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