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