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