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/* Disassemble h8300 instructions.
   Copyright 1993, 1994, 1996, 1998, 2000, 2001, 2002, 2003, 2004, 2005, 2006,
   2007, 2010  Free Software Foundation, Inc.
 
   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.  */
 
#define DEFINE_TABLE
 
#include "sysdep.h"
#define h8_opcodes h8ops
#include "opcode/h8300.h"
#include "dis-asm.h"
#include "opintl.h"
#include "libiberty.h"
 
struct h8_instruction
{
  int length;
  const struct h8_opcode *opcode;
};
 
struct h8_instruction *h8_instructions;
 
/* Run through the opcodes and sort them into order to make them easy
   to disassemble.  */
 
static void
bfd_h8_disassemble_init (void)
{
  unsigned int i;
  unsigned int nopcodes;
  const struct h8_opcode *p;
  struct h8_instruction *pi;
 
  nopcodes = sizeof (h8_opcodes) / sizeof (struct h8_opcode);
 
  h8_instructions = xmalloc (nopcodes * sizeof (struct h8_instruction));
 
  for (p = h8_opcodes, pi = h8_instructions; p->name; p++, pi++)
    {
      /* Just make sure there are an even number of nibbles in it, and
         that the count is the same as the length.  */
      for (i = 0; p->data.nib[i] != (op_type) E; i++)
        ;
 
      if (i & 1)
        {
          fprintf (stderr, "Internal error, h8_disassemble_init.\n");
          abort ();
        }
 
      pi->length = i / 2;
      pi->opcode = p;
    }
 
  /* Add entry for the NULL vector terminator.  */
  pi->length = 0;
  pi->opcode = p;
}
 
static void
extract_immediate (FILE *stream,
                   op_type looking_for,
                   int thisnib,
                   unsigned char *data,
                   int *cst,
                   int *len,
                   const struct h8_opcode *q)
{
  switch (looking_for & SIZE)
    {
    case L_2:
      *len = 2;
      *cst = thisnib & 3;
 
      /* DISP2 special treatment.  */
      if ((looking_for & MODE) == DISP)
        {
          if (OP_KIND (q->how) == O_MOVAB
              || OP_KIND (q->how) == O_MOVAW
              || OP_KIND (q->how) == O_MOVAL)
            {
              /* Handling for mova insn.  */
              switch (q->args.nib[0] & MODE)
                {
                case INDEXB:
                default:
                  break;
                case INDEXW:
                  *cst *= 2;
                  break;
                case INDEXL:
                  *cst *= 4;
                  break;
                }
            }
          else
            {
              /* Handling for non-mova insn.  */
              switch (OP_SIZE (q->how))
                {
                default: break;
                case SW:
                  *cst *= 2;
                  break;
                case SL:
                  *cst *= 4;
                  break;
                }
            }
        }
      break;
    case L_8:
      *len = 8;
      *cst = data[0];
      break;
    case L_16:
    case L_16U:
      *len = 16;
      *cst = (data[0] << 8) + data [1];
#if 0
      if ((looking_for & SIZE) == L_16)
        *cst = (short) *cst;    /* Sign extend.  */
#endif
      break;
    case L_32:
      *len = 32;
      *cst = (data[0] << 24) + (data[1] << 16) + (data[2] << 8) + data[3];
      break;
    default:
      *len = 0;
      *cst = 0;
      fprintf (stream, "DISP bad size\n");
      break;
    }
}
 
static const char *regnames[] =
{
  "r0h", "r1h", "r2h", "r3h", "r4h", "r5h", "r6h", "r7h",
  "r0l", "r1l", "r2l", "r3l", "r4l", "r5l", "r6l", "r7l"
};
static const char *wregnames[] =
{
  "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",
  "e0", "e1", "e2", "e3", "e4", "e5", "e6", "e7"
};
static const char *lregnames[] =
{
  "er0", "er1", "er2", "er3", "er4", "er5", "er6", "er7",
  "er0", "er1", "er2", "er3", "er4", "er5", "er6", "er7"
};
static const char *cregnames[] =
{
  "ccr", "exr", "mach", "macl", "", "", "vbr", "sbr"
};
 
static void
print_one_arg (disassemble_info *info,
               bfd_vma addr,
               op_type x,
               int cst,
               int cstlen,
               int rdisp_n,
               int rn,
               const char **pregnames,
               int len)
{
  void * stream = info->stream;
  fprintf_ftype outfn = info->fprintf_func;
 
  if ((x & SIZE) == L_3 || (x & SIZE) == L_3NZ)
    outfn (stream, "#0x%x", (unsigned) cst);
  else if ((x & MODE) == IMM)
    outfn (stream, "#0x%x", (unsigned) cst);
  else if ((x & MODE) == DBIT || (x & MODE) == KBIT)
    outfn (stream, "#%d", (unsigned) cst);
  else if ((x & MODE) == CONST_2)
    outfn (stream, "#2");
  else if ((x & MODE) == CONST_4)
    outfn (stream, "#4");
  else if ((x & MODE) == CONST_8)
    outfn (stream, "#8");
  else if ((x & MODE) == CONST_16)
    outfn (stream, "#16");
  else if ((x & MODE) == REG)
    {
      switch (x & SIZE)
        {
        case L_8:
          outfn (stream, "%s", regnames[rn]);
          break;
        case L_16:
        case L_16U:
          outfn (stream, "%s", wregnames[rn]);
          break;
        case L_P:
        case L_32:
          outfn (stream, "%s", lregnames[rn]);
          break;
        }
    }
  else if ((x & MODE) == LOWREG)
    {
      switch (x & SIZE)
        {
        case L_8:
          /* Always take low half of reg.  */
          outfn (stream, "%s.b", regnames[rn < 8 ? rn + 8 : rn]);
          break;
        case L_16:
        case L_16U:
          /* Always take low half of reg.  */
          outfn (stream, "%s.w", wregnames[rn < 8 ? rn : rn - 8]);
          break;
        case L_P:
        case L_32:
          outfn (stream, "%s.l", lregnames[rn]);
          break;
        }
    }
  else if ((x & MODE) == POSTINC)
    outfn (stream, "@%s+", pregnames[rn]);
 
  else if ((x & MODE) == POSTDEC)
    outfn (stream, "@%s-", pregnames[rn]);
 
  else if ((x & MODE) == PREINC)
    outfn (stream, "@+%s", pregnames[rn]);
 
  else if ((x & MODE) == PREDEC)
    outfn (stream, "@-%s", pregnames[rn]);
 
  else if ((x & MODE) == IND)
    outfn (stream, "@%s", pregnames[rn]);
 
  else if ((x & MODE) == ABS || (x & ABSJMP))
    outfn (stream, "@0x%x:%d", (unsigned) cst, cstlen);
 
  else if ((x & MODE) == MEMIND)
    outfn (stream, "@@%d (0x%x)", cst, cst);
 
  else if ((x & MODE) == VECIND)
    {
      /* FIXME Multiplier should be 2 or 4, depending on processor mode,
         by which is meant "normal" vs. "middle", "advanced", "maximum".  */
 
      int offset = (cst + 0x80) * 4;
      outfn (stream, "@@%d (0x%x)", offset, offset);
    }
  else if ((x & MODE) == PCREL)
    {
      if ((x & SIZE) == L_16 ||
          (x & SIZE) == L_16U)
        {
          outfn (stream, ".%s%d (0x%lx)",
                   (short) cst > 0 ? "+" : "",
                   (short) cst,
                   (long)(addr + (short) cst + len));
        }
      else
        {
          outfn (stream, ".%s%d (0x%lx)",
                   (char) cst > 0 ? "+" : "",
                   (char) cst,
                   (long)(addr + (char) cst + len));
        }
    }
  else if ((x & MODE) == DISP)
    outfn (stream, "@(0x%x:%d,%s)", cst, cstlen, pregnames[rdisp_n]);
 
  else if ((x & MODE) == INDEXB)
    /* Always take low half of reg.  */
    outfn (stream, "@(0x%x:%d,%s.b)", cst, cstlen,
           regnames[rdisp_n < 8 ? rdisp_n + 8 : rdisp_n]);
 
  else if ((x & MODE) == INDEXW)
    /* Always take low half of reg.  */
    outfn (stream, "@(0x%x:%d,%s.w)", cst, cstlen,
           wregnames[rdisp_n < 8 ? rdisp_n : rdisp_n - 8]);
 
  else if ((x & MODE) == INDEXL)
    outfn (stream, "@(0x%x:%d,%s.l)", cst, cstlen, lregnames[rdisp_n]);
 
  else if (x & CTRL)
    outfn (stream, cregnames[rn]);
 
  else if ((x & MODE) == CCR)
    outfn (stream, "ccr");
 
  else if ((x & MODE) == EXR)
    outfn (stream, "exr");
 
  else if ((x & MODE) == MACREG)
    outfn (stream, "mac%c", cst ? 'l' : 'h');
 
  else
    /* xgettext:c-format */
    outfn (stream, _("Hmmmm 0x%x"), x);
}
 
static unsigned int
bfd_h8_disassemble (bfd_vma addr, disassemble_info *info, int mach)
{
  /* Find the first entry in the table for this opcode.  */
  int regno[3] = { 0, 0, 0 };
  int dispregno[3] = { 0, 0, 0 };
  int cst[3] = { 0, 0, 0 };
  int cstlen[3] = { 0, 0, 0 };
  static bfd_boolean init = 0;
  const struct h8_instruction *qi;
  char const **pregnames = mach != 0 ? lregnames : wregnames;
  int status;
  unsigned int l;
  unsigned char data[MAX_CODE_NIBBLES];
  void *stream = info->stream;
  fprintf_ftype outfn = info->fprintf_func;
 
  if (!init)
    {
      bfd_h8_disassemble_init ();
      init = 1;
    }
 
  status = info->read_memory_func (addr, data, 2, info);
  if (status != 0)
    {
      info->memory_error_func (status, addr, info);
      return -1;
    }
 
  for (l = 2; status == 0 && l < sizeof (data) / 2; l += 2)
    status = info->read_memory_func (addr + l, data + l, 2, info);
 
  /* Find the exact opcode/arg combo.  */
  for (qi = h8_instructions; qi->opcode->name; qi++)
    {
      const struct h8_opcode *q = qi->opcode;
      const op_type *nib = q->data.nib;
      unsigned int len = 0;
 
      while (1)
        {
          op_type looking_for = *nib;
          int thisnib = data[len / 2];
          int opnr;
 
          thisnib = (len & 1) ? (thisnib & 0xf) : ((thisnib / 16) & 0xf);
          opnr = ((looking_for & OP3) == OP3 ? 2
                  : (looking_for & DST) == DST ? 1 : 0);
 
          if (looking_for < 16 && looking_for >= 0)
            {
              if (looking_for != thisnib)
                goto fail;
            }
          else
            {
              if ((int) looking_for & (int) B31)
                {
                  if (!((thisnib & 0x8) != 0))
                    goto fail;
 
                  looking_for = (op_type) ((int) looking_for & ~(int) B31);
                  thisnib &= 0x7;
                }
              else if ((int) looking_for & (int) B30)
                {
                  if (!((thisnib & 0x8) == 0))
                    goto fail;
 
                  looking_for = (op_type) ((int) looking_for & ~(int) B30);
                }
 
              if ((int) looking_for & (int) B21)
                {
                  if (!((thisnib & 0x4) != 0))
                    goto fail;
 
                  looking_for = (op_type) ((int) looking_for & ~(int) B21);
                  thisnib &= 0xb;
                }
              else if ((int) looking_for & (int) B20)
                {
                  if (!((thisnib & 0x4) == 0))
                    goto fail;
 
                  looking_for = (op_type) ((int) looking_for & ~(int) B20);
                }
              if ((int) looking_for & (int) B11)
                {
                  if (!((thisnib & 0x2) != 0))
                    goto fail;
 
                  looking_for = (op_type) ((int) looking_for & ~(int) B11);
                  thisnib &= 0xd;
                }
              else if ((int) looking_for & (int) B10)
                {
                  if (!((thisnib & 0x2) == 0))
                    goto fail;
 
                  looking_for = (op_type) ((int) looking_for & ~(int) B10);
                }
 
              if ((int) looking_for & (int) B01)
                {
                  if (!((thisnib & 0x1) != 0))
                    goto fail;
 
                  looking_for = (op_type) ((int) looking_for & ~(int) B01);
                  thisnib &= 0xe;
                }
              else if ((int) looking_for & (int) B00)
                {
                  if (!((thisnib & 0x1) == 0))
                    goto fail;
 
                  looking_for = (op_type) ((int) looking_for & ~(int) B00);
                }
 
              if (looking_for & IGNORE)
                {
                  /* Hitachi has declared that IGNORE must be zero.  */
                  if (thisnib != 0)
                    goto fail;
                }
              else if ((looking_for & MODE) == DATA)
                {
                  ;                     /* Skip embedded data.  */
                }
              else if ((looking_for & MODE) == DBIT)
                {
                  /* Exclude adds/subs by looking at bit 0 and 2, and
                     make sure the operand size, either w or l,
                     matches by looking at bit 1.  */
                  if ((looking_for & 7) != (thisnib & 7))
                    goto fail;
 
                  cst[opnr] = (thisnib & 0x8) ? 2 : 1;
                }
              else if ((looking_for & MODE) == DISP
                       || (looking_for & MODE) == ABS
                       || (looking_for & MODE) == PCREL
                       || (looking_for & MODE) == INDEXB
                       || (looking_for & MODE) == INDEXW
                       || (looking_for & MODE) == INDEXL)
                {
                  extract_immediate (stream, looking_for, thisnib,
                                     data + len / 2, cst + opnr,
                                     cstlen + opnr, q);
                  /* Even address == bra, odd == bra/s.  */
                  if (q->how == O (O_BRAS, SB))
                    cst[opnr] -= 1;
                }
              else if ((looking_for & MODE) == REG
                       || (looking_for & MODE) == LOWREG
                       || (looking_for & MODE) == IND
                       || (looking_for & MODE) == PREINC
                       || (looking_for & MODE) == POSTINC
                       || (looking_for & MODE) == PREDEC
                       || (looking_for & MODE) == POSTDEC)
                {
                  regno[opnr] = thisnib;
                }
              else if (looking_for & CTRL)      /* Control Register.  */
                {
                  thisnib &= 7;
                  if (((looking_for & MODE) == CCR  && (thisnib != C_CCR))
                      || ((looking_for & MODE) == EXR  && (thisnib != C_EXR))
                      || ((looking_for & MODE) == MACH && (thisnib != C_MACH))
                      || ((looking_for & MODE) == MACL && (thisnib != C_MACL))
                      || ((looking_for & MODE) == VBR  && (thisnib != C_VBR))
                      || ((looking_for & MODE) == SBR  && (thisnib != C_SBR)))
                    goto fail;
                  if (((looking_for & MODE) == CCR_EXR
                       && (thisnib != C_CCR && thisnib != C_EXR))
                      || ((looking_for & MODE) == VBR_SBR
                          && (thisnib != C_VBR && thisnib != C_SBR))
                      || ((looking_for & MODE) == MACREG
                          && (thisnib != C_MACH && thisnib != C_MACL)))
                    goto fail;
                  if (((looking_for & MODE) == CC_EX_VB_SB
                       && (thisnib != C_CCR && thisnib != C_EXR
                           && thisnib != C_VBR && thisnib != C_SBR)))
                    goto fail;
 
                  regno[opnr] = thisnib;
                }
              else if ((looking_for & SIZE) == L_5)
                {
                  cst[opnr] = data[len / 2] & 31;
                  cstlen[opnr] = 5;
                }
              else if ((looking_for & SIZE) == L_4)
                {
                  cst[opnr] = thisnib;
                  cstlen[opnr] = 4;
                }
              else if ((looking_for & SIZE) == L_16
                       || (looking_for & SIZE) == L_16U)
                {
                  cst[opnr] = (data[len / 2]) * 256 + data[(len + 2) / 2];
                  cstlen[opnr] = 16;
                }
              else if ((looking_for & MODE) == MEMIND)
                {
                  cst[opnr] = data[1];
                }
              else if ((looking_for & MODE) == VECIND)
                {
                  cst[opnr] = data[1] & 0x7f;
                }
              else if ((looking_for & SIZE) == L_32)
                {
                  int i = len / 2;
 
                  cst[opnr] = ((data[i] << 24)
                               | (data[i + 1] << 16)
                               | (data[i + 2] << 8)
                               | (data[i + 3]));
 
                  cstlen[opnr] = 32;
                }
              else if ((looking_for & SIZE) == L_24)
                {
                  int i = len / 2;
 
                  cst[opnr] =
                    (data[i] << 16) | (data[i + 1] << 8) | (data[i + 2]);
                  cstlen[opnr] = 24;
                }
              else if (looking_for & IGNORE)
                {
                  ;
                }
              else if (looking_for & DISPREG)
                {
                  dispregno[opnr] = thisnib & 7;
                }
              else if ((looking_for & MODE) == KBIT)
                {
                  switch (thisnib)
                    {
                    case 9:
                      cst[opnr] = 4;
                      break;
                    case 8:
                      cst[opnr] = 2;
                      break;
                    case 0:
                      cst[opnr] = 1;
                      break;
                    default:
                      goto fail;
                    }
                }
              else if ((looking_for & SIZE) == L_8)
                {
                  cstlen[opnr] = 8;
                  cst[opnr] = data[len / 2];
                }
              else if ((looking_for & SIZE) == L_3
                       || (looking_for & SIZE) == L_3NZ)
                {
                  cst[opnr] = thisnib & 0x7;
                  if (cst[opnr] == 0 && (looking_for & SIZE) == L_3NZ)
                    goto fail;
                }
              else if ((looking_for & SIZE) == L_2)
                {
                  cstlen[opnr] = 2;
                  cst[opnr] = thisnib & 0x3;
                }
              else if ((looking_for & MODE) == MACREG)
                {
                  cst[opnr] = (thisnib == 3);
                }
              else if (looking_for == (op_type) E)
                {
                  outfn (stream, "%s\t", q->name);
 
                  /* Gross.  Disgusting.  */
                  if (strcmp (q->name, "ldm.l") == 0)
                    {
                      int count, high;
 
                      count = (data[1] / 16) & 0x3;
                      high = regno[1];
 
                      outfn (stream, "@sp+,er%d-er%d", high - count, high);
                      return qi->length;
                    }
 
                  if (strcmp (q->name, "stm.l") == 0)
                    {
                      int count, low;
 
                      count = (data[1] / 16) & 0x3;
                      low = regno[0];
 
                      outfn (stream, "er%d-er%d,@-sp", low, low + count);
                      return qi->length;
                    }
                  if (strcmp (q->name, "rte/l") == 0
                      || strcmp (q->name, "rts/l") == 0)
                    {
                      if (regno[0] == 0)
                        outfn (stream, "er%d", regno[1]);
                      else
                        outfn (stream, "er%d-er%d", regno[1] - regno[0],
                               regno[1]);
                      return qi->length;
                    }
                  if (CONST_STRNEQ (q->name, "mova"))
                    {
                      const op_type *args = q->args.nib;
 
                      if (args[1] == (op_type) E)
                        {
                          /* Short form.  */
                          print_one_arg (info, addr, args[0], cst[0],
                                         cstlen[0], dispregno[0], regno[0],
                                         pregnames, qi->length);
                          outfn (stream, ",er%d", dispregno[0]);
                        }
                      else
                        {
                          outfn (stream, "@(0x%x:%d,", cst[0], cstlen[0]);
                          print_one_arg (info, addr, args[1], cst[1],
                                         cstlen[1], dispregno[1], regno[1],
                                         pregnames, qi->length);
                          outfn (stream, ".%c),",
                                 (args[0] & MODE) == INDEXB ? 'b' : 'w');
                          print_one_arg (info, addr, args[2], cst[2],
                                         cstlen[2], dispregno[2], regno[2],
                                         pregnames, qi->length);
                        }
                      return qi->length;
                    }
                  /* Fill in the args.  */
                  {
                    const op_type *args = q->args.nib;
                    int hadone = 0;
                    int nargs;
 
                    /* Special case handling for the adds and subs instructions
                       since in H8 mode thay can only take the r0-r7 registers
                       but in other (higher) modes they can take the er0-er7
                       registers as well.  */
                    if (strcmp (qi->opcode->name, "adds") == 0
                        || strcmp (qi->opcode->name, "subs") == 0)
                      {
                        outfn (stream, "#%d,%s", cst[0], pregnames[regno[1] & 0x7]);
                        return qi->length;
                      }
 
                    for (nargs = 0;
                         nargs < 3 && args[nargs] != (op_type) E;
                         nargs++)
                      {
                        int x = args[nargs];
 
                        if (hadone)
                          outfn (stream, ",");
 
                        print_one_arg (info, addr, x,
                                       cst[nargs], cstlen[nargs],
                                       dispregno[nargs], regno[nargs],
                                       pregnames, qi->length);
 
                        hadone = 1;
                      }
                  }
 
                  return qi->length;
                }
              else
                /* xgettext:c-format */
                outfn (stream, _("Don't understand 0x%x \n"), looking_for);
            }
 
          len++;
          nib++;
        }
 
    fail:
      ;
    }
 
  /* Fell off the end.  */
  outfn (stream, ".word\tH'%x,H'%x", data[0], data[1]);
  return 2;
}
 
int
print_insn_h8300 (bfd_vma addr, disassemble_info *info)
{
  return bfd_h8_disassemble (addr, info, 0);
}
 
int
print_insn_h8300h (bfd_vma addr, disassemble_info *info)
{
  return bfd_h8_disassemble (addr, info, 1);
}
 
int
print_insn_h8300s (bfd_vma addr, disassemble_info *info)
{
  return bfd_h8_disassemble (addr, info, 2);
}

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[/] [openrisc/] [trunk/] [gnu-src/] [gdb-7.2/] [opcodes/] [h8300-dis.c] - Blame information for rev 481

Line No.	Rev	Author	Line
1	330	jeremybenn	`/* Disassemble h8300 instructions.`
2			`Copyright 1993, 1994, 1996, 1998, 2000, 2001, 2002, 2003, 2004, 2005, 2006,`
3			`2007, 2010 Free Software Foundation, Inc.`
4
5			`This file is part of the GNU opcodes library.`
6
7			`This library is free software; you can redistribute it and/or modify`
8			`it under the terms of the GNU General Public License as published by`
9			`the Free Software Foundation; either version 3, or (at your option)`
10			`any later version.`
11
12			`It is distributed in the hope that it will be useful, but WITHOUT`
13			`ANY WARRANTY; without even the implied warranty of MERCHANTABILITY`
14			`or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public`
15			`License for more details.`
16
17			`You should have received a copy of the GNU General Public License`
18			`along with this program; if not, write to the Free Software`
19			`Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,`
20			`MA 02110-1301, USA. */`
21
22			`#define DEFINE_TABLE`
23
24			`#include "sysdep.h"`
25			`#define h8_opcodes h8ops`
26			`#include "opcode/h8300.h"`
27			`#include "dis-asm.h"`
28			`#include "opintl.h"`
29			`#include "libiberty.h"`
30
31			`struct h8_instruction`
32			`{`
33			`int length;`
34			`const struct h8_opcode *opcode;`
35			`};`
36
37			`struct h8_instruction *h8_instructions;`
38
39			`/* Run through the opcodes and sort them into order to make them easy`
40			`to disassemble. */`
41
42			`static void`
43			`bfd_h8_disassemble_init (void)`
44			`{`
45			`unsigned int i;`
46			`unsigned int nopcodes;`
47			`const struct h8_opcode *p;`
48			`struct h8_instruction *pi;`
49
50			`nopcodes = sizeof (h8_opcodes) / sizeof (struct h8_opcode);`
51
52			`h8_instructions = xmalloc (nopcodes * sizeof (struct h8_instruction));`
53
54			`for (p = h8_opcodes, pi = h8_instructions; p->name; p++, pi++)`
55			`{`
56			`/* Just make sure there are an even number of nibbles in it, and`
57			`that the count is the same as the length. */`
58			`for (i = 0; p->data.nib[i] != (op_type) E; i++)`
59			`;`
60
61			`if (i & 1)`
62			`{`
63			`fprintf (stderr, "Internal error, h8_disassemble_init.\n");`
64			`abort ();`
65			`}`
66
67			`pi->length = i / 2;`
68			`pi->opcode = p;`
69			`}`
70
71			`/* Add entry for the NULL vector terminator. */`
72			`pi->length = 0;`
73			`pi->opcode = p;`
74			`}`
75
76			`static void`
77			`extract_immediate (FILE *stream,`
78			`op_type looking_for,`
79			`int thisnib,`
80			`unsigned char *data,`
81			`int *cst,`
82			`int *len,`
83			`const struct h8_opcode *q)`
84			`{`
85			`switch (looking_for & SIZE)`
86			`{`
87			`case L_2:`
88			`*len = 2;`
89			`*cst = thisnib & 3;`
90
91			`/* DISP2 special treatment. */`
92			`if ((looking_for & MODE) == DISP)`
93			`{`
94			`if (OP_KIND (q->how) == O_MOVAB`
95			`\|\| OP_KIND (q->how) == O_MOVAW`
96			`\|\| OP_KIND (q->how) == O_MOVAL)`
97			`{`
98			`/* Handling for mova insn. */`
99			`switch (q->args.nib[0] & MODE)`
100			`{`
101			`case INDEXB:`
102			`default:`
103			`break;`
104			`case INDEXW:`
105			`cst = 2;`
106			`break;`
107			`case INDEXL:`
108			`cst = 4;`
109			`break;`
110			`}`
111			`}`
112			`else`
113			`{`
114			`/* Handling for non-mova insn. */`
115			`switch (OP_SIZE (q->how))`
116			`{`
117			`default: break;`
118			`case SW:`
119			`cst = 2;`
120			`break;`
121			`case SL:`
122			`cst = 4;`
123			`break;`
124			`}`
125			`}`
126			`}`
127			`break;`
128			`case L_8:`
129			`*len = 8;`
130			`*cst = data[0];`
131			`break;`
132			`case L_16:`
133			`case L_16U:`
134			`*len = 16;`
135			`*cst = (data[0] << 8) + data [1];`
136			`#if 0`
137			`if ((looking_for & SIZE) == L_16)`
138			`cst = (short) cst; /* Sign extend. */`
139			`#endif`
140			`break;`
141			`case L_32:`
142			`*len = 32;`
143			`*cst = (data[0] << 24) + (data[1] << 16) + (data[2] << 8) + data[3];`
144			`break;`
145			`default:`
146			`*len = 0;`
147			`*cst = 0;`
148			`fprintf (stream, "DISP bad size\n");`
149			`break;`
150			`}`
151			`}`
152
153			`static const char *regnames[] =`
154			`{`
155			`"r0h", "r1h", "r2h", "r3h", "r4h", "r5h", "r6h", "r7h",`
156			`"r0l", "r1l", "r2l", "r3l", "r4l", "r5l", "r6l", "r7l"`
157			`};`
158			`static const char *wregnames[] =`
159			`{`
160			`"r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",`
161			`"e0", "e1", "e2", "e3", "e4", "e5", "e6", "e7"`
162			`};`
163			`static const char *lregnames[] =`
164			`{`
165			`"er0", "er1", "er2", "er3", "er4", "er5", "er6", "er7",`
166			`"er0", "er1", "er2", "er3", "er4", "er5", "er6", "er7"`
167			`};`
168			`static const char *cregnames[] =`
169			`{`
170			`"ccr", "exr", "mach", "macl", "", "", "vbr", "sbr"`
171			`};`
172
173			`static void`
174			`print_one_arg (disassemble_info *info,`
175			`bfd_vma addr,`
176			`op_type x,`
177			`int cst,`
178			`int cstlen,`
179			`int rdisp_n,`
180			`int rn,`
181			`const char **pregnames,`
182			`int len)`
183			`{`
184			`void * stream = info->stream;`
185			`fprintf_ftype outfn = info->fprintf_func;`
186
187			`if ((x & SIZE) == L_3 \|\| (x & SIZE) == L_3NZ)`
188			`outfn (stream, "#0x%x", (unsigned) cst);`
189			`else if ((x & MODE) == IMM)`
190			`outfn (stream, "#0x%x", (unsigned) cst);`
191			`else if ((x & MODE) == DBIT \|\| (x & MODE) == KBIT)`
192			`outfn (stream, "#%d", (unsigned) cst);`
193			`else if ((x & MODE) == CONST_2)`
194			`outfn (stream, "#2");`
195			`else if ((x & MODE) == CONST_4)`
196			`outfn (stream, "#4");`
197			`else if ((x & MODE) == CONST_8)`
198			`outfn (stream, "#8");`
199			`else if ((x & MODE) == CONST_16)`
200			`outfn (stream, "#16");`
201			`else if ((x & MODE) == REG)`
202			`{`
203			`switch (x & SIZE)`
204			`{`
205			`case L_8:`
206			`outfn (stream, "%s", regnames[rn]);`
207			`break;`
208			`case L_16:`
209			`case L_16U:`
210			`outfn (stream, "%s", wregnames[rn]);`
211			`break;`
212			`case L_P:`
213			`case L_32:`
214			`outfn (stream, "%s", lregnames[rn]);`
215			`break;`
216			`}`
217			`}`
218			`else if ((x & MODE) == LOWREG)`
219			`{`
220			`switch (x & SIZE)`
221			`{`
222			`case L_8:`
223			`/* Always take low half of reg. */`
224			`outfn (stream, "%s.b", regnames[rn < 8 ? rn + 8 : rn]);`
225			`break;`
226			`case L_16:`
227			`case L_16U:`
228			`/* Always take low half of reg. */`
229			`outfn (stream, "%s.w", wregnames[rn < 8 ? rn : rn - 8]);`
230			`break;`
231			`case L_P:`
232			`case L_32:`
233			`outfn (stream, "%s.l", lregnames[rn]);`
234			`break;`
235			`}`
236			`}`
237			`else if ((x & MODE) == POSTINC)`
238			`outfn (stream, "@%s+", pregnames[rn]);`
239
240			`else if ((x & MODE) == POSTDEC)`
241			`outfn (stream, "@%s-", pregnames[rn]);`
242
243			`else if ((x & MODE) == PREINC)`
244			`outfn (stream, "@+%s", pregnames[rn]);`
245
246			`else if ((x & MODE) == PREDEC)`
247			`outfn (stream, "@-%s", pregnames[rn]);`
248
249			`else if ((x & MODE) == IND)`
250			`outfn (stream, "@%s", pregnames[rn]);`
251
252			`else if ((x & MODE) == ABS \|\| (x & ABSJMP))`
253			`outfn (stream, "@0x%x:%d", (unsigned) cst, cstlen);`
254
255			`else if ((x & MODE) == MEMIND)`
256			`outfn (stream, "@@%d (0x%x)", cst, cst);`
257
258			`else if ((x & MODE) == VECIND)`
259			`{`
260			`/* FIXME Multiplier should be 2 or 4, depending on processor mode,`
261			`by which is meant "normal" vs. "middle", "advanced", "maximum". */`
262
263			`int offset = (cst + 0x80) * 4;`
264			`outfn (stream, "@@%d (0x%x)", offset, offset);`
265			`}`
266			`else if ((x & MODE) == PCREL)`
267			`{`
268			`if ((x & SIZE) == L_16 \|\|`
269			`(x & SIZE) == L_16U)`
270			`{`
271			`outfn (stream, ".%s%d (0x%lx)",`
272			`(short) cst > 0 ? "+" : "",`
273			`(short) cst,`
274			`(long)(addr + (short) cst + len));`
275			`}`
276			`else`
277			`{`
278			`outfn (stream, ".%s%d (0x%lx)",`
279			`(char) cst > 0 ? "+" : "",`
280			`(char) cst,`
281			`(long)(addr + (char) cst + len));`
282			`}`
283			`}`
284			`else if ((x & MODE) == DISP)`
285			`outfn (stream, "@(0x%x:%d,%s)", cst, cstlen, pregnames[rdisp_n]);`
286
287			`else if ((x & MODE) == INDEXB)`
288			`/* Always take low half of reg. */`
289			`outfn (stream, "@(0x%x:%d,%s.b)", cst, cstlen,`
290			`regnames[rdisp_n < 8 ? rdisp_n + 8 : rdisp_n]);`
291
292			`else if ((x & MODE) == INDEXW)`
293			`/* Always take low half of reg. */`
294			`outfn (stream, "@(0x%x:%d,%s.w)", cst, cstlen,`
295			`wregnames[rdisp_n < 8 ? rdisp_n : rdisp_n - 8]);`
296
297			`else if ((x & MODE) == INDEXL)`
298			`outfn (stream, "@(0x%x:%d,%s.l)", cst, cstlen, lregnames[rdisp_n]);`
299
300			`else if (x & CTRL)`
301			`outfn (stream, cregnames[rn]);`
302
303			`else if ((x & MODE) == CCR)`
304			`outfn (stream, "ccr");`
305
306			`else if ((x & MODE) == EXR)`
307			`outfn (stream, "exr");`
308
309			`else if ((x & MODE) == MACREG)`
310			`outfn (stream, "mac%c", cst ? 'l' : 'h');`
311
312			`else`
313			`/* xgettext:c-format */`
314			`outfn (stream, _("Hmmmm 0x%x"), x);`
315			`}`
316
317			`static unsigned int`
318			`bfd_h8_disassemble (bfd_vma addr, disassemble_info *info, int mach)`
319			`{`
320			`/* Find the first entry in the table for this opcode. */`
321			`int regno[3] = { 0, 0, 0 };`
322			`int dispregno[3] = { 0, 0, 0 };`
323			`int cst[3] = { 0, 0, 0 };`
324			`int cstlen[3] = { 0, 0, 0 };`
325			`static bfd_boolean init = 0;`
326			`const struct h8_instruction *qi;`
327			`char const **pregnames = mach != 0 ? lregnames : wregnames;`
328			`int status;`
329			`unsigned int l;`
330			`unsigned char data[MAX_CODE_NIBBLES];`
331			`void *stream = info->stream;`
332			`fprintf_ftype outfn = info->fprintf_func;`
333
334			`if (!init)`
335			`{`
336			`bfd_h8_disassemble_init ();`
337			`init = 1;`
338			`}`
339
340			`status = info->read_memory_func (addr, data, 2, info);`
341			`if (status != 0)`
342			`{`
343			`info->memory_error_func (status, addr, info);`
344			`return -1;`
345			`}`
346
347			`for (l = 2; status == 0 && l < sizeof (data) / 2; l += 2)`
348			`status = info->read_memory_func (addr + l, data + l, 2, info);`
349
350			`/* Find the exact opcode/arg combo. */`
351			`for (qi = h8_instructions; qi->opcode->name; qi++)`
352			`{`
353			`const struct h8_opcode *q = qi->opcode;`
354			`const op_type *nib = q->data.nib;`
355			`unsigned int len = 0;`
356
357			`while (1)`
358			`{`
359			`op_type looking_for = *nib;`
360			`int thisnib = data[len / 2];`
361			`int opnr;`
362
363			`thisnib = (len & 1) ? (thisnib & 0xf) : ((thisnib / 16) & 0xf);`
364			`opnr = ((looking_for & OP3) == OP3 ? 2`
365			`: (looking_for & DST) == DST ? 1 : 0);`
366
367			`if (looking_for < 16 && looking_for >= 0)`
368			`{`
369			`if (looking_for != thisnib)`
370			`goto fail;`
371			`}`
372			`else`
373			`{`
374			`if ((int) looking_for & (int) B31)`
375			`{`
376			`if (!((thisnib & 0x8) != 0))`
377			`goto fail;`
378
379			`looking_for = (op_type) ((int) looking_for & ~(int) B31);`
380			`thisnib &= 0x7;`
381			`}`
382			`else if ((int) looking_for & (int) B30)`
383			`{`
384			`if (!((thisnib & 0x8) == 0))`
385			`goto fail;`
386
387			`looking_for = (op_type) ((int) looking_for & ~(int) B30);`
388			`}`
389
390			`if ((int) looking_for & (int) B21)`
391			`{`
392			`if (!((thisnib & 0x4) != 0))`
393			`goto fail;`
394
395			`looking_for = (op_type) ((int) looking_for & ~(int) B21);`
396			`thisnib &= 0xb;`
397			`}`
398			`else if ((int) looking_for & (int) B20)`
399			`{`
400			`if (!((thisnib & 0x4) == 0))`
401			`goto fail;`
402
403			`looking_for = (op_type) ((int) looking_for & ~(int) B20);`
404			`}`
405			`if ((int) looking_for & (int) B11)`
406			`{`
407			`if (!((thisnib & 0x2) != 0))`
408			`goto fail;`
409
410			`looking_for = (op_type) ((int) looking_for & ~(int) B11);`
411			`thisnib &= 0xd;`
412			`}`
413			`else if ((int) looking_for & (int) B10)`
414			`{`
415			`if (!((thisnib & 0x2) == 0))`
416			`goto fail;`
417
418			`looking_for = (op_type) ((int) looking_for & ~(int) B10);`
419			`}`
420
421			`if ((int) looking_for & (int) B01)`
422			`{`
423			`if (!((thisnib & 0x1) != 0))`
424			`goto fail;`
425
426			`looking_for = (op_type) ((int) looking_for & ~(int) B01);`
427			`thisnib &= 0xe;`
428			`}`
429			`else if ((int) looking_for & (int) B00)`
430			`{`
431			`if (!((thisnib & 0x1) == 0))`
432			`goto fail;`
433
434			`looking_for = (op_type) ((int) looking_for & ~(int) B00);`
435			`}`
436
437			`if (looking_for & IGNORE)`
438			`{`
439			`/* Hitachi has declared that IGNORE must be zero. */`
440			`if (thisnib != 0)`
441			`goto fail;`
442			`}`
443			`else if ((looking_for & MODE) == DATA)`
444			`{`
445			`; /* Skip embedded data. */`
446			`}`
447			`else if ((looking_for & MODE) == DBIT)`
448			`{`
449			`/* Exclude adds/subs by looking at bit 0 and 2, and`
450			`make sure the operand size, either w or l,`
451			`matches by looking at bit 1. */`
452			`if ((looking_for & 7) != (thisnib & 7))`
453			`goto fail;`
454
455			`cst[opnr] = (thisnib & 0x8) ? 2 : 1;`
456			`}`
457			`else if ((looking_for & MODE) == DISP`
458			`\|\| (looking_for & MODE) == ABS`
459			`\|\| (looking_for & MODE) == PCREL`
460			`\|\| (looking_for & MODE) == INDEXB`
461			`\|\| (looking_for & MODE) == INDEXW`
462			`\|\| (looking_for & MODE) == INDEXL)`
463			`{`
464			`extract_immediate (stream, looking_for, thisnib,`
465			`data + len / 2, cst + opnr,`
466			`cstlen + opnr, q);`
467			`/* Even address == bra, odd == bra/s. */`
468			`if (q->how == O (O_BRAS, SB))`
469			`cst[opnr] -= 1;`
470			`}`
471			`else if ((looking_for & MODE) == REG`
472			`\|\| (looking_for & MODE) == LOWREG`
473			`\|\| (looking_for & MODE) == IND`
474			`\|\| (looking_for & MODE) == PREINC`
475			`\|\| (looking_for & MODE) == POSTINC`
476			`\|\| (looking_for & MODE) == PREDEC`
477			`\|\| (looking_for & MODE) == POSTDEC)`
478			`{`
479			`regno[opnr] = thisnib;`
480			`}`
481			`else if (looking_for & CTRL) /* Control Register. */`
482			`{`
483			`thisnib &= 7;`
484			`if (((looking_for & MODE) == CCR && (thisnib != C_CCR))`
485			`\|\| ((looking_for & MODE) == EXR && (thisnib != C_EXR))`
486			`\|\| ((looking_for & MODE) == MACH && (thisnib != C_MACH))`
487			`\|\| ((looking_for & MODE) == MACL && (thisnib != C_MACL))`
488			`\|\| ((looking_for & MODE) == VBR && (thisnib != C_VBR))`
489			`\|\| ((looking_for & MODE) == SBR && (thisnib != C_SBR)))`
490			`goto fail;`
491			`if (((looking_for & MODE) == CCR_EXR`
492			`&& (thisnib != C_CCR && thisnib != C_EXR))`
493			`\|\| ((looking_for & MODE) == VBR_SBR`
494			`&& (thisnib != C_VBR && thisnib != C_SBR))`
495			`\|\| ((looking_for & MODE) == MACREG`
496			`&& (thisnib != C_MACH && thisnib != C_MACL)))`
497			`goto fail;`
498			`if (((looking_for & MODE) == CC_EX_VB_SB`
499			`&& (thisnib != C_CCR && thisnib != C_EXR`
500			`&& thisnib != C_VBR && thisnib != C_SBR)))`
501			`goto fail;`
502
503			`regno[opnr] = thisnib;`
504			`}`
505			`else if ((looking_for & SIZE) == L_5)`
506			`{`
507			`cst[opnr] = data[len / 2] & 31;`
508			`cstlen[opnr] = 5;`
509			`}`
510			`else if ((looking_for & SIZE) == L_4)`
511			`{`
512			`cst[opnr] = thisnib;`
513			`cstlen[opnr] = 4;`
514			`}`
515			`else if ((looking_for & SIZE) == L_16`
516			`\|\| (looking_for & SIZE) == L_16U)`
517			`{`
518			`cst[opnr] = (data[len / 2]) * 256 + data[(len + 2) / 2];`
519			`cstlen[opnr] = 16;`
520			`}`
521			`else if ((looking_for & MODE) == MEMIND)`
522			`{`
523			`cst[opnr] = data[1];`
524			`}`
525			`else if ((looking_for & MODE) == VECIND)`
526			`{`
527			`cst[opnr] = data[1] & 0x7f;`
528			`}`
529			`else if ((looking_for & SIZE) == L_32)`
530			`{`
531			`int i = len / 2;`
532
533			`cst[opnr] = ((data[i] << 24)`
534			`\| (data[i + 1] << 16)`
535			`\| (data[i + 2] << 8)`
536			`\| (data[i + 3]));`
537
538			`cstlen[opnr] = 32;`
539			`}`
540			`else if ((looking_for & SIZE) == L_24)`
541			`{`
542			`int i = len / 2;`
543
544			`cst[opnr] =`
545			`(data[i] << 16) \| (data[i + 1] << 8) \| (data[i + 2]);`
546			`cstlen[opnr] = 24;`
547			`}`
548			`else if (looking_for & IGNORE)`
549			`{`
550			`;`
551			`}`
552			`else if (looking_for & DISPREG)`
553			`{`
554			`dispregno[opnr] = thisnib & 7;`
555			`}`
556			`else if ((looking_for & MODE) == KBIT)`
557			`{`
558			`switch (thisnib)`
559			`{`
560			`case 9:`
561			`cst[opnr] = 4;`
562			`break;`
563			`case 8:`
564			`cst[opnr] = 2;`
565			`break;`
566			`case 0:`
567			`cst[opnr] = 1;`
568			`break;`
569			`default:`
570			`goto fail;`
571			`}`
572			`}`
573			`else if ((looking_for & SIZE) == L_8)`
574			`{`
575			`cstlen[opnr] = 8;`
576			`cst[opnr] = data[len / 2];`
577			`}`
578			`else if ((looking_for & SIZE) == L_3`
579			`\|\| (looking_for & SIZE) == L_3NZ)`
580			`{`
581			`cst[opnr] = thisnib & 0x7;`
582			`if (cst[opnr] == 0 && (looking_for & SIZE) == L_3NZ)`
583			`goto fail;`
584			`}`
585			`else if ((looking_for & SIZE) == L_2)`
586			`{`
587			`cstlen[opnr] = 2;`
588			`cst[opnr] = thisnib & 0x3;`
589			`}`
590			`else if ((looking_for & MODE) == MACREG)`
591			`{`
592			`cst[opnr] = (thisnib == 3);`
593			`}`
594			`else if (looking_for == (op_type) E)`
595			`{`
596			`outfn (stream, "%s\t", q->name);`
597
598			`/* Gross. Disgusting. */`
599			`if (strcmp (q->name, "ldm.l") == 0)`
600			`{`
601			`int count, high;`
602
603			`count = (data[1] / 16) & 0x3;`
604			`high = regno[1];`
605
606			`outfn (stream, "@sp+,er%d-er%d", high - count, high);`
607			`return qi->length;`
608			`}`
609
610			`if (strcmp (q->name, "stm.l") == 0)`
611			`{`
612			`int count, low;`
613
614			`count = (data[1] / 16) & 0x3;`
615			`low = regno[0];`
616
617			`outfn (stream, "er%d-er%d,@-sp", low, low + count);`
618			`return qi->length;`
619			`}`
620			`if (strcmp (q->name, "rte/l") == 0`
621			`\|\| strcmp (q->name, "rts/l") == 0)`
622			`{`
623			`if (regno[0] == 0)`
624			`outfn (stream, "er%d", regno[1]);`
625			`else`
626			`outfn (stream, "er%d-er%d", regno[1] - regno[0],`
627			`regno[1]);`
628			`return qi->length;`
629			`}`
630			`if (CONST_STRNEQ (q->name, "mova"))`
631			`{`
632			`const op_type *args = q->args.nib;`
633
634			`if (args[1] == (op_type) E)`
635			`{`
636			`/* Short form. */`
637			`print_one_arg (info, addr, args[0], cst[0],`
638			`cstlen[0], dispregno[0], regno[0],`
639			`pregnames, qi->length);`
640			`outfn (stream, ",er%d", dispregno[0]);`
641			`}`
642			`else`
643			`{`
644			`outfn (stream, "@(0x%x:%d,", cst[0], cstlen[0]);`
645			`print_one_arg (info, addr, args[1], cst[1],`
646			`cstlen[1], dispregno[1], regno[1],`
647			`pregnames, qi->length);`
648			`outfn (stream, ".%c),",`
649			`(args[0] & MODE) == INDEXB ? 'b' : 'w');`
650			`print_one_arg (info, addr, args[2], cst[2],`
651			`cstlen[2], dispregno[2], regno[2],`
652			`pregnames, qi->length);`
653			`}`
654			`return qi->length;`
655			`}`
656			`/* Fill in the args. */`
657			`{`
658			`const op_type *args = q->args.nib;`
659			`int hadone = 0;`
660			`int nargs;`
661
662			`/* Special case handling for the adds and subs instructions`
663			`since in H8 mode thay can only take the r0-r7 registers`
664			`but in other (higher) modes they can take the er0-er7`
665			`registers as well. */`
666			`if (strcmp (qi->opcode->name, "adds") == 0`
667			`\|\| strcmp (qi->opcode->name, "subs") == 0)`
668			`{`
669			`outfn (stream, "#%d,%s", cst[0], pregnames[regno[1] & 0x7]);`
670			`return qi->length;`
671			`}`
672
673			`for (nargs = 0;`
674			`nargs < 3 && args[nargs] != (op_type) E;`
675			`nargs++)`
676			`{`
677			`int x = args[nargs];`
678
679			`if (hadone)`
680			`outfn (stream, ",");`
681
682			`print_one_arg (info, addr, x,`
683			`cst[nargs], cstlen[nargs],`
684			`dispregno[nargs], regno[nargs],`
685			`pregnames, qi->length);`
686
687			`hadone = 1;`
688			`}`
689			`}`
690
691			`return qi->length;`
692			`}`
693			`else`
694			`/* xgettext:c-format */`
695			`outfn (stream, _("Don't understand 0x%x \n"), looking_for);`
696			`}`
697
698			`len++;`
699			`nib++;`
700			`}`
701
702			`fail:`
703			`;`
704			`}`
705
706			`/* Fell off the end. */`
707			`outfn (stream, ".word\tH'%x,H'%x", data[0], data[1]);`
708			`return 2;`
709			`}`
710
711			`int`
712			`print_insn_h8300 (bfd_vma addr, disassemble_info *info)`
713			`{`
714			`return bfd_h8_disassemble (addr, info, 0);`
715			`}`
716
717			`int`
718			`print_insn_h8300h (bfd_vma addr, disassemble_info *info)`
719			`{`
720			`return bfd_h8_disassemble (addr, info, 1);`
721			`}`
722
723			`int`
724			`print_insn_h8300s (bfd_vma addr, disassemble_info *info)`
725			`{`
726			`return bfd_h8_disassemble (addr, info, 2);`
727			`}`