/src/capstonenext/arch/SH/SHDisassembler.c

Source
/* Capstone Disassembly Engine */
/* By Yoshinori Sato, 2022 */

#include <string.h>
#include <stdarg.h>
#include "../../cs_priv.h"
#include "../../MCInst.h"
#include "../../MCDisassembler.h"
#include "../../utils.h"
#include "SHDisassembler.h"
#include "capstone/sh.h"

#define regs_read(_detail, _reg) \
  if (_detail) \
  _detail->regs_read[_detail->regs_read_count++] = _reg
#define regs_write(_detail, _reg) \
  if (_detail) \
  _detail->regs_write[_detail->regs_write_count++] = _reg

enum direction { read, write };

static void regs_rw(cs_detail *detail, enum direction rw, sh_reg reg)
{
  switch (rw) {
  case read:
    regs_read(detail, reg);
    break;
  case write:
    regs_write(detail, reg);
    break;
  }
}

static void set_reg_n(sh_info *info, sh_reg reg, int pos, enum direction rw,
          cs_detail *detail)
{
  info->op.operands[pos].type = SH_OP_REG;
  info->op.operands[pos].reg = reg;
  regs_rw(detail, rw, reg);
}

static void set_reg(sh_info *info, sh_reg reg, enum direction rw,
        cs_detail *detail)
{
  set_reg_n(info, reg, info->op.op_count, rw, detail);
  info->op.op_count++;
}

static void set_mem_n(sh_info *info, sh_op_mem_type address, sh_reg reg,
          uint32_t disp, int sz, int pos, cs_detail *detail)
{
  info->op.operands[pos].type = SH_OP_MEM;
  info->op.operands[pos].mem.address = address;
  info->op.operands[pos].mem.reg = reg;
  info->op.operands[pos].mem.disp = disp;
  if (sz > 0)
    info->op.size = sz;
  switch (address) {
  case SH_OP_MEM_REG_POST:
  case SH_OP_MEM_REG_PRE:
    regs_write(detail, reg);
    break;
  case SH_OP_MEM_GBR_R0:
    regs_read(detail, SH_REG_GBR);
    regs_read(detail, SH_REG_R0);
    break;
  case SH_OP_MEM_REG_R0:
    regs_read(detail, SH_REG_R0);
    regs_read(detail, reg);
    break;
  case SH_OP_MEM_PCR:
    break;
  default:
    regs_read(detail, reg);
    break;
  }
}

static void set_mem(sh_info *info, sh_op_mem_type address, sh_reg reg,
        uint32_t disp, int sz, cs_detail *detail)
{
  set_mem_n(info, address, reg, disp, sz, info->op.op_count, detail);
  info->op.op_count++;
}

static void set_imm(sh_info *info, int sign, uint64_t imm)
{
  info->op.operands[info->op.op_count].type = SH_OP_IMM;
  if (sign && imm >= 128)
    imm = -256 + imm;
  info->op.operands[info->op.op_count].imm = imm;
  info->op.op_count++;
}

static void set_groups(cs_detail *detail, int n, ...)
{
  va_list g;
  va_start(g, n);
  while (n > 0) {
    sh_insn_group grp;
    // NOLINTBEGIN(clang-analyzer-valist.Uninitialized)
    grp = va_arg(g, sh_insn_group);
    // NOLINTEND(clang-analyzer-valist.Uninitialized)
    if (detail) {
      detail->groups[detail->groups_count] = grp;
      detail->groups_count++;
    }
    n--;
  }
  va_end(g);
}

enum {
  ISA_ALL = 1,
  ISA_SH2 = 2,
  ISA_SH2A = 3,
  ISA_SH3 = 4,
  ISA_SH4 = 5,
  ISA_SH4A = 6,
  ISA_MAX = 7,
};

static int isalevel(cs_mode mode)
{
  int level;
  mode >>= 1; /* skip endian */
  for (level = 2; level < ISA_MAX; level++) {
    if (mode & 1)
      return level;
    mode >>= 1;
  }
  return ISA_ALL;
}

enum co_processor { none, shfpu, shdsp };
typedef union reg_insn {
  sh_reg reg;
  sh_insn insn;
} reg_insn;
struct ri_list {
  int no;
  int /* reg_insn */ ri;
  int level;
  enum co_processor cp;
};

static const struct ri_list ldc_stc_regs[] = {
  { 0, SH_REG_SR, ISA_ALL, none },
  { 1, SH_REG_GBR, ISA_ALL, none },
  { 2, SH_REG_VBR, ISA_ALL, none },
  { 3, SH_REG_SSR, ISA_SH3, none },
  { 4, SH_REG_SPC, ISA_SH3, none },
  { 5, SH_REG_MOD, ISA_ALL, shdsp },
  { 6, SH_REG_RS, ISA_ALL, shdsp },
  { 7, SH_REG_RE, ISA_ALL, shdsp },
  { 8, SH_REG_R0_BANK, ISA_SH3, none },
  { 9, SH_REG_R1_BANK, ISA_SH3, none },
  { 10, SH_REG_R2_BANK, ISA_SH3, none },
  { 11, SH_REG_R3_BANK, ISA_SH3, none },
  { 12, SH_REG_R4_BANK, ISA_SH3, none },
  { 13, SH_REG_R5_BANK, ISA_SH3, none },
  { 14, SH_REG_R6_BANK, ISA_SH3, none },
  { 15, SH_REG_R7_BANK, ISA_SH3, none },
  { -1, SH_REG_INVALID, ISA_ALL, none },
};

static sh_insn lookup_insn(const struct ri_list *list, int no, cs_mode mode)
{
  int level = isalevel(mode);
  sh_insn error = SH_INS_INVALID;
  for (; list->no >= 0; list++) {
    if (no != list->no)
      continue;
    if (((level >= 0) && (level < list->level)) ||
        ((level < 0) && (-(level) != list->level)))
      continue;
    if ((list->cp == none) ||
        ((list->cp == shfpu) && (mode & CS_MODE_SHFPU)) ||
        ((list->cp == shdsp) && (mode & CS_MODE_SHDSP))) {
      return list->ri;
    }
  }
  return error;
}

static sh_reg lookup_regs(const struct ri_list *list, int no, cs_mode mode)
{
  int level = isalevel(mode);
  sh_reg error = SH_REG_INVALID;
  for (; list->no >= 0; list++) {
    if (no != list->no)
      continue;
    if (((level >= 0) && (level < list->level)) ||
        ((level < 0) && (-(level) != list->level)))
      continue;
    if ((list->cp == none) ||
        ((list->cp == shfpu) && (mode & CS_MODE_SHFPU)) ||
        ((list->cp == shdsp) && (mode & CS_MODE_SHDSP))) {
      return list->ri;
    }
  }
  return error;
}

// #define lookup_regs(list, no, mode) ((reg_insn)(lookup(reg, list, no, mode).reg))
// #define lookup_insn(list, no, mode) ((sh_insn)(lookup(insn, list, no, mode).insn))

static sh_reg opSTCsrc(uint16_t code, MCInst *MI, cs_mode mode, sh_info *info,
           cs_detail *detail)
{
  int s = (code >> 4) & 0x0f;
  int d = (code >> 8) & 0x0f;
  sh_reg sreg;
  MCInst_setOpcode(MI, SH_INS_STC);
  sreg = lookup_regs(ldc_stc_regs, s, mode);
  if (sreg != SH_REG_INVALID) {
    set_reg(info, sreg, read, detail);
    return SH_REG_R0 + d;
  } else {
    return SH_REG_INVALID;
  }
}

static bool opSTC(uint16_t code, uint64_t address, MCInst *MI, cs_mode mode,
      sh_info *info, cs_detail *detail)
{
  sh_reg d;
  d = opSTCsrc(code, MI, mode, info, detail);
  if (d != SH_REG_INVALID) {
    set_reg(info, d, write, detail);
    return MCDisassembler_Success;
  } else {
    return MCDisassembler_Fail;
  }
}

static bool op0xx3(uint16_t code, uint64_t address, MCInst *MI, cs_mode mode,
       sh_info *info, cs_detail *detail)
{
  int r = (code >> 8) & 0x0f;
  int insn_code = (code >> 4) & 0x0f;
  static const struct ri_list list[] = {
    { 0, SH_INS_BSRF, ISA_SH2, none },
    { 2, SH_INS_BRAF, ISA_SH2, none },
    { 6, SH_INS_MOVLI, ISA_SH4A, none },
    { 7, SH_INS_MOVCO, ISA_SH4A, none },
    { 8, SH_INS_PREF, ISA_SH2A, none },
    { 9, SH_INS_OCBI, ISA_SH4, none },
    { 10, SH_INS_OCBP, ISA_SH4, none },
    { 11, SH_INS_OCBWB, ISA_SH4, none },
    { 12, SH_INS_MOVCA, ISA_SH4, none },
    { 13, SH_INS_PREFI, ISA_SH4A, none },
    { 14, SH_INS_ICBI, ISA_SH4A, none },
    { -1, SH_INS_INVALID, ISA_ALL, none },
  };
  sh_insn insn = lookup_insn(list, insn_code, mode);

  if (insn != SH_INS_INVALID) {
    MCInst_setOpcode(MI, insn);
    switch (insn_code) {
    case 0: /// bsrf Rn
    case 2: /// braf Rn
      set_reg(info, SH_REG_R0 + r, read, detail);
      if (detail)
        set_groups(detail, 2, SH_GRP_JUMP,
             SH_GRP_BRANCH_RELATIVE);
      break;
    case 8: /// pref @Rn
    case 9: /// ocbi @Rn
    case 10: /// ocbp @Rn
    case 11: /// ocbwb @Rn
    case 13: /// prefi @Rn
    case 14: /// icbi @Rn
      set_mem(info, SH_OP_MEM_REG_IND, SH_REG_R0 + r, 0, 0,
        detail);
      break;
    case 6: /// movli @Rn, R0
      set_mem(info, SH_OP_MEM_REG_IND, SH_REG_R0 + r, 0, 32,
        detail);
      set_reg(info, SH_REG_R0, write, detail);
      break;
    case 7: /// movco R0,@Rn
    case 12: /// movca R0,@Rn
      set_reg(info, SH_REG_R0, read, detail);
      set_mem(info, SH_OP_MEM_REG_IND, SH_REG_R0 + r, 0, 32,
        detail);
      break;
    }
    return MCDisassembler_Success;
  } else {
    return MCDisassembler_Fail;
  }
}

#define nm(code, dir) \
  int m, n; \
  m = (code >> (4 * (dir + 1))) & 0x0f; \
  n = (code >> (8 - 4 * dir)) & 0x0f

static bool opMOVx(uint16_t code, uint64_t address, MCInst *MI, cs_mode mode,
       int size, sh_info *info, cs_detail *detail)
{
  int ad = ((code >> 10) & 0x3c) | ((code >> 2) & 0x03);
  enum direction rw;
  MCInst_setOpcode(MI, SH_INS_MOV);
  switch (ad) {
  case 0x01: /// mov.X Rs,@(R0, Rd)
  case 0x03: /// mov.X @(R0, Rs), Rd
    rw = (ad >> 1);
    {
      nm(code, rw);
      set_reg_n(info, SH_REG_R0 + m, rw, rw, detail);
      set_mem_n(info, SH_OP_MEM_REG_R0, SH_REG_R0 + n, 0,
          size, 1 - rw, detail);
      info->op.op_count = 2;
    }
    break;
  case 0x20: /// mov.X Rs,@-Rd
  case 0x60: /// mov.X @Rs+,Rd
    rw = (ad >> 6) & 1;
    {
      nm(code, rw);
      set_reg_n(info, SH_REG_R0 + m, rw, rw, detail);
      set_mem_n(info, SH_OP_MEM_REG_PRE, SH_REG_R0 + n, 0,
          size, 1 - rw, detail);
    }
    break;
  default:
    return MCDisassembler_Fail;
  }
  return MCDisassembler_Success;
}

static bool opMOV_B(uint16_t code, uint64_t address, MCInst *MI, cs_mode mode,
        sh_info *info, cs_detail *detail)
{
  return opMOVx(code, address, MI, mode, 8, info, detail);
}

static bool opMOV_W(uint16_t code, uint64_t address, MCInst *MI, cs_mode mode,
        sh_info *info, cs_detail *detail)
{
  return opMOVx(code, address, MI, mode, 16, info, detail);
}

static bool opMOV_L(uint16_t code, uint64_t address, MCInst *MI, cs_mode mode,
        sh_info *info, cs_detail *detail)
{
  return opMOVx(code, address, MI, mode, 32, info, detail);
}

static bool opRRfn(uint16_t code, MCInst *MI, sh_insn insn, cs_mode mode,
       int size, int level, sh_info *info, cs_detail *detail)
{
  int m = (code >> 4) & 0x0f;
  int n = (code >> 8) & 0x0f;
  if (level > isalevel(mode))
    return MCDisassembler_Fail;
  MCInst_setOpcode(MI, insn);
  set_reg(info, SH_REG_R0 + m, read, detail);
  set_reg(info, SH_REG_R0 + n, write, detail);
  info->op.size = size;
  return MCDisassembler_Success;
}

#define opRR(level, __insn, __size) \
  static bool op##__insn(uint16_t code, uint64_t address, MCInst *MI, \
             cs_mode mode, sh_info *info, cs_detail *detail) \
  { \
    return opRRfn(code, MI, SH_INS_##__insn, mode, __size, level, \
            info, detail); \
  }

/* mul.l - SH2 */
opRR(ISA_SH2, MUL_L, 0)

  static bool op0xx8(uint16_t code, uint64_t address, MCInst *MI,
         cs_mode mode, sh_info *info, cs_detail *detail)
{
  int insn_code = (code >> 4) & 0xf;
  static const struct ri_list list[] = {
    { 0, SH_INS_CLRT, ISA_ALL, none },
    { 1, SH_INS_SETT, ISA_ALL, none },
    { 2, SH_INS_CLRMAC, ISA_ALL, none },
    { 3, SH_INS_LDTLB, ISA_SH3, none },
    { 4, SH_INS_CLRS, ISA_SH3, none },
    { 5, SH_INS_SETS, ISA_SH3, none },
    { 6, SH_INS_NOTT, -(ISA_SH2A), none },
    { 8, SH_INS_CLRDMXY, ISA_SH4A, shdsp },
    { 9, SH_INS_SETDMX, ISA_SH4A, shdsp },
    { 12, SH_INS_SETDMY, ISA_SH4A, shdsp },
    { -1, SH_INS_INVALID, ISA_ALL, none },
  };

  sh_insn insn = lookup_insn(list, insn_code, mode);
  if (code & 0x0f00)
    return MCDisassembler_Fail;

  if (insn != SH_INS_INVALID) {
    MCInst_setOpcode(MI, insn);
    return MCDisassembler_Success;
  } else {
    return MCDisassembler_Fail;
  }
}

static bool op0xx9(uint16_t code, uint64_t address, MCInst *MI, cs_mode mode,
       sh_info *info, cs_detail *detail)
{
  int insn_code = (code >> 4) & 0x0f;
  int r = (code >> 8) & 0x0f;
  static const struct ri_list list[] = {
    { 0, SH_INS_NOP, ISA_ALL, none },
    { 1, SH_INS_DIV0U, ISA_ALL, none },
    { 2, SH_INS_MOVT, ISA_ALL, none },
    { 3, SH_INS_MOVRT, -(ISA_SH2A), none },
    { -1, SH_INS_INVALID, ISA_ALL, none },
  };
  sh_insn insn = lookup_insn(list, insn_code, mode);
  if (insn != SH_INS_INVALID) {
    if (insn_code >= 2) {
      /// movt / movrt Rn
      set_reg(info, SH_REG_R0 + r, write, detail);
    } else if (r > 0) {
      insn = SH_INS_INVALID;
    }
  }
  if (insn != SH_INS_INVALID) {
    MCInst_setOpcode(MI, insn);
    return MCDisassembler_Success;
  } else {
    return MCDisassembler_Fail;
  }
}

static const struct ri_list sts_lds_regs[] = {
  { 0, SH_REG_MACH, ISA_ALL, none },
  { 1, SH_REG_MACL, ISA_ALL, none },
  { 2, SH_REG_PR, ISA_ALL, none },
  { 3, SH_REG_SGR, ISA_SH4, none },
  { 4, SH_REG_TBR, -(ISA_SH2A), none },
  { 5, SH_REG_FPUL, ISA_ALL, shfpu },
  { 6, SH_REG_FPSCR, ISA_ALL, shfpu },
  { 6, SH_REG_DSP_DSR, ISA_ALL, shdsp },
  { 7, SH_REG_DSP_A0, ISA_ALL, shdsp },
  { 8, SH_REG_DSP_X0, ISA_ALL, shdsp },
  { 9, SH_REG_DSP_X1, ISA_ALL, shdsp },
  { 10, SH_REG_DSP_Y0, ISA_ALL, shdsp },
  { 11, SH_REG_DSP_Y1, ISA_ALL, shdsp },
  { 15, SH_REG_DBR, ISA_SH4, none },
  { -1, SH_REG_INVALID, ISA_ALL, none },
};

static sh_reg opSTCSTS(uint16_t code, MCInst *MI, cs_mode mode, sh_info *info,
           cs_detail *detail)
{
  int s = (code >> 4) & 0x0f;
  int d = (code >> 8) & 0x0f;
  sh_reg reg;
  sh_insn insn;

  reg = lookup_regs(sts_lds_regs, s, mode);
  if (reg != SH_REG_INVALID) {
    if (s == 3 || s == 4 || s == 15) {
      insn = SH_INS_STC;
    } else {
      insn = SH_INS_STS;
    }
    MCInst_setOpcode(MI, insn);
    set_reg(info, reg, read, detail);
    return SH_REG_R0 + d;
  } else {
    return SH_REG_INVALID;
  }
}

static bool op0xxa(uint16_t code, uint64_t address, MCInst *MI, cs_mode mode,
       sh_info *info, cs_detail *detail)
{
  sh_reg r = opSTCSTS(code, MI, mode, info, detail);
  if (r != SH_REG_INVALID) {
    set_reg(info, r, write, detail);
    return MCDisassembler_Success;
  } else
    return MCDisassembler_Fail;
}

static bool op0xxb(uint16_t code, uint64_t address, MCInst *MI, cs_mode mode,
       sh_info *info, cs_detail *detail)
{
  int insn_code = (code >> 4) & 0x0f;
  int r = (code >> 8) & 0x0f;
  static const struct ri_list list[] = {
    { 0, SH_INS_RTS, ISA_ALL, none },
    { 1, SH_INS_SLEEP, ISA_ALL, none },
    { 2, SH_INS_RTE, ISA_ALL, none },
    { 5, SH_INS_RESBANK, -(ISA_SH2A), none },
    { 6, SH_INS_RTS_N, -(ISA_SH2A), none },
    { 7, SH_INS_RTV_N, -(ISA_SH2A), none },
    { 10, SH_INS_SYNCO, -(ISA_SH4A), none },
    { -1, SH_INS_INVALID, ISA_ALL, none },
  };

  sh_insn insn = lookup_insn(list, insn_code, mode);
  if (insn_code == 7) {
    set_reg(info, SH_REG_R0 + r, read, detail);
    regs_write(detail, SH_REG_R0);
  } else if (r > 0) {
    insn = SH_INS_INVALID;
  }
  if (insn != SH_INS_INVALID) {
    MCInst_setOpcode(MI, insn);
    return MCDisassembler_Success;
  } else {
    return MCDisassembler_Fail;
  }
}

static bool opMAC(uint16_t code, sh_insn op, MCInst *MI, sh_info *info,
      cs_detail *detail)
{
  nm(code, 0);
  MCInst_setOpcode(MI, op);
  set_mem(info, SH_OP_MEM_REG_POST, SH_REG_R0 + m, 0, 0, detail);
  set_mem(info, SH_OP_MEM_REG_POST, SH_REG_R0 + n, 0, 0, detail);
  return MCDisassembler_Success;
}

/// mac.l - sh2+
static bool opMAC_L(uint16_t code, uint64_t address, MCInst *MI, cs_mode mode,
        sh_info *info, cs_detail *detail)
{
  if (isalevel(mode) < ISA_SH2)
    return MCDisassembler_Fail;
  return opMAC(code, SH_INS_MAC_L, MI, info, detail);
}

static bool opMAC_W(uint16_t code, uint64_t address, MCInst *MI, cs_mode mode,
        sh_info *info, cs_detail *detail)
{
  return opMAC(code, SH_INS_MAC_W, MI, info, detail);
}

static bool opMOV_L_dsp(uint16_t code, uint64_t address, MCInst *MI,
      cs_mode mode, sh_info *info, cs_detail *detail)
{
  int dsp = (code & 0x0f) * 4;
  int rw = (code >> 14) & 1;
  nm(code, rw);
  MCInst_setOpcode(MI, SH_INS_MOV);
  set_mem_n(info, SH_OP_MEM_REG_DISP, SH_REG_R0 + n, dsp, 32, 1 - rw,
      detail);
  set_reg_n(info, SH_REG_R0 + m, rw, rw, detail);
  info->op.op_count = 2;
  return MCDisassembler_Success;
}

static bool opMOV_rind(uint16_t code, uint64_t address, MCInst *MI,
           cs_mode mode, sh_info *info, cs_detail *detail)
{
  int sz = (code & 0x03);
  int rw = (code >> 14) & 1;
  nm(code, rw);
  MCInst_setOpcode(MI, SH_INS_MOV);
  sz = 8 << sz;
  set_mem_n(info, SH_OP_MEM_REG_IND, SH_REG_R0 + n, 0, sz, 1 - rw,
      detail);
  set_reg_n(info, SH_REG_R0 + m, rw, rw, detail);
  info->op.op_count = 2;
  return MCDisassembler_Success;
}

static bool opMOV_rpd(uint16_t code, uint64_t address, MCInst *MI, cs_mode mode,
          sh_info *info, cs_detail *detail)
{
  nm(code, 0);
  int sz = (code & 0x03);
  MCInst_setOpcode(MI, SH_INS_MOV);
  set_reg(info, SH_REG_R0 + m, read, detail);
  set_mem(info, SH_OP_MEM_REG_PRE, SH_REG_R0 + n, 0, 8 << sz, detail);
  return MCDisassembler_Success;
}

opRR(ISA_ALL, TST, 0) opRR(ISA_ALL, AND, 0) opRR(ISA_ALL, XOR, 0) opRR(
  ISA_ALL, OR, 0) opRR(ISA_ALL, CMP_STR, 0) opRR(ISA_ALL, XTRCT, 0)
  opRR(ISA_ALL, MULU_W, 16) opRR(ISA_ALL, MULS_W, 16) opRR(ISA_ALL,
                 CMP_EQ, 0)
    opRR(ISA_ALL, CMP_HI, 0) opRR(ISA_ALL, CMP_HS,
                0) opRR(ISA_ALL, CMP_GE, 0)
      opRR(ISA_ALL, CMP_GT, 0) opRR(ISA_ALL, SUB,
                  0) opRR(ISA_ALL, SUBC, 0)
        opRR(ISA_ALL, SUBV, 0) opRR(ISA_ALL, ADD_r, 0)
          opRR(ISA_ALL, ADDC, 0) opRR(ISA_ALL,
                    ADDV, 0)
            opRR(ISA_ALL, DIV0S, 0)
              opRR(ISA_ALL, DIV1, 0)
  /// DMULS / DMULU - SH2
  opRR(ISA_SH2, DMULS_L, 0) opRR(ISA_SH2, DMULU_L, 0)

    static bool op4xx0(uint16_t code, uint64_t address, MCInst *MI,
           cs_mode mode, sh_info *info,
           cs_detail *detail)
{
  int insn_code = (code >> 4) & 0x0f;
  int r = (code >> 8) & 0x0f;
  static const struct ri_list list[] = {
    { 0, SH_INS_SHLL, ISA_ALL, none },
    { 1, SH_INS_DT, ISA_SH2, none },
    { 2, SH_INS_SHAL, ISA_ALL, none },
    { 8, SH_INS_MULR, -(ISA_SH2A), none },
    { 15, SH_INS_MOVMU, -(ISA_SH2A), none },
    { -1, SH_INS_INVALID, ISA_ALL, none },
  };
  sh_insn insn = lookup_insn(list, insn_code, mode);
  if (insn != SH_INS_INVALID) {
    MCInst_setOpcode(MI, insn);
    if (insn_code < 8) {
      set_reg(info, SH_REG_R0 + r, write, detail);
    } else {
      switch (insn_code) {
      case 0x08:
        set_reg(info, SH_REG_R0, read, detail);
        set_reg(info, SH_REG_R0 + r, write, detail);
        break;
      case 0x0f:
        set_reg(info, SH_REG_R0 + r, read, detail);
        set_mem(info, SH_OP_MEM_REG_PRE, SH_REG_R15, 0,
          32, detail);
        break;
      }
    }
    return MCDisassembler_Success;
  } else {
    return MCDisassembler_Fail;
  }
}

static bool op4xx1(uint16_t code, uint64_t address, MCInst *MI, cs_mode mode,
       sh_info *info, cs_detail *detail)
{
  int insn_code = (code >> 4) & 0x0f;
  int r = (code >> 8) & 0x0f;
  static const struct ri_list list[] = {
    { 0, SH_INS_SHLR, ISA_ALL, none },
    { 1, SH_INS_CMP_PZ, ISA_ALL, none },
    { 2, SH_INS_SHAR, ISA_ALL, none },
    { 8, SH_INS_CLIPU, -(ISA_SH2A), none },
    { 9, SH_INS_CLIPS, -(ISA_SH2A), none },
    { 14, SH_INS_STBANK, -(ISA_SH2A), none },
    { 15, SH_INS_MOVML, -(ISA_SH2A), none },
    { -1, SH_INS_INVALID, ISA_ALL, none },
  };
  sh_insn insn = lookup_insn(list, insn_code, mode);
  if (insn != SH_INS_INVALID) {
    MCInst_setOpcode(MI, insn);
    switch (insn_code) {
    case 14:
      set_reg(info, SH_REG_R0, read, detail);
      set_mem(info, SH_OP_MEM_REG_IND, SH_REG_R0 + r, 0, 0,
        detail);
      break;
    case 15:
      set_reg(info, SH_REG_R0 + r, read, detail);
      set_mem(info, SH_OP_MEM_REG_PRE, SH_REG_R15, 0, 32,
        detail);
      break;
    default:
      set_reg(info, SH_REG_R0 + r, write, detail);
      if (insn_code >= 8)
        info->op.size = 8;
      break;
    }
    return MCDisassembler_Success;
  } else {
    return MCDisassembler_Fail;
  }
}

static bool op4xx2(uint16_t code, uint64_t address, MCInst *MI, cs_mode mode,
       sh_info *info, cs_detail *detail)
{
  sh_reg r = opSTCSTS(code, MI, mode, info, detail);
  if (r != SH_REG_INVALID) {
    set_mem(info, SH_OP_MEM_REG_PRE, r, 0, 32, detail);
    return MCDisassembler_Success;
  } else {
    return MCDisassembler_Fail;
  }
}

static bool opSTC_L(uint16_t code, uint64_t address, MCInst *MI, cs_mode mode,
        sh_info *info, cs_detail *detail)
{
  sh_reg r = opSTCsrc(code, MI, mode, info, detail);
  if (r != SH_REG_INVALID) {
    set_mem(info, SH_OP_MEM_REG_PRE, r, 0, 32, detail);
    return MCDisassembler_Success;
  } else {
    return MCDisassembler_Fail;
  }
}

static bool op4xx4(uint16_t code, uint64_t address, MCInst *MI, cs_mode mode,
       sh_info *info, cs_detail *detail)
{
  int r = (code >> 8) & 0x0f;
  int insn_code = (code >> 4) & 0x0f;
  static const struct ri_list list[] = {
    { 0, SH_INS_ROTL, ISA_ALL, none },
    { 1, SH_INS_SETRC, ISA_ALL, shdsp },
    { 2, SH_INS_ROTCL, ISA_ALL, none },
    { 3, SH_INS_LDRC, ISA_ALL, shdsp },
    { 8, SH_INS_DIVU, -(ISA_SH2A), none },
    { 9, SH_INS_DIVS, -(ISA_SH2A), none },
    { 15, SH_INS_MOVMU, -(ISA_SH2A), none },
    { -1, SH_INS_INVALID, ISA_ALL, none },
  };
  sh_insn insn = lookup_insn(list, insn_code, mode);
  if (insn != SH_INS_INVALID) {
    MCInst_setOpcode(MI, insn);
    switch (insn_code) {
    case 8:
    case 9:
      set_reg(info, SH_REG_R0, read, detail);
      break;
    case 15:
      set_mem(info, SH_OP_MEM_REG_POST, SH_REG_R15, 0, 32,
        detail);
      set_reg(info, SH_REG_R0 + r, read, detail);
      return MCDisassembler_Success;
    }
    set_reg(info, SH_REG_R0 + r, write, detail);
    return MCDisassembler_Success;
  } else {
    return MCDisassembler_Fail;
  }
}

static bool op4xx5(uint16_t code, uint64_t address, MCInst *MI, cs_mode mode,
       sh_info *info, cs_detail *detail)
{
  int r = (code >> 8) & 0x0f;
  enum direction rw = read;
  static const struct ri_list list[] = {
    { 0, SH_INS_ROTR, ISA_ALL, none },
    { 1, SH_INS_CMP_PL, ISA_ALL, none },
    { 2, SH_INS_ROTCR, ISA_ALL, none },
    { 8, SH_INS_CLIPU, -(ISA_SH2A), none },
    { 9, SH_INS_CLIPS, -(ISA_SH2A), none },
    { 14, SH_INS_LDBANK, -(ISA_SH2A), none },
    { 15, SH_INS_MOVML, -(ISA_SH2A), none },
    { -1, SH_INS_INVALID, ISA_ALL, none },
  };
  int insn_code = (code >> 4) & 0x0f;
  sh_insn insn = lookup_insn(list, insn_code, mode);
  if (insn != SH_INS_INVALID) {
    MCInst_setOpcode(MI, insn);
    switch (insn_code) {
    case 0:
    case 2:
      rw = write;
      break;
    case 1:
      rw = read;
      break;
    case 8:
    case 9:
      info->op.size = 16;
      rw = write;
      break;
    case 0x0e:
      set_mem(info, SH_OP_MEM_REG_IND, SH_REG_R0 + r, 0, 0,
        detail);
      set_reg(info, SH_REG_R0, write, detail);
      return MCDisassembler_Success;
    case 0x0f:
      set_mem(info, SH_OP_MEM_REG_POST, SH_REG_R15, 0, 32,
        detail);
      set_reg(info, SH_REG_R0 + r, write, detail);
      return MCDisassembler_Success;
    }
    set_reg(info, SH_REG_R0 + r, rw, detail);
    return MCDisassembler_Success;
  } else {
    return MCDisassembler_Fail;
  }
}

static bool opLDCLDS(uint16_t code, MCInst *MI, cs_mode mode, sh_info *info,
         cs_detail *detail)
{
  int d = (code >> 4) & 0x0f;
  sh_reg reg = lookup_regs(sts_lds_regs, d, mode);
  sh_insn insn;
  if (reg != SH_REG_INVALID) {
    if (d == 3 || d == 4 || d == 15) {
      insn = SH_INS_LDC;
    } else {
      insn = SH_INS_LDS;
    }
    MCInst_setOpcode(MI, insn);
    set_reg(info, reg, write, detail);
    return MCDisassembler_Success;
  } else {
    return MCDisassembler_Fail;
  }
}

static bool op4xx6(uint16_t code, uint64_t address, MCInst *MI, cs_mode mode,
       sh_info *info, cs_detail *detail)
{
  int r = (code >> 8) & 0x0f;
  set_mem(info, SH_OP_MEM_REG_POST, SH_REG_R0 + r, 0, 32, detail);
  return opLDCLDS(code, MI, mode, info, detail);
}

static bool opLDCdst(uint16_t code, MCInst *MI, cs_mode mode, sh_info *info,
         cs_detail *detail)
{
  int d = (code >> 4) & 0x0f;
  sh_reg dreg = lookup_regs(ldc_stc_regs, d, mode);
  if (dreg == SH_REG_INVALID)
    return MCDisassembler_Fail;
  MCInst_setOpcode(MI, SH_INS_LDC);
  set_reg(info, dreg, write, detail);
  return MCDisassembler_Success;
}

static bool opLDC_L(uint16_t code, uint64_t address, MCInst *MI, cs_mode mode,
        sh_info *info, cs_detail *detail)
{
  int s = (code >> 8) & 0x0f;
  set_mem(info, SH_OP_MEM_REG_POST, SH_REG_R0 + s, 0, 32, detail);
  return opLDCdst(code, MI, mode, info, detail);
}

static bool op4xx8(uint16_t code, uint64_t address, MCInst *MI, cs_mode mode,
       sh_info *info, cs_detail *detail)
{
  int r = (code >> 8) & 0x0f;
  sh_insn insn[] = { SH_INS_SHLL2, SH_INS_SHLL8, SH_INS_SHLL16 };
  int size = (code >> 4) & 0x0f;
  if (size >= ARR_SIZE(insn)) {
    return MCDisassembler_Fail;
  }
  MCInst_setOpcode(MI, insn[size]);
  set_reg(info, SH_REG_R0 + r, write, detail);
  return MCDisassembler_Success;
}

static bool op4xx9(uint16_t code, uint64_t address, MCInst *MI, cs_mode mode,
       sh_info *info, cs_detail *detail)
{
  int r = (code >> 8) & 0x0f;
  static const struct ri_list list[] = {
    { 0, SH_INS_SHLR2, ISA_ALL, none },
    { 1, SH_INS_SHLR8, ISA_ALL, none },
    { 2, SH_INS_SHLR16, ISA_ALL, none },
    { 10, SH_INS_MOVUA, -(ISA_SH4A), none },
    { 14, SH_INS_MOVUA, -(ISA_SH4A), none },
    { -1, SH_INS_INVALID, ISA_ALL, none },
  };
  int op = (code >> 4) & 0x0f;
  sh_insn insn = lookup_insn(list, op, mode);
  sh_op_mem_type memop = SH_OP_MEM_INVALID;
  if (insn != SH_INS_INVALID) {
    MCInst_setOpcode(MI, insn);
    if (op < 8) {
      set_reg(info, SH_REG_R0 + r, write, detail);
    } else {
      memop = (op & 4) ? SH_OP_MEM_REG_POST :
             SH_OP_MEM_REG_IND;
      set_mem(info, memop, SH_REG_R0 + r, 0, 32, detail);
      set_reg(info, SH_REG_R0, write, detail);
    }
    return MCDisassembler_Success;
  } else {
    return MCDisassembler_Fail;
  }
}

static bool op4xxa(uint16_t code, uint64_t address, MCInst *MI, cs_mode mode,
       sh_info *info, cs_detail *detail)
{
  int r = (code >> 8) & 0x0f;
  set_reg(info, SH_REG_R0 + r, read, detail);
  return opLDCLDS(code, MI, mode, info, detail);
}

static bool op4xxb(uint16_t code, uint64_t address, MCInst *MI, cs_mode mode,
       sh_info *info, cs_detail *detail)
{
  int r = (code >> 8) & 0x0f;
  int insn_code = (code >> 4) & 0x0f;
  int sz = 0;
  int grp = SH_GRP_INVALID;
  sh_op_mem_type memop = SH_OP_MEM_INVALID;
  enum direction rw = read;
  static const struct ri_list list[] = {
    { 0, SH_INS_JSR, ISA_ALL, none },
    { 1, SH_INS_TAS, ISA_ALL, none },
    { 2, SH_INS_JMP, ISA_ALL, none },
    { 4, SH_INS_JSR_N, -(ISA_SH2A), none },
    { 8, SH_INS_MOV, -(ISA_SH2A), none },
    { 9, SH_INS_MOV, -(ISA_SH2A), none },
    { 10, SH_INS_MOV, -(ISA_SH2A), none },
    { 12, SH_INS_MOV, -(ISA_SH2A), none },
    { 13, SH_INS_MOV, -(ISA_SH2A), none },
    { 14, SH_INS_MOV, -(ISA_SH2A), none },
    { -1, SH_INS_INVALID, ISA_ALL, none },
  };
  sh_insn insn = lookup_insn(list, insn_code, mode);
  if (insn != SH_INS_INVALID) {
    MCInst_setOpcode(MI, insn);
    sz = 8 << ((code >> 4) & 3);
    switch (insn_code) {
    case 0:
    case 4:
      memop = SH_OP_MEM_REG_IND;
      grp = SH_GRP_CALL;
      break;
    case 1:
      memop = SH_OP_MEM_REG_IND;
      sz = 8;
      rw = write;
      break;
    case 2:
      MCInst_setOpcode(MI, SH_INS_JMP);
      grp = SH_GRP_JUMP;
      break;
    case 8:
    case 9:
    case 10:
      memop = SH_OP_MEM_REG_POST;
      rw = read;
      break;
    case 12:
    case 13:
    case 14:
      memop = SH_OP_MEM_REG_PRE;
      rw = write;
      break;
    }
    if (grp != SH_GRP_INVALID) {
      set_mem(info, SH_OP_MEM_REG_IND, SH_REG_R0 + r, 0, 0,
        detail);
      if (detail)
        set_groups(detail, 1, grp);
    } else {
      if (insn_code != 1) {
        set_reg_n(info, SH_REG_R0, rw, rw, detail);
        info->op.op_count++;
      }
      set_mem_n(info, memop, SH_REG_R0 + r, 0, sz, 1 - rw,
          detail);
      info->op.op_count++;
    }
    return MCDisassembler_Success;
  } else {
    return MCDisassembler_Fail;
  }
}

/* SHAD / SHLD - SH2A */
opRR(ISA_SH2A, SHAD, 0) opRR(ISA_SH2A, SHLD, 0)

  static bool opLDC(uint16_t code, uint64_t address, MCInst *MI,
        cs_mode mode, sh_info *info, cs_detail *detail)
{
  int s = (code >> 8) & 0x0f;
  set_reg(info, SH_REG_R0 + s, read, detail);
  return opLDCdst(code, MI, mode, info, detail);
}

opRR(ISA_ALL, MOV, 0)

  static bool opMOV_rpi(uint16_t code, uint64_t address, MCInst *MI,
            cs_mode mode, sh_info *info, cs_detail *detail)
{
  int sz = (code & 0x03);
  nm(code, 0);
  MCInst_setOpcode(MI, SH_INS_MOV);
  set_mem(info, SH_OP_MEM_REG_POST, SH_REG_R0 + m, 0, 8 << sz, detail);
  set_reg(info, SH_REG_R0 + n, write, detail);
  return MCDisassembler_Success;
}

opRR(ISA_ALL, NOT, 0) opRR(ISA_ALL, SWAP_B, 8) opRR(ISA_ALL, SWAP_W, 16)
  opRR(ISA_ALL, NEGC, 0) opRR(ISA_ALL, NEG, 0) opRR(ISA_ALL, EXTU_B, 8)
    opRR(ISA_ALL, EXTU_W, 16) opRR(ISA_ALL, EXTS_B,
                 8) opRR(ISA_ALL, EXTS_W, 16)

      static bool opADD_i(uint16_t code, uint64_t address,
              MCInst *MI, cs_mode mode,
              sh_info *info, cs_detail *detail)
{
  int r = (code >> 8) & 0x0f;
  MCInst_setOpcode(MI, SH_INS_ADD);
  set_imm(info, 1, code & 0xff);
  set_reg(info, SH_REG_R0 + r, write, detail);
  return MCDisassembler_Success;
}

static bool opMOV_BW_dsp(uint16_t code, uint64_t address, MCInst *MI,
       cs_mode mode, sh_info *info, cs_detail *detail)
{
  int dsp = (code & 0x0f);
  int r = (code >> 4) & 0x0f;
  int size = 1 + ((code >> 8) & 1);
  int rw = (code >> 10) & 1;
  MCInst_setOpcode(MI, SH_INS_MOV);
  set_mem_n(info, SH_OP_MEM_REG_DISP, SH_REG_R0 + r, dsp * size, 8 * size,
      1 - rw, detail);
  set_reg_n(info, SH_REG_R0, rw, rw, detail);
  info->op.op_count = 2;
  return MCDisassembler_Success;
}

static bool opSETRC(uint16_t code, uint64_t address, MCInst *MI, cs_mode mode,
        sh_info *info, cs_detail *detail)
{
  int imm = code & 0xff;
  if (!(mode & CS_MODE_SHDSP))
    return MCDisassembler_Fail;
  MCInst_setOpcode(MI, SH_INS_SETRC);
  set_imm(info, 0, imm);
  return MCDisassembler_Success;
}

static bool opJSR_N(uint16_t code, uint64_t address, MCInst *MI, cs_mode mode,
        sh_info *info, cs_detail *detail)
{
  int dsp = code & 0xff;
  if (isalevel(mode) != ISA_SH2A)
    return MCDisassembler_Fail;
  MCInst_setOpcode(MI, SH_INS_JSR_N);
  set_mem(info, SH_OP_MEM_TBR_DISP, SH_REG_INVALID, dsp * 4, 0, detail);
  return MCDisassembler_Success;
}

#define boperand(_code, _op, _imm, _reg) \
  int _op = (code >> 3) & 1; \
  int _imm = code & 7; \
  int _reg = (code >> 4) & 0x0f

static bool op86xx(uint16_t code, uint64_t address, MCInst *MI, cs_mode mode,
       sh_info *info, cs_detail *detail)
{
  static const sh_insn bop[] = { SH_INS_BCLR, SH_INS_BSET };
  boperand(code, op, imm, reg);
  if (isalevel(mode) != ISA_SH2A)
    return MCDisassembler_Fail;
  MCInst_setOpcode(MI, bop[op]);
  set_imm(info, 0, imm);
  set_reg(info, SH_REG_R0 + reg, write, detail);
  return MCDisassembler_Success;
}

static bool op87xx(uint16_t code, uint64_t address, MCInst *MI, cs_mode mode,
       sh_info *info, cs_detail *detail)
{
  static const sh_insn bop[] = { SH_INS_BST, SH_INS_BLD };
  boperand(code, op, imm, reg);
  if (isalevel(mode) != ISA_SH2A)
    return MCDisassembler_Fail;
  MCInst_setOpcode(MI, bop[op]);
  set_imm(info, 0, imm);
  set_reg(info, SH_REG_R0 + reg, op ? read : write, detail);
  return MCDisassembler_Success;
}

static bool opCMP_EQi(uint16_t code, uint64_t address, MCInst *MI, cs_mode mode,
          sh_info *info, cs_detail *detail)
{
  MCInst_setOpcode(MI, SH_INS_CMP_EQ);
  set_imm(info, 1, code & 0x00ff);
  set_reg(info, SH_REG_R0, read, detail);
  return MCDisassembler_Success;
}

#define opBranch(level, insn) \
  static bool op##insn(uint16_t code, uint64_t address, MCInst *MI, \
           cs_mode mode, sh_info *info, cs_detail *detail) \
  { \
    int dsp = code & 0x00ff; \
    if (level > isalevel(mode)) \
      return MCDisassembler_Fail; \
    if (dsp >= 0x80) \
      dsp = -256 + dsp; \
    MCInst_setOpcode(MI, SH_INS_##insn); \
    set_mem(info, SH_OP_MEM_PCR, SH_REG_INVALID, \
      address + 4 + dsp * 2, 0, detail); \
    if (detail) \
      set_groups(detail, 2, SH_GRP_JUMP, \
           SH_GRP_BRANCH_RELATIVE); \
    return MCDisassembler_Success; \
  }

opBranch(ISA_ALL, BT) opBranch(ISA_ALL, BF)
  /* bt/s / bf/s - SH2 */
  opBranch(ISA_SH2, BT_S) opBranch(ISA_SH2, BF_S)

#define opLDRSE(insn) \
  static bool op##insn(uint16_t code, uint64_t address, MCInst *MI, \
           cs_mode mode, sh_info *info, cs_detail *detail) \
  { \
    int dsp = code & 0xff; \
    if (!(mode & CS_MODE_SHDSP)) \
      return MCDisassembler_Fail; \
    MCInst_setOpcode(MI, SH_INS_##insn); \
    set_mem(info, SH_OP_MEM_PCR, SH_REG_INVALID, \
      address + 4 + dsp * 2, 0, detail); \
    return MCDisassembler_Success; \
  }

    static bool opLDRC(uint16_t code, uint64_t address, MCInst *MI,
           cs_mode mode, sh_info *info,
           cs_detail *detail)
{
  int imm = code & 0xff;
  if (!(mode & CS_MODE_SHDSP) || isalevel(mode) != ISA_SH4A)
    return MCDisassembler_Fail;
  MCInst_setOpcode(MI, SH_INS_LDRC);
  set_imm(info, 0, imm);
  return MCDisassembler_Success;
}

opLDRSE(LDRS) opLDRSE(LDRE)

#define opImmR0(insn) \
  static bool op##insn##_i(uint16_t code, uint64_t address, MCInst *MI, \
         cs_mode mode, sh_info *info, \
         cs_detail *detail) \
  { \
    MCInst_setOpcode(MI, SH_INS_##insn); \
    set_imm(info, 0, code & 0xff); \
    set_reg(info, SH_REG_R0, write, detail); \
    return MCDisassembler_Success; \
  }

  opImmR0(TST) opImmR0(AND) opImmR0(XOR) opImmR0(OR)

#define opImmMem(insn) \
  static bool op##insn##_B(uint16_t code, uint64_t address, MCInst *MI, \
         cs_mode mode, sh_info *info, \
         cs_detail *detail) \
  { \
    MCInst_setOpcode(MI, SH_INS_##insn); \
    set_imm(info, 0, code & 0xff); \
    set_mem(info, SH_OP_MEM_GBR_R0, SH_REG_R0, 0, 8, detail); \
    return MCDisassembler_Success; \
  }

    opImmMem(TST) opImmMem(AND) opImmMem(XOR) opImmMem(OR)

      static bool opMOV_pc(uint16_t code, uint64_t address,
               MCInst *MI, cs_mode mode,
               sh_info *info, cs_detail *detail)
{
  int sz = 16 << ((code >> 14) & 1);
  int dsp = (code & 0x00ff) * (sz / 8);
  int r = (code >> 8) & 0x0f;
  MCInst_setOpcode(MI, SH_INS_MOV);
  if (sz == 32)
    address &= ~3;
  set_mem(info, SH_OP_MEM_PCR, SH_REG_INVALID, address + 4 + dsp, sz,
    detail);
  set_reg(info, SH_REG_R0 + r, write, detail);
  return MCDisassembler_Success;
}

#define opBxx(insn, grp) \
  static bool op##insn(uint16_t code, uint64_t address, MCInst *MI, \
           cs_mode mode, sh_info *info, cs_detail *detail) \
  { \
    int dsp = (code & 0x0fff); \
    if (dsp >= 0x800) \
      dsp = -0x1000 + dsp; \
    MCInst_setOpcode(MI, SH_INS_##insn); \
    set_mem(info, SH_OP_MEM_PCR, SH_REG_INVALID, \
      address + 4 + dsp * 2, 0, detail); \
    if (detail) \
      set_groups(detail, 2, grp, SH_GRP_BRANCH_RELATIVE); \
    return MCDisassembler_Success; \
  }

opBxx(BRA, SH_GRP_JUMP) opBxx(BSR, SH_GRP_CALL)

  static bool opMOV_gbr(uint16_t code, uint64_t address, MCInst *MI,
            cs_mode mode, sh_info *info, cs_detail *detail)
{
  int sz = 8 << ((code >> 8) & 0x03);
  int dsp = (code & 0x00ff) * (sz / 8);
  int rw = (code >> 10) & 1;
  MCInst_setOpcode(MI, SH_INS_MOV);
  set_mem_n(info, SH_OP_MEM_GBR_DISP, SH_REG_GBR, dsp, sz, 1 - rw,
      detail);
  set_reg_n(info, SH_REG_R0, rw, rw, detail);
  info->op.op_count = 2;
  return MCDisassembler_Success;
}

static bool opTRAPA(uint16_t code, uint64_t address, MCInst *MI, cs_mode mode,
        sh_info *info, cs_detail *detail)
{
  MCInst_setOpcode(MI, SH_INS_TRAPA);
  set_imm(info, 0, code & 0xff);
  if (detail)
    set_groups(detail, 1, SH_GRP_INT);
  return MCDisassembler_Success;
}

static bool opMOVA(uint16_t code, uint64_t address, MCInst *MI, cs_mode mode,
       sh_info *info, cs_detail *detail)
{
  int dsp = (code & 0x00ff) * 4;
  MCInst_setOpcode(MI, SH_INS_MOVA);
  set_mem(info, SH_OP_MEM_PCR, SH_REG_INVALID, (address & ~3) + 4 + dsp,
    0, detail);
  set_reg(info, SH_REG_R0, write, detail);
  return MCDisassembler_Success;
}

static bool opMOV_i(uint16_t code, uint64_t address, MCInst *MI, cs_mode mode,
        sh_info *info, cs_detail *detail)
{
  int imm = (code & 0x00ff);
  int r = (code >> 8) & 0x0f;
  MCInst_setOpcode(MI, SH_INS_MOV);
  set_imm(info, 1, imm);
  set_reg(info, SH_REG_R0 + r, write, detail);
  return MCDisassembler_Success;
}

/* FPU instructions */
#define opFRR(insn) \
  static bool op##insn(uint16_t code, uint64_t address, MCInst *MI, \
           cs_mode mode, sh_info *info, cs_detail *detail) \
  { \
    int m = (code >> 4) & 0x0f; \
    int n = (code >> 8) & 0x0f; \
    MCInst_setOpcode(MI, SH_INS_##insn); \
    set_reg(info, SH_REG_FR0 + m, read, detail); \
    set_reg(info, SH_REG_FR0 + n, write, detail); \
    return MCDisassembler_Success; \
  }

#define opFRRcmp(insn) \
  static bool op##insn(uint16_t code, uint64_t address, MCInst *MI, \
           cs_mode mode, sh_info *info, cs_detail *detail) \
  { \
    int m = (code >> 4) & 0x0f; \
    int n = (code >> 8) & 0x0f; \
    MCInst_setOpcode(MI, SH_INS_##insn); \
    set_reg(info, SH_REG_FR0 + m, read, detail); \
    set_reg(info, SH_REG_FR0 + n, read, detail); \
    return MCDisassembler_Success; \
  }

opFRR(FADD) opFRR(FSUB) opFRR(FMUL) opFRR(FDIV) opFRRcmp(FCMP_EQ)
  opFRRcmp(FCMP_GT)

    static bool opFMOVm(MCInst *MI, enum direction rw,
            uint16_t code, sh_op_mem_type address,
            sh_info *info, cs_detail *detail)
{
  nm(code, (1 - rw));
  MCInst_setOpcode(MI, SH_INS_FMOV);
  set_mem_n(info, address, SH_REG_R0 + m, 0, 0, 1 - rw, detail);
  set_reg_n(info, SH_REG_FR0 + n, rw, rw, detail);
  info->op.op_count = 2;
  return MCDisassembler_Success;
}

static bool opfxx6(uint16_t code, uint64_t address, MCInst *MI, cs_mode mode,
       sh_info *info, cs_detail *detail)
{
  return opFMOVm(MI, write, code, SH_OP_MEM_REG_R0, info, detail);
}

static bool opfxx7(uint16_t code, uint64_t address, MCInst *MI, cs_mode mode,
       sh_info *info, cs_detail *detail)
{
  return opFMOVm(MI, read, code, SH_OP_MEM_REG_R0, info, detail);
}

static bool opfxx8(uint16_t code, uint64_t address, MCInst *MI, cs_mode mode,
       sh_info *info, cs_detail *detail)
{
  return opFMOVm(MI, write, code, SH_OP_MEM_REG_IND, info, detail);
}

static bool opfxx9(uint16_t code, uint64_t address, MCInst *MI, cs_mode mode,
       sh_info *info, cs_detail *detail)
{
  return opFMOVm(MI, write, code, SH_OP_MEM_REG_POST, info, detail);
}

static bool opfxxa(uint16_t code, uint64_t address, MCInst *MI, cs_mode mode,
       sh_info *info, cs_detail *detail)
{
  return opFMOVm(MI, read, code, SH_OP_MEM_REG_IND, info, detail);
}

static bool opfxxb(uint16_t code, uint64_t address, MCInst *MI, cs_mode mode,
       sh_info *info, cs_detail *detail)
{
  return opFMOVm(MI, read, code, SH_OP_MEM_REG_PRE, info, detail);
}

static bool opFMOV(uint16_t code, uint64_t address, MCInst *MI, cs_mode mode,
       sh_info *info, cs_detail *detail)
{
  nm(code, 0);
  MCInst_setOpcode(MI, SH_INS_FMOV);
  set_reg(info, SH_REG_FR0 + m, read, detail);
  set_reg(info, SH_REG_FR0 + n, write, detail);
  return MCDisassembler_Success;
}

static bool opfxxd(uint16_t code, uint64_t address, MCInst *MI, cs_mode mode,
       sh_info *info, cs_detail *detail)
{
  int fr = (code >> 8) & 0x0f;
  int dr = (code >> 9) & 0x07;
  int fvn = (code >> 10) & 0x03;
  int fvm = (code >> 8) & 0x03;
  sh_insn insn = SH_INS_INVALID;
  sh_reg s, d;
  static const struct ri_list list[] = {
    { 0, SH_INS_FSTS, ISA_ALL, shfpu },
    { 1, SH_INS_FLDS, ISA_ALL, shfpu },
    { 2, SH_INS_FLOAT, ISA_ALL, shfpu },
    { 3, SH_INS_FTRC, ISA_ALL, shfpu },
    { 4, SH_INS_FNEG, ISA_ALL, shfpu },
    { 5, SH_INS_FABS, ISA_ALL, shfpu },
    { 6, SH_INS_FSQRT, ISA_ALL, shfpu },
    { 7, SH_INS_FSRRA, ISA_ALL, shfpu },
    { 8, SH_INS_FLDI0, ISA_ALL, shfpu },
    { 9, SH_INS_FLDI1, ISA_ALL, shfpu },
    { 10, SH_INS_FCNVSD, ISA_SH4A, shfpu },
    { 11, SH_INS_FCNVDS, ISA_SH4A, shfpu },
    { 14, SH_INS_FIPR, ISA_SH4A, shfpu },
    { -1, SH_INS_INVALID, ISA_ALL, none },
  };
  static const sh_insn chg[] = { SH_INS_FSCHG, SH_INS_FPCHG, SH_INS_FRCHG,
               SH_INS_INVALID };
  insn = lookup_insn(list, (code >> 4) & 0x0f, mode);
  s = d = SH_REG_FPUL;
  if (insn != SH_INS_INVALID) {
    switch ((code >> 4) & 0x0f) {
    case 0:
    case 2:
      d = SH_REG_FR0 + fr;
      break;
    case 1:
    case 3:
      s = SH_REG_FR0 + fr;
      break;
    case 10:
      d = SH_REG_DR0 + dr;
      break;
    case 11:
      s = SH_REG_DR0 + dr;
      break;
    case 14:
      s = SH_REG_FV0 + fvm;
      d = SH_REG_FV0 + fvn;
      break;
    default:
      s = SH_REG_FR0 + fr;
      d = SH_REG_INVALID;
      break;
    }
  } else if ((code & 0x00f0) == 0x00f0) {
    if ((code & 0x01ff) == 0x00fd) {
      insn = SH_INS_FSCA;
      d = SH_REG_DR0 + dr;
    }
    if ((code & 0x03ff) == 0x01fd) {
      insn = SH_INS_FTRV;
      s = SH_REG_XMATRX;
      d = SH_REG_FV0 + fvn;
    }
    if ((code & 0x03ff) == 0x03fd) {
      insn = chg[(code >> 10) & 3];
      s = d = SH_REG_INVALID;
    }
  }
  if (insn == SH_INS_INVALID) {
    return MCDisassembler_Fail;
  }
  MCInst_setOpcode(MI, insn);
  if (s != SH_REG_INVALID) {
    set_reg(info, s, read, detail);
  }
  if (d != SH_REG_INVALID) {
    set_reg(info, d, write, detail);
  }
  return MCDisassembler_Success;
}

static bool opFMAC(uint16_t code, uint64_t address, MCInst *MI, cs_mode mode,
       sh_info *info, cs_detail *detail)
{
  int m = (code >> 4) & 0x0f;
  int n = (code >> 8) & 0x0f;
  MCInst_setOpcode(MI, SH_INS_FMAC);
  set_reg(info, SH_REG_FR0, read, detail);
  set_reg(info, SH_REG_FR0 + m, read, detail);
  set_reg(info, SH_REG_FR0 + n, write, detail);
  return MCDisassembler_Success;
}

#include "SHInsnTable.inc"

static bool decode_long(uint32_t code, uint64_t address, MCInst *MI,
      sh_info *info, cs_detail *detail)
{
  uint32_t imm;
  sh_insn insn = SH_INS_INVALID;
  int m, n;
  int dsp;
  int sz;
  static const sh_insn bop[] = {
    SH_INS_BCLR,  SH_INS_BSET,  SH_INS_BST, SH_INS_BLD,
    SH_INS_BAND,  SH_INS_BOR, SH_INS_BXOR,  SH_INS_INVALID,
    SH_INS_INVALID, SH_INS_INVALID, SH_INS_INVALID, SH_INS_BLDNOT,
    SH_INS_BANDNOT, SH_INS_BORNOT,  SH_INS_INVALID, SH_INS_INVALID,
  };
  switch (code >> 28) {
  case 0x0:
    imm = ((code >> 4) & 0x000f0000) | (code & 0xffff);
    n = (code >> 24) & 0x0f;
    if (code & 0x00010000) {
      // movi20s #imm,
      imm <<= 8;
      if (imm & (1 << (28 - 1)))
        imm |= ~((1 << 28) - 1);
      insn = SH_INS_MOVI20S;
    } else {
      // MOVI20
      if (imm & (1 << (28 - 1)))
        imm |= ~((1 << 20) - 1);
      insn = SH_INS_MOVI20;
    }
    set_imm(info, 0, imm);
    set_reg(info, SH_REG_R0 + n, write, detail);
    break;
  case 0x3:
    n = (code >> 24) & 0x0f;
    m = (code >> 20) & 0x0f;
    sz = (code >> 12) & 0x03;
    dsp = code & 0xfff;
    if (!(code & 0x80000)) {
      dsp <<= sz;
      switch ((code >> 14) & 0x3) {
      case 0: // mov.[bwl] Rm,@(disp,Rn)
        // fmov.s DRm,@(disp,Rn)
        if (sz < 3) {
          insn = SH_INS_MOV;
          set_reg(info, SH_REG_R0 + m, read,
            detail);
        } else {
          insn = SH_INS_FMOV;
          set_reg(info, SH_REG_DR0 + (m >> 1),
            read, detail);
        }
        set_mem(info, SH_OP_MEM_REG_DISP, SH_REG_R0 + n,
          dsp, 8 << sz, detail);
        break;
      case 1: // mov.[bwl] @(disp,Rm),Rn
        // fmov.s @(disp,Rm),DRn
        set_mem(info, SH_OP_MEM_REG_DISP, SH_REG_R0 + m,
          dsp, 8 << sz, detail);
        if (sz < 3) {
          insn = SH_INS_MOV;
          set_reg(info, SH_REG_R0 + n, write,
            detail);
        } else {
          insn = SH_INS_FMOV;
          set_reg(info, SH_REG_DR0 + (n >> 1),
            write, detail);
        }
        break;
      case 2: // movu.[bwl] @(disp,Rm),Rn
        if (sz < 2) {
          insn = SH_INS_MOVU;
          set_mem(info, SH_OP_MEM_REG_DISP,
            SH_REG_R0 + m, dsp, 8 << sz,
            detail);
          set_reg(info, SH_REG_R0 + n, write,
            detail);
        }
        break;
      }
    } else {
      // bitop #imm,@(disp,Rn)
      insn = bop[(code >> 12) & 0x0f];
      set_imm(info, 0, m & 7);
      set_mem(info, SH_OP_MEM_REG_DISP, SH_REG_R0 + n, dsp, 8,
        detail);
    }
  }
  if (insn != SH_INS_INVALID) {
    MCInst_setOpcode(MI, insn);
    return MCDisassembler_Success;
  } else {
    return MCDisassembler_Fail;
  }
}

static const sh_reg dsp_areg[2][4] = {
  { SH_REG_R4, SH_REG_R0, SH_REG_R5, SH_REG_R1 },
  { SH_REG_R6, SH_REG_R7, SH_REG_R2, SH_REG_R3 },
};

static bool decode_dsp_xy(sh_info *info, int xy, uint16_t code,
        cs_detail *detail)
{
  int a = (code >> 8) & 3;
  int d = (code >> 6) & 3;
  int dir;
  int sz;
  int op;

  static const sh_reg dreg[4][4] = {
    { SH_REG_DSP_A0, SH_REG_DSP_X0, SH_REG_DSP_A1, SH_REG_DSP_X1 },
    { SH_REG_DSP_A0, SH_REG_DSP_A1, SH_REG_DSP_Y0, SH_REG_DSP_Y1 },
    { SH_REG_DSP_X0, SH_REG_DSP_Y0, SH_REG_DSP_X1, SH_REG_DSP_Y1 },
    { SH_REG_DSP_Y0, SH_REG_DSP_Y1, SH_REG_DSP_X0, SH_REG_DSP_X1 },
  };

  if (xy) {
    op = code & 3;
    dir = 1 - ((code >> 4) & 1);
    sz = (code >> 5) & 1;
    if (code & 0x0c) {
      info->op.operands[xy].dsp.insn = SH_INS_DSP_NOP;
      return MCDisassembler_Success;
    }
  } else {
    op = (code >> 2) & 3;
    dir = 1 - ((code >> 5) & 1);
    sz = (code >> 4) & 1;
    if (code & 0x03) {
      info->op.operands[xy].dsp.insn = SH_INS_DSP_NOP;
      return MCDisassembler_Success;
    }
  }
  info->op.operands[xy].dsp.size = 16 << sz;
  info->op.operands[xy].dsp.insn = SH_INS_DSP_MOV;
  info->op.operands[xy].dsp.operand[1 - dir] =
    SH_OP_DSP_REG_IND + (op - 1);
  info->op.operands[xy].dsp.operand[dir] = SH_OP_DSP_REG;
  info->op.operands[xy].dsp.r[1 - dir] = dsp_areg[xy][a];
  info->op.operands[xy].dsp.size = 16 << sz;
  regs_rw(detail, dir,
    info->op.operands[xy].dsp.r[dir] = dreg[xy * 2 + dir][d]);
  switch (op) {
  case 0x03:
    regs_read(detail, SH_REG_R8 + xy);
    // Fail through
  case 0x02:
    regs_write(detail, dsp_areg[xy][a]);
    break;
  case 0x01:
    regs_read(detail, dsp_areg[xy][a]);
    break;
  default:
    return MCDisassembler_Fail;
  }
  return MCDisassembler_Success;
}

static bool set_dsp_move_d(sh_info *info, int xy, uint16_t code, cs_mode mode,
         cs_detail *detail)
{
  int a;
  int d;
  int dir;
  int op;
  static const sh_reg base[] = { SH_REG_DSP_A0, SH_REG_DSP_X0 };
  switch (xy) {
  default:
    printf("Invalid xy value %" PRId32 "\n", xy);
    return MCDisassembler_Fail;
  case 0:
    op = (code >> 2) & 3;
    dir = 1 - ((code >> 5) & 1);
    d = (code >> 7) & 1;
    a = (code >> 9) & 1;
    break;
  case 1:
    op = (code >> 0) & 3;
    dir = 1 - ((code >> 4) & 1);
    d = (code >> 6) & 1;
    a = (code >> 8) & 1;
    break;
  }
  if (op == 0x00) {
    if ((a || d || dir) && !(code & 0x0f))
      return MCDisassembler_Fail;
    info->op.operands[xy].dsp.insn = SH_INS_DSP_NOP;
  } else {
    info->op.operands[xy].dsp.insn = SH_INS_DSP_MOV;
    info->op.operands[xy].dsp.operand[1 - dir] =
      SH_OP_DSP_REG_IND + (op - 1);
    info->op.operands[xy].dsp.operand[dir] = SH_OP_DSP_REG;
    info->op.operands[xy].dsp.r[1 - dir] = SH_REG_R4 + xy * 2 + a;
    info->op.operands[xy].dsp.size = 16;
    regs_rw(detail, dir,
      info->op.operands[xy].dsp.r[dir] =
        base[dir] + d + dir ? (xy * 2) : 0);
    switch (op) {
    case 0x03:
      regs_read(detail, SH_REG_R8 + a);
      // Fail through
    case 0x02:
      regs_write(detail, SH_REG_R4 + xy * 2 + a);
      break;
    case 0x01:
      regs_read(detail, SH_REG_R4 + xy * 2 + a);
      break;
    }
  }
  return MCDisassembler_Success;
}

static bool decode_dsp_d(const uint16_t code, MCInst *MI, cs_mode mode,
       sh_info *info, cs_detail *detail)
{
  bool ret, dsp_long;
  MCInst_setOpcode(MI, SH_INS_DSP);
  if ((code & 0x3ff) == 0) {
    info->op.operands[0].dsp.insn = info->op.operands[1].dsp.insn =
      SH_INS_DSP_NOP;
    info->op.op_count = 2;
    return MCDisassembler_Success;
  }
  dsp_long = false;
  if (isalevel(mode) == ISA_SH4A) {
    if (!(code & 0x03) && (code & 0x0f) >= 0x04) {
      ret = decode_dsp_xy(info, 0, code, detail);
      ret &= set_dsp_move_d(info, 1, code, mode, detail);
      dsp_long |= true;
    }
    if ((code & 0x0f) <= 0x03 && (code & 0xff)) {
      ret = decode_dsp_xy(info, 1, code, detail);
      ret &= set_dsp_move_d(info, 0, code, mode, detail);
      dsp_long |= true;
    }
  }
  if (!dsp_long) {
    /* X op */
    ret = set_dsp_move_d(info, 0, code, mode, detail);
    /* Y op */
    ret &= set_dsp_move_d(info, 1, code, mode, detail);
  }

  info->op.op_count = 2;
  return ret;
}

static bool decode_dsp_s(const uint16_t code, MCInst *MI, sh_info *info,
       cs_detail *detail)
{
  int d = code & 1;
  int s = (code >> 1) & 1;
  int opr = (code >> 2) & 3;
  int as = (code >> 8) & 3;
  int ds = (code >> 4) & 0x0f;
  static const sh_reg regs[] = {
    SH_REG_DSP_RSV0, SH_REG_DSP_RSV1, SH_REG_DSP_RSV2,
    SH_REG_DSP_RSV3, SH_REG_DSP_RSV4, SH_REG_DSP_A1,
    SH_REG_DSP_RSV6, SH_REG_DSP_A0,   SH_REG_DSP_X0,
    SH_REG_DSP_X1,   SH_REG_DSP_Y0,   SH_REG_DSP_Y1,
    SH_REG_DSP_M0,   SH_REG_DSP_A1G,  SH_REG_DSP_M1,
    SH_REG_DSP_A0G,
  };

  if (regs[ds] == SH_REG_INVALID)
    return MCDisassembler_Fail;

  MCInst_setOpcode(MI, SH_INS_DSP);
  info->op.operands[0].dsp.insn = SH_INS_DSP_MOV;
  info->op.operands[0].dsp.operand[1 - d] = SH_OP_DSP_REG;
  info->op.operands[0].dsp.operand[d] = SH_OP_DSP_REG_PRE + opr;
  info->op.operands[0].dsp.r[1 - d] = regs[ds];
  info->op.operands[0].dsp.r[d] =
    SH_REG_R2 + ((as < 2) ? (as + 2) : (as - 2));
  switch (opr) {
  case 3:
    regs_read(detail, SH_REG_R8);
    /* Fail through */
  case 1:
    regs_read(detail, info->op.operands[0].dsp.r[d]);
    break;
  case 0:
  case 2:
    regs_write(detail, info->op.operands[0].dsp.r[d]);
  }
  regs_rw(detail, d, regs[ds]);
  info->op.operands[0].dsp.size = 16 << s;
  info->op.op_count = 1;
  return MCDisassembler_Success;
}

static const sh_reg dsp_reg_sd[6][4] = {
  { SH_REG_DSP_X0, SH_REG_DSP_X1, SH_REG_DSP_Y0, SH_REG_DSP_A1 },
  { SH_REG_DSP_Y0, SH_REG_DSP_Y1, SH_REG_DSP_X0, SH_REG_DSP_A1 },
  { SH_REG_DSP_X0, SH_REG_DSP_X1, SH_REG_DSP_A0, SH_REG_DSP_A1 },
  { SH_REG_DSP_Y0, SH_REG_DSP_Y1, SH_REG_DSP_M0, SH_REG_DSP_M1 },
  { SH_REG_DSP_M0, SH_REG_DSP_M1, SH_REG_DSP_A0, SH_REG_DSP_A1 },
  { SH_REG_DSP_X0, SH_REG_DSP_Y0, SH_REG_DSP_A0, SH_REG_DSP_A1 },
};
typedef enum { f_se, f_sf, f_sx, f_sy, f_dg, f_du } dsp_reg_opr;
static void set_reg_dsp_read(sh_info *info, int pos, dsp_reg_opr f, int r,
           cs_detail *detail)
{
  info->op.operands[2].dsp.r[pos] = dsp_reg_sd[f][r];
  regs_read(detail, dsp_reg_sd[f][r]);
}

static void set_reg_dsp_write_gu(sh_info *info, int pos, dsp_reg_opr f, int r,
         cs_detail *detail)
{
  info->op.operands[2].dsp.r[pos] = dsp_reg_sd[f][r];
  regs_write(detail, dsp_reg_sd[f][r]);
}

static const sh_reg regs_dz[] = {
  SH_REG_DSP_RSV0, SH_REG_DSP_RSV1, SH_REG_DSP_RSV2, SH_REG_DSP_RSV3,
  SH_REG_DSP_RSV4, SH_REG_DSP_A1,   SH_REG_DSP_RSV6, SH_REG_DSP_A0,
  SH_REG_DSP_X0,   SH_REG_DSP_X1,   SH_REG_DSP_Y0,   SH_REG_DSP_Y1,
  SH_REG_DSP_M0,   SH_REG_DSP_A1G,  SH_REG_DSP_M1,   SH_REG_DSP_A0G,
};

static void set_reg_dsp_write_z(sh_info *info, int pos, int r,
        cs_detail *detail)
{
  info->op.operands[2].dsp.r[pos] = regs_dz[r];
  regs_write(detail, regs_dz[r]);
}

static bool dsp_op_cc_3opr(uint32_t code, sh_info *info, sh_dsp_insn insn,
         sh_dsp_insn insn2, cs_detail *detail)
{
  info->op.operands[2].dsp.cc = (code >> 8) & 3;
  if (info->op.operands[2].dsp.cc > 0) {
    info->op.operands[2].dsp.insn = insn;
  } else {
    if (insn2 != SH_INS_DSP_INVALID)
      info->op.operands[2].dsp.insn = insn2;
    else
      return MCDisassembler_Fail;
  }
  if (info->op.operands[2].dsp.insn != SH_INS_DSP_PSUBr) {
    set_reg_dsp_read(info, 0, f_sx, (code >> 6) & 3, detail);
    set_reg_dsp_read(info, 1, f_sy, (code >> 4) & 3, detail);
  } else {
    set_reg_dsp_read(info, 1, f_sx, (code >> 6) & 3, detail);
    set_reg_dsp_read(info, 0, f_sy, (code >> 4) & 3, detail);
  }
  set_reg_dsp_write_z(info, 2, code & 0x0f, detail);
  info->op.op_count = 3;
  return MCDisassembler_Success;
}

static bool dsp_op_cc_2opr(uint32_t code, sh_info *info, sh_dsp_insn insn,
         int xy, int b, cs_detail *detail)
{
  if (((code >> 8) & 3) == 0)
    return MCDisassembler_Fail;
  info->op.operands[2].dsp.insn = (sh_dsp_insn)insn;
  set_reg_dsp_read(info, 0, xy, (code >> b) & 3, detail);
  set_reg_dsp_write_z(info, 2, code & 0x0f, detail);
  info->op.operands[2].dsp.cc = (code >> 8) & 3;
  info->op.op_count = 3;
  return MCDisassembler_Success;
}

static bool dsp_op_cc0_2opr(uint32_t code, sh_info *info, sh_dsp_insn insn,
          int xy, int b, cs_detail *detail)
{
  info->op.operands[2].dsp.insn = (sh_dsp_insn)insn;
  set_reg_dsp_read(info, 0, xy, (code >> b) & 3, detail);
  set_reg_dsp_write_z(info, 2, code & 0x0f, detail);
  info->op.operands[2].dsp.cc = (code >> 8) & 3;
  if (info->op.operands[2].dsp.cc == 1)
    return MCDisassembler_Fail;
  if (info->op.operands[2].dsp.cc == 0)
    info->op.operands[2].dsp.cc = SH_DSP_CC_NONE;
  info->op.op_count = 3;
  return MCDisassembler_Success;
}

static bool decode_dsp_3op(const uint32_t code, sh_info *info,
         cs_detail *detail)
{
  int cc = (code >> 8) & 3;
  int sx = (code >> 6) & 3;
  int sy = (code >> 4) & 3;
  int dz = (code >> 0) & 0x0f;

  if ((code & 0xef00) == 0x8000)
    return MCDisassembler_Fail;
  switch ((code >> 10) & 0x1f) {
  case 0x00:
    return dsp_op_cc_3opr(code, info, SH_INS_DSP_PSHL,
              SH_INS_DSP_INVALID, detail);
  case 0x01:
    if (cc == 0) {
      info->op.operands[2].dsp.insn = SH_INS_DSP_PCMP;
      set_reg_dsp_read(info, 0, f_sx, sx, detail);
      set_reg_dsp_read(info, 1, f_sy, sy, detail);
      info->op.op_count = 3;
      return MCDisassembler_Success;
    } else {
      return dsp_op_cc_3opr(code, info, SH_INS_DSP_PSUBr,
                SH_INS_DSP_INVALID, detail);
    }
  case 0x02:
    switch (sy) {
    case 0:
      if (cc == 0) {
        info->op.operands[2].dsp.insn = SH_INS_DSP_PABS;
        set_reg_dsp_read(info, 0, f_sx, sx, detail);
        set_reg_dsp_write_z(info, 1, dz, detail);
        info->op.op_count = 3;
        return MCDisassembler_Success;
      } else {
        return dsp_op_cc_2opr(code, info,
                  SH_INS_DSP_PDEC, f_sx, 6,
                  detail);
      }
    case 1:
      return dsp_op_cc0_2opr(code, info, SH_INS_DSP_PABS,
                 f_sx, 6, detail);
    default:
      return MCDisassembler_Fail;
    }
  case 0x03:
    if (cc != 0) {
      info->op.operands[2].dsp.insn = SH_INS_DSP_PCLR;
      info->op.operands[2].dsp.cc = cc;
      set_reg_dsp_write_z(info, 0, dz, detail);
      info->op.op_count = 3;
      return MCDisassembler_Success;
    } else
      return MCDisassembler_Fail;
  case 0x04:
    return dsp_op_cc_3opr(code, info, SH_INS_DSP_PSHA,
              SH_INS_DSP_INVALID, detail);
  case 0x05:
    return dsp_op_cc_3opr(code, info, SH_INS_DSP_PAND,
              SH_INS_DSP_INVALID, detail);
  case 0x06:
    switch (sy) {
    case 0:
      if (cc == 0) {
        info->op.operands[2].dsp.insn = SH_INS_DSP_PRND;
        set_reg_dsp_read(info, 0, f_sx, sx, detail);
        set_reg_dsp_write_z(info, 1, dz, detail);
        info->op.op_count = 3;
        return MCDisassembler_Success;
      } else {
        return dsp_op_cc_2opr(code, info,
                  SH_INS_DSP_PINC, f_sx, 6,
                  detail);
      }
    case 1:
      return dsp_op_cc0_2opr(code, info, SH_INS_DSP_PRND,
                 f_sx, 6, detail);
    default:
      return MCDisassembler_Fail;
    }
  case 0x07:
    switch (sy) {
    case 0:
      return dsp_op_cc_2opr(code, info, SH_INS_DSP_PDMSB,
                f_sx, 6, detail);
    case 1:
      return dsp_op_cc_2opr(code, info, SH_INS_DSP_PSWAP,
                f_sx, 6, detail);
    default:
      return MCDisassembler_Fail;
    }
  case 0x08:
    return dsp_op_cc_3opr(code, info, SH_INS_DSP_PSUB,
              SH_INS_DSP_PSUBC, detail);
  case 0x09:
    return dsp_op_cc_3opr(code, info, SH_INS_DSP_PXOR,
              SH_INS_DSP_PWSB, detail);
  case 0x0a:
    switch (sx) {
    case 0:
      if (cc == 0) {
        info->op.operands[2].dsp.insn = SH_INS_DSP_PABS;
        set_reg_dsp_read(info, 0, f_sy, sy, detail);
        set_reg_dsp_write_z(info, 1, dz, detail);
        info->op.op_count = 3;
        return MCDisassembler_Success;
      } else {
        return dsp_op_cc_2opr(code, info,
                  SH_INS_DSP_PDEC, f_sy, 4,
                  detail);
      }
    case 1:
      return dsp_op_cc_2opr(code, info, SH_INS_DSP_PABS, f_sy,
                4, detail);
    default:
      return MCDisassembler_Fail;
    }
  case 0x0c:
    if (cc == 0) {
      info->op.operands[2].dsp.insn = SH_INS_DSP_PADDC;
      set_reg_dsp_read(info, 0, f_sx, sx, detail);
      set_reg_dsp_read(info, 1, f_sy, sy, detail);
      set_reg_dsp_write_z(info, 2, dz, detail);
      info->op.op_count = 3;
      return MCDisassembler_Success;
    } else {
      return dsp_op_cc_3opr(code, info, SH_INS_DSP_PADD,
                SH_INS_DSP_INVALID, detail);
    }
  case 0x0d:
    return dsp_op_cc_3opr(code, info, SH_INS_DSP_POR,
              SH_INS_DSP_PWAD, detail);
  case 0x0e:
    if (cc == 0) {
      if (sx != 0)
        return MCDisassembler_Fail;
      info->op.operands[2].dsp.insn = SH_INS_DSP_PRND;
      set_reg_dsp_read(info, 0, f_sy, sy, detail);
      set_reg_dsp_write_z(info, 1, dz, detail);
      info->op.op_count = 3;
      return MCDisassembler_Success;
    } else {
      switch (sx) {
      case 0:
        return dsp_op_cc_2opr(code, info,
                  SH_INS_DSP_PINC, f_sy, 4,
                  detail);
      case 1:
        return dsp_op_cc_2opr(code, info,
                  SH_INS_DSP_PRND, f_sy, 4,
                  detail);
      default:
        return MCDisassembler_Fail;
      }
    }
  case 0x0f:
    switch (sx) {
    case 0:
      return dsp_op_cc_2opr(code, info, SH_INS_DSP_PDMSB,
                f_sy, 4, detail);
    case 1:
      return dsp_op_cc_2opr(code, info, SH_INS_DSP_PSWAP,
                f_sy, 4, detail);
    default:
      return MCDisassembler_Fail;
    }
  case 0x12:
    return dsp_op_cc_2opr(code, info, SH_INS_DSP_PNEG, f_sx, 6,
              detail);
  case 0x13:
  case 0x17:
    if (cc > 0) {
      info->op.operands[2].dsp.insn = SH_INS_DSP_PSTS;
      info->op.operands[2].dsp.cc = cc;
      regs_read(detail,
          info->op.operands[2].dsp.r[0] =
            SH_REG_MACH + ((code >> 12) & 1));
      set_reg_dsp_write_z(info, 1, dz, detail);
      info->op.op_count = 3;
      return MCDisassembler_Success;
    } else {
      return MCDisassembler_Fail;
    }
  case 0x16:
    return dsp_op_cc_2opr(code, info, SH_INS_DSP_PCOPY, f_sx, 6,
              detail);
  case 0x1a:
    return dsp_op_cc_2opr(code, info, SH_INS_DSP_PNEG, f_sy, 4,
              detail);
  case 0x1b:
  case 0x1f:
    if (cc > 0) {
      info->op.operands[2].dsp.insn = SH_INS_DSP_PLDS;
      info->op.operands[2].dsp.cc = cc;
      info->op.operands[2].dsp.r[0] = regs_dz[dz];
      regs_read(detail, regs_dz[dz]);
      regs_write(detail,
           info->op.operands[2].dsp.r[1] =
             SH_REG_MACH + ((code >> 12) & 1));
      info->op.op_count = 3;
      return MCDisassembler_Success;
    } else {
      return MCDisassembler_Fail;
    }
  case 0x1e:
    return dsp_op_cc_2opr(code, info, SH_INS_DSP_PCOPY, f_sy, 4,
              detail);
  default:
    return MCDisassembler_Fail;
  }
}

static bool decode_dsp_p(const uint32_t code, MCInst *MI, cs_mode mode,
       sh_info *info, cs_detail *detail)
{
  int dz = code & 0x0f;
  MCInst_setOpcode(MI, SH_INS_DSP);
  if (!decode_dsp_d(code >> 16, MI, mode, info, detail))
    return MCDisassembler_Fail;

  switch ((code >> 12) & 0x0f) {
  case 0x00:
  case 0x01:
    if ((code >> 11) & 1)
      return MCDisassembler_Fail;
    info->op.operands[2].dsp.insn =
      SH_INS_DSP_PSHL + ((code >> 12) & 1);
    info->op.operands[2].dsp.imm = (code >> 4) & 0x7f;
    set_reg_dsp_write_z(info, 1, dz, detail);
    info->op.op_count = 3;
    return MCDisassembler_Success;
  case 0x04:
    if ((((code >> 4) & 1) && isalevel(mode) != ISA_SH4A) ||
        (!((code >> 4) & 1) && (code & 3)) ||
        ((code >> 4) & 0x0f) >= 2)
      return MCDisassembler_Fail;

    info->op.operands[2].dsp.insn =
      SH_INS_DSP_PMULS + ((code >> 4) & 1);
    set_reg_dsp_read(info, 0, f_se, (code >> 10) & 3, detail);
    set_reg_dsp_read(info, 1, f_sf, (code >> 8) & 3, detail);
    set_reg_dsp_write_gu(info, 2, f_dg, (code >> 2) & 3, detail);
    if ((code >> 4) & 1)
      set_reg_dsp_write_gu(info, 3, f_du, (code >> 0) & 3,
               detail);
    info->op.op_count = 3;
    return MCDisassembler_Success;
  case 0x06:
  case 0x07:
    info->op.operands[2].dsp.insn =
      SH_INS_DSP_PSUB_PMULS + ((code >> 12) & 1);
    set_reg_dsp_read(info, 0, f_sx, (code >> 6) & 3, detail);
    set_reg_dsp_read(info, 1, f_sy, (code >> 4) & 3, detail);
    set_reg_dsp_write_gu(info, 2, f_du, (code >> 0) & 3, detail);
    set_reg_dsp_read(info, 3, f_se, (code >> 10) & 3, detail);
    set_reg_dsp_read(info, 4, f_sf, (code >> 8) & 3, detail);
    set_reg_dsp_write_gu(info, 5, f_dg, (code >> 2) & 3, detail);
    info->op.op_count = 3;
    return MCDisassembler_Success;
  default:
    if ((code >> 15) & 1)
      return decode_dsp_3op(code, info, detail);
  }
  return MCDisassembler_Fail;
}

static bool sh_disassemble(const uint8_t *code, MCInst *MI, uint64_t address,
         cs_mode mode, uint16_t *size, int code_len,
         sh_info *info, cs_detail *detail)
{
  int idx;
  uint32_t insn;
  bool dsp_result;
  if (MODE_IS_BIG_ENDIAN(mode)) {
    insn = code[0] << 8 | code[1];
  } else {
    insn = code[1] << 8 | code[0];
  }
  if (mode & CS_MODE_SH2A) {
    /* SH2A 32bit instruction test */
    if (((insn & 0xf007) == 0x3001 || (insn & 0xf00e) == 0x0000)) {
      if (code_len < 4)
        return MCDisassembler_Fail;
      *size = 4;
      // SH2A is only BIG ENDIAN.
      insn <<= 16;
      insn |= code[2] << 8 | code[3];
      if (decode_long(insn, address, MI, info, detail))
        return MCDisassembler_Success;
    }
  }
  /* Co-processor instructions */
  if ((insn & 0xf000) == 0xf000) {
    if (mode & CS_MODE_SHDSP) {
      dsp_result = MCDisassembler_Fail;
      switch (insn >> 10 & 3) {
      case 0:
        *size = 2;
        dsp_result = decode_dsp_d(insn, MI, mode, info,
                detail);
        break;
      case 1:
        *size = 2;
        dsp_result =
          decode_dsp_s(insn, MI, info, detail);
        break;
      case 2:
        if (code_len < 4)
          return MCDisassembler_Fail;
        *size = 4;
        if (MODE_IS_BIG_ENDIAN(mode)) {
          insn <<= 16;
          insn |= code[2] << 8 | code[3];
        } else
          insn |= (code[3] << 24) |
            (code[2] << 16);
        dsp_result = decode_dsp_p(insn, MI, mode, info,
                detail);
        break;
      }
      return dsp_result;
    }
    if ((mode & CS_MODE_SHFPU) == 0)
      return MCDisassembler_Fail;
  }

  *size = 2;
  if ((insn & 0xf000) >= 0x8000 && (insn & 0xf000) < 0xf000) {
    idx = insn >> 8;
  } else {
    idx = ((insn >> 8) & 0xf0) | (insn & 0x000f);
  }

  if (idx < ARR_SIZE(decode) && decode[idx]) {
    return decode[idx](insn, address, MI, mode, info, detail);
  } else {
    return MCDisassembler_Fail;
  }
}

bool SH_getInstruction(csh ud, const uint8_t *code, size_t code_len, MCInst *MI,
           uint16_t *size, uint64_t address, void *inst_info)
{
  cs_struct *handle = (cs_struct *)ud;
  sh_info *info = (sh_info *)handle->printer_info;
  cs_detail *detail = MI->flat_insn->detail;

  if (code_len < 2) {
    *size = 0;
    return MCDisassembler_Fail;
  }

  if (detail) {
    memset(detail, 0, offsetof(cs_detail, sh) + sizeof(cs_sh));
  }
  memset(info, 0, sizeof(sh_info));
  if (sh_disassemble(code, MI, address, handle->mode, size, code_len,
         info, detail) == MCDisassembler_Fail) {
    *size = 0;
    return MCDisassembler_Fail;
  } else {
    if (detail)
      detail->sh = info->op;
    return MCDisassembler_Success;
  }
}

#ifndef CAPSTONE_DIET
void SH_reg_access(const cs_insn *insn, cs_regs regs_read,
       uint8_t *regs_read_count, cs_regs regs_write,
       uint8_t *regs_write_count)
{
  if (insn->detail == NULL) {
    *regs_read_count = 0;
    *regs_write_count = 0;
  } else {
    *regs_read_count = insn->detail->regs_read_count;
    *regs_write_count = insn->detail->regs_write_count;

    memcpy(regs_read, insn->detail->regs_read,
           *regs_read_count * sizeof(insn->detail->regs_read[0]));
    memcpy(regs_write, insn->detail->regs_write,
           *regs_write_count * sizeof(insn->detail->regs_write[0]));
  }
}
#endif

Coverage Report

Created: 2025-10-28 07:02