/* Capstone Disassembly Engine, http://www.capstone-engine.org */

/* By Nguyen Anh Quynh <aquynh@gmail.com>, 2013-2022, */

/*    Rot127 <unisono@quyllur.org> 2022-2023 */

/* Automatically translated source file from LLVM. */

/* LLVM-commit: <commit> */

/* LLVM-tag: <tag> */

/* Only small edits allowed. */

/* For multiple similar edits, please create a Patch for the translator. */

/* Capstone's C++ file translator: */

/* https://github.com/capstone-engine/capstone/tree/next/suite/auto-sync */

//===-- XtensaDisassembler.cpp - Disassembler for Xtensa ------------------===//

//

//                     The LLVM Compiler Infrastructure

//

// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.

// See https://llvm.org/LICENSE.txt for license information.

// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception

//

//===----------------------------------------------------------------------===//

//

// This file implements the XtensaDisassembler class.

//

//===----------------------------------------------------------------------===//

#include <stdio.h>

#include <string.h>

#include <stdlib.h>

#include <capstone/platform.h>

#include "../../MathExtras.h"

#include "../../MCDisassembler.h"

#include "../../MCFixedLenDisassembler.h"

#include "../../SStream.h"

#include "../../cs_priv.h"

#include "../../utils.h"

#include "priv.h"

#define GET_INSTRINFO_MC_DESC

#include "XtensaGenInstrInfo.inc"

#define CONCAT(a, b) CONCAT_(a, b)

#define CONCAT_(a, b) a##_##b

#define DEBUG_TYPE "Xtensa-disassembler"

static const unsigned ARDecoderTable[] = {

  Xtensa_A0,  Xtensa_SP,  Xtensa_A2,  Xtensa_A3, Xtensa_A4,  Xtensa_A5,

  Xtensa_A6,  Xtensa_A7,  Xtensa_A8,  Xtensa_A9, Xtensa_A10, Xtensa_A11,

  Xtensa_A12, Xtensa_A13, Xtensa_A14, Xtensa_A15

};

static const unsigned AE_DRDecoderTable[] = {

  Xtensa_AED0,  Xtensa_AED1,  Xtensa_AED2,  Xtensa_AED3,

  Xtensa_AED4,  Xtensa_AED5,  Xtensa_AED6,  Xtensa_AED7,

  Xtensa_AED8,  Xtensa_AED9,  Xtensa_AED10, Xtensa_AED11,

  Xtensa_AED12, Xtensa_AED13, Xtensa_AED14, Xtensa_AED15

};

static const unsigned AE_VALIGNDecoderTable[] = { Xtensa_U0, Xtensa_U1,

              Xtensa_U2, Xtensa_U3 };

static DecodeStatus DecodeAE_DRRegisterClass(MCInst *Inst, uint64_t RegNo,

               uint64_t Address,

               const void *Decoder)

{

  if (RegNo >= ARR_SIZE(AE_DRDecoderTable))

    return MCDisassembler_Fail;

  unsigned Reg = AE_DRDecoderTable[RegNo];

  MCOperand_CreateReg0(Inst, (Reg));

  return MCDisassembler_Success;

}

static DecodeStatus DecodeAE_VALIGNRegisterClass(MCInst *Inst, uint64_t RegNo,

             uint64_t Address,

             const void *Decoder)

{

  if (RegNo >= ARR_SIZE(AE_VALIGNDecoderTable))

    return MCDisassembler_Fail;

  unsigned Reg = AE_VALIGNDecoderTable[RegNo];

  MCOperand_CreateReg0(Inst, (Reg));

  return MCDisassembler_Success;

}

static DecodeStatus DecodeARRegisterClass(MCInst *Inst, uint64_t RegNo,

            uint64_t Address, const void *Decoder)

{

  if (RegNo >= ARR_SIZE(ARDecoderTable))

    return MCDisassembler_Fail;

  unsigned Reg = ARDecoderTable[RegNo];

  MCOperand_CreateReg0(Inst, (Reg));

  return MCDisassembler_Success;

}

static const unsigned QRDecoderTable[] = { Xtensa_Q0, Xtensa_Q1, Xtensa_Q2,

             Xtensa_Q3, Xtensa_Q4, Xtensa_Q5,

             Xtensa_Q6, Xtensa_Q7 };

static DecodeStatus DecodeQRRegisterClass(MCInst *Inst, uint64_t RegNo,

            uint64_t Address, const void *Decoder)

{

  if (RegNo >= ARR_SIZE(QRDecoderTable))

    return MCDisassembler_Fail;

  unsigned Reg = QRDecoderTable[RegNo];

  MCOperand_CreateReg0(Inst, (Reg));

  return MCDisassembler_Success;

}

static const unsigned FPRDecoderTable[] = {

  Xtensa_F0,  Xtensa_F1,  Xtensa_F2,  Xtensa_F3, Xtensa_F4,  Xtensa_F5,

  Xtensa_F6,  Xtensa_F7,  Xtensa_F8,  Xtensa_F9, Xtensa_F10, Xtensa_F11,

  Xtensa_F12, Xtensa_F13, Xtensa_F14, Xtensa_F15

};

static DecodeStatus DecodeFPRRegisterClass(MCInst *Inst, uint64_t RegNo,

             uint64_t Address,

             const void *Decoder)

{

  if (RegNo >= ARR_SIZE(FPRDecoderTable))

    return MCDisassembler_Fail;

  unsigned Reg = FPRDecoderTable[RegNo];

  MCOperand_CreateReg0(Inst, (Reg));

  return MCDisassembler_Success;

}

static const unsigned BRDecoderTable[] = {

  Xtensa_B0,  Xtensa_B1,  Xtensa_B2,  Xtensa_B3, Xtensa_B4,  Xtensa_B5,

  Xtensa_B6,  Xtensa_B7,  Xtensa_B8,  Xtensa_B9, Xtensa_B10, Xtensa_B11,

  Xtensa_B12, Xtensa_B13, Xtensa_B14, Xtensa_B15

};

static const unsigned BR2DecoderTable[] = { Xtensa_B0_B1,   Xtensa_B2_B3,

              Xtensa_B4_B5,   Xtensa_B6_B7,

              Xtensa_B8_B9,   Xtensa_B10_B11,

              Xtensa_B12_B13, Xtensa_B14_B15 };

static const unsigned BR4DecoderTable[] = { Xtensa_B0_B1_B2_B3,

              Xtensa_B4_B5_B6_B7,

              Xtensa_B8_B9_B10_B11,

              Xtensa_B12_B13_B14_B15 };

static DecodeStatus DecodeXtensaRegisterClass(MCInst *Inst, uint64_t RegNo,

                uint64_t Address,

                const void *Decoder,

                const unsigned *DecoderTable,

                size_t DecoderTableLen)

{

  if (RegNo >= DecoderTableLen)

    return MCDisassembler_Fail;

  unsigned Reg = DecoderTable[RegNo];

  MCOperand_CreateReg0(Inst, (Reg));

  return MCDisassembler_Success;

}

static DecodeStatus DecodeBR2RegisterClass(MCInst *Inst, uint64_t RegNo,

             uint64_t Address,

             const void *Decoder)

{

  return DecodeXtensaRegisterClass(Inst, RegNo, Address, Decoder,

           BR2DecoderTable,

           ARR_SIZE(BR2DecoderTable));

}

static DecodeStatus DecodeBR4RegisterClass(MCInst *Inst, uint64_t RegNo,

             uint64_t Address,

             const void *Decoder)

{

  return DecodeXtensaRegisterClass(Inst, RegNo, Address, Decoder,

           BR4DecoderTable,

           ARR_SIZE(BR4DecoderTable));

}

static DecodeStatus DecodeBRRegisterClass(MCInst *Inst, uint64_t RegNo,

            uint64_t Address, const void *Decoder)

{

  if (RegNo >= ARR_SIZE(BRDecoderTable))

    return MCDisassembler_Fail;

  unsigned Reg = BRDecoderTable[RegNo];

  MCOperand_CreateReg0(Inst, (Reg));

  return MCDisassembler_Success;

}

static const unsigned MRDecoderTable[] = { Xtensa_M0, Xtensa_M1, Xtensa_M2,

             Xtensa_M3 };

static DecodeStatus DecodeMRRegisterClass(MCInst *Inst, uint64_t RegNo,

            uint64_t Address, const void *Decoder)

{

  if (RegNo >= ARR_SIZE(MRDecoderTable))

    return MCDisassembler_Fail;

  unsigned Reg = MRDecoderTable[RegNo];

  MCOperand_CreateReg0(Inst, (Reg));

  return MCDisassembler_Success;

}

static const unsigned MR01DecoderTable[] = { Xtensa_M0, Xtensa_M1 };

static DecodeStatus DecodeMR01RegisterClass(MCInst *Inst, uint64_t RegNo,

              uint64_t Address,

              const void *Decoder)

{

  if (RegNo >= ARR_SIZE(MR01DecoderTable))

    return MCDisassembler_Fail;

  unsigned Reg = MR01DecoderTable[RegNo];

  MCOperand_CreateReg0(Inst, (Reg));

  return MCDisassembler_Success;

}

static const unsigned MR23DecoderTable[] = { Xtensa_M2, Xtensa_M3 };

static DecodeStatus DecodeMR23RegisterClass(MCInst *Inst, uint64_t RegNo,

              uint64_t Address,

              const void *Decoder)

{

  if (RegNo >= ARR_SIZE(MR23DecoderTable))

    return MCDisassembler_Fail;

  unsigned Reg = MR23DecoderTable[RegNo];

  MCOperand_CreateReg0(Inst, (Reg));

  return MCDisassembler_Success;

}

bool Xtensa_getFeatureBits(unsigned int mode, unsigned int feature)

{

  // we support everything

  return true;

}

// Verify SR and UR

bool CheckRegister(MCInst *Inst, unsigned RegNo)

{

  unsigned NumIntLevels = 0;

  unsigned NumTimers = 0;

  unsigned NumMiscSR = 0;

  bool IsESP32 = false;

  bool IsESP32S2 = false;

  bool Res = true;

  // Assume that CPU is esp32 by default

  if ((Inst->csh->mode & CS_MODE_XTENSA_ESP32)) {

    NumIntLevels = 6;

    NumTimers = 3;

    NumMiscSR = 4;

    IsESP32 = true;

  } else if (Inst->csh->mode & CS_MODE_XTENSA_ESP32S2) {

    NumIntLevels = 6;

    NumTimers = 3;

    NumMiscSR = 4;

    IsESP32S2 = true;

  } else if (Inst->csh->mode & CS_MODE_XTENSA_ESP8266) {

    NumIntLevels = 2;

    NumTimers = 1;

  }

  switch (RegNo) {

  case Xtensa_LBEG:

  case Xtensa_LEND:

  case Xtensa_LCOUNT:

    Res = Xtensa_getFeatureBits(Inst->csh->mode,

              Xtensa_FeatureLoop);

    break;

  case Xtensa_BREG:

    Res = Xtensa_getFeatureBits(Inst->csh->mode,

              Xtensa_FeatureBoolean);

    break;

  case Xtensa_LITBASE:

    Res = Xtensa_getFeatureBits(Inst->csh->mode,

              Xtensa_FeatureExtendedL32R);

    break;

  case Xtensa_SCOMPARE1:

    Res = Xtensa_getFeatureBits(Inst->csh->mode,

              Xtensa_FeatureS32C1I);

    break;

  case Xtensa_ACCLO:

  case Xtensa_ACCHI:

  case Xtensa_M0:

  case Xtensa_M1:

  case Xtensa_M2:

  case Xtensa_M3:

    Res = Xtensa_getFeatureBits(Inst->csh->mode,

              Xtensa_FeatureMAC16);

    break;

  case Xtensa_WINDOWBASE:

  case Xtensa_WINDOWSTART:

    Res = Xtensa_getFeatureBits(Inst->csh->mode,

              Xtensa_FeatureWindowed);

    break;

  case Xtensa_IBREAKENABLE:

  case Xtensa_IBREAKA0:

  case Xtensa_IBREAKA1:

  case Xtensa_DBREAKA0:

  case Xtensa_DBREAKA1:

  case Xtensa_DBREAKC0:

  case Xtensa_DBREAKC1:

  case Xtensa_DEBUGCAUSE:

  case Xtensa_ICOUNT:

  case Xtensa_ICOUNTLEVEL:

    Res = Xtensa_getFeatureBits(Inst->csh->mode,

              Xtensa_FeatureDebug);

    break;

  case Xtensa_ATOMCTL:

    Res = Xtensa_getFeatureBits(Inst->csh->mode,

              Xtensa_FeatureATOMCTL);

    break;

  case Xtensa_MEMCTL:

    Res = Xtensa_getFeatureBits(Inst->csh->mode,

              Xtensa_FeatureMEMCTL);

    break;

  case Xtensa_EPC1:

    Res = Xtensa_getFeatureBits(Inst->csh->mode,

              Xtensa_FeatureException);

    break;

  case Xtensa_EPC2:

  case Xtensa_EPC3:

  case Xtensa_EPC4:

  case Xtensa_EPC5:

  case Xtensa_EPC6:

  case Xtensa_EPC7:

    Res = Xtensa_getFeatureBits(Inst->csh->mode,

              Xtensa_FeatureHighPriInterrupts);

    Res = Res & (NumIntLevels >= (RegNo - Xtensa_EPC1));

    break;

  case Xtensa_EPS2:

  case Xtensa_EPS3:

  case Xtensa_EPS4:

  case Xtensa_EPS5:

  case Xtensa_EPS6:

  case Xtensa_EPS7:

    Res = Xtensa_getFeatureBits(Inst->csh->mode,

              Xtensa_FeatureHighPriInterrupts);

    Res = Res & (NumIntLevels > (RegNo - Xtensa_EPS2));

    break;

  case Xtensa_EXCSAVE1:

    Res = Xtensa_getFeatureBits(Inst->csh->mode,

              Xtensa_FeatureException);

    break;

  case Xtensa_EXCSAVE2:

  case Xtensa_EXCSAVE3:

  case Xtensa_EXCSAVE4:

  case Xtensa_EXCSAVE5:

  case Xtensa_EXCSAVE6:

  case Xtensa_EXCSAVE7:

    Res = Xtensa_getFeatureBits(Inst->csh->mode,

              Xtensa_FeatureHighPriInterrupts);

    Res = Res & (NumIntLevels >= (RegNo - Xtensa_EXCSAVE1));

    break;

  case Xtensa_DEPC:

  case Xtensa_EXCCAUSE:

  case Xtensa_EXCVADDR:

    Res = Xtensa_getFeatureBits(Inst->csh->mode,

              Xtensa_FeatureException);

    break;

  case Xtensa_CPENABLE:

    Res = Xtensa_getFeatureBits(Inst->csh->mode,

              Xtensa_FeatureCoprocessor);

    break;

  case Xtensa_VECBASE:

    Res = Xtensa_getFeatureBits(Inst->csh->mode,

              Xtensa_FeatureRelocatableVector);

    break;

  case Xtensa_CCOUNT:

    Res = Xtensa_getFeatureBits(Inst->csh->mode,

              Xtensa_FeatureTimerInt);

    Res &= (NumTimers > 0);

    break;

  case Xtensa_CCOMPARE0:

  case Xtensa_CCOMPARE1:

  case Xtensa_CCOMPARE2:

    Res = Xtensa_getFeatureBits(Inst->csh->mode,

              Xtensa_FeatureTimerInt);

    Res &= (NumTimers > (RegNo - Xtensa_CCOMPARE0));

    break;

  case Xtensa_PRID:

    Res = Xtensa_getFeatureBits(Inst->csh->mode,

              Xtensa_FeaturePRID);

    break;

  case Xtensa_INTERRUPT:

  case Xtensa_INTCLEAR:

  case Xtensa_INTENABLE:

    Res = Xtensa_getFeatureBits(Inst->csh->mode,

              Xtensa_FeatureInterrupt);

    break;

  case Xtensa_MISC0:

  case Xtensa_MISC1:

  case Xtensa_MISC2:

  case Xtensa_MISC3:

    Res = Xtensa_getFeatureBits(Inst->csh->mode,

              Xtensa_FeatureMiscSR);

    Res &= (NumMiscSR > (RegNo - Xtensa_MISC0));

    break;

  case Xtensa_THREADPTR:

    Res = Xtensa_getFeatureBits(Inst->csh->mode,

              Xtensa_FeatureTHREADPTR);

    break;

  case Xtensa_GPIO_OUT:

    Res = IsESP32S2;

    break;

  case Xtensa_EXPSTATE:

    Res = IsESP32;

    break;

  case Xtensa_FCR:

  case Xtensa_FSR:

    Res = Xtensa_getFeatureBits(Inst->csh->mode,

              Xtensa_FeatureSingleFloat);

    break;

  case Xtensa_F64R_LO:

  case Xtensa_F64R_HI:

  case Xtensa_F64S:

    Res = Xtensa_getFeatureBits(Inst->csh->mode,

              Xtensa_FeatureDFPAccel);

    break;

  }

  return Res;

}

static const unsigned SRDecoderTable[] = {

  Xtensa_LBEG,      0,   Xtensa_LEND,       1,

  Xtensa_LCOUNT,      2,   Xtensa_SAR,        3,

  Xtensa_BREG,      4,   Xtensa_LITBASE,      5,

  Xtensa_SCOMPARE1,   12,  Xtensa_ACCLO,        16,

  Xtensa_ACCHI,     17,  Xtensa_M0,       32,

  Xtensa_M1,      33,  Xtensa_M2,       34,

  Xtensa_M3,      35,  Xtensa_WINDOWBASE,   72,

  Xtensa_WINDOWSTART, 73,  Xtensa_IBREAKENABLE, 96,

  Xtensa_MEMCTL,      97,  Xtensa_ATOMCTL,      99,

  Xtensa_DDR,     104, Xtensa_IBREAKA0,     128,

  Xtensa_IBREAKA1,    129, Xtensa_DBREAKA0,     144,

  Xtensa_DBREAKA1,    145, Xtensa_DBREAKC0,     160,

  Xtensa_DBREAKC1,    161, Xtensa_CONFIGID0,    176,

  Xtensa_EPC1,      177, Xtensa_EPC2,       178,

  Xtensa_EPC3,      179, Xtensa_EPC4,       180,

  Xtensa_EPC5,      181, Xtensa_EPC6,       182,

  Xtensa_EPC7,      183, Xtensa_DEPC,       192,

  Xtensa_EPS2,      194, Xtensa_EPS3,       195,

  Xtensa_EPS4,      196, Xtensa_EPS5,       197,

  Xtensa_EPS6,      198, Xtensa_EPS7,       199,

  Xtensa_CONFIGID1,   208, Xtensa_EXCSAVE1,     209,

  Xtensa_EXCSAVE2,    210, Xtensa_EXCSAVE3,     211,

  Xtensa_EXCSAVE4,    212, Xtensa_EXCSAVE5,     213,

  Xtensa_EXCSAVE6,    214, Xtensa_EXCSAVE7,     215,

  Xtensa_CPENABLE,    224, Xtensa_INTERRUPT,    226,

  Xtensa_INTCLEAR,    227, Xtensa_INTENABLE,    228,

  Xtensa_PS,      230, Xtensa_VECBASE,      231,

  Xtensa_EXCCAUSE,    232, Xtensa_DEBUGCAUSE,   233,

  Xtensa_CCOUNT,      234, Xtensa_PRID,       235,

  Xtensa_ICOUNT,      236, Xtensa_ICOUNTLEVEL,  237,

  Xtensa_EXCVADDR,    238, Xtensa_CCOMPARE0,    240,

  Xtensa_CCOMPARE1,   241, Xtensa_CCOMPARE2,    242,

  Xtensa_MISC0,     244, Xtensa_MISC1,        245,

  Xtensa_MISC2,     246, Xtensa_MISC3,        247

};

static DecodeStatus DecodeSRRegisterClass(MCInst *Inst, uint64_t RegNo,

            uint64_t Address, const void *Decoder)

{

  //  const llvm_MCSubtargetInfo STI =

  //    ((const MCDisassembler *)Decoder)->getSubtargetInfo();

  if (RegNo > 255)

    return MCDisassembler_Fail;

  for (unsigned i = 0; i < ARR_SIZE(SRDecoderTable); i += 2) {

    if (SRDecoderTable[i + 1] == RegNo) {

      unsigned Reg = SRDecoderTable[i];

      if (!CheckRegister(Inst, Reg))

        return MCDisassembler_Fail;

      MCOperand_CreateReg0(Inst, (Reg));

      return MCDisassembler_Success;

    }

  }

  return MCDisassembler_Fail;

}

static const unsigned URDecoderTable[] = {

  Xtensa_GPIO_OUT, 0,   Xtensa_EXPSTATE, 230, Xtensa_THREADPTR, 231,

  Xtensa_FCR,  232, Xtensa_FSR,      233, Xtensa_F64R_LO,   234,

  Xtensa_F64R_HI,  235, Xtensa_F64S,     236

};

static DecodeStatus DecodeURRegisterClass(MCInst *Inst, uint64_t RegNo,

            uint64_t Address, const void *Decoder)

{

  if (RegNo > 255)

    return MCDisassembler_Fail;

  for (unsigned i = 0; i < ARR_SIZE(URDecoderTable); i += 2) {

    if (URDecoderTable[i + 1] == RegNo) {

      unsigned Reg = URDecoderTable[i];

      if (!CheckRegister(Inst, Reg))

        return MCDisassembler_Fail;

      MCOperand_CreateReg0(Inst, (Reg));

      return MCDisassembler_Success;

    }

  }

  return MCDisassembler_Fail;

}

static bool tryAddingSymbolicOperand(int64_t Value, bool isBranch,

             uint64_t Address, uint64_t Offset,

             uint64_t InstSize, MCInst *MI,

             const void *Decoder)

{

  //  return Dis->tryAddingSymbolicOperand(MI, Value, Address, isBranch,

  //               Offset, /*OpSize=*/0, InstSize);

  return false;

}

static DecodeStatus decodeCallOperand(MCInst *Inst, uint64_t Imm,

              int64_t Address, const void *Decoder)

{

  CS_ASSERT(isUIntN(18, Imm) && "Invalid immediate");

  MCOperand_CreateImm0(Inst, (SignExtend64((Imm << 2), 20)));

  return MCDisassembler_Success;

}

static DecodeStatus decodeJumpOperand(MCInst *Inst, uint64_t Imm,

              int64_t Address, const void *Decoder)

{

  CS_ASSERT(isUIntN(18, Imm) && "Invalid immediate");

  MCOperand_CreateImm0(Inst, (SignExtend64((Imm), 18)));

  return MCDisassembler_Success;

}

static DecodeStatus decodeBranchOperand(MCInst *Inst, uint64_t Imm,

          int64_t Address, const void *Decoder)

{

  switch (MCInst_getOpcode(Inst)) {

  case Xtensa_BEQZ:

  case Xtensa_BGEZ:

  case Xtensa_BLTZ:

  case Xtensa_BNEZ:

    CS_ASSERT(isUIntN(12, Imm) && "Invalid immediate");

    if (!tryAddingSymbolicOperand(

          SignExtend64((Imm), 12) + 4 + Address, true,

          Address, 0, 3, Inst, Decoder))

      MCOperand_CreateImm0(Inst, (SignExtend64((Imm), 12)));

    break;

  default:

    CS_ASSERT(isUIntN(8, Imm) && "Invalid immediate");

    if (!tryAddingSymbolicOperand(

          SignExtend64((Imm), 8) + 4 + Address, true, Address,

          0, 3, Inst, Decoder))

      MCOperand_CreateImm0(Inst, (SignExtend64((Imm), 8)));

  }

  return MCDisassembler_Success;

}

static DecodeStatus decodeLoopOperand(MCInst *Inst, uint64_t Imm,

              int64_t Address, const void *Decoder)

{

  CS_ASSERT(isUIntN(8, Imm) && "Invalid immediate");

  if (!tryAddingSymbolicOperand(Imm + 4 + Address, true, Address, 0, 3,

              Inst, Decoder))

    MCOperand_CreateImm0(Inst, (Imm));

  return MCDisassembler_Success;

}

static DecodeStatus decodeL32ROperand(MCInst *Inst, uint64_t Imm,

              int64_t Address, const void *Decoder)

{

  CS_ASSERT(isUIntN(16, Imm) && "Invalid immediate");

  MCOperand_CreateImm0(Inst, OneExtend64(Imm << 2, 18));

  return MCDisassembler_Success;

}

static DecodeStatus decodeImm8Operand(MCInst *Inst, uint64_t Imm,

              int64_t Address, const void *Decoder)

{

  CS_ASSERT(isUIntN(8, Imm) && "Invalid immediate");

  MCOperand_CreateImm0(Inst, (SignExtend64((Imm), 8)));

  return MCDisassembler_Success;

}

static DecodeStatus decodeImm8_sh8Operand(MCInst *Inst, uint64_t Imm,

            int64_t Address, const void *Decoder)

{

  CS_ASSERT(isUIntN(16, Imm) && ((Imm & 0xff) == 0) &&

      "Invalid immediate");

  MCOperand_CreateImm0(Inst, (SignExtend64((Imm), 16)));

  return MCDisassembler_Success;

}

static DecodeStatus decodeImm12Operand(MCInst *Inst, uint64_t Imm,

               int64_t Address, const void *Decoder)

{

  CS_ASSERT(isUIntN(12, Imm) && "Invalid immediate");

  MCOperand_CreateImm0(Inst, (SignExtend64((Imm), 12)));

  return MCDisassembler_Success;

}

static DecodeStatus decodeUimm4Operand(MCInst *Inst, uint64_t Imm,

               int64_t Address, const void *Decoder)

{

  CS_ASSERT(isUIntN(4, Imm) && "Invalid immediate");

  MCOperand_CreateImm0(Inst, (Imm));

  return MCDisassembler_Success;

}

static DecodeStatus decodeUimm5Operand(MCInst *Inst, uint64_t Imm,

               int64_t Address, const void *Decoder)

{

  CS_ASSERT(isUIntN(5, Imm) && "Invalid immediate");

  MCOperand_CreateImm0(Inst, (Imm));

  return MCDisassembler_Success;

}

static DecodeStatus decodeImm1_16Operand(MCInst *Inst, uint64_t Imm,

           int64_t Address, const void *Decoder)

{

  CS_ASSERT(isUIntN(4, Imm) && "Invalid immediate");

  MCOperand_CreateImm0(Inst, (Imm + 1));

  return MCDisassembler_Success;

}

static DecodeStatus decodeImm1n_15Operand(MCInst *Inst, uint64_t Imm,

            int64_t Address, const void *Decoder)

{

  CS_ASSERT(isUIntN(4, Imm) && "Invalid immediate");

  if (!Imm)

    MCOperand_CreateImm0(Inst, (-1));

  else

    MCOperand_CreateImm0(Inst, (Imm));

  return MCDisassembler_Success;

}

static DecodeStatus decodeImm32n_95Operand(MCInst *Inst, uint64_t Imm,

             int64_t Address, const void *Decoder)

{

  CS_ASSERT(isUIntN(7, Imm) && "Invalid immediate");

  if ((Imm & 0x60) == 0x60)

    MCOperand_CreateImm0(Inst, ((~0x1f) | Imm));

  else

    MCOperand_CreateImm0(Inst, (Imm));

  return MCDisassembler_Success;

}

static DecodeStatus decodeImm8n_7Operand(MCInst *Inst, uint64_t Imm,

           int64_t Address, const void *Decoder)

{

  CS_ASSERT(isUIntN(4, Imm) && "Invalid immediate");

  if (Imm > 7)

    MCOperand_CreateImm0(Inst, (Imm - 16));

  else

    MCOperand_CreateImm0(Inst, (Imm));

  return MCDisassembler_Success;

}

static DecodeStatus decodeImm64n_4nOperand(MCInst *Inst, uint64_t Imm,

             int64_t Address, const void *Decoder)

{

  CS_ASSERT(isUIntN(6, Imm) && ((Imm & 0x3) == 0) && "Invalid immediate");

  MCOperand_CreateImm0(Inst, ((~0x3f) | (Imm)));

  return MCDisassembler_Success;

}

static DecodeStatus decodeOffset8m32Operand(MCInst *Inst, uint64_t Imm,

              int64_t Address,

              const void *Decoder)

{

  CS_ASSERT(isUIntN(10, Imm) && ((Imm & 0x3) == 0) &&

      "Invalid immediate");

  MCOperand_CreateImm0(Inst, (Imm));

  return MCDisassembler_Success;

}

static DecodeStatus decodeEntry_Imm12OpValue(MCInst *Inst, uint64_t Imm,

               int64_t Address,

               const void *Decoder)

{

  CS_ASSERT(isUIntN(15, Imm) && ((Imm & 0x7) == 0) &&

      "Invalid immediate");

  MCOperand_CreateImm0(Inst, (Imm));

  return MCDisassembler_Success;

}

static DecodeStatus decodeShimm1_31Operand(MCInst *Inst, uint64_t Imm,

             int64_t Address, const void *Decoder)

{

  CS_ASSERT(isUIntN(5, Imm) && "Invalid immediate");

  MCOperand_CreateImm0(Inst, (32 - Imm));

  return MCDisassembler_Success;

}

//static DecodeStatus decodeShimm0_31Operand(MCInst *Inst, uint64_t Imm,

//             int64_t Address, const void *Decoder)

//{

//  CS_ASSERT(isUIntN(5, Imm) && "Invalid immediate");

//  MCOperand_CreateImm0(Inst, (32 - Imm));

//  return MCDisassembler_Success;

//}

static DecodeStatus decodeImm7_22Operand(MCInst *Inst, uint64_t Imm,

           int64_t Address, const void *Decoder)

{

  CS_ASSERT(isUIntN(4, Imm) && "Invalid immediate");

  MCOperand_CreateImm0(Inst, (Imm + 7));

  return MCDisassembler_Success;

}

static DecodeStatus decodeSelect_2Operand(MCInst *Inst, uint64_t Imm,

            int64_t Address, const void *Decoder)

{

  CS_ASSERT(isUIntN(8, Imm) && "Invalid immediate");

  MCOperand_CreateImm0(Inst, (Imm));

  return MCDisassembler_Success;

}

static DecodeStatus decodeSelect_4Operand(MCInst *Inst, uint64_t Imm,

            int64_t Address, const void *Decoder)

{

  CS_ASSERT(isUIntN(8, Imm) && "Invalid immediate");

  MCOperand_CreateImm0(Inst, (Imm));

  return MCDisassembler_Success;

}

static DecodeStatus decodeSelect_8Operand(MCInst *Inst, uint64_t Imm,

            int64_t Address, const void *Decoder)

{

  CS_ASSERT(isUIntN(8, Imm) && "Invalid immediate");

  MCOperand_CreateImm0(Inst, (Imm));

  return MCDisassembler_Success;

}

static DecodeStatus decodeSelect_16Operand(MCInst *Inst, uint64_t Imm,

             int64_t Address, const void *Decoder)

{

  CS_ASSERT(isUIntN(8, Imm) && "Invalid immediate");

  MCOperand_CreateImm0(Inst, (Imm));

  return MCDisassembler_Success;

}

static DecodeStatus decodeSelect_256Operand(MCInst *Inst, uint64_t Imm,

              int64_t Address,

              const void *Decoder)

{

  CS_ASSERT(isUIntN(8, Imm) && "Invalid immediate");

  MCOperand_CreateImm0(Inst, (Imm));

  return MCDisassembler_Success;

}

static DecodeStatus decodeOffset_16_16Operand(MCInst *Inst, uint64_t Imm,

                int64_t Address,

                const void *Decoder)

{

  CS_ASSERT(isIntN(Imm, 8) && "Invalid immediate");

  if ((Imm & 0xf) != 0)

    MCOperand_CreateImm0(Inst, (Imm << 4));

  else

    MCOperand_CreateImm0(Inst, (Imm));

  return MCDisassembler_Success;

}

static DecodeStatus decodeOffset_256_8Operand(MCInst *Inst, uint64_t Imm,

                int64_t Address,

                const void *Decoder)

{

  CS_ASSERT(isIntN(16, Imm) && "Invalid immediate");

  if ((Imm & 0x7) != 0)

    MCOperand_CreateImm0(Inst, (Imm << 3));

  else

    MCOperand_CreateImm0(Inst, (Imm));

  return MCDisassembler_Success;

}

static DecodeStatus decodeOffset_256_16Operand(MCInst *Inst, uint64_t Imm,

                 int64_t Address,

                 const void *Decoder)

{

  CS_ASSERT(isIntN(16, Imm) && "Invalid immediate");

  if ((Imm & 0xf) != 0)

    MCOperand_CreateImm0(Inst, (Imm << 4));

  else

    MCOperand_CreateImm0(Inst, (Imm));

  return MCDisassembler_Success;

}

static DecodeStatus decodeOffset_256_4Operand(MCInst *Inst, uint64_t Imm,

                int64_t Address,

                const void *Decoder)

{

  CS_ASSERT(isIntN(16, Imm) && "Invalid immediate");

  if ((Imm & 0x2) != 0)

    MCOperand_CreateImm0(Inst, (Imm << 2));

  else

    MCOperand_CreateImm0(Inst, (Imm));

  return MCDisassembler_Success;

}

static DecodeStatus decodeOffset_128_2Operand(MCInst *Inst, uint64_t Imm,

                int64_t Address,

                const void *Decoder)

{

  CS_ASSERT(isUIntN(8, Imm) && "Invalid immediate");

  if ((Imm & 0x1) != 0)

    MCOperand_CreateImm0(Inst, (Imm << 1));

  else

    MCOperand_CreateImm0(Inst, (Imm));

  return MCDisassembler_Success;

}

static DecodeStatus decodeOffset_128_1Operand(MCInst *Inst, uint64_t Imm,

                int64_t Address,

                const void *Decoder)

{

  CS_ASSERT(isUIntN(8, Imm) && "Invalid immediate");

  MCOperand_CreateImm0(Inst, (Imm));

  return MCDisassembler_Success;

}

static DecodeStatus decodeOffset_64_16Operand(MCInst *Inst, uint64_t Imm,

                int64_t Address,

                const void *Decoder)

{

  CS_ASSERT(isIntN(16, Imm) && "Invalid immediate");

  if ((Imm & 0xf) != 0)

    MCOperand_CreateImm0(Inst, (Imm << 4));

  else

    MCOperand_CreateImm0(Inst, (Imm));

  return MCDisassembler_Success;

}

static int64_t TableB4const[16] = { -1, 1,  2,  3,  4,  5,  6,   7,

            8,  10, 12, 16, 32, 64, 128, 256 };

static DecodeStatus decodeB4constOperand(MCInst *Inst, uint64_t Imm,

           int64_t Address, const void *Decoder)

{

  CS_ASSERT(isUIntN(4, Imm) && "Invalid immediate");

  MCOperand_CreateImm0(Inst, (TableB4const[Imm]));

  return MCDisassembler_Success;

}

static int64_t TableB4constu[16] = { 32768, 65536, 2,  3,  4,  5,  6, 7,

             8,     10,    12, 16, 32, 64, 128, 256 };

static DecodeStatus decodeB4constuOperand(MCInst *Inst, uint64_t Imm,

            int64_t Address, const void *Decoder)

{

  CS_ASSERT(isUIntN(4, Imm) && "Invalid immediate");

  MCOperand_CreateImm0(Inst, (TableB4constu[Imm]));

  return MCDisassembler_Success;

}

static DecodeStatus decodeMem8Operand(MCInst *Inst, uint64_t Imm,

              int64_t Address, const void *Decoder)

{

  CS_ASSERT(isUIntN(12, Imm) && "Invalid immediate");

  DecodeARRegisterClass(Inst, Imm & 0xf, Address, Decoder);

  MCOperand_CreateImm0(Inst, ((Imm >> 4) & 0xff));

  return MCDisassembler_Success;

}

static DecodeStatus decodeMem16Operand(MCInst *Inst, uint64_t Imm,

               int64_t Address, const void *Decoder)

{

  CS_ASSERT(isUIntN(12, Imm) && "Invalid immediate");

  DecodeARRegisterClass(Inst, Imm & 0xf, Address, Decoder);

  MCOperand_CreateImm0(Inst, ((Imm >> 3) & 0x1fe));

  return MCDisassembler_Success;

}

static DecodeStatus decodeMem32Operand(MCInst *Inst, uint64_t Imm,

               int64_t Address, const void *Decoder)

{

  CS_ASSERT(isUIntN(12, Imm) && "Invalid immediate");

  DecodeARRegisterClass(Inst, Imm & 0xf, Address, Decoder);

  MCOperand_CreateImm0(Inst, ((Imm >> 2) & 0x3fc));

  return MCDisassembler_Success;

}

static DecodeStatus decodeMem32nOperand(MCInst *Inst, uint64_t Imm,

          int64_t Address, const void *Decoder)

{

  CS_ASSERT(isUIntN(8, Imm) && "Invalid immediate");

  DecodeARRegisterClass(Inst, Imm & 0xf, Address, Decoder);

  MCOperand_CreateImm0(Inst, ((Imm >> 2) & 0x3c));

  return MCDisassembler_Success;

}

/// Read two bytes from the ArrayRef and return 16 bit data sorted

/// according to the given endianness.

static DecodeStatus readInstruction16(MCInst *MI, const uint8_t *Bytes,

              size_t BytesLen, uint64_t Address,

              uint64_t *Size, uint64_t *Insn,

              bool IsLittleEndian)

{

  // We want to read exactly 2 Bytes of data.

  if (BytesLen < 2) {

    *Size = 0;

    return MCDisassembler_Fail;

  }

  *Insn = readBytes16(MI, Bytes);

  *Size = 2;

  return MCDisassembler_Success;

}

/// Read three bytes from the ArrayRef and return 24 bit data

static DecodeStatus readInstruction24(MCInst *MI, const uint8_t *Bytes,

              size_t BytesLen, uint64_t Address,

              uint64_t *Size, uint64_t *Insn,

              bool IsLittleEndian, bool CheckTIE)

{

  // We want to read exactly 3 Bytes of data.

  if (BytesLen < 3) {

    *Size = 0;

    return MCDisassembler_Fail;

  }

  if (CheckTIE && (Bytes[0] & 0x8) != 0)

    return MCDisassembler_Fail;

  *Insn = readBytes24(MI, Bytes);

  *Size = 3;

  return MCDisassembler_Success;

}

/// Read three bytes from the ArrayRef and return 32 bit data

static DecodeStatus readInstruction32(MCInst *MI, const uint8_t *Bytes,

              size_t BytesLen, uint64_t Address,

              uint64_t *Size, uint64_t *Insn,

              bool IsLittleEndian)

{

  // We want to read exactly 4 Bytes of data.

  if (BytesLen < 4) {

    *Size = 0;

    return MCDisassembler_Fail;

  }

  if ((Bytes[0] & 0x8) == 0)

    return MCDisassembler_Fail;

  *Insn = readBytes32(MI, Bytes);

  *Size = 4;

  return MCDisassembler_Success;

}

/// Read InstSize bytes from the ArrayRef and return 24 bit data

static DecodeStatus readInstructionN(const uint8_t *Bytes, size_t BytesLen,

             uint64_t Address, unsigned InstSize,

             uint64_t *Size, uint64_t *Insn,

             bool IsLittleEndian)

{

  // We want to read exactly 3 Bytes of data.

  if (BytesLen < InstSize) {

    *Size = 0;

    return MCDisassembler_Fail;

  }

  *Insn = 0;

  for (unsigned i = 0; i < InstSize; i++)

    *Insn |= (uint64_t)(Bytes[i]) << (8 * i);

  *Size = InstSize;

  return MCDisassembler_Success;

}

#include "XtensaGenDisassemblerTables.inc"

FieldFromInstruction(fieldFromInstruction_2, uint64_t);

DecodeToMCInst(decodeToMCInst_2, fieldFromInstruction_2, uint64_t);

DecodeInstruction(decodeInstruction_2, fieldFromInstruction_2, decodeToMCInst_2,

      uint64_t);

FieldFromInstruction(fieldFromInstruction_4, uint64_t);

DecodeToMCInst(decodeToMCInst_4, fieldFromInstruction_4, uint64_t);

DecodeInstruction(decodeInstruction_4, fieldFromInstruction_4, decodeToMCInst_4,

      uint64_t);

FieldFromInstruction(fieldFromInstruction_6, uint64_t);

DecodeToMCInst(decodeToMCInst_6, fieldFromInstruction_6, uint64_t);

DecodeInstruction(decodeInstruction_6, fieldFromInstruction_6, decodeToMCInst_6,

      uint64_t);

static bool hasDensity()

{

  return true;

}

static bool hasESP32S3Ops()

{

  return true;

}

static bool hasHIFI3()

{

  return true;

}

static DecodeStatus getInstruction(MCInst *MI, uint64_t *Size,

           const uint8_t *Bytes, size_t BytesLen,

           uint64_t Address)

{

  uint64_t Insn;

  DecodeStatus Result;

  bool IsLittleEndian = MI->csh->mode & CS_MODE_LITTLE_ENDIAN;

  // Parse 16-bit instructions

  if (hasDensity()) {

    Result = readInstruction16(MI, Bytes, BytesLen, Address, Size,

             &Insn, IsLittleEndian);

    if (Result == MCDisassembler_Fail)

      return MCDisassembler_Fail;

    Result = decodeInstruction_2(DecoderTable16, MI, Insn, Address,

               NULL);

    if (Result != MCDisassembler_Fail) {

      *Size = 2;

      return Result;

    }

  }

  // Parse Core 24-bit instructions

  Result = readInstruction24(MI, Bytes, BytesLen, Address, Size, &Insn,

           IsLittleEndian, false);

  if (Result == MCDisassembler_Fail)

    return MCDisassembler_Fail;