lib/Target/PowerPC/MCTargetDesc/PPCMCTargetDesc.cpp

   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);
  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 }