| Stefan Pintilie | 9d6445d | 2018-11-21 21:23:50 +0000 | [diff] [blame] | 1 | //===-- PPCMCCodeEmitter.h - Convert PPC 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 implements the PPCMCCodeEmitter class. |
| 11 | // |
| 12 | //===----------------------------------------------------------------------===// |
| 13 | |
| 14 | #ifndef LLVM_LIB_TARGET_PPC_MCCODEEMITTER_PPCCODEEMITTER_H |
| 15 | #define LLVM_LIB_TARGET_PPC_MCCODEEMITTER_PPCCODEEMITTER_H |
| 16 | |
| 17 | #include "llvm/MC/MCAsmInfo.h" |
| 18 | #include "llvm/MC/MCCodeEmitter.h" |
| 19 | #include "llvm/MC/MCSubtargetInfo.h" |
| 20 | #include "llvm/MC/MCInstrInfo.h" |
| 21 | #include "llvm/MC/MCContext.h" |
| 22 | #include "llvm/MC/MCInst.h" |
| 23 | |
| 24 | namespace llvm { |
| 25 | |
| 26 | class PPCMCCodeEmitter : public MCCodeEmitter { |
| 27 | const MCInstrInfo &MCII; |
| 28 | const MCContext &CTX; |
| 29 | bool IsLittleEndian; |
| 30 | |
| 31 | public: |
| 32 | PPCMCCodeEmitter(const MCInstrInfo &mcii, MCContext &ctx) |
| 33 | : MCII(mcii), CTX(ctx), |
| 34 | IsLittleEndian(ctx.getAsmInfo()->isLittleEndian()) {} |
| 35 | PPCMCCodeEmitter(const PPCMCCodeEmitter &) = delete; |
| 36 | void operator=(const PPCMCCodeEmitter &) = delete; |
| 37 | ~PPCMCCodeEmitter() override = default; |
| 38 | |
| 39 | unsigned getDirectBrEncoding(const MCInst &MI, unsigned OpNo, |
| 40 | SmallVectorImpl<MCFixup> &Fixups, |
| 41 | const MCSubtargetInfo &STI) const; |
| 42 | unsigned getCondBrEncoding(const MCInst &MI, unsigned OpNo, |
| 43 | SmallVectorImpl<MCFixup> &Fixups, |
| 44 | const MCSubtargetInfo &STI) const; |
| 45 | unsigned getAbsDirectBrEncoding(const MCInst &MI, unsigned OpNo, |
| 46 | SmallVectorImpl<MCFixup> &Fixups, |
| 47 | const MCSubtargetInfo &STI) const; |
| 48 | unsigned getAbsCondBrEncoding(const MCInst &MI, unsigned OpNo, |
| 49 | SmallVectorImpl<MCFixup> &Fixups, |
| 50 | const MCSubtargetInfo &STI) const; |
| 51 | unsigned getImm16Encoding(const MCInst &MI, unsigned OpNo, |
| 52 | SmallVectorImpl<MCFixup> &Fixups, |
| 53 | const MCSubtargetInfo &STI) const; |
| 54 | unsigned getMemRIEncoding(const MCInst &MI, unsigned OpNo, |
| 55 | SmallVectorImpl<MCFixup> &Fixups, |
| 56 | const MCSubtargetInfo &STI) const; |
| 57 | unsigned getMemRIXEncoding(const MCInst &MI, unsigned OpNo, |
| 58 | SmallVectorImpl<MCFixup> &Fixups, |
| 59 | const MCSubtargetInfo &STI) const; |
| 60 | unsigned getMemRIX16Encoding(const MCInst &MI, unsigned OpNo, |
| 61 | SmallVectorImpl<MCFixup> &Fixups, |
| 62 | const MCSubtargetInfo &STI) const; |
| 63 | unsigned getSPE8DisEncoding(const MCInst &MI, unsigned OpNo, |
| 64 | SmallVectorImpl<MCFixup> &Fixups, |
| 65 | const MCSubtargetInfo &STI) const; |
| 66 | unsigned getSPE4DisEncoding(const MCInst &MI, unsigned OpNo, |
| 67 | SmallVectorImpl<MCFixup> &Fixups, |
| 68 | const MCSubtargetInfo &STI) const; |
| 69 | unsigned getSPE2DisEncoding(const MCInst &MI, unsigned OpNo, |
| 70 | SmallVectorImpl<MCFixup> &Fixups, |
| 71 | const MCSubtargetInfo &STI) const; |
| 72 | unsigned getTLSRegEncoding(const MCInst &MI, unsigned OpNo, |
| 73 | SmallVectorImpl<MCFixup> &Fixups, |
| 74 | const MCSubtargetInfo &STI) const; |
| 75 | unsigned getTLSCallEncoding(const MCInst &MI, unsigned OpNo, |
| 76 | SmallVectorImpl<MCFixup> &Fixups, |
| 77 | const MCSubtargetInfo &STI) const; |
| 78 | unsigned get_crbitm_encoding(const MCInst &MI, unsigned OpNo, |
| 79 | SmallVectorImpl<MCFixup> &Fixups, |
| 80 | const MCSubtargetInfo &STI) const; |
| 81 | |
| 82 | /// getMachineOpValue - Return binary encoding of operand. If the machine |
| 83 | /// operand requires relocation, record the relocation and return zero. |
| 84 | unsigned getMachineOpValue(const MCInst &MI, const MCOperand &MO, |
| 85 | SmallVectorImpl<MCFixup> &Fixups, |
| 86 | const MCSubtargetInfo &STI) const; |
| 87 | |
| 88 | // getBinaryCodeForInstr - TableGen'erated function for getting the |
| 89 | // binary encoding for an instruction. |
| 90 | uint64_t getBinaryCodeForInstr(const MCInst &MI, |
| 91 | SmallVectorImpl<MCFixup> &Fixups, |
| 92 | const MCSubtargetInfo &STI) const; |
| 93 | |
| 94 | void encodeInstruction(const MCInst &MI, raw_ostream &OS, |
| 95 | SmallVectorImpl<MCFixup> &Fixups, |
| 96 | const MCSubtargetInfo &STI) const override; |
| 97 | |
| 98 | // Get the number of bytes used to encode the given MCInst. |
| 99 | unsigned getInstSizeInBytes(const MCInst &MI) const; |
| 100 | |
| 101 | private: |
| 102 | uint64_t computeAvailableFeatures(const FeatureBitset &FB) const; |
| 103 | void verifyInstructionPredicates(const MCInst &MI, |
| 104 | uint64_t AvailableFeatures) const; |
| 105 | }; |
| 106 | |
| 107 | } // namespace llvm |
| 108 | |
| 109 | #endif // LLVM_LIB_TARGET_PPC_MCCODEEMITTER_PPCCODEEMITTER_H |