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
|
//===--- MSP430.cpp - MSP430 Helpers for Tools ------------------*- 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 "MSP430.h"
#include "CommonArgs.h"
#include "Gnu.h"
#include "InputInfo.h"
#include "clang/Driver/Compilation.h"
#include "clang/Driver/Multilib.h"
#include "clang/Driver/Options.h"
#include "llvm/Option/ArgList.h"
#include "llvm/Support/FileSystem.h"
#include "llvm/Support/Path.h"
using namespace clang::driver;
using namespace clang::driver::toolchains;
using namespace clang::driver::tools;
using namespace clang;
using namespace llvm::opt;
static bool isSupportedMCU(const StringRef MCU) {
return llvm::StringSwitch<bool>(MCU)
#define MSP430_MCU(NAME) .Case(NAME, true)
#include "clang/Basic/MSP430Target.def"
.Default(false);
}
static StringRef getSupportedHWMult(const Arg *MCU) {
if (!MCU)
return "none";
return llvm::StringSwitch<StringRef>(MCU->getValue())
#define MSP430_MCU_FEAT(NAME, HWMULT) .Case(NAME, HWMULT)
#include "clang/Basic/MSP430Target.def"
.Default("none");
}
static StringRef getHWMultLib(const ArgList &Args) {
StringRef HWMult = Args.getLastArgValue(options::OPT_mhwmult_EQ, "auto");
if (HWMult == "auto") {
HWMult = getSupportedHWMult(Args.getLastArg(options::OPT_mmcu_EQ));
}
return llvm::StringSwitch<StringRef>(HWMult)
.Case("16bit", "-lmul_16")
.Case("32bit", "-lmul_32")
.Case("f5series", "-lmul_f5")
.Default("-lmul_none");
}
void msp430::getMSP430TargetFeatures(const Driver &D, const ArgList &Args,
std::vector<StringRef> &Features) {
const Arg *MCU = Args.getLastArg(options::OPT_mmcu_EQ);
if (MCU && !isSupportedMCU(MCU->getValue())) {
D.Diag(diag::err_drv_clang_unsupported) << MCU->getValue();
return;
}
const Arg *HWMultArg = Args.getLastArg(options::OPT_mhwmult_EQ);
if (!MCU && !HWMultArg)
return;
StringRef HWMult = HWMultArg ? HWMultArg->getValue() : "auto";
StringRef SupportedHWMult = getSupportedHWMult(MCU);
if (HWMult == "auto") {
// 'auto' - deduce hw multiplier support based on mcu name provided.
// If no mcu name is provided, assume no hw multiplier is supported.
if (!MCU)
D.Diag(clang::diag::warn_drv_msp430_hwmult_no_device);
HWMult = SupportedHWMult;
}
if (HWMult == "none") {
// 'none' - disable hw multiplier.
Features.push_back("-hwmult16");
Features.push_back("-hwmult32");
Features.push_back("-hwmultf5");
return;
}
if (MCU && SupportedHWMult == "none")
D.Diag(clang::diag::warn_drv_msp430_hwmult_unsupported) << HWMult;
if (MCU && HWMult != SupportedHWMult)
D.Diag(clang::diag::warn_drv_msp430_hwmult_mismatch)
<< SupportedHWMult << HWMult;
if (HWMult == "16bit") {
// '16bit' - for 16-bit only hw multiplier.
Features.push_back("+hwmult16");
} else if (HWMult == "32bit") {
// '32bit' - for 16/32-bit hw multiplier.
Features.push_back("+hwmult32");
} else if (HWMult == "f5series") {
// 'f5series' - for 16/32-bit hw multiplier supported by F5 series mcus.
Features.push_back("+hwmultf5");
} else {
D.Diag(clang::diag::err_drv_unsupported_option_argument)
<< HWMultArg->getAsString(Args) << HWMult;
}
}
/// MSP430 Toolchain
MSP430ToolChain::MSP430ToolChain(const Driver &D, const llvm::Triple &Triple,
const ArgList &Args)
: Generic_ELF(D, Triple, Args) {
StringRef MultilibSuf = "";
GCCInstallation.init(Triple, Args);
if (GCCInstallation.isValid()) {
MultilibSuf = GCCInstallation.getMultilib().gccSuffix();
SmallString<128> GCCBinPath;
llvm::sys::path::append(GCCBinPath,
GCCInstallation.getParentLibPath(), "..", "bin");
addPathIfExists(D, GCCBinPath, getProgramPaths());
SmallString<128> GCCRtPath;
llvm::sys::path::append(GCCRtPath,
GCCInstallation.getInstallPath(), MultilibSuf);
addPathIfExists(D, GCCRtPath, getFilePaths());
}
SmallString<128> SysRootDir(computeSysRoot());
llvm::sys::path::append(SysRootDir, "lib", MultilibSuf);
addPathIfExists(D, SysRootDir, getFilePaths());
}
std::string MSP430ToolChain::computeSysRoot() const {
if (!getDriver().SysRoot.empty())
return getDriver().SysRoot;
SmallString<128> Dir;
if (GCCInstallation.isValid())
llvm::sys::path::append(Dir, GCCInstallation.getParentLibPath(), "..",
GCCInstallation.getTriple().str());
else
llvm::sys::path::append(Dir, getDriver().Dir, "..", getTriple().str());
return Dir.str();
}
void MSP430ToolChain::AddClangSystemIncludeArgs(const ArgList &DriverArgs,
ArgStringList &CC1Args) const {
if (DriverArgs.hasArg(options::OPT_nostdinc) ||
DriverArgs.hasArg(options::OPT_nostdlibinc))
return;
SmallString<128> Dir(computeSysRoot());
llvm::sys::path::append(Dir, "include");
addSystemInclude(DriverArgs, CC1Args, Dir.str());
}
void MSP430ToolChain::addClangTargetOptions(const ArgList &DriverArgs,
ArgStringList &CC1Args,
Action::OffloadKind) const {
CC1Args.push_back("-nostdsysteminc");
const auto *MCUArg = DriverArgs.getLastArg(options::OPT_mmcu_EQ);
if (!MCUArg)
return;
const StringRef MCU = MCUArg->getValue();
if (MCU.startswith("msp430i")) {
// 'i' should be in lower case as it's defined in TI MSP430-GCC headers
CC1Args.push_back(DriverArgs.MakeArgString(
"-D__MSP430i" + MCU.drop_front(7).upper() + "__"));
} else {
CC1Args.push_back(DriverArgs.MakeArgString("-D__" + MCU.upper() + "__"));
}
}
Tool *MSP430ToolChain::buildLinker() const {
return new tools::msp430::Linker(*this);
}
void msp430::Linker::ConstructJob(Compilation &C, const JobAction &JA,
const InputInfo &Output,
const InputInfoList &Inputs,
const ArgList &Args,
const char *LinkingOutput) const {
const ToolChain &ToolChain = getToolChain();
const Driver &D = ToolChain.getDriver();
std::string Linker = ToolChain.GetProgramPath(getShortName());
ArgStringList CmdArgs;
if (!D.SysRoot.empty())
CmdArgs.push_back(Args.MakeArgString("--sysroot=" + D.SysRoot));
Args.AddAllArgs(CmdArgs, options::OPT_L);
ToolChain.AddFilePathLibArgs(Args, CmdArgs);
if (!Args.hasArg(options::OPT_T)) {
if (const Arg *MCUArg = Args.getLastArg(options::OPT_mmcu_EQ))
CmdArgs.push_back(
Args.MakeArgString("-T" + StringRef(MCUArg->getValue()) + ".ld"));
} else {
Args.AddAllArgs(CmdArgs, options::OPT_T);
}
if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles)) {
CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crt0.o")));
CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crtbegin.o")));
}
AddLinkerInputs(getToolChain(), Inputs, Args, CmdArgs, JA);
CmdArgs.push_back("--start-group");
CmdArgs.push_back(Args.MakeArgString(getHWMultLib(Args)));
CmdArgs.push_back("-lgcc");
if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs)) {
CmdArgs.push_back("-lc");
CmdArgs.push_back("-lcrt");
CmdArgs.push_back("-lnosys");
}
CmdArgs.push_back("--end-group");
if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles)) {
CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crtend.o")));
CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crtn.o")));
}
CmdArgs.push_back("-o");
CmdArgs.push_back(Output.getFilename());
C.addCommand(llvm::make_unique<Command>(JA, *this, Args.MakeArgString(Linker),
CmdArgs, Inputs));
}
|
