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
253
254
255
256
257
258
259
260
261
262
263
264
265
|
//===--- ToolChain.cpp - Collections of tools for one platform ------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "clang/Driver/ToolChain.h"
#include "clang/Driver/Action.h"
#include "clang/Driver/Arg.h"
#include "clang/Driver/ArgList.h"
#include "clang/Driver/Driver.h"
#include "clang/Driver/DriverDiagnostic.h"
#include "clang/Driver/HostInfo.h"
#include "clang/Driver/ObjCRuntime.h"
#include "clang/Driver/Options.h"
#include "llvm/Support/ErrorHandling.h"
using namespace clang::driver;
using namespace clang;
ToolChain::ToolChain(const HostInfo &H, const llvm::Triple &T)
: Host(H), Triple(T) {
}
ToolChain::~ToolChain() {
}
const Driver &ToolChain::getDriver() const {
return Host.getDriver();
}
std::string ToolChain::GetFilePath(const char *Name) const {
return Host.getDriver().GetFilePath(Name, *this);
}
std::string ToolChain::GetProgramPath(const char *Name, bool WantFile) const {
return Host.getDriver().GetProgramPath(Name, *this, WantFile);
}
types::ID ToolChain::LookupTypeForExtension(const char *Ext) const {
return types::lookupTypeForExtension(Ext);
}
bool ToolChain::HasNativeLLVMSupport() const {
return false;
}
void ToolChain::configureObjCRuntime(ObjCRuntime &runtime) const {
switch (runtime.getKind()) {
case ObjCRuntime::NeXT:
// Assume a minimal NeXT runtime.
runtime.HasARC = false;
runtime.HasWeak = false;
runtime.HasTerminate = false;
return;
case ObjCRuntime::GNU:
// Assume a maximal GNU runtime.
runtime.HasARC = true;
runtime.HasWeak = true;
runtime.HasTerminate = false; // to be added
return;
}
llvm_unreachable("invalid runtime kind!");
}
/// getARMTargetCPU - Get the (LLVM) name of the ARM cpu we are targeting.
//
// FIXME: tblgen this.
static const char *getARMTargetCPU(const ArgList &Args,
const llvm::Triple &Triple) {
// FIXME: Warn on inconsistent use of -mcpu and -march.
// If we have -mcpu=, use that.
if (Arg *A = Args.getLastArg(options::OPT_mcpu_EQ))
return A->getValue(Args);
StringRef MArch;
if (Arg *A = Args.getLastArg(options::OPT_march_EQ)) {
// Otherwise, if we have -march= choose the base CPU for that arch.
MArch = A->getValue(Args);
} else {
// Otherwise, use the Arch from the triple.
MArch = Triple.getArchName();
}
if (MArch == "armv2" || MArch == "armv2a")
return "arm2";
if (MArch == "armv3")
return "arm6";
if (MArch == "armv3m")
return "arm7m";
if (MArch == "armv4" || MArch == "armv4t")
return "arm7tdmi";
if (MArch == "armv5" || MArch == "armv5t")
return "arm10tdmi";
if (MArch == "armv5e" || MArch == "armv5te")
return "arm1026ejs";
if (MArch == "armv5tej")
return "arm926ej-s";
if (MArch == "armv6" || MArch == "armv6k")
return "arm1136jf-s";
if (MArch == "armv6j")
return "arm1136j-s";
if (MArch == "armv6z" || MArch == "armv6zk")
return "arm1176jzf-s";
if (MArch == "armv6t2")
return "arm1156t2-s";
if (MArch == "armv7" || MArch == "armv7a" || MArch == "armv7-a")
return "cortex-a8";
if (MArch == "armv7r" || MArch == "armv7-r")
return "cortex-r4";
if (MArch == "armv7m" || MArch == "armv7-m")
return "cortex-m3";
if (MArch == "ep9312")
return "ep9312";
if (MArch == "iwmmxt")
return "iwmmxt";
if (MArch == "xscale")
return "xscale";
if (MArch == "armv6m" || MArch == "armv6-m")
return "cortex-m0";
// If all else failed, return the most base CPU LLVM supports.
return "arm7tdmi";
}
/// getLLVMArchSuffixForARM - Get the LLVM arch name to use for a particular
/// CPU.
//
// FIXME: This is redundant with -mcpu, why does LLVM use this.
// FIXME: tblgen this, or kill it!
static const char *getLLVMArchSuffixForARM(StringRef CPU) {
if (CPU == "arm7tdmi" || CPU == "arm7tdmi-s" || CPU == "arm710t" ||
CPU == "arm720t" || CPU == "arm9" || CPU == "arm9tdmi" ||
CPU == "arm920" || CPU == "arm920t" || CPU == "arm922t" ||
CPU == "arm940t" || CPU == "ep9312")
return "v4t";
if (CPU == "arm10tdmi" || CPU == "arm1020t")
return "v5";
if (CPU == "arm9e" || CPU == "arm926ej-s" || CPU == "arm946e-s" ||
CPU == "arm966e-s" || CPU == "arm968e-s" || CPU == "arm10e" ||
CPU == "arm1020e" || CPU == "arm1022e" || CPU == "xscale" ||
CPU == "iwmmxt")
return "v5e";
if (CPU == "arm1136j-s" || CPU == "arm1136jf-s" || CPU == "arm1176jz-s" ||
CPU == "arm1176jzf-s" || CPU == "mpcorenovfp" || CPU == "mpcore")
return "v6";
if (CPU == "arm1156t2-s" || CPU == "arm1156t2f-s")
return "v6t2";
if (CPU == "cortex-a8" || CPU == "cortex-a9")
return "v7";
if (CPU == "cortex-m3")
return "v7m";
if (CPU == "cortex-m0")
return "v6m";
return "";
}
std::string ToolChain::ComputeLLVMTriple(const ArgList &Args,
types::ID InputType) const {
switch (getTriple().getArch()) {
default:
return getTripleString();
case llvm::Triple::arm:
case llvm::Triple::thumb: {
// FIXME: Factor into subclasses.
llvm::Triple Triple = getTriple();
// Thumb2 is the default for V7 on Darwin.
//
// FIXME: Thumb should just be another -target-feaure, not in the triple.
StringRef Suffix =
getLLVMArchSuffixForARM(getARMTargetCPU(Args, Triple));
bool ThumbDefault = (Suffix == "v7" && getTriple().isOSDarwin());
std::string ArchName = "arm";
// Assembly files should start in ARM mode.
if (InputType != types::TY_PP_Asm &&
Args.hasFlag(options::OPT_mthumb, options::OPT_mno_thumb, ThumbDefault))
ArchName = "thumb";
Triple.setArchName(ArchName + Suffix.str());
return Triple.getTriple();
}
}
}
std::string ToolChain::ComputeEffectiveClangTriple(const ArgList &Args,
types::ID InputType) const {
// Diagnose use of Darwin OS deployment target arguments on non-Darwin.
if (Arg *A = Args.getLastArg(options::OPT_mmacosx_version_min_EQ,
options::OPT_miphoneos_version_min_EQ,
options::OPT_mios_simulator_version_min_EQ))
getDriver().Diag(diag::err_drv_clang_unsupported)
<< A->getAsString(Args);
return ComputeLLVMTriple(Args, InputType);
}
void ToolChain::AddClangSystemIncludeArgs(const ArgList &DriverArgs,
ArgStringList &CC1Args) const {
// Each toolchain should provide the appropriate include flags.
}
ToolChain::CXXStdlibType ToolChain::GetCXXStdlibType(const ArgList &Args) const{
if (Arg *A = Args.getLastArg(options::OPT_stdlib_EQ)) {
StringRef Value = A->getValue(Args);
if (Value == "libc++")
return ToolChain::CST_Libcxx;
if (Value == "libstdc++")
return ToolChain::CST_Libstdcxx;
getDriver().Diag(diag::err_drv_invalid_stdlib_name)
<< A->getAsString(Args);
}
return ToolChain::CST_Libstdcxx;
}
void ToolChain::AddClangCXXStdlibIncludeArgs(const ArgList &DriverArgs,
ArgStringList &CC1Args) const {
// Header search paths should be handled by each of the subclasses.
// Historically, they have not been, and instead have been handled inside of
// the CC1-layer frontend. As the logic is hoisted out, this generic function
// will slowly stop being called.
//
// While it is being called, replicate a bit of a hack to propagate the
// '-stdlib=' flag down to CC1 so that it can in turn customize the C++
// header search paths with it. Once all systems are overriding this
// function, the CC1 flag and this line can be removed.
DriverArgs.AddAllArgs(CC1Args, options::OPT_stdlib_EQ);
}
void ToolChain::AddCXXStdlibLibArgs(const ArgList &Args,
ArgStringList &CmdArgs) const {
CXXStdlibType Type = GetCXXStdlibType(Args);
switch (Type) {
case ToolChain::CST_Libcxx:
CmdArgs.push_back("-lc++");
break;
case ToolChain::CST_Libstdcxx:
CmdArgs.push_back("-lstdc++");
break;
}
}
void ToolChain::AddCCKextLibArgs(const ArgList &Args,
ArgStringList &CmdArgs) const {
CmdArgs.push_back("-lcc_kext");
}
|