1 //===-- PPCMCTargetDesc.cpp - PowerPC Target Descriptions -----------------===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 // 10 // This file provides PowerPC specific target descriptions. 11 // 12 //===----------------------------------------------------------------------===// 13 14 #include "PPCMCTargetDesc.h" 15 #include "InstPrinter/PPCInstPrinter.h" 16 #include "PPCMCAsmInfo.h" 17 #include "PPCTargetStreamer.h" 18 #include "llvm/MC/MCCodeGenInfo.h" 19 #include "llvm/MC/MCInstrInfo.h" 20 #include "llvm/MC/MCRegisterInfo.h" 21 #include "llvm/MC/MCStreamer.h" 22 #include "llvm/MC/MCSubtargetInfo.h" 23 #include "llvm/MC/MCSymbol.h" 24 #include "llvm/MC/MachineLocation.h" 25 #include "llvm/Support/ErrorHandling.h" 26 #include "llvm/Support/FormattedStream.h" 27 #include "llvm/Support/TargetRegistry.h" 28 29 #define GET_INSTRINFO_MC_DESC 30 #include "PPCGenInstrInfo.inc" 31 32 #define GET_SUBTARGETINFO_MC_DESC 33 #include "PPCGenSubtargetInfo.inc" 34 35 #define GET_REGINFO_MC_DESC 36 #include "PPCGenRegisterInfo.inc" 37 38 using namespace llvm; 39 40 // Pin the vtable to this file. 41 PPCTargetStreamer::~PPCTargetStreamer() {} 42 43 static MCInstrInfo *createPPCMCInstrInfo() { 44 MCInstrInfo *X = new MCInstrInfo(); 45 InitPPCMCInstrInfo(X); 46 return X; 47 } 48 49 static MCRegisterInfo *createPPCMCRegisterInfo(StringRef TT) { 50 Triple TheTriple(TT); 51 bool isPPC64 = (TheTriple.getArch() == Triple::ppc64 || 52 TheTriple.getArch() == Triple::ppc64le); 53 unsigned Flavour = isPPC64 ? 0 : 1; 54 unsigned RA = isPPC64 ? PPC::LR8 : PPC::LR; 55 56 MCRegisterInfo *X = new MCRegisterInfo(); 57 InitPPCMCRegisterInfo(X, RA, Flavour, Flavour); 58 return X; 59 } 60 61 static MCSubtargetInfo *createPPCMCSubtargetInfo(StringRef TT, StringRef CPU, 62 StringRef FS) { 63 MCSubtargetInfo *X = new MCSubtargetInfo(); 64 InitPPCMCSubtargetInfo(X, TT, CPU, FS); 65 return X; 66 } 67 68 static MCAsmInfo *createPPCMCAsmInfo(const MCRegisterInfo &MRI, StringRef TT) { 69 Triple TheTriple(TT); 70 bool isPPC64 = (TheTriple.getArch() == Triple::ppc64 || 71 TheTriple.getArch() == Triple::ppc64le); 72 73 MCAsmInfo *MAI; 74 if (TheTriple.isOSDarwin()) 75 MAI = new PPCMCAsmInfoDarwin(isPPC64, TheTriple); 76 else 77 MAI = new PPCLinuxMCAsmInfo(isPPC64); 78 79 // Initial state of the frame pointer is R1. 80 unsigned Reg = isPPC64 ? PPC::X1 : PPC::R1; 81 MCCFIInstruction Inst = 82 MCCFIInstruction::createDefCfa(0, MRI.getDwarfRegNum(Reg, true), 0); 83 MAI->addInitialFrameState(Inst); 84 85 return MAI; 86 } 87 88 static MCCodeGenInfo *createPPCMCCodeGenInfo(StringRef TT, Reloc::Model RM, 89 CodeModel::Model CM, 90 CodeGenOpt::Level OL) { 91 MCCodeGenInfo *X = new MCCodeGenInfo(); 92 93 if (RM == Reloc::Default) { 94 Triple T(TT); 95 if (T.isOSDarwin()) 96 RM = Reloc::DynamicNoPIC; 97 else 98 RM = Reloc::Static; 99 } 100 if (CM == CodeModel::Default) { 101 Triple T(TT); 102 if (!T.isOSDarwin() && 103 (T.getArch() == Triple::ppc64 || T.getArch() == Triple::ppc64le)) 104 CM = CodeModel::Medium; 105 } 106 X->InitMCCodeGenInfo(RM, CM, OL); 107 return X; 108 } 109 110 namespace { 111 class PPCTargetAsmStreamer : public PPCTargetStreamer { 112 formatted_raw_ostream &OS; 113 114 public: 115 PPCTargetAsmStreamer(formatted_raw_ostream &OS) : OS(OS) {} 116 virtual void emitTCEntry(const MCSymbol &S) { 117 OS << "\t.tc "; 118 OS << S.getName(); 119 OS << "[TC],"; 120 OS << S.getName(); 121 OS << '\n'; 122 } 123 }; 124 125 class PPCTargetELFStreamer : public PPCTargetStreamer { 126 virtual void emitTCEntry(const MCSymbol &S) { 127 // Creates a R_PPC64_TOC relocation 128 Streamer->EmitSymbolValue(&S, 8); 129 } 130 }; 131 } 132 133 // This is duplicated code. Refactor this. 134 static MCStreamer *createMCStreamer(const Target &T, StringRef TT, 135 MCContext &Ctx, MCAsmBackend &MAB, 136 raw_ostream &OS, 137 MCCodeEmitter *Emitter, 138 bool RelaxAll, 139 bool NoExecStack) { 140 if (Triple(TT).isOSDarwin()) 141 return createMachOStreamer(Ctx, MAB, OS, Emitter, RelaxAll); 142 143 PPCTargetStreamer *S = new PPCTargetELFStreamer(); 144 return createELFStreamer(Ctx, S, MAB, OS, Emitter, RelaxAll, NoExecStack); 145 } 146 147 static MCStreamer * 148 createMCAsmStreamer(MCContext &Ctx, formatted_raw_ostream &OS, 149 bool isVerboseAsm, bool useLoc, bool useCFI, 150 bool useDwarfDirectory, MCInstPrinter *InstPrint, 151 MCCodeEmitter *CE, MCAsmBackend *TAB, bool ShowInst) { 152 PPCTargetStreamer *S = new PPCTargetAsmStreamer(OS); 153 154 return llvm::createAsmStreamer(Ctx, S, OS, isVerboseAsm, useLoc, useCFI, 155 useDwarfDirectory, InstPrint, CE, TAB, 156 ShowInst); 157 } 158 159 static MCInstPrinter *createPPCMCInstPrinter(const Target &T, 160 unsigned SyntaxVariant, 161 const MCAsmInfo &MAI, 162 const MCInstrInfo &MII, 163 const MCRegisterInfo &MRI, 164 const MCSubtargetInfo &STI) { 165 bool isDarwin = Triple(STI.getTargetTriple()).isOSDarwin(); 166 return new PPCInstPrinter(MAI, MII, MRI, isDarwin); 167 } 168 169 extern "C" void LLVMInitializePowerPCTargetMC() { 170 // Register the MC asm info. 171 RegisterMCAsmInfoFn C(ThePPC32Target, createPPCMCAsmInfo); 172 RegisterMCAsmInfoFn D(ThePPC64Target, createPPCMCAsmInfo); 173 RegisterMCAsmInfoFn E(ThePPC64LETarget, createPPCMCAsmInfo); 174 175 // Register the MC codegen info. 176 TargetRegistry::RegisterMCCodeGenInfo(ThePPC32Target, createPPCMCCodeGenInfo); 177 TargetRegistry::RegisterMCCodeGenInfo(ThePPC64Target, createPPCMCCodeGenInfo); 178 TargetRegistry::RegisterMCCodeGenInfo(ThePPC64LETarget, 179 createPPCMCCodeGenInfo); 180 181 // Register the MC instruction info. 182 TargetRegistry::RegisterMCInstrInfo(ThePPC32Target, createPPCMCInstrInfo); 183 TargetRegistry::RegisterMCInstrInfo(ThePPC64Target, createPPCMCInstrInfo); 184 TargetRegistry::RegisterMCInstrInfo(ThePPC64LETarget, 185 createPPCMCInstrInfo); 186 187 // Register the MC register info. 188 TargetRegistry::RegisterMCRegInfo(ThePPC32Target, createPPCMCRegisterInfo); 189 TargetRegistry::RegisterMCRegInfo(ThePPC64Target, createPPCMCRegisterInfo); 190 TargetRegistry::RegisterMCRegInfo(ThePPC64LETarget, createPPCMCRegisterInfo); 191 192 // Register the MC subtarget info. 193 TargetRegistry::RegisterMCSubtargetInfo(ThePPC32Target, 194 createPPCMCSubtargetInfo); 195 TargetRegistry::RegisterMCSubtargetInfo(ThePPC64Target, 196 createPPCMCSubtargetInfo); 197 TargetRegistry::RegisterMCSubtargetInfo(ThePPC64LETarget, 198 createPPCMCSubtargetInfo); 199 200 // Register the MC Code Emitter 201 TargetRegistry::RegisterMCCodeEmitter(ThePPC32Target, createPPCMCCodeEmitter); 202 TargetRegistry::RegisterMCCodeEmitter(ThePPC64Target, createPPCMCCodeEmitter); 203 TargetRegistry::RegisterMCCodeEmitter(ThePPC64LETarget, 204 createPPCMCCodeEmitter); 205 206 // Register the asm backend. 207 TargetRegistry::RegisterMCAsmBackend(ThePPC32Target, createPPCAsmBackend); 208 TargetRegistry::RegisterMCAsmBackend(ThePPC64Target, createPPCAsmBackend); 209 TargetRegistry::RegisterMCAsmBackend(ThePPC64LETarget, createPPCAsmBackend); 210 211 // Register the object streamer. 212 TargetRegistry::RegisterMCObjectStreamer(ThePPC32Target, createMCStreamer); 213 TargetRegistry::RegisterMCObjectStreamer(ThePPC64Target, createMCStreamer); 214 TargetRegistry::RegisterMCObjectStreamer(ThePPC64LETarget, createMCStreamer); 215 216 // Register the asm streamer. 217 TargetRegistry::RegisterAsmStreamer(ThePPC32Target, createMCAsmStreamer); 218 TargetRegistry::RegisterAsmStreamer(ThePPC64Target, createMCAsmStreamer); 219 TargetRegistry::RegisterAsmStreamer(ThePPC64LETarget, createMCAsmStreamer); 220 221 // Register the MCInstPrinter. 222 TargetRegistry::RegisterMCInstPrinter(ThePPC32Target, createPPCMCInstPrinter); 223 TargetRegistry::RegisterMCInstPrinter(ThePPC64Target, createPPCMCInstPrinter); 224 TargetRegistry::RegisterMCInstPrinter(ThePPC64LETarget, 225 createPPCMCInstPrinter); 226 } 227