_unique<Command>(JA, *this,
ResponseFileSupport::AtFileCurCP(),
Exec, CmdArgs, Inputs, Output));
}
/// DragonFly - DragonFly tool chain which can call as(1) and ld(1) directly.
DragonFly::DragonFly(const Driver &D, const llvm::Triple &Triple,
const ArgList &Args)
: Generic_ELF(D, Triple, Args) {
// Path mangling to find libexec
getProgramPaths().push_back(getDriver().getInstalledDir());
if (getDriver().getInstalledDir() != getDriver().Dir)
getProgramPaths().push_back(getDriver().Dir);
getFilePaths().push_back(getDriver().Dir + "/../lib");
getFilePaths().push_back(concat(getDriver().SysRoot, "/usr/lib"));
getFilePaths().push_back(concat(getDriver().SysRoot, "/usr/lib/gcc80"));
}
void DragonFly::AddClangSystemIncludeArgs(
const llvm::opt::ArgList &DriverArgs,
llvm::opt::ArgStringList &CC1Args) const {
const Driver &D = getDriver();
if (DriverArgs.hasArg(clang::driver::options::OPT_nostdinc))
return;
if (!DriverArgs.hasArg(options::OPT_nobuiltininc)) {
SmallString<128> Dir(D.ResourceDir);
llvm::sys::path::append(Dir, "include");
addSystemInclude(DriverArgs, CC1Args, Dir.str());
}
if (DriverArgs.hasArg(options::OPT_nostdlibinc))
return;
addExternCSystemInclude(DriverArgs, CC1Args,
concat(D.SysRoot, "/usr/include"));
}
void DragonFly::addLibStdCxxIncludePaths(const llvm::opt::ArgList &DriverArgs,
llvm::opt::ArgStringList &CC1Args) const {
addLibStdCXXIncludePaths(concat(getDriver().SysRoot, "/usr/include/c++/8.0"), "", "",
DriverArgs, CC1Args);
}
Tool *DragonFly::buildAssembler() const {
return new tools::dragonfly::Assembler(*this);
}
Tool *DragonFly::buildLinker() const {
return new tools::dragonfly::Linker(*this);
}
|