lib/Target/Mips/MipsTargetStreamer.h

   1 //===-- MipsTargetStreamer.h - Mips Target Streamer ------------*- C++ -*--===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8
   9 #ifndef LLVM_LIB_TARGET_MIPS_MIPSTARGETSTREAMER_H
  10 #define LLVM_LIB_TARGET_MIPS_MIPSTARGETSTREAMER_H
  11
  12 #include "MCTargetDesc/MipsABIFlagsSection.h"
  13 #include "MCTargetDesc/MipsABIInfo.h"
  14 #include "llvm/ADT/Optional.h"
  15 #include "llvm/ADT/STLExtras.h"
  16 #include "llvm/MC/MCELFStreamer.h"
  17 #include "llvm/MC/MCRegisterInfo.h"
  18 #include "llvm/MC/MCStreamer.h"
  19
  20 namespace llvm {
  21
  22 struct MipsABIFlagsSection;
  23
  24 class MipsTargetStreamer : public MCTargetStreamer {
  25 public:
  26   MipsTargetStreamer(MCStreamer &S);
  27
  28   virtual void setPic(bool Value) {}
  29
  30   virtual void emitDirectiveSetMicroMips();
  31   virtual void emitDirectiveSetNoMicroMips();
  32   virtual void setUsesMicroMips();
  33   virtual void emitDirectiveSetMips16();
  34   virtual void emitDirectiveSetNoMips16();
  35
  36   virtual void emitDirectiveSetReorder();
  37   virtual void emitDirectiveSetNoReorder();
  38   virtual void emitDirectiveSetMacro();
  39   virtual void emitDirectiveSetNoMacro();
  40   virtual void emitDirectiveSetMsa();
  41   virtual void emitDirectiveSetNoMsa();
  42   virtual void emitDirectiveSetMt();
  43   virtual void emitDirectiveSetNoMt();
  44   virtual void emitDirectiveSetCRC();
  45   virtual void emitDirectiveSetNoCRC();
  46   virtual void emitDirectiveSetVirt();
  47   virtual void emitDirectiveSetNoVirt();
  48   virtual void emitDirectiveSetGINV();
  49   virtual void emitDirectiveSetNoGINV();
  50   virtual void emitDirectiveSetAt();
  51   virtual void emitDirectiveSetAtWithArg(unsigned RegNo);
  52   virtual void emitDirectiveSetNoAt();
  53   virtual void emitDirectiveEnd(StringRef Name);
  54
  55   virtual void emitDirectiveEnt(const MCSymbol &Symbol);
  56   virtual void emitDirectiveAbiCalls();
  57   virtual void emitDirectiveNaN2008();
  58   virtual void emitDirectiveNaNLegacy();
  59   virtual void emitDirectiveOptionPic0();
  60   virtual void emitDirectiveOptionPic2();
  61   virtual void emitDirectiveInsn();
  62   virtual void emitFrame(unsigned StackReg, unsigned StackSize,
  63                          unsigned ReturnReg);
  64   virtual void emitMask(unsigned CPUBitmask, int CPUTopSavedRegOff);
  65   virtual void emitFMask(unsigned FPUBitmask, int FPUTopSavedRegOff);
  66
  67   virtual void emitDirectiveSetArch(StringRef Arch);
  68   virtual void emitDirectiveSetMips0();
  69   virtual void emitDirectiveSetMips1();
  70   virtual void emitDirectiveSetMips2();
  71   virtual void emitDirectiveSetMips3();
  72   virtual void emitDirectiveSetMips4();
  73   virtual void emitDirectiveSetMips5();
  74   virtual void emitDirectiveSetMips32();
  75   virtual void emitDirectiveSetMips32R2();
  76   virtual void emitDirectiveSetMips32R3();
  77   virtual void emitDirectiveSetMips32R5();
  78   virtual void emitDirectiveSetMips32R6();
  79   virtual void emitDirectiveSetMips64();
  80   virtual void emitDirectiveSetMips64R2();
  81   virtual void emitDirectiveSetMips64R3();
  82   virtual void emitDirectiveSetMips64R5();
  83   virtual void emitDirectiveSetMips64R6();
  84   virtual void emitDirectiveSetDsp();
  85   virtual void emitDirectiveSetDspr2();
  86   virtual void emitDirectiveSetNoDsp();
  87   virtual void emitDirectiveSetPop();
  88   virtual void emitDirectiveSetPush();
  89   virtual void emitDirectiveSetSoftFloat();
  90   virtual void emitDirectiveSetHardFloat();
  91
  92   // PIC support
  93   virtual void emitDirectiveCpLoad(unsigned RegNo);
  94   virtual bool emitDirectiveCpRestore(int Offset,
  95                                       function_ref<unsigned()> GetATReg,
  96                                       SMLoc IDLoc, const MCSubtargetInfo *STI);
  97   virtual void emitDirectiveCpsetup(unsigned RegNo, int RegOrOffset,
  98                                     const MCSymbol &Sym, bool IsReg);
  99   virtual void emitDirectiveCpreturn(unsigned SaveLocation,
 100                                      bool SaveLocationIsRegister);
 101
 102   // FP abiflags directives
 103   virtual void emitDirectiveModuleFP();
 104   virtual void emitDirectiveModuleOddSPReg();
 105   virtual void emitDirectiveModuleSoftFloat();
 106   virtual void emitDirectiveModuleHardFloat();
 107   virtual void emitDirectiveModuleMT();
 108   virtual void emitDirectiveSetFp(MipsABIFlagsSection::FpABIKind Value);
 109   virtual void emitDirectiveSetOddSPReg();
 110   virtual void emitDirectiveSetNoOddSPReg();
 111   virtual void emitDirectiveModuleCRC();
 112   virtual void emitDirectiveModuleNoCRC();
 113   virtual void emitDirectiveModuleVirt();
 114   virtual void emitDirectiveModuleNoVirt();
 115   virtual void emitDirectiveModuleGINV();
 116   virtual void emitDirectiveModuleNoGINV();
 117
 118   void emitR(unsigned Opcode, unsigned Reg0, SMLoc IDLoc,
 119              const MCSubtargetInfo *STI);
 120   void emitII(unsigned Opcode, int16_t Imm1, int16_t Imm2, SMLoc IDLoc,
 121               const MCSubtargetInfo *STI);
 122   void emitRX(unsigned Opcode, unsigned Reg0, MCOperand Op1, SMLoc IDLoc,
 123               const MCSubtargetInfo *STI);
 124   void emitRI(unsigned Opcode, unsigned Reg0, int32_t Imm, SMLoc IDLoc,
 125               const MCSubtargetInfo *STI);
 126   void emitRR(unsigned Opcode, unsigned Reg0, unsigned Reg1, SMLoc IDLoc,
 127               const MCSubtargetInfo *STI);
 128   void emitRRX(unsigned Opcode, unsigned Reg0, unsigned Reg1, MCOperand Op2,
 129                SMLoc IDLoc, const MCSubtargetInfo *STI);
 130   void emitRRR(unsigned Opcode, unsigned Reg0, unsigned Reg1, unsigned Reg2,
 131                SMLoc IDLoc, const MCSubtargetInfo *STI);
 132   void emitRRI(unsigned Opcode, unsigned Reg0, unsigned Reg1, int16_t Imm,
 133                SMLoc IDLoc, const MCSubtargetInfo *STI);
 134   void emitRRIII(unsigned Opcode, unsigned Reg0, unsigned Reg1, int16_t Imm0,
 135                  int16_t Imm1, int16_t Imm2, SMLoc IDLoc,
 136                  const MCSubtargetInfo *STI);
 137   void emitAddu(unsigned DstReg, unsigned SrcReg, unsigned TrgReg, bool Is64Bit,
 138                 const MCSubtargetInfo *STI);
 139   void emitDSLL(unsigned DstReg, unsigned SrcReg, int16_t ShiftAmount,
 140                 SMLoc IDLoc, const MCSubtargetInfo *STI);
 141   void emitEmptyDelaySlot(bool hasShortDelaySlot, SMLoc IDLoc,
 142                           const MCSubtargetInfo *STI);
 143   void emitNop(SMLoc IDLoc, const MCSubtargetInfo *STI);
 144
 145   /// Emit a store instruction with an offset. If the offset is out of range
 146   /// then it will be synthesized using the assembler temporary.
 147   ///
 148   /// GetATReg() is a callback that can be used to obtain the current assembler
 149   /// temporary and is only called when the assembler temporary is required. It
 150   /// must handle the case where no assembler temporary is available (typically
 151   /// by reporting an error).
 152   void emitStoreWithImmOffset(unsigned Opcode, unsigned SrcReg,
 153                               unsigned BaseReg, int64_t Offset,
 154                               function_ref<unsigned()> GetATReg, SMLoc IDLoc,
 155                               const MCSubtargetInfo *STI);
 156   void emitStoreWithSymOffset(unsigned Opcode, unsigned SrcReg,
 157                               unsigned BaseReg, MCOperand &HiOperand,
 158                               MCOperand &LoOperand, unsigned ATReg, SMLoc IDLoc,
 159                               const MCSubtargetInfo *STI);
 160   void emitLoadWithImmOffset(unsigned Opcode, unsigned DstReg, unsigned BaseReg,
 161                              int64_t Offset, unsigned TmpReg, SMLoc IDLoc,
 162                              const MCSubtargetInfo *STI);
 163   void emitLoadWithSymOffset(unsigned Opcode, unsigned DstReg, unsigned BaseReg,
 164                              MCOperand &HiOperand, MCOperand &LoOperand,
 165                              unsigned ATReg, SMLoc IDLoc,
 166                              const MCSubtargetInfo *STI);
 167   void emitGPRestore(int Offset, SMLoc IDLoc, const MCSubtargetInfo *STI);
 168
 169   void forbidModuleDirective() { ModuleDirectiveAllowed = false; }
 170   void reallowModuleDirective() { ModuleDirectiveAllowed = true; }
 171   bool isModuleDirectiveAllowed() { return ModuleDirectiveAllowed; }
 172
 173   // This method enables template classes to set internal abi flags
 174   // structure values.
 175   template <class PredicateLibrary>
 176   void updateABIInfo(const PredicateLibrary &P) {
 177     ABI = P.getABI();
 178     ABIFlagsSection.setAllFromPredicates(P);
 179   }
 180
 181   MipsABIFlagsSection &getABIFlagsSection() { return ABIFlagsSection; }
 182   const MipsABIInfo &getABI() const {
 183     assert(ABI.hasValue() && "ABI hasn't been set!");
 184     return *ABI;
 185   }
 186
 187 protected:
 188   llvm::Optional<MipsABIInfo> ABI;
 189   MipsABIFlagsSection ABIFlagsSection;
 190
 191   bool GPRInfoSet;
 192   unsigned GPRBitMask;
 193   int GPROffset;
 194
 195   bool FPRInfoSet;
 196   unsigned FPRBitMask;
 197   int FPROffset;
 198
 199   bool FrameInfoSet;
 200   int FrameOffset;
 201   unsigned FrameReg;
 202   unsigned ReturnReg;
 203
 204 private:
 205   bool ModuleDirectiveAllowed;
 206 };
 207
 208 // This part is for ascii assembly output
 209 class MipsTargetAsmStreamer : public MipsTargetStreamer {
 210   formatted_raw_ostream &OS;
 211
 212 public:
 213   MipsTargetAsmStreamer(MCStreamer &S, formatted_raw_ostream &OS);
 214   void emitDirectiveSetMicroMips() override;
 215   void emitDirectiveSetNoMicroMips() override;
 216   void emitDirectiveSetMips16() override;
 217   void emitDirectiveSetNoMips16() override;
 218
 219   void emitDirectiveSetReorder() override;
 220   void emitDirectiveSetNoReorder() override;
 221   void emitDirectiveSetMacro() override;
 222   void emitDirectiveSetNoMacro() override;
 223   void emitDirectiveSetMsa() override;
 224   void emitDirectiveSetNoMsa() override;
 225   void emitDirectiveSetMt() override;
 226   void emitDirectiveSetNoMt() override;
 227   void emitDirectiveSetCRC() override;
 228   void emitDirectiveSetNoCRC() override;
 229   void emitDirectiveSetVirt() override;
 230   void emitDirectiveSetNoVirt() override;
 231   void emitDirectiveSetGINV() override;
 232   void emitDirectiveSetNoGINV() override;
 233   void emitDirectiveSetAt() override;
 234   void emitDirectiveSetAtWithArg(unsigned RegNo) override;
 235   void emitDirectiveSetNoAt() override;
 236   void emitDirectiveEnd(StringRef Name) override;
 237
 238   void emitDirectiveEnt(const MCSymbol &Symbol) override;
 239   void emitDirectiveAbiCalls() override;
 240   void emitDirectiveNaN2008() override;
 241   void emitDirectiveNaNLegacy() override;
 242   void emitDirectiveOptionPic0() override;
 243   void emitDirectiveOptionPic2() override;
 244   void emitDirectiveInsn() override;
 245   void emitFrame(unsigned StackReg, unsigned StackSize,
 246                  unsigned ReturnReg) override;
 247   void emitMask(unsigned CPUBitmask, int CPUTopSavedRegOff) override;
 248   void emitFMask(unsigned FPUBitmask, int FPUTopSavedRegOff) override;
 249
 250   void emitDirectiveSetArch(StringRef Arch) override;
 251   void emitDirectiveSetMips0() override;
 252   void emitDirectiveSetMips1() override;
 253   void emitDirectiveSetMips2() override;
 254   void emitDirectiveSetMips3() override;
 255   void emitDirectiveSetMips4() override;
 256   void emitDirectiveSetMips5() override;
 257   void emitDirectiveSetMips32() override;
 258   void emitDirectiveSetMips32R2() override;
 259   void emitDirectiveSetMips32R3() override;
 260   void emitDirectiveSetMips32R5() override;
 261   void emitDirectiveSetMips32R6() override;
 262   void emitDirectiveSetMips64() override;
 263   void emitDirectiveSetMips64R2() override;
 264   void emitDirectiveSetMips64R3() override;
 265   void emitDirectiveSetMips64R5() override;
 266   void emitDirectiveSetMips64R6() override;
 267   void emitDirectiveSetDsp() override;
 268   void emitDirectiveSetDspr2() override;
 269   void emitDirectiveSetNoDsp() override;
 270   void emitDirectiveSetPop() override;
 271   void emitDirectiveSetPush() override;
 272   void emitDirectiveSetSoftFloat() override;
 273   void emitDirectiveSetHardFloat() override;
 274
 275   // PIC support
 276   void emitDirectiveCpLoad(unsigned RegNo) override;
 277
 278   /// Emit a .cprestore directive.  If the offset is out of range then it will
 279   /// be synthesized using the assembler temporary.
 280   ///
 281   /// GetATReg() is a callback that can be used to obtain the current assembler
 282   /// temporary and is only called when the assembler temporary is required. It
 283   /// must handle the case where no assembler temporary is available (typically
 284   /// by reporting an error).
 285   bool emitDirectiveCpRestore(int Offset, function_ref<unsigned()> GetATReg,
 286                               SMLoc IDLoc, const MCSubtargetInfo *STI) override;
 287   void emitDirectiveCpsetup(unsigned RegNo, int RegOrOffset,
 288                             const MCSymbol &Sym, bool IsReg) override;
 289   void emitDirectiveCpreturn(unsigned SaveLocation,
 290                              bool SaveLocationIsRegister) override;
 291
 292   // FP abiflags directives
 293   void emitDirectiveModuleFP() override;
 294   void emitDirectiveModuleOddSPReg() override;
 295   void emitDirectiveModuleSoftFloat() override;
 296   void emitDirectiveModuleHardFloat() override;
 297   void emitDirectiveModuleMT() override;
 298   void emitDirectiveModuleCRC() override;
 299   void emitDirectiveModuleNoCRC() override;
 300   void emitDirectiveModuleVirt() override;
 301   void emitDirectiveModuleNoVirt() override;
 302   void emitDirectiveModuleGINV() override;
 303   void emitDirectiveModuleNoGINV() override;
 304   void emitDirectiveSetFp(MipsABIFlagsSection::FpABIKind Value) override;
 305   void emitDirectiveSetOddSPReg() override;
 306   void emitDirectiveSetNoOddSPReg() override;
 307 };
 308
 309 // This part is for ELF object output
 310 class MipsTargetELFStreamer : public MipsTargetStreamer {
 311   bool MicroMipsEnabled;
 312   const MCSubtargetInfo &STI;
 313   bool Pic;
 314
 315 public:
 316   bool isMicroMipsEnabled() const { return MicroMipsEnabled; }
 317   MCELFStreamer &getStreamer();
 318   MipsTargetELFStreamer(MCStreamer &S, const MCSubtargetInfo &STI);
 319
 320   void setPic(bool Value) override { Pic = Value; }
 321
 322   void emitLabel(MCSymbol *Symbol) override;
 323   void emitAssignment(MCSymbol *Symbol, const MCExpr *Value) override;
 324   void finish() override;
 325
 326   void emitDirectiveSetMicroMips() override;
 327   void emitDirectiveSetNoMicroMips() override;
 328   void setUsesMicroMips() override;
 329   void emitDirectiveSetMips16() override;
 330
 331   void emitDirectiveSetNoReorder() override;
 332   void emitDirectiveEnd(StringRef Name) override;
 333
 334   void emitDirectiveEnt(const MCSymbol &Symbol) override;
 335   void emitDirectiveAbiCalls() override;
 336   void emitDirectiveNaN2008() override;
 337   void emitDirectiveNaNLegacy() override;
 338   void emitDirectiveOptionPic0() override;
 339   void emitDirectiveOptionPic2() override;
 340   void emitDirectiveInsn() override;
 341   void emitFrame(unsigned StackReg, unsigned StackSize,
 342                  unsigned ReturnReg) override;
 343   void emitMask(unsigned CPUBitmask, int CPUTopSavedRegOff) override;
 344   void emitFMask(unsigned FPUBitmask, int FPUTopSavedRegOff) override;
 345
 346   // PIC support
 347   void emitDirectiveCpLoad(unsigned RegNo) override;
 348   bool emitDirectiveCpRestore(int Offset, function_ref<unsigned()> GetATReg,
 349                               SMLoc IDLoc, const MCSubtargetInfo *STI) override;
 350   void emitDirectiveCpsetup(unsigned RegNo, int RegOrOffset,
 351                             const MCSymbol &Sym, bool IsReg) override;
 352   void emitDirectiveCpreturn(unsigned SaveLocation,
 353                              bool SaveLocationIsRegister) override;
 354
 355   void emitMipsAbiFlags();
 356 };
 357 }
 358 #endif