lib/Target/Mips/MCTargetDesc/MipsMCTargetDesc.cpp

   1 //===-- MipsMCTargetDesc.cpp - Mips 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 Mips specific target descriptions.
  11 //
  12 //===----------------------------------------------------------------------===//
  13
  14 #include "MipsMCTargetDesc.h"
  15 #include "InstPrinter/MipsInstPrinter.h"
  16 #include "MipsMCAsmInfo.h"
  17 #include "MipsTargetStreamer.h"
  18 #include "llvm/MC/MCCodeGenInfo.h"
  19 #include "llvm/MC/MCELFStreamer.h"
  20 #include "llvm/MC/MCInstrInfo.h"
  21 #include "llvm/MC/MCRegisterInfo.h"
  22 #include "llvm/MC/MCSubtargetInfo.h"
  23 #include "llvm/MC/MCSymbol.h"
  24 #include "llvm/MC/MachineLocation.h"
  25 #include "llvm/Support/CommandLine.h"
  26 #include "llvm/Support/ErrorHandling.h"
  27 #include "llvm/Support/FormattedStream.h"
  28 #include "llvm/Support/TargetRegistry.h"
  29
  30 #define GET_INSTRINFO_MC_DESC
  31 #include "MipsGenInstrInfo.inc"
  32
  33 #define GET_SUBTARGETINFO_MC_DESC
  34 #include "MipsGenSubtargetInfo.inc"
  35
  36 #define GET_REGINFO_MC_DESC
  37 #include "MipsGenRegisterInfo.inc"
  38
  39 using namespace llvm;
  40
  41 static std::string ParseMipsTriple(StringRef TT, StringRef CPU) {
  42   std::string MipsArchFeature;
  43   size_t DashPosition = 0;
  44   StringRef TheTriple;
  45
  46   // Let's see if there is a dash, like mips-unknown-linux.
  47   DashPosition = TT.find('-');
  48
  49   if (DashPosition == StringRef::npos) {
  50     // No dash, we check the string size.
  51     TheTriple = TT.substr(0);
  52   } else {
  53     // We are only interested in substring before dash.
  54     TheTriple = TT.substr(0,DashPosition);
  55   }
  56
  57   if (TheTriple == "mips" || TheTriple == "mipsel") {
  58     if (CPU.empty() || CPU == "mips32") {
  59       MipsArchFeature = "+mips32";
  60     } else if (CPU == "mips32r2") {
  61       MipsArchFeature = "+mips32r2";
  62     }
  63   } else {
  64       if (CPU.empty() || CPU == "mips64") {
  65         MipsArchFeature = "+mips64";
  66       } else if (CPU == "mips64r2") {
  67         MipsArchFeature = "+mips64r2";
  68       }
  69   }
  70   return MipsArchFeature;
  71 }
  72
  73 static MCInstrInfo *createMipsMCInstrInfo() {
  74   MCInstrInfo *X = new MCInstrInfo();
  75   InitMipsMCInstrInfo(X);
  76   return X;
  77 }
  78
  79 static MCRegisterInfo *createMipsMCRegisterInfo(StringRef TT) {
  80   MCRegisterInfo *X = new MCRegisterInfo();
  81   InitMipsMCRegisterInfo(X, Mips::RA);
  82   return X;
  83 }
  84
  85 static MCSubtargetInfo *createMipsMCSubtargetInfo(StringRef TT, StringRef CPU,
  86                                                   StringRef FS) {
  87   std::string ArchFS = ParseMipsTriple(TT,CPU);
  88   if (!FS.empty()) {
  89     if (!ArchFS.empty())
  90       ArchFS = ArchFS + "," + FS.str();
  91     else
  92       ArchFS = FS;
  93   }
  94   MCSubtargetInfo *X = new MCSubtargetInfo();
  95   InitMipsMCSubtargetInfo(X, TT, CPU, ArchFS);
  96   return X;
  97 }
  98
  99 static MCAsmInfo *createMipsMCAsmInfo(const MCRegisterInfo &MRI, StringRef TT) {
 100   MCAsmInfo *MAI = new MipsMCAsmInfo(TT);
 101
 102   unsigned SP = MRI.getDwarfRegNum(Mips::SP, true);
 103   MCCFIInstruction Inst = MCCFIInstruction::createDefCfa(0, SP, 0);
 104   MAI->addInitialFrameState(Inst);
 105
 106   return MAI;
 107 }
 108
 109 static MCCodeGenInfo *createMipsMCCodeGenInfo(StringRef TT, Reloc::Model RM,
 110                                               CodeModel::Model CM,
 111                                               CodeGenOpt::Level OL) {
 112   MCCodeGenInfo *X = new MCCodeGenInfo();
 113   if (CM == CodeModel::JITDefault)
 114     RM = Reloc::Static;
 115   else if (RM == Reloc::Default)
 116     RM = Reloc::PIC_;
 117   X->InitMCCodeGenInfo(RM, CM, OL);
 118   return X;
 119 }
 120
 121 static MCInstPrinter *createMipsMCInstPrinter(const Target &T,
 122                                               unsigned SyntaxVariant,
 123                                               const MCAsmInfo &MAI,
 124                                               const MCInstrInfo &MII,
 125                                               const MCRegisterInfo &MRI,
 126                                               const MCSubtargetInfo &STI) {
 127   return new MipsInstPrinter(MAI, MII, MRI);
 128 }
 129
 130 static MCStreamer *createMCStreamer(const Target &T, StringRef TT,
 131                                     MCContext &Context, MCAsmBackend &MAB,
 132                                     raw_ostream &OS, MCCodeEmitter *Emitter,
 133                                     const MCSubtargetInfo &STI,
 134                                     bool RelaxAll, bool NoExecStack) {
 135   MCStreamer *S =
 136       createELFStreamer(Context, MAB, OS, Emitter, RelaxAll, NoExecStack);
 137   new MipsTargetELFStreamer(*S, STI);
 138   return S;
 139 }
 140
 141 static MCStreamer *
 142 createMCAsmStreamer(MCContext &Ctx, formatted_raw_ostream &OS,
 143                     bool isVerboseAsm, bool useLoc, bool useCFI,
 144                     bool useDwarfDirectory, MCInstPrinter *InstPrint,
 145                     MCCodeEmitter *CE, MCAsmBackend *TAB, bool ShowInst) {
 146   MCStreamer *S =
 147       llvm::createAsmStreamer(Ctx, OS, isVerboseAsm, useLoc, useCFI,
 148                               useDwarfDirectory, InstPrint, CE, TAB, ShowInst);
 149   new MipsTargetAsmStreamer(*S, OS);
 150   return S;
 151 }
 152
 153 extern "C" void LLVMInitializeMipsTargetMC() {
 154   // Register the MC asm info.
 155   RegisterMCAsmInfoFn X(TheMipsTarget, createMipsMCAsmInfo);
 156   RegisterMCAsmInfoFn Y(TheMipselTarget, createMipsMCAsmInfo);
 157   RegisterMCAsmInfoFn A(TheMips64Target, createMipsMCAsmInfo);
 158   RegisterMCAsmInfoFn B(TheMips64elTarget, createMipsMCAsmInfo);
 159
 160   // Register the MC codegen info.
 161   TargetRegistry::RegisterMCCodeGenInfo(TheMipsTarget,
 162                                         createMipsMCCodeGenInfo);
 163   TargetRegistry::RegisterMCCodeGenInfo(TheMipselTarget,
 164                                         createMipsMCCodeGenInfo);
 165   TargetRegistry::RegisterMCCodeGenInfo(TheMips64Target,
 166                                         createMipsMCCodeGenInfo);
 167   TargetRegistry::RegisterMCCodeGenInfo(TheMips64elTarget,
 168                                         createMipsMCCodeGenInfo);
 169
 170   // Register the MC instruction info.
 171   TargetRegistry::RegisterMCInstrInfo(TheMipsTarget, createMipsMCInstrInfo);
 172   TargetRegistry::RegisterMCInstrInfo(TheMipselTarget, createMipsMCInstrInfo);
 173   TargetRegistry::RegisterMCInstrInfo(TheMips64Target, createMipsMCInstrInfo);
 174   TargetRegistry::RegisterMCInstrInfo(TheMips64elTarget,
 175                                       createMipsMCInstrInfo);
 176
 177   // Register the MC register info.
 178   TargetRegistry::RegisterMCRegInfo(TheMipsTarget, createMipsMCRegisterInfo);
 179   TargetRegistry::RegisterMCRegInfo(TheMipselTarget, createMipsMCRegisterInfo);
 180   TargetRegistry::RegisterMCRegInfo(TheMips64Target, createMipsMCRegisterInfo);
 181   TargetRegistry::RegisterMCRegInfo(TheMips64elTarget,
 182                                     createMipsMCRegisterInfo);
 183
 184   // Register the MC Code Emitter
 185   TargetRegistry::RegisterMCCodeEmitter(TheMipsTarget,
 186                                         createMipsMCCodeEmitterEB);
 187   TargetRegistry::RegisterMCCodeEmitter(TheMipselTarget,
 188                                         createMipsMCCodeEmitterEL);
 189   TargetRegistry::RegisterMCCodeEmitter(TheMips64Target,
 190                                         createMipsMCCodeEmitterEB);
 191   TargetRegistry::RegisterMCCodeEmitter(TheMips64elTarget,
 192                                         createMipsMCCodeEmitterEL);
 193
 194   // Register the object streamer.
 195   TargetRegistry::RegisterMCObjectStreamer(TheMipsTarget, createMCStreamer);
 196   TargetRegistry::RegisterMCObjectStreamer(TheMipselTarget, createMCStreamer);
 197   TargetRegistry::RegisterMCObjectStreamer(TheMips64Target, createMCStreamer);
 198   TargetRegistry::RegisterMCObjectStreamer(TheMips64elTarget,
 199                                            createMCStreamer);
 200
 201   // Register the asm streamer.
 202   TargetRegistry::RegisterAsmStreamer(TheMipsTarget, createMCAsmStreamer);
 203   TargetRegistry::RegisterAsmStreamer(TheMipselTarget, createMCAsmStreamer);
 204   TargetRegistry::RegisterAsmStreamer(TheMips64Target, createMCAsmStreamer);
 205   TargetRegistry::RegisterAsmStreamer(TheMips64elTarget, createMCAsmStreamer);
 206
 207   // Register the asm backend.
 208   TargetRegistry::RegisterMCAsmBackend(TheMipsTarget,
 209                                        createMipsAsmBackendEB32);
 210   TargetRegistry::RegisterMCAsmBackend(TheMipselTarget,
 211                                        createMipsAsmBackendEL32);
 212   TargetRegistry::RegisterMCAsmBackend(TheMips64Target,
 213                                        createMipsAsmBackendEB64);
 214   TargetRegistry::RegisterMCAsmBackend(TheMips64elTarget,
 215                                        createMipsAsmBackendEL64);
 216
 217   // Register the MC subtarget info.
 218   TargetRegistry::RegisterMCSubtargetInfo(TheMipsTarget,
 219                                           createMipsMCSubtargetInfo);
 220   TargetRegistry::RegisterMCSubtargetInfo(TheMipselTarget,
 221                                           createMipsMCSubtargetInfo);
 222   TargetRegistry::RegisterMCSubtargetInfo(TheMips64Target,
 223                                           createMipsMCSubtargetInfo);
 224   TargetRegistry::RegisterMCSubtargetInfo(TheMips64elTarget,
 225                                           createMipsMCSubtargetInfo);
 226
 227   // Register the MCInstPrinter.
 228   TargetRegistry::RegisterMCInstPrinter(TheMipsTarget,
 229                                         createMipsMCInstPrinter);
 230   TargetRegistry::RegisterMCInstPrinter(TheMipselTarget,
 231                                         createMipsMCInstPrinter);
 232   TargetRegistry::RegisterMCInstPrinter(TheMips64Target,
 233                                         createMipsMCInstPrinter);
 234   TargetRegistry::RegisterMCInstPrinter(TheMips64elTarget,
 235                                         createMipsMCInstPrinter);
 236 }