/* Disassembler code for Renesas RX.

   Copyright (C) 2008-2025 Free Software Foundation, Inc.

   Contributed by Red Hat.

   Written by DJ Delorie.

   This file is part of the GNU opcodes library.

   This library is free software; you can redistribute it and/or modify

   it under the terms of the GNU General Public License as published by

   the Free Software Foundation; either version 3, or (at your option)

   any later version.

   It is distributed in the hope that it will be useful, but WITHOUT

   ANY WARRANTY; without even the implied warranty of MERCHANTABILITY

   or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public

   License for more details.

   You should have received a copy of the GNU General Public License

   along with this program; if not, write to the Free Software

   Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,

   MA 02110-1301, USA.  */

#include "sysdep.h"

#include <stdio.h>

#include "bfd.h"

#include "dis-asm.h"

#include "opcode/rx.h"

#include "libiberty.h"

#include "opintl.h"

#include <setjmp.h>

typedef struct

{

  bfd_vma pc;

  disassemble_info * dis;

} RX_Data;

struct private

{

  OPCODES_SIGJMP_BUF bailout;

};

static int

rx_get_byte (void * vdata)

{

  bfd_byte buf[1];

  RX_Data *rx_data = (RX_Data *) vdata;

  int status;

  status = rx_data->dis->read_memory_func (rx_data->pc,

             buf,

             1,

             rx_data->dis);

  if (status != 0)

    {

      struct private *priv = (struct private *) rx_data->dis->private_data;

      rx_data->dis->memory_error_func (status, rx_data->pc,

               rx_data->dis);

       OPCODES_SIGLONGJMP (priv->bailout, 1);

    }

  rx_data->pc ++;

  return buf[0];

}

static char const * size_names[RX_MAX_SIZE] =

{

  "", ".b", ".ub", ".b", ".w", ".uw", ".w", ".a", ".l", "", "<error>"

};

static char const * opsize_names[RX_MAX_SIZE] =

{

  "", ".b", ".b", ".b", ".w", ".w", ".w", ".a", ".l", ".d", "<error>"

};

static char const * register_names[] =

{

  /* General registers.  */

  "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",

  "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15",

  /* Control registers.  */

  "psw", "pc", "usp", "fpsw", NULL, NULL, NULL, NULL,

  "bpsw", "bpc", "isp", "fintv", "intb", "extb", NULL, NULL,

  "a0", "a1", NULL, NULL, NULL, NULL, NULL, NULL,

  NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL

};

static char const * condition_names[] =

{

  /* Condition codes.  */

  "eq", "ne", "c", "nc", "gtu", "leu", "pz", "n",

  "ge", "lt", "gt", "le", "o", "no", "<invalid>", "<invalid>"

};

static const char * flag_names[] =

{

  "c", "z", "s", "o", "", "", "", "",

  "", "", "", "", "", "", "", "",

  "i", "u", "", "", "", "", "", "",

  "", "", "", "", "", "", "", ""

};

static const char * double_register_names[] =

{

  "dr0", "dr1", "dr2", "dr3", "dr4", "dr5", "dr6", "dr7",

  "dr8", "dr9", "dr10", "dr11", "dr12", "dr13", "dr14", "dr15"

};

static const char * double_register_high_names[] =

{

  "drh0", "drh1", "drh2", "drh3", "drh4", "drh5", "drh6", "drh7",

  "drh8", "drh9", "drh10", "drh11", "drh12", "drh13", "drh14", "drh15"

};

static const char * double_register_low_names[] =

{

  "drl0", "drl1", "drl2", "drl3", "drl4", "drl5", "drl6", "drl7",

  "drl8", "drl9", "drl10", "drl11", "drl12", "drl13", "drl14", "drl15"

};

static const char * double_control_register_names[] =

{

  "dpsw", "dcmr", "decnt", "depc"

};

static const char * double_condition_names[] =

{

  "", "un", "eq", "", "lt", "", "le"

};

static inline const char *

get_register_name (unsigned int reg)

{

  if (reg < ARRAY_SIZE (register_names))

    return register_names[reg];

  return _("<invalid register number>");

}

static inline const char *

get_condition_name (unsigned int cond)

{

  if (cond < ARRAY_SIZE (condition_names))

    return condition_names[cond];

  return _("<invalid condition code>");

}

static inline const char *

get_flag_name (unsigned int flag)

{

  if (flag < ARRAY_SIZE (flag_names))

    return flag_names[flag];

  return _("<invalid flag>");

}

static inline const char *

get_double_register_name (unsigned int reg)

{

  if (reg < ARRAY_SIZE (double_register_names))

    return double_register_names[reg];

  return _("<invalid register number>");

}

static inline const char *

get_double_register_high_name (unsigned int reg)

{

  if (reg < ARRAY_SIZE (double_register_high_names))

    return double_register_high_names[reg];

  return _("<invalid register number>");

}

static inline const char *

get_double_register_low_name (unsigned int reg)

{

  if (reg < ARRAY_SIZE (double_register_low_names))

    return double_register_low_names[reg];

  return _("<invalid register number>");

}

static inline const char *

get_double_control_register_name (unsigned int reg)

{

  if (reg < ARRAY_SIZE (double_control_register_names))

    return double_control_register_names[reg];

  return _("<invalid register number>");

}

static inline const char *

get_double_condition_name (unsigned int cond)

{

  if (cond < ARRAY_SIZE (double_condition_names))

    return double_condition_names[cond];

  return _("<invalid condition code>");

}

static inline const char *

get_opsize_name (unsigned int opsize)

{

  if (opsize < ARRAY_SIZE (opsize_names))

    return opsize_names[opsize];

  return _("<invalid opsize>");

}

static inline const char *

get_size_name (unsigned int size)

{

  if (size < ARRAY_SIZE (size_names))

    return size_names[size];

  return _("<invalid size>");

}

int

print_insn_rx (bfd_vma addr, disassemble_info * dis)

{

  int rv;

  RX_Data rx_data;

  RX_Opcode_Decoded opcode;

  const char * s;

  struct private priv;

  dis->private_data = &priv;

  rx_data.pc = addr;

  rx_data.dis = dis;

  if (OPCODES_SIGSETJMP (priv.bailout) != 0)

    {

      /* Error return.  */

      return -1;

    }

  rv = rx_decode_opcode (addr, &opcode, rx_get_byte, &rx_data);

  dis->bytes_per_line = 10;

#define PR (dis->fprintf_func)

#define PS (dis->stream)

#define PC(c) PR (PS, "%c", c)

  /* Detect illegal instructions.  */

  if (opcode.op[0].size == RX_Bad_Size

      || register_names [opcode.op[0].reg] == NULL

      || register_names [opcode.op[1].reg] == NULL

      || register_names [opcode.op[2].reg] == NULL)

    {

      bfd_byte buf[10];

      int i;

      PR (PS, ".byte ");

      rx_data.dis->read_memory_func (rx_data.pc - rv, buf, rv, rx_data.dis);

      for (i = 0 ; i < rv; i++)

  PR (PS, "0x%02x ", buf[i]);

      return rv;

    }

  for (s = opcode.syntax; *s; s++)

    {

      if (*s != '%')

  {

    PC (*s);

  }

      else

  {

    RX_Opcode_Operand * oper;

    int do_size = 0;

    int do_hex = 0;

    int do_addr = 0;

    s ++;

    if (*s == 'S')

      {

        do_size = 1;

        s++;

      }

    if (*s == 'x')

      {

        do_hex = 1;

        s++;

      }

    if (*s == 'a')

      {

        do_addr = 1;

        s++;

      }

    switch (*s)

      {

      case '%':

        PC ('%');

        break;

      case 's':

        PR (PS, "%s", get_opsize_name (opcode.size));

        break;

      case 'b':

        s ++;

        if (*s == 'f')

    {

      int imm = opcode.op[2].addend;

      int slsb, dlsb, width;

      dlsb = (imm >> 5) & 0x1f;

      slsb = (imm & 0x1f);

      slsb = (slsb >= 0x10?(slsb ^ 0x1f) + 1:slsb);

      slsb = dlsb - slsb;

      slsb = (slsb < 0?-slsb:slsb);

      width = ((imm >> 10) & 0x1f) - dlsb;

      PR (PS, "#%d, #%d, #%d, %s, %s",

          slsb, dlsb, width,

          get_register_name (opcode.op[1].reg),

          get_register_name (opcode.op[0].reg));

    }

        break;

      case '0':

      case '1':

      case '2':

        oper = opcode.op + (*s - '0');

        if (do_size)

    {

      if (oper->type == RX_Operand_Indirect || oper->type == RX_Operand_Zero_Indirect)

        PR (PS, "%s", get_size_name (oper->size));

    }

        else

    switch (oper->type)

      {

      case RX_Operand_Immediate:

        if (do_addr)

          dis->print_address_func (oper->addend, dis);

        else if (do_hex

           || oper->addend > 999

           || oper->addend < -999)

          PR (PS, "%#x", oper->addend);

        else

          PR (PS, "%d", oper->addend);

        break;

      case RX_Operand_Register:

      case RX_Operand_TwoReg:

        PR (PS, "%s", get_register_name (oper->reg));

        break;

      case RX_Operand_Indirect:

        PR (PS, "%d[%s]", oper->addend, get_register_name (oper->reg));

        break;

      case RX_Operand_Zero_Indirect:

        PR (PS, "[%s]", get_register_name (oper->reg));

        break;

      case RX_Operand_Postinc:

        PR (PS, "[%s+]", get_register_name (oper->reg));

        break;

      case RX_Operand_Predec:

        PR (PS, "[-%s]", get_register_name (oper->reg));

        break;

      case RX_Operand_Condition:

        PR (PS, "%s", get_condition_name (oper->reg));

        break;

      case RX_Operand_Flag:

        PR (PS, "%s", get_flag_name (oper->reg));

        break;

      case RX_Operand_DoubleReg:

        PR (PS, "%s", get_double_register_name (oper->reg));

        break;

      case RX_Operand_DoubleRegH:

        PR (PS, "%s", get_double_register_high_name (oper->reg));

        break;

      case RX_Operand_DoubleRegL:

        PR (PS, "%s", get_double_register_low_name (oper->reg));

        break;

      case RX_Operand_DoubleCReg:

        PR (PS, "%s", get_double_control_register_name (oper->reg));

        break;

      case RX_Operand_DoubleCond:

        PR (PS, "%s", get_double_condition_name (oper->reg));

        break;

      default:

        PR (PS, "[???]");

        break;

      }

      }

  }

    }

  return rv;

}