1 //===--- MSP430.cpp - MSP430 Helpers for Tools ------------------*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
11 #include "CommonArgs.h"
13 #include "InputInfo.h"
14 #include "clang/Driver/Compilation.h"
15 #include "clang/Driver/Multilib.h"
16 #include "clang/Driver/Options.h"
17 #include "llvm/Option/ArgList.h"
18 #include "llvm/Support/FileSystem.h"
19 #include "llvm/Support/Path.h"
21 using namespace clang::driver;
22 using namespace clang::driver::toolchains;
23 using namespace clang::driver::tools;
24 using namespace clang;
25 using namespace llvm::opt;
27 static bool isSupportedMCU(const StringRef MCU) {
28 return llvm::StringSwitch<bool>(MCU)
29 #define MSP430_MCU(NAME) .Case(NAME, true)
30 #include "clang/Basic/MSP430Target.def"
34 static StringRef getSupportedHWMult(const Arg *MCU) {
38 return llvm::StringSwitch<StringRef>(MCU->getValue())
39 #define MSP430_MCU_FEAT(NAME, HWMULT) .Case(NAME, HWMULT)
40 #include "clang/Basic/MSP430Target.def"
44 static StringRef getHWMultLib(const ArgList &Args) {
45 StringRef HWMult = Args.getLastArgValue(options::OPT_mhwmult_EQ, "auto");
46 if (HWMult == "auto") {
47 HWMult = getSupportedHWMult(Args.getLastArg(options::OPT_mmcu_EQ));
50 return llvm::StringSwitch<StringRef>(HWMult)
51 .Case("16bit", "-lmul_16")
52 .Case("32bit", "-lmul_32")
53 .Case("f5series", "-lmul_f5")
54 .Default("-lmul_none");
57 void msp430::getMSP430TargetFeatures(const Driver &D, const ArgList &Args,
58 std::vector<StringRef> &Features) {
59 const Arg *MCU = Args.getLastArg(options::OPT_mmcu_EQ);
60 if (MCU && !isSupportedMCU(MCU->getValue())) {
61 D.Diag(diag::err_drv_clang_unsupported) << MCU->getValue();
65 const Arg *HWMultArg = Args.getLastArg(options::OPT_mhwmult_EQ);
66 if (!MCU && !HWMultArg)
69 StringRef HWMult = HWMultArg ? HWMultArg->getValue() : "auto";
70 StringRef SupportedHWMult = getSupportedHWMult(MCU);
72 if (HWMult == "auto") {
73 // 'auto' - deduce hw multiplier support based on mcu name provided.
74 // If no mcu name is provided, assume no hw multiplier is supported.
76 D.Diag(clang::diag::warn_drv_msp430_hwmult_no_device);
77 HWMult = SupportedHWMult;
80 if (HWMult == "none") {
81 // 'none' - disable hw multiplier.
82 Features.push_back("-hwmult16");
83 Features.push_back("-hwmult32");
84 Features.push_back("-hwmultf5");
88 if (MCU && SupportedHWMult == "none")
89 D.Diag(clang::diag::warn_drv_msp430_hwmult_unsupported) << HWMult;
90 if (MCU && HWMult != SupportedHWMult)
91 D.Diag(clang::diag::warn_drv_msp430_hwmult_mismatch)
92 << SupportedHWMult << HWMult;
94 if (HWMult == "16bit") {
95 // '16bit' - for 16-bit only hw multiplier.
96 Features.push_back("+hwmult16");
97 } else if (HWMult == "32bit") {
98 // '32bit' - for 16/32-bit hw multiplier.
99 Features.push_back("+hwmult32");
100 } else if (HWMult == "f5series") {
101 // 'f5series' - for 16/32-bit hw multiplier supported by F5 series mcus.
102 Features.push_back("+hwmultf5");
104 D.Diag(clang::diag::err_drv_unsupported_option_argument)
105 << HWMultArg->getAsString(Args) << HWMult;
110 MSP430ToolChain::MSP430ToolChain(const Driver &D, const llvm::Triple &Triple,
112 : Generic_ELF(D, Triple, Args) {
114 StringRef MultilibSuf = "";
116 GCCInstallation.init(Triple, Args);
117 if (GCCInstallation.isValid()) {
118 MultilibSuf = GCCInstallation.getMultilib().gccSuffix();
120 SmallString<128> GCCBinPath;
121 llvm::sys::path::append(GCCBinPath,
122 GCCInstallation.getParentLibPath(), "..", "bin");
123 addPathIfExists(D, GCCBinPath, getProgramPaths());
125 SmallString<128> GCCRtPath;
126 llvm::sys::path::append(GCCRtPath,
127 GCCInstallation.getInstallPath(), MultilibSuf);
128 addPathIfExists(D, GCCRtPath, getFilePaths());
131 SmallString<128> SysRootDir(computeSysRoot());
132 llvm::sys::path::append(SysRootDir, "lib", MultilibSuf);
133 addPathIfExists(D, SysRootDir, getFilePaths());
136 std::string MSP430ToolChain::computeSysRoot() const {
137 if (!getDriver().SysRoot.empty())
138 return getDriver().SysRoot;
140 SmallString<128> Dir;
141 if (GCCInstallation.isValid())
142 llvm::sys::path::append(Dir, GCCInstallation.getParentLibPath(), "..",
143 GCCInstallation.getTriple().str());
145 llvm::sys::path::append(Dir, getDriver().Dir, "..", getTriple().str());
150 void MSP430ToolChain::AddClangSystemIncludeArgs(const ArgList &DriverArgs,
151 ArgStringList &CC1Args) const {
152 if (DriverArgs.hasArg(options::OPT_nostdinc) ||
153 DriverArgs.hasArg(options::OPT_nostdlibinc))
156 SmallString<128> Dir(computeSysRoot());
157 llvm::sys::path::append(Dir, "include");
158 addSystemInclude(DriverArgs, CC1Args, Dir.str());
161 void MSP430ToolChain::addClangTargetOptions(const ArgList &DriverArgs,
162 ArgStringList &CC1Args,
163 Action::OffloadKind) const {
164 CC1Args.push_back("-nostdsysteminc");
166 const auto *MCUArg = DriverArgs.getLastArg(options::OPT_mmcu_EQ);
170 const StringRef MCU = MCUArg->getValue();
171 if (MCU.startswith("msp430i")) {
172 // 'i' should be in lower case as it's defined in TI MSP430-GCC headers
173 CC1Args.push_back(DriverArgs.MakeArgString(
174 "-D__MSP430i" + MCU.drop_front(7).upper() + "__"));
176 CC1Args.push_back(DriverArgs.MakeArgString("-D__" + MCU.upper() + "__"));
180 Tool *MSP430ToolChain::buildLinker() const {
181 return new tools::msp430::Linker(*this);
184 void msp430::Linker::ConstructJob(Compilation &C, const JobAction &JA,
185 const InputInfo &Output,
186 const InputInfoList &Inputs,
188 const char *LinkingOutput) const {
189 const ToolChain &ToolChain = getToolChain();
190 const Driver &D = ToolChain.getDriver();
191 std::string Linker = ToolChain.GetProgramPath(getShortName());
192 ArgStringList CmdArgs;
194 if (!D.SysRoot.empty())
195 CmdArgs.push_back(Args.MakeArgString("--sysroot=" + D.SysRoot));
197 Args.AddAllArgs(CmdArgs, options::OPT_L);
198 ToolChain.AddFilePathLibArgs(Args, CmdArgs);
200 if (!Args.hasArg(options::OPT_T)) {
201 if (const Arg *MCUArg = Args.getLastArg(options::OPT_mmcu_EQ))
203 Args.MakeArgString("-T" + StringRef(MCUArg->getValue()) + ".ld"));
205 Args.AddAllArgs(CmdArgs, options::OPT_T);
208 if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles)) {
209 CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crt0.o")));
210 CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crtbegin.o")));
213 AddLinkerInputs(getToolChain(), Inputs, Args, CmdArgs, JA);
215 CmdArgs.push_back("--start-group");
216 CmdArgs.push_back(Args.MakeArgString(getHWMultLib(Args)));
217 CmdArgs.push_back("-lgcc");
218 if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs)) {
219 CmdArgs.push_back("-lc");
220 CmdArgs.push_back("-lcrt");
221 CmdArgs.push_back("-lnosys");
223 CmdArgs.push_back("--end-group");
225 if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles)) {
226 CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crtend.o")));
227 CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crtn.o")));
229 CmdArgs.push_back("-o");
230 CmdArgs.push_back(Output.getFilename());
231 C.addCommand(llvm::make_unique<Command>(JA, *this, Args.MakeArgString(Linker),