MipsMCCodeEmitter.h revision 36b56886974eae4f9c5ebc96befd3e7bfe5de338
1//===-- MipsMCCodeEmitter.h - Convert Mips Code to Machine Code -----------===// 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 defines the MipsMCCodeEmitter class. 11// 12//===----------------------------------------------------------------------===// 13// 14 15#ifndef MIPS_MC_CODE_EMITTER_H 16#define MIPS_MC_CODE_EMITTER_H 17 18#include "llvm/MC/MCCodeEmitter.h" 19#include "llvm/Support/DataTypes.h" 20 21using namespace llvm; 22 23namespace llvm { 24class MCContext; 25class MCExpr; 26class MCInst; 27class MCInstrInfo; 28class MCFixup; 29class MCOperand; 30class MCSubtargetInfo; 31class raw_ostream; 32 33class MipsMCCodeEmitter : public MCCodeEmitter { 34 MipsMCCodeEmitter(const MipsMCCodeEmitter &) LLVM_DELETED_FUNCTION; 35 void operator=(const MipsMCCodeEmitter &) LLVM_DELETED_FUNCTION; 36 const MCInstrInfo &MCII; 37 MCContext &Ctx; 38 bool IsLittleEndian; 39 40 bool isMicroMips(const MCSubtargetInfo &STI) const; 41 42public: 43 MipsMCCodeEmitter(const MCInstrInfo &mcii, MCContext &Ctx_, bool IsLittle) 44 : MCII(mcii), Ctx(Ctx_), IsLittleEndian(IsLittle) {} 45 46 ~MipsMCCodeEmitter() {} 47 48 void EmitByte(unsigned char C, raw_ostream &OS) const; 49 50 void EmitInstruction(uint64_t Val, unsigned Size, const MCSubtargetInfo &STI, 51 raw_ostream &OS) const; 52 53 void EncodeInstruction(const MCInst &MI, raw_ostream &OS, 54 SmallVectorImpl<MCFixup> &Fixups, 55 const MCSubtargetInfo &STI) const; 56 57 // getBinaryCodeForInstr - TableGen'erated function for getting the 58 // binary encoding for an instruction. 59 uint64_t getBinaryCodeForInstr(const MCInst &MI, 60 SmallVectorImpl<MCFixup> &Fixups, 61 const MCSubtargetInfo &STI) const; 62 63 // getBranchJumpOpValue - Return binary encoding of the jump 64 // target operand. If the machine operand requires relocation, 65 // record the relocation and return zero. 66 unsigned getJumpTargetOpValue(const MCInst &MI, unsigned OpNo, 67 SmallVectorImpl<MCFixup> &Fixups, 68 const MCSubtargetInfo &STI) const; 69 70 // getBranchJumpOpValueMM - Return binary encoding of the microMIPS jump 71 // target operand. If the machine operand requires relocation, 72 // record the relocation and return zero. 73 unsigned getJumpTargetOpValueMM(const MCInst &MI, unsigned OpNo, 74 SmallVectorImpl<MCFixup> &Fixups, 75 const MCSubtargetInfo &STI) const; 76 77 // getBranchTargetOpValue - Return binary encoding of the branch 78 // target operand. If the machine operand requires relocation, 79 // record the relocation and return zero. 80 unsigned getBranchTargetOpValue(const MCInst &MI, unsigned OpNo, 81 SmallVectorImpl<MCFixup> &Fixups, 82 const MCSubtargetInfo &STI) const; 83 84 // getBranchTargetOpValue - Return binary encoding of the microMIPS branch 85 // target operand. If the machine operand requires relocation, 86 // record the relocation and return zero. 87 unsigned getBranchTargetOpValueMM(const MCInst &MI, unsigned OpNo, 88 SmallVectorImpl<MCFixup> &Fixups, 89 const MCSubtargetInfo &STI) const; 90 91 // getMachineOpValue - Return binary encoding of operand. If the machin 92 // operand requires relocation, record the relocation and return zero. 93 unsigned getMachineOpValue(const MCInst &MI, const MCOperand &MO, 94 SmallVectorImpl<MCFixup> &Fixups, 95 const MCSubtargetInfo &STI) const; 96 97 unsigned getMSAMemEncoding(const MCInst &MI, unsigned OpNo, 98 SmallVectorImpl<MCFixup> &Fixups, 99 const MCSubtargetInfo &STI) const; 100 101 unsigned getMemEncoding(const MCInst &MI, unsigned OpNo, 102 SmallVectorImpl<MCFixup> &Fixups, 103 const MCSubtargetInfo &STI) const; 104 unsigned getMemEncodingMMImm12(const MCInst &MI, unsigned OpNo, 105 SmallVectorImpl<MCFixup> &Fixups, 106 const MCSubtargetInfo &STI) const; 107 unsigned getSizeExtEncoding(const MCInst &MI, unsigned OpNo, 108 SmallVectorImpl<MCFixup> &Fixups, 109 const MCSubtargetInfo &STI) const; 110 unsigned getSizeInsEncoding(const MCInst &MI, unsigned OpNo, 111 SmallVectorImpl<MCFixup> &Fixups, 112 const MCSubtargetInfo &STI) const; 113 114 // getLSAImmEncoding - Return binary encoding of LSA immediate. 115 unsigned getLSAImmEncoding(const MCInst &MI, unsigned OpNo, 116 SmallVectorImpl<MCFixup> &Fixups, 117 const MCSubtargetInfo &STI) const; 118 119 unsigned getExprOpValue(const MCExpr *Expr, SmallVectorImpl<MCFixup> &Fixups, 120 const MCSubtargetInfo &STI) const; 121 122}; // class MipsMCCodeEmitter 123} // namespace llvm. 124 125#endif 126