1 //===--- MSP430.cpp - MSP430 Helpers for Tools ------------------*- 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 "MSP430.h" 10 #include "CommonArgs.h" 11 #include "Gnu.h" 12 #include "InputInfo.h" 13 #include "clang/Driver/Compilation.h" 14 #include "clang/Driver/Multilib.h" 15 #include "clang/Driver/Options.h" 16 #include "llvm/Option/ArgList.h" 17 #include "llvm/Support/FileSystem.h" 18 #include "llvm/Support/Path.h" 19 20 using namespace clang::driver; 21 using namespace clang::driver::toolchains; 22 using namespace clang::driver::tools; 23 using namespace clang; 24 using namespace llvm::opt; 25 26 static bool isSupportedMCU(const StringRef MCU) { 27 return llvm::StringSwitch<bool>(MCU) 28 #define MSP430_MCU(NAME) .Case(NAME, true) 29 #include "clang/Basic/MSP430Target.def" 30 .Default(false); 31 } 32 33 static StringRef getSupportedHWMult(const Arg *MCU) { 34 if (!MCU) 35 return "none"; 36 37 return llvm::StringSwitch<StringRef>(MCU->getValue()) 38 #define MSP430_MCU_FEAT(NAME, HWMULT) .Case(NAME, HWMULT) 39 #include "clang/Basic/MSP430Target.def" 40 .Default("none"); 41 } 42 43 static StringRef getHWMultLib(const ArgList &Args) { 44 StringRef HWMult = Args.getLastArgValue(options::OPT_mhwmult_EQ, "auto"); 45 if (HWMult == "auto") { 46 HWMult = getSupportedHWMult(Args.getLastArg(options::OPT_mmcu_EQ)); 47 } 48 49 return llvm::StringSwitch<StringRef>(HWMult) 50 .Case("16bit", "-lmul_16") 51 .Case("32bit", "-lmul_32") 52 .Case("f5series", "-lmul_f5") 53 .Default("-lmul_none"); 54 } 55 56 void msp430::getMSP430TargetFeatures(const Driver &D, const ArgList &Args, 57 std::vector<StringRef> &Features) { 58 const Arg *MCU = Args.getLastArg(options::OPT_mmcu_EQ); 59 if (MCU && !isSupportedMCU(MCU->getValue())) { 60 D.Diag(diag::err_drv_clang_unsupported) << MCU->getValue(); 61 return; 62 } 63 64 const Arg *HWMultArg = Args.getLastArg(options::OPT_mhwmult_EQ); 65 if (!MCU && !HWMultArg) 66 return; 67 68 StringRef HWMult = HWMultArg ? HWMultArg->getValue() : "auto"; 69 StringRef SupportedHWMult = getSupportedHWMult(MCU); 70 71 if (HWMult == "auto") { 72 // 'auto' - deduce hw multiplier support based on mcu name provided. 73 // If no mcu name is provided, assume no hw multiplier is supported. 74 if (!MCU) 75 D.Diag(clang::diag::warn_drv_msp430_hwmult_no_device); 76 HWMult = SupportedHWMult; 77 } 78 79 if (HWMult == "none") { 80 // 'none' - disable hw multiplier. 81 Features.push_back("-hwmult16"); 82 Features.push_back("-hwmult32"); 83 Features.push_back("-hwmultf5"); 84 return; 85 } 86 87 if (MCU && SupportedHWMult == "none") 88 D.Diag(clang::diag::warn_drv_msp430_hwmult_unsupported) << HWMult; 89 if (MCU && HWMult != SupportedHWMult) 90 D.Diag(clang::diag::warn_drv_msp430_hwmult_mismatch) 91 << SupportedHWMult << HWMult; 92 93 if (HWMult == "16bit") { 94 // '16bit' - for 16-bit only hw multiplier. 95 Features.push_back("+hwmult16"); 96 } else if (HWMult == "32bit") { 97 // '32bit' - for 16/32-bit hw multiplier. 98 Features.push_back("+hwmult32"); 99 } else if (HWMult == "f5series") { 100 // 'f5series' - for 16/32-bit hw multiplier supported by F5 series mcus. 101 Features.push_back("+hwmultf5"); 102 } else { 103 D.Diag(clang::diag::err_drv_unsupported_option_argument) 104 << HWMultArg->getAsString(Args) << HWMult; 105 } 106 } 107 108 /// MSP430 Toolchain 109 MSP430ToolChain::MSP430ToolChain(const Driver &D, const llvm::Triple &Triple, 110 const ArgList &Args) 111 : Generic_ELF(D, Triple, Args) { 112 113 StringRef MultilibSuf = ""; 114 115 GCCInstallation.init(Triple, Args); 116 if (GCCInstallation.isValid()) { 117 MultilibSuf = GCCInstallation.getMultilib().gccSuffix(); 118 119 SmallString<128> GCCBinPath; 120 llvm::sys::path::append(GCCBinPath, 121 GCCInstallation.getParentLibPath(), "..", "bin"); 122 addPathIfExists(D, GCCBinPath, getProgramPaths()); 123 124 SmallString<128> GCCRtPath; 125 llvm::sys::path::append(GCCRtPath, 126 GCCInstallation.getInstallPath(), MultilibSuf); 127 addPathIfExists(D, GCCRtPath, getFilePaths()); 128 } 129 130 SmallString<128> SysRootDir(computeSysRoot()); 131 llvm::sys::path::append(SysRootDir, "lib", MultilibSuf); 132 addPathIfExists(D, SysRootDir, getFilePaths()); 133 } 134 135 std::string MSP430ToolChain::computeSysRoot() const { 136 if (!getDriver().SysRoot.empty()) 137 return getDriver().SysRoot; 138 139 SmallString<128> Dir; 140 if (GCCInstallation.isValid()) 141 llvm::sys::path::append(Dir, GCCInstallation.getParentLibPath(), "..", 142 GCCInstallation.getTriple().str()); 143 else 144 llvm::sys::path::append(Dir, getDriver().Dir, "..", getTriple().str()); 145 146 return std::string(Dir.str()); 147 } 148 149 void MSP430ToolChain::AddClangSystemIncludeArgs(const ArgList &DriverArgs, 150 ArgStringList &CC1Args) const { 151 if (DriverArgs.hasArg(options::OPT_nostdinc) || 152 DriverArgs.hasArg(options::OPT_nostdlibinc)) 153 return; 154 155 SmallString<128> Dir(computeSysRoot()); 156 llvm::sys::path::append(Dir, "include"); 157 addSystemInclude(DriverArgs, CC1Args, Dir.str()); 158 } 159 160 void MSP430ToolChain::addClangTargetOptions(const ArgList &DriverArgs, 161 ArgStringList &CC1Args, 162 Action::OffloadKind) const { 163 CC1Args.push_back("-nostdsysteminc"); 164 165 const auto *MCUArg = DriverArgs.getLastArg(options::OPT_mmcu_EQ); 166 if (!MCUArg) 167 return; 168 169 const StringRef MCU = MCUArg->getValue(); 170 if (MCU.startswith("msp430i")) { 171 // 'i' should be in lower case as it's defined in TI MSP430-GCC headers 172 CC1Args.push_back(DriverArgs.MakeArgString( 173 "-D__MSP430i" + MCU.drop_front(7).upper() + "__")); 174 } else { 175 CC1Args.push_back(DriverArgs.MakeArgString("-D__" + MCU.upper() + "__")); 176 } 177 } 178 179 Tool *MSP430ToolChain::buildLinker() const { 180 return new tools::msp430::Linker(*this); 181 } 182 183 void msp430::Linker::ConstructJob(Compilation &C, const JobAction &JA, 184 const InputInfo &Output, 185 const InputInfoList &Inputs, 186 const ArgList &Args, 187 const char *LinkingOutput) const { 188 const ToolChain &ToolChain = getToolChain(); 189 const Driver &D = ToolChain.getDriver(); 190 std::string Linker = ToolChain.GetProgramPath(getShortName()); 191 ArgStringList CmdArgs; 192 193 if (!D.SysRoot.empty()) 194 CmdArgs.push_back(Args.MakeArgString("--sysroot=" + D.SysRoot)); 195 196 Args.AddAllArgs(CmdArgs, options::OPT_L); 197 ToolChain.AddFilePathLibArgs(Args, CmdArgs); 198 199 if (!Args.hasArg(options::OPT_T)) { 200 if (const Arg *MCUArg = Args.getLastArg(options::OPT_mmcu_EQ)) 201 CmdArgs.push_back( 202 Args.MakeArgString("-T" + StringRef(MCUArg->getValue()) + ".ld")); 203 } else { 204 Args.AddAllArgs(CmdArgs, options::OPT_T); 205 } 206 207 if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles)) { 208 CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crt0.o"))); 209 CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crtbegin.o"))); 210 } 211 212 AddLinkerInputs(getToolChain(), Inputs, Args, CmdArgs, JA); 213 214 CmdArgs.push_back("--start-group"); 215 CmdArgs.push_back(Args.MakeArgString(getHWMultLib(Args))); 216 CmdArgs.push_back("-lgcc"); 217 if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs)) { 218 CmdArgs.push_back("-lc"); 219 CmdArgs.push_back("-lcrt"); 220 CmdArgs.push_back("-lnosys"); 221 } 222 CmdArgs.push_back("--end-group"); 223 224 if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles)) { 225 CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crtend.o"))); 226 CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crtn.o"))); 227 } 228 CmdArgs.push_back("-o"); 229 CmdArgs.push_back(Output.getFilename()); 230 C.addCommand( 231 std::make_unique<Command>(JA, *this, ResponseFileSupport::AtFileCurCP(), 232 Args.MakeArgString(Linker), CmdArgs, Inputs)); 233 } 234