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 29using namespace llvm; 30 31#define GET_INSTRINFO_MC_DESC 32#include "PPCGenInstrInfo.inc" 33 34#define GET_SUBTARGETINFO_MC_DESC 35#include "PPCGenSubtargetInfo.inc" 36 37#define GET_REGINFO_MC_DESC 38#include "PPCGenRegisterInfo.inc" 39 40// Pin the vtable to this file. 41PPCTargetStreamer::~PPCTargetStreamer() {} 42PPCTargetStreamer::PPCTargetStreamer(MCStreamer &S) : MCTargetStreamer(S) {} 43 44static MCInstrInfo *createPPCMCInstrInfo() { 45 MCInstrInfo *X = new MCInstrInfo(); 46 InitPPCMCInstrInfo(X); 47 return X; 48} 49 50static MCRegisterInfo *createPPCMCRegisterInfo(StringRef TT) { 51 Triple TheTriple(TT); 52 bool isPPC64 = (TheTriple.getArch() == Triple::ppc64 || 53 TheTriple.getArch() == Triple::ppc64le); 54 unsigned Flavour = isPPC64 ? 0 : 1; 55 unsigned RA = isPPC64 ? PPC::LR8 : PPC::LR; 56 57 MCRegisterInfo *X = new MCRegisterInfo(); 58 InitPPCMCRegisterInfo(X, RA, Flavour, Flavour); 59 return X; 60} 61 62static MCSubtargetInfo *createPPCMCSubtargetInfo(StringRef TT, StringRef CPU, 63 StringRef FS) { 64 MCSubtargetInfo *X = new MCSubtargetInfo(); 65 InitPPCMCSubtargetInfo(X, TT, CPU, FS); 66 return X; 67} 68 69static MCAsmInfo *createPPCMCAsmInfo(const MCRegisterInfo &MRI, StringRef TT) { 70 Triple TheTriple(TT); 71 bool isPPC64 = (TheTriple.getArch() == Triple::ppc64 || 72 TheTriple.getArch() == Triple::ppc64le); 73 74 MCAsmInfo *MAI; 75 if (TheTriple.isOSDarwin()) 76 MAI = new PPCMCAsmInfoDarwin(isPPC64, TheTriple); 77 else 78 MAI = new PPCLinuxMCAsmInfo(isPPC64, TheTriple); 79 80 // Initial state of the frame pointer is R1. 81 unsigned Reg = isPPC64 ? PPC::X1 : PPC::R1; 82 MCCFIInstruction Inst = 83 MCCFIInstruction::createDefCfa(nullptr, MRI.getDwarfRegNum(Reg, true), 0); 84 MAI->addInitialFrameState(Inst); 85 86 return MAI; 87} 88 89static MCCodeGenInfo *createPPCMCCodeGenInfo(StringRef TT, Reloc::Model RM, 90 CodeModel::Model CM, 91 CodeGenOpt::Level OL) { 92 MCCodeGenInfo *X = new MCCodeGenInfo(); 93 94 if (RM == Reloc::Default) { 95 Triple T(TT); 96 if (T.isOSDarwin()) 97 RM = Reloc::DynamicNoPIC; 98 else 99 RM = Reloc::Static; 100 } 101 if (CM == CodeModel::Default) { 102 Triple T(TT); 103 if (!T.isOSDarwin() && 104 (T.getArch() == Triple::ppc64 || T.getArch() == Triple::ppc64le)) 105 CM = CodeModel::Medium; 106 } 107 X->InitMCCodeGenInfo(RM, CM, OL); 108 return X; 109} 110 111namespace { 112class PPCTargetAsmStreamer : public PPCTargetStreamer { 113 formatted_raw_ostream &OS; 114 115public: 116 PPCTargetAsmStreamer(MCStreamer &S, formatted_raw_ostream &OS) 117 : PPCTargetStreamer(S), OS(OS) {} 118 void emitTCEntry(const MCSymbol &S) override { 119 OS << "\t.tc "; 120 OS << S.getName(); 121 OS << "[TC],"; 122 OS << S.getName(); 123 OS << '\n'; 124 } 125 void emitMachine(StringRef CPU) override { 126 OS << "\t.machine " << CPU << '\n'; 127 } 128}; 129 130class PPCTargetELFStreamer : public PPCTargetStreamer { 131public: 132 PPCTargetELFStreamer(MCStreamer &S) : PPCTargetStreamer(S) {} 133 void emitTCEntry(const MCSymbol &S) override { 134 // Creates a R_PPC64_TOC relocation 135 Streamer.EmitSymbolValue(&S, 8); 136 } 137 void emitMachine(StringRef CPU) override { 138 // FIXME: Is there anything to do in here or does this directive only 139 // limit the parser? 140 } 141}; 142 143class PPCTargetMachOStreamer : public PPCTargetStreamer { 144public: 145 PPCTargetMachOStreamer(MCStreamer &S) : PPCTargetStreamer(S) {} 146 void emitTCEntry(const MCSymbol &S) override { 147 llvm_unreachable("Unknown pseudo-op: .tc"); 148 } 149 void emitMachine(StringRef CPU) override { 150 // FIXME: We should update the CPUType, CPUSubType in the Object file if 151 // the new values are different from the defaults. 152 } 153}; 154} 155 156// This is duplicated code. Refactor this. 157static MCStreamer *createMCStreamer(const Target &T, StringRef TT, 158 MCContext &Ctx, MCAsmBackend &MAB, 159 raw_ostream &OS, 160 MCCodeEmitter *Emitter, 161 const MCSubtargetInfo &STI, 162 bool RelaxAll, 163 bool NoExecStack) { 164 if (Triple(TT).isOSDarwin()) { 165 MCStreamer *S = createMachOStreamer(Ctx, MAB, OS, Emitter, RelaxAll); 166 new PPCTargetMachOStreamer(*S); 167 return S; 168 } 169 170 MCStreamer *S = 171 createELFStreamer(Ctx, MAB, OS, Emitter, RelaxAll, NoExecStack); 172 new PPCTargetELFStreamer(*S); 173 return S; 174} 175 176static MCStreamer * 177createMCAsmStreamer(MCContext &Ctx, formatted_raw_ostream &OS, 178 bool isVerboseAsm, bool useDwarfDirectory, 179 MCInstPrinter *InstPrint, MCCodeEmitter *CE, 180 MCAsmBackend *TAB, bool ShowInst) { 181 182 MCStreamer *S = llvm::createAsmStreamer( 183 Ctx, OS, isVerboseAsm, useDwarfDirectory, InstPrint, CE, TAB, ShowInst); 184 new PPCTargetAsmStreamer(*S, OS); 185 return S; 186} 187 188static MCInstPrinter *createPPCMCInstPrinter(const Target &T, 189 unsigned SyntaxVariant, 190 const MCAsmInfo &MAI, 191 const MCInstrInfo &MII, 192 const MCRegisterInfo &MRI, 193 const MCSubtargetInfo &STI) { 194 bool isDarwin = Triple(STI.getTargetTriple()).isOSDarwin(); 195 return new PPCInstPrinter(MAI, MII, MRI, isDarwin); 196} 197 198extern "C" void LLVMInitializePowerPCTargetMC() { 199 // Register the MC asm info. 200 RegisterMCAsmInfoFn C(ThePPC32Target, createPPCMCAsmInfo); 201 RegisterMCAsmInfoFn D(ThePPC64Target, createPPCMCAsmInfo); 202 RegisterMCAsmInfoFn E(ThePPC64LETarget, createPPCMCAsmInfo); 203 204 // Register the MC codegen info. 205 TargetRegistry::RegisterMCCodeGenInfo(ThePPC32Target, createPPCMCCodeGenInfo); 206 TargetRegistry::RegisterMCCodeGenInfo(ThePPC64Target, createPPCMCCodeGenInfo); 207 TargetRegistry::RegisterMCCodeGenInfo(ThePPC64LETarget, 208 createPPCMCCodeGenInfo); 209 210 // Register the MC instruction info. 211 TargetRegistry::RegisterMCInstrInfo(ThePPC32Target, createPPCMCInstrInfo); 212 TargetRegistry::RegisterMCInstrInfo(ThePPC64Target, createPPCMCInstrInfo); 213 TargetRegistry::RegisterMCInstrInfo(ThePPC64LETarget, 214 createPPCMCInstrInfo); 215 216 // Register the MC register info. 217 TargetRegistry::RegisterMCRegInfo(ThePPC32Target, createPPCMCRegisterInfo); 218 TargetRegistry::RegisterMCRegInfo(ThePPC64Target, createPPCMCRegisterInfo); 219 TargetRegistry::RegisterMCRegInfo(ThePPC64LETarget, createPPCMCRegisterInfo); 220 221 // Register the MC subtarget info. 222 TargetRegistry::RegisterMCSubtargetInfo(ThePPC32Target, 223 createPPCMCSubtargetInfo); 224 TargetRegistry::RegisterMCSubtargetInfo(ThePPC64Target, 225 createPPCMCSubtargetInfo); 226 TargetRegistry::RegisterMCSubtargetInfo(ThePPC64LETarget, 227 createPPCMCSubtargetInfo); 228 229 // Register the MC Code Emitter 230 TargetRegistry::RegisterMCCodeEmitter(ThePPC32Target, createPPCMCCodeEmitter); 231 TargetRegistry::RegisterMCCodeEmitter(ThePPC64Target, createPPCMCCodeEmitter); 232 TargetRegistry::RegisterMCCodeEmitter(ThePPC64LETarget, 233 createPPCMCCodeEmitter); 234 235 // Register the asm backend. 236 TargetRegistry::RegisterMCAsmBackend(ThePPC32Target, createPPCAsmBackend); 237 TargetRegistry::RegisterMCAsmBackend(ThePPC64Target, createPPCAsmBackend); 238 TargetRegistry::RegisterMCAsmBackend(ThePPC64LETarget, createPPCAsmBackend); 239 240 // Register the object streamer. 241 TargetRegistry::RegisterMCObjectStreamer(ThePPC32Target, createMCStreamer); 242 TargetRegistry::RegisterMCObjectStreamer(ThePPC64Target, createMCStreamer); 243 TargetRegistry::RegisterMCObjectStreamer(ThePPC64LETarget, createMCStreamer); 244 245 // Register the asm streamer. 246 TargetRegistry::RegisterAsmStreamer(ThePPC32Target, createMCAsmStreamer); 247 TargetRegistry::RegisterAsmStreamer(ThePPC64Target, createMCAsmStreamer); 248 TargetRegistry::RegisterAsmStreamer(ThePPC64LETarget, createMCAsmStreamer); 249 250 // Register the MCInstPrinter. 251 TargetRegistry::RegisterMCInstPrinter(ThePPC32Target, createPPCMCInstPrinter); 252 TargetRegistry::RegisterMCInstPrinter(ThePPC64Target, createPPCMCInstPrinter); 253 TargetRegistry::RegisterMCInstPrinter(ThePPC64LETarget, 254 createPPCMCInstPrinter); 255} 256