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