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      1 //=== MipsInstPrinter.h - Convert Mips MCInst to assembly syntax -*- 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 // This class prints a Mips MCInst to a .s file.
     10 //
     11 //===----------------------------------------------------------------------===//
     12 
     13 #ifndef LLVM_LIB_TARGET_MIPS_MCTARGETDESC_MIPSINSTPRINTER_H
     14 #define LLVM_LIB_TARGET_MIPS_MCTARGETDESC_MIPSINSTPRINTER_H
     15 #include "llvm/MC/MCInstPrinter.h"
     16 
     17 namespace llvm {
     18 // These enumeration declarations were originally in MipsInstrInfo.h but
     19 // had to be moved here to avoid circular dependencies between
     20 // LLVMMipsCodeGen and LLVMMipsAsmPrinter.
     21 namespace Mips {
     22 // Mips Branch Codes
     23 enum FPBranchCode {
     24   BRANCH_F,
     25   BRANCH_T,
     26   BRANCH_FL,
     27   BRANCH_TL,
     28   BRANCH_INVALID
     29 };
     30 
     31 // Mips Condition Codes
     32 enum CondCode {
     33   // To be used with float branch True
     34   FCOND_F,
     35   FCOND_UN,
     36   FCOND_OEQ,
     37   FCOND_UEQ,
     38   FCOND_OLT,
     39   FCOND_ULT,
     40   FCOND_OLE,
     41   FCOND_ULE,
     42   FCOND_SF,
     43   FCOND_NGLE,
     44   FCOND_SEQ,
     45   FCOND_NGL,
     46   FCOND_LT,
     47   FCOND_NGE,
     48   FCOND_LE,
     49   FCOND_NGT,
     50 
     51   // To be used with float branch False
     52   // This conditions have the same mnemonic as the
     53   // above ones, but are used with a branch False;
     54   FCOND_T,
     55   FCOND_OR,
     56   FCOND_UNE,
     57   FCOND_ONE,
     58   FCOND_UGE,
     59   FCOND_OGE,
     60   FCOND_UGT,
     61   FCOND_OGT,
     62   FCOND_ST,
     63   FCOND_GLE,
     64   FCOND_SNE,
     65   FCOND_GL,
     66   FCOND_NLT,
     67   FCOND_GE,
     68   FCOND_NLE,
     69   FCOND_GT
     70 };
     71 
     72 const char *MipsFCCToString(Mips::CondCode CC);
     73 } // end namespace Mips
     74 
     75 class MipsInstPrinter : public MCInstPrinter {
     76 public:
     77   MipsInstPrinter(const MCAsmInfo &MAI, const MCInstrInfo &MII,
     78                   const MCRegisterInfo &MRI)
     79     : MCInstPrinter(MAI, MII, MRI) {}
     80 
     81   // Autogenerated by tblgen.
     82   std::pair<const char *, uint64_t> getMnemonic(const MCInst *MI) override;
     83   void printInstruction(const MCInst *MI, uint64_t Address, raw_ostream &O);
     84   static const char *getRegisterName(unsigned RegNo);
     85 
     86   void printRegName(raw_ostream &OS, unsigned RegNo) const override;
     87   void printInst(const MCInst *MI, uint64_t Address, StringRef Annot,
     88                  const MCSubtargetInfo &STI, raw_ostream &O) override;
     89 
     90   bool printAliasInstr(const MCInst *MI, uint64_t Address, raw_ostream &OS);
     91   void printCustomAliasOperand(const MCInst *MI, uint64_t Address,
     92                                unsigned OpIdx, unsigned PrintMethodIdx,
     93                                raw_ostream &O);
     94 
     95 private:
     96   void printOperand(const MCInst *MI, unsigned OpNo, raw_ostream &O);
     97   void printOperand(const MCInst *MI, uint64_t /*Address*/, unsigned OpNum,
     98                     raw_ostream &O) {
     99     printOperand(MI, OpNum, O);
    100   }
    101   template <unsigned Bits, unsigned Offset = 0>
    102   void printUImm(const MCInst *MI, int opNum, raw_ostream &O);
    103   void printMemOperand(const MCInst *MI, int opNum, raw_ostream &O);
    104   void printMemOperandEA(const MCInst *MI, int opNum, raw_ostream &O);
    105   void printFCCOperand(const MCInst *MI, int opNum, raw_ostream &O);
    106   void printSHFMask(const MCInst *MI, int opNum, raw_ostream &O);
    107 
    108   bool printAlias(const char *Str, const MCInst &MI, unsigned OpNo,
    109                   raw_ostream &OS);
    110   bool printAlias(const char *Str, const MCInst &MI, unsigned OpNo0,
    111                   unsigned OpNo1, raw_ostream &OS);
    112   bool printAlias(const MCInst &MI, raw_ostream &OS);
    113   void printSaveRestore(const MCInst *MI, raw_ostream &O);
    114   void printRegisterList(const MCInst *MI, int opNum, raw_ostream &O);
    115 };
    116 } // end namespace llvm
    117 
    118 #endif
    119