| Stefan Pintilie | 9d6445d | 2018-11-21 21:23:50 +0000 | [diff] [blame] | 1 | //===-- PPCMCCodeEmitter.h - Convert PPC code to machine code -------------===// |
| 2 | // |
| Chandler Carruth | 2946cd7 | 2019-01-19 08:50:56 +0000 | [diff] [blame] | 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 |
| Stefan Pintilie | 9d6445d | 2018-11-21 21:23:50 +0000 | [diff] [blame] | 6 | // |
| 7 | //===----------------------------------------------------------------------===// |
| 8 | // |
| 9 | // This file implements the PPCMCCodeEmitter class. |
| 10 | // |
| 11 | //===----------------------------------------------------------------------===// |
| 12 | |
| 13 | #ifndef LLVM_LIB_TARGET_PPC_MCCODEEMITTER_PPCCODEEMITTER_H |
| 14 | #define LLVM_LIB_TARGET_PPC_MCCODEEMITTER_PPCCODEEMITTER_H |
| 15 | |
| 16 | #include "llvm/MC/MCAsmInfo.h" |
| 17 | #include "llvm/MC/MCCodeEmitter.h" |
| 18 | #include "llvm/MC/MCSubtargetInfo.h" |
| 19 | #include "llvm/MC/MCInstrInfo.h" |
| 20 | #include "llvm/MC/MCContext.h" |
| 21 | #include "llvm/MC/MCInst.h" |
| 22 | |
| 23 | namespace llvm { |
| 24 | |
| 25 | class PPCMCCodeEmitter : public MCCodeEmitter { |
| 26 | const MCInstrInfo &MCII; |
| 27 | const MCContext &CTX; |
| 28 | bool IsLittleEndian; |
| 29 | |
| 30 | public: |
| 31 | PPCMCCodeEmitter(const MCInstrInfo &mcii, MCContext &ctx) |
| 32 | : MCII(mcii), CTX(ctx), |
| 33 | IsLittleEndian(ctx.getAsmInfo()->isLittleEndian()) {} |
| 34 | PPCMCCodeEmitter(const PPCMCCodeEmitter &) = delete; |
| 35 | void operator=(const PPCMCCodeEmitter &) = delete; |
| 36 | ~PPCMCCodeEmitter() override = default; |
| 37 | |
| 38 | unsigned getDirectBrEncoding(const MCInst &MI, unsigned OpNo, |
| 39 | SmallVectorImpl<MCFixup> &Fixups, |
| 40 | const MCSubtargetInfo &STI) const; |
| 41 | unsigned getCondBrEncoding(const MCInst &MI, unsigned OpNo, |
| 42 | SmallVectorImpl<MCFixup> &Fixups, |
| 43 | const MCSubtargetInfo &STI) const; |
| 44 | unsigned getAbsDirectBrEncoding(const MCInst &MI, unsigned OpNo, |
| 45 | SmallVectorImpl<MCFixup> &Fixups, |
| 46 | const MCSubtargetInfo &STI) const; |
| 47 | unsigned getAbsCondBrEncoding(const MCInst &MI, unsigned OpNo, |
| 48 | SmallVectorImpl<MCFixup> &Fixups, |
| 49 | const MCSubtargetInfo &STI) const; |
| 50 | unsigned getImm16Encoding(const MCInst &MI, unsigned OpNo, |
| 51 | SmallVectorImpl<MCFixup> &Fixups, |
| 52 | const MCSubtargetInfo &STI) const; |
| 53 | unsigned getMemRIEncoding(const MCInst &MI, unsigned OpNo, |
| 54 | SmallVectorImpl<MCFixup> &Fixups, |
| 55 | const MCSubtargetInfo &STI) const; |
| 56 | unsigned getMemRIXEncoding(const MCInst &MI, unsigned OpNo, |
| 57 | SmallVectorImpl<MCFixup> &Fixups, |
| 58 | const MCSubtargetInfo &STI) const; |
| 59 | unsigned getMemRIX16Encoding(const MCInst &MI, unsigned OpNo, |
| 60 | SmallVectorImpl<MCFixup> &Fixups, |
| 61 | const MCSubtargetInfo &STI) const; |
| 62 | unsigned getSPE8DisEncoding(const MCInst &MI, unsigned OpNo, |
| 63 | SmallVectorImpl<MCFixup> &Fixups, |
| 64 | const MCSubtargetInfo &STI) const; |
| 65 | unsigned getSPE4DisEncoding(const MCInst &MI, unsigned OpNo, |
| 66 | SmallVectorImpl<MCFixup> &Fixups, |
| 67 | const MCSubtargetInfo &STI) const; |
| 68 | unsigned getSPE2DisEncoding(const MCInst &MI, unsigned OpNo, |
| 69 | SmallVectorImpl<MCFixup> &Fixups, |
| 70 | const MCSubtargetInfo &STI) const; |
| 71 | unsigned getTLSRegEncoding(const MCInst &MI, unsigned OpNo, |
| 72 | SmallVectorImpl<MCFixup> &Fixups, |
| 73 | const MCSubtargetInfo &STI) const; |
| 74 | unsigned getTLSCallEncoding(const MCInst &MI, unsigned OpNo, |
| 75 | SmallVectorImpl<MCFixup> &Fixups, |
| 76 | const MCSubtargetInfo &STI) const; |
| 77 | unsigned get_crbitm_encoding(const MCInst &MI, unsigned OpNo, |
| 78 | SmallVectorImpl<MCFixup> &Fixups, |
| 79 | const MCSubtargetInfo &STI) const; |
| 80 | |
| 81 | /// getMachineOpValue - Return binary encoding of operand. If the machine |
| 82 | /// operand requires relocation, record the relocation and return zero. |
| 83 | unsigned getMachineOpValue(const MCInst &MI, const MCOperand &MO, |
| 84 | SmallVectorImpl<MCFixup> &Fixups, |
| 85 | const MCSubtargetInfo &STI) const; |
| 86 | |
| 87 | // getBinaryCodeForInstr - TableGen'erated function for getting the |
| 88 | // binary encoding for an instruction. |
| 89 | uint64_t getBinaryCodeForInstr(const MCInst &MI, |
| 90 | SmallVectorImpl<MCFixup> &Fixups, |
| 91 | const MCSubtargetInfo &STI) const; |
| 92 | |
| 93 | void encodeInstruction(const MCInst &MI, raw_ostream &OS, |
| 94 | SmallVectorImpl<MCFixup> &Fixups, |
| 95 | const MCSubtargetInfo &STI) const override; |
| 96 | |
| 97 | // Get the number of bytes used to encode the given MCInst. |
| 98 | unsigned getInstSizeInBytes(const MCInst &MI) const; |
| 99 | |
| 100 | private: |
| Stanislav Mekhanoshin | e98944e | 2019-03-11 17:04:35 +0000 | [diff] [blame] | 101 | FeatureBitset computeAvailableFeatures(const FeatureBitset &FB) const; |
| 102 | void |
| 103 | verifyInstructionPredicates(const MCInst &MI, |
| 104 | const FeatureBitset &AvailableFeatures) const; |
| Stefan Pintilie | 9d6445d | 2018-11-21 21:23:50 +0000 | [diff] [blame] | 105 | }; |
| 106 | |
| 107 | } // namespace llvm |
| 108 | |
| 109 | #endif // LLVM_LIB_TARGET_PPC_MCCODEEMITTER_PPCCODEEMITTER_H |