opcodes/h8300-dis.c

   1 /* Disassemble h8300 instructions.
   2    Copyright 1993, 1994, 1996, 1998, 2000, 2001, 2002, 2003, 2004
   3    Free Software Foundation, Inc.
   4
   5    This program is free software; you can redistribute it and/or modify
   6    it under the terms of the GNU General Public License as published by
   7    the Free Software Foundation; either version 2 of the License, or
   8    (at your option) any later version.
   9
  10    This program is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13    GNU General Public License for more details.
  14
  15    You should have received a copy of the GNU General Public License
  16    along with this program; if not, write to the Free Software
  17    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
  18
  19 #define DEFINE_TABLE
  20
  21 #include "sysdep.h"
  22 #define h8_opcodes h8ops
  23 #include "opcode/h8300.h"
  24 #include "dis-asm.h"
  25 #include "opintl.h"
  26 #include "libiberty.h"
  27
  28 struct h8_instruction
  29 {
  30   int length;
  31   const struct h8_opcode *opcode;
  32 };
  33
  34 struct h8_instruction *h8_instructions;
  35
  36 static void bfd_h8_disassemble_init PARAMS ((void));
  37 static void print_one_arg PARAMS ((disassemble_info *, bfd_vma, op_type,
  38                                    int, int, int, int, const char **, int));
  39 static unsigned int bfd_h8_disassemble PARAMS ((bfd_vma,
  40                                                 disassemble_info *,
  41                                                 int));
  42 static void extract_immediate PARAMS ((FILE *,
  43                                        op_type, int,
  44                                        unsigned char *,
  45                                        int *, int *,
  46                                        const struct h8_opcode *));
  47
  48 /* Run through the opcodes and sort them into order to make them easy
  49    to disassemble.  */
  50
  51 static void
  52 bfd_h8_disassemble_init ()
  53 {
  54   unsigned int i;
  55   unsigned int nopcodes;
  56   const struct h8_opcode *p;
  57   struct h8_instruction *pi;
  58
  59   nopcodes = sizeof (h8_opcodes) / sizeof (struct h8_opcode);
  60
  61   h8_instructions = (struct h8_instruction *)
  62     xmalloc (nopcodes * sizeof (struct h8_instruction));
  63
  64   for (p = h8_opcodes, pi = h8_instructions; p->name; p++, pi++)
  65     {
  66       int n1 = 0;
  67       int n2 = 0;
  68
  69       if ((int) p->data.nib[0] < 16)
  70         n1 = (int) p->data.nib[0];
  71       else
  72         n1 = 0;
  73
  74       if ((int) p->data.nib[1] < 16)
  75         n2 = (int) p->data.nib[1];
  76       else
  77         n2 = 0;
  78
  79       /* Just make sure there are an even number of nibbles in it, and
  80          that the count is the same as the length.  */
  81       for (i = 0; p->data.nib[i] != (op_type) E; i++)
  82         ;
  83
  84       if (i & 1)
  85         {
  86           fprintf (stderr, "Internal error, h8_disassemble_init.\n");
  87           abort ();
  88         }
  89
  90       pi->length = i / 2;
  91       pi->opcode = p;
  92     }
  93
  94   /* Add entry for the NULL vector terminator.  */
  95   pi->length = 0;
  96   pi->opcode = p;
  97 }
  98
  99 static void
 100 extract_immediate (stream, looking_for, thisnib, data, cst, len, q)
 101      FILE *stream;
 102      op_type looking_for;
 103      int thisnib;
 104      unsigned char *data;
 105      int *cst, *len;
 106      const struct h8_opcode *q;
 107 {
 108   switch (looking_for & SIZE)
 109     {
 110     case L_2:
 111       *len = 2;
 112       *cst = thisnib & 3;
 113
 114       /* DISP2 special treatment.  */
 115       if ((looking_for & MODE) == DISP)
 116         {
 117           if (OP_KIND (q->how) == O_MOVAB ||
 118               OP_KIND (q->how) == O_MOVAW ||
 119               OP_KIND (q->how) == O_MOVAL)
 120             {
 121               /* Handling for mova insn.  */
 122               switch (q->args.nib[0] & MODE) {
 123               case INDEXB:
 124               default:
 125                 break;
 126               case INDEXW:
 127                 *cst *= 2;
 128                 break;
 129               case INDEXL:
 130                 *cst *= 4;
 131                 break;
 132               }
 133             }
 134           else
 135             {
 136               /* Handling for non-mova insn.  */
 137               switch (OP_SIZE (q->how)) {
 138               default: break;
 139               case SW:
 140                 *cst *= 2;
 141                 break;
 142               case SL:
 143                 *cst *= 4;
 144                 break;
 145               }
 146             }
 147         }
 148       break;
 149     case L_8:
 150       *len = 8;
 151       *cst = data[0];
 152       break;
 153     case L_16:
 154     case L_16U:
 155       *len = 16;
 156       *cst = (data[0] << 8) + data [1];
 157 #if 0
 158       if ((looking_for & SIZE) == L_16)
 159         *cst = (short) *cst;    /* sign extend */
 160 #endif
 161       break;
 162     case L_32:
 163       *len = 32;
 164       *cst = (data[0] << 24) + (data[1] << 16) + (data[2] << 8) + data[3];
 165       break;
 166     default:
 167       *len = 0;
 168       *cst = 0;
 169       fprintf (stream, "DISP bad size\n");
 170       break;
 171     }
 172 }
 173
 174 static const char *regnames[] =
 175 {
 176   "r0h", "r1h", "r2h", "r3h", "r4h", "r5h", "r6h", "r7h",
 177   "r0l", "r1l", "r2l", "r3l", "r4l", "r5l", "r6l", "r7l"
 178 };
 179 static const char *wregnames[] =
 180 {
 181   "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",
 182   "e0", "e1", "e2", "e3", "e4", "e5", "e6", "e7"
 183 };
 184 static const char *lregnames[] =
 185 {
 186   "er0", "er1", "er2", "er3", "er4", "er5", "er6", "er7",
 187   "er0", "er1", "er2", "er3", "er4", "er5", "er6", "er7"
 188 };
 189 static const char *cregnames[] =
 190 {
 191   "ccr", "exr", "mach", "macl", "", "", "vbr", "sbr"
 192 };
 193
 194 static void
 195 print_one_arg (info, addr, x, cst, cstlen, rdisp_n, rn, pregnames, len)
 196      disassemble_info *info;
 197      bfd_vma addr;
 198      op_type x;
 199      int cst, cstlen, rdisp_n, rn;
 200      const char **pregnames;
 201      int len;
 202 {
 203   void *stream = info->stream;
 204   fprintf_ftype outfn = info->fprintf_func;
 205
 206   if ((x & SIZE) == L_3 ||
 207       (x & SIZE) == L_3NZ)
 208     {
 209       outfn (stream, "#0x%x", (unsigned) cst);
 210     }
 211   else if ((x & MODE) == IMM)
 212     {
 213       outfn (stream, "#0x%x", (unsigned) cst);
 214     }
 215   else if ((x & MODE) == DBIT  ||
 216            (x & MODE) == KBIT)
 217     {
 218       outfn (stream, "#%d", (unsigned) cst);
 219     }
 220   else if ((x & MODE) == CONST_2)
 221     outfn (stream, "#2");
 222   else if ((x & MODE) == CONST_4)
 223     outfn (stream, "#4");
 224   else if ((x & MODE) == CONST_8)
 225     outfn (stream, "#8");
 226   else if ((x & MODE) == CONST_16)
 227     outfn (stream, "#16");
 228   else if ((x & MODE) == REG)
 229     {
 230       switch (x & SIZE)
 231         {
 232         case L_8:
 233           outfn (stream, "%s", regnames[rn]);
 234           break;
 235         case L_16:
 236         case L_16U:
 237           outfn (stream, "%s", wregnames[rn]);
 238           break;
 239         case L_P:
 240         case L_32:
 241           outfn (stream, "%s", lregnames[rn]);
 242           break;
 243         }
 244     }
 245   else if ((x & MODE) == LOWREG)
 246     {
 247       switch (x & SIZE)
 248         {
 249         case L_8:
 250           /* Always take low half of reg.  */
 251           outfn (stream, "%s.b", regnames[rn < 8 ? rn + 8 : rn]);
 252           break;
 253         case L_16:
 254         case L_16U:
 255           /* Always take low half of reg.  */
 256           outfn (stream, "%s.w", wregnames[rn < 8 ? rn : rn - 8]);
 257           break;
 258         case L_P:
 259         case L_32:
 260           outfn (stream, "%s.l", lregnames[rn]);
 261           break;
 262         }
 263     }
 264   else if ((x & MODE) == POSTINC)
 265     {
 266       outfn (stream, "@%s+", pregnames[rn]);
 267     }
 268   else if ((x & MODE) == POSTDEC)
 269     {
 270       outfn (stream, "@%s-", pregnames[rn]);
 271     }
 272   else if ((x & MODE) == PREINC)
 273     {
 274       outfn (stream, "@+%s", pregnames[rn]);
 275     }
 276   else if ((x & MODE) == PREDEC)
 277     {
 278       outfn (stream, "@-%s", pregnames[rn]);
 279     }
 280   else if ((x & MODE) == IND)
 281     {
 282       outfn (stream, "@%s", pregnames[rn]);
 283     }
 284   else if ((x & MODE) == ABS || (x & ABSJMP))
 285     {
 286       outfn (stream, "@0x%x:%d", (unsigned) cst, cstlen);
 287     }
 288   else if ((x & MODE) == MEMIND)
 289     {
 290       outfn (stream, "@@%d (0x%x)", cst, cst);
 291     }
 292   else if ((x & MODE) == VECIND)
 293     {
 294       /* FIXME Multiplier should be 2 or 4, depending on processor mode,
 295          by which is meant "normal" vs. "middle", "advanced", "maximum".  */
 296
 297       int offset = (cst + 0x80) * 4;
 298       outfn (stream, "@@%d (0x%x)", offset, offset);
 299     }
 300   else if ((x & MODE) == PCREL)
 301     {
 302       if ((x & SIZE) == L_16 ||
 303           (x & SIZE) == L_16U)
 304         {
 305           outfn (stream, ".%s%d (0x%x)",
 306                    (short) cst > 0 ? "+" : "",
 307                    (short) cst,
 308                    addr + (short) cst + len);
 309         }
 310       else
 311         {
 312           outfn (stream, ".%s%d (0x%x)",
 313                    (char) cst > 0 ? "+" : "",
 314                    (char) cst,
 315                    addr + (char) cst + len);
 316         }
 317     }
 318   else if ((x & MODE) == DISP)
 319     {
 320       outfn (stream, "@(0x%x:%d,%s)", cst, cstlen,
 321                pregnames[rdisp_n]);
 322     }
 323   else if ((x & MODE) == INDEXB)
 324     {
 325       /* Always take low half of reg.  */
 326       outfn (stream, "@(0x%x:%d,%s.b)", cst, cstlen,
 327              regnames[rdisp_n < 8 ? rdisp_n + 8 : rdisp_n]);
 328     }
 329   else if ((x & MODE) == INDEXW)
 330     {
 331       /* Always take low half of reg.  */
 332       outfn (stream, "@(0x%x:%d,%s.w)", cst, cstlen,
 333                wregnames[rdisp_n < 8 ? rdisp_n : rdisp_n - 8]);
 334     }
 335   else if ((x & MODE) == INDEXL)
 336     {
 337       outfn (stream, "@(0x%x:%d,%s.l)", cst, cstlen,
 338                lregnames[rdisp_n]);
 339     }
 340   else if (x & CTRL)
 341     {
 342       outfn (stream, cregnames[rn]);
 343     }
 344   else if ((x & MODE) == CCR)
 345     {
 346       outfn (stream, "ccr");
 347     }
 348   else if ((x & MODE) == EXR)
 349     {
 350       outfn (stream, "exr");
 351     }
 352   else if ((x & MODE) == MACREG)
 353     {
 354       outfn (stream, "mac%c", cst ? 'l' : 'h');
 355     }
 356   else
 357     /* xgettext:c-format */
 358     outfn (stream, _("Hmmmm 0x%x"), x);
 359 }
 360
 361 static unsigned int
 362 bfd_h8_disassemble (addr, info, mach)
 363      bfd_vma addr;
 364      disassemble_info *info;
 365      int mach;
 366 {
 367   /* Find the first entry in the table for this opcode.  */
 368   int regno[3] = { 0, 0, 0 };
 369   int dispregno[3] = { 0, 0, 0 };
 370   int cst[3] = { 0, 0, 0 };
 371   int cstlen[3] = { 0, 0, 0 };
 372   static bfd_boolean init = 0;
 373   const struct h8_instruction *qi;
 374   char const **pregnames = mach != 0 ? lregnames : wregnames;
 375   int status;
 376   unsigned int l;
 377   unsigned char data[MAX_CODE_NIBBLES];
 378   void *stream = info->stream;
 379   fprintf_ftype outfn = info->fprintf_func;
 380
 381   if (!init)
 382     {
 383       bfd_h8_disassemble_init ();
 384       init = 1;
 385     }
 386
 387   status = info->read_memory_func (addr, data, 2, info);
 388   if (status != 0)
 389     {
 390       info->memory_error_func (status, addr, info);
 391       return -1;
 392     }
 393
 394   for (l = 2; status == 0 && l < sizeof (data) / 2; l += 2)
 395     status = info->read_memory_func (addr + l, data + l, 2, info);
 396
 397   /* Find the exact opcode/arg combo.  */
 398   for (qi = h8_instructions; qi->opcode->name; qi++)
 399     {
 400       const struct h8_opcode *q = qi->opcode;
 401       op_type *nib = q->data.nib;
 402       unsigned int len = 0;
 403
 404       while (1)
 405         {
 406           op_type looking_for = *nib;
 407           int thisnib = data[len / 2];
 408           int opnr;
 409
 410           thisnib = (len & 1) ? (thisnib & 0xf) : ((thisnib / 16) & 0xf);
 411           opnr = ((looking_for & OP3) == OP3 ? 2
 412                   : (looking_for & DST) == DST ? 1 : 0);
 413
 414           if (looking_for < 16 && looking_for >= 0)
 415             {
 416               if (looking_for != thisnib)
 417                 goto fail;
 418             }
 419           else
 420             {
 421               if ((int) looking_for & (int) B31)
 422                 {
 423                   if (!((thisnib & 0x8) != 0))
 424                     goto fail;
 425
 426                   looking_for = (op_type) ((int) looking_for & ~(int) B31);
 427                   thisnib &= 0x7;
 428                 }
 429               else if ((int) looking_for & (int) B30)
 430                 {
 431                   if (!((thisnib & 0x8) == 0))
 432                     goto fail;
 433
 434                   looking_for = (op_type) ((int) looking_for & ~(int) B30);
 435                 }
 436
 437               if ((int) looking_for & (int) B21)
 438                 {
 439                   if (!((thisnib & 0x4) != 0))
 440                     goto fail;
 441
 442                   looking_for = (op_type) ((int) looking_for & ~(int) B21);
 443                   thisnib &= 0xb;
 444                 }
 445               else if ((int) looking_for & (int) B20)
 446                 {
 447                   if (!((thisnib & 0x4) == 0))
 448                     goto fail;
 449
 450                   looking_for = (op_type) ((int) looking_for & ~(int) B20);
 451                 }
 452               if ((int) looking_for & (int) B11)
 453                 {
 454                   if (!((thisnib & 0x2) != 0))
 455                     goto fail;
 456
 457                   looking_for = (op_type) ((int) looking_for & ~(int) B11);
 458                   thisnib &= 0xd;
 459                 }
 460               else if ((int) looking_for & (int) B10)
 461                 {
 462                   if (!((thisnib & 0x2) == 0))
 463                     goto fail;
 464
 465                   looking_for = (op_type) ((int) looking_for & ~(int) B10);
 466                 }
 467
 468               if ((int) looking_for & (int) B01)
 469                 {
 470                   if (!((thisnib & 0x1) != 0))
 471                     goto fail;
 472
 473                   looking_for = (op_type) ((int) looking_for & ~(int) B01);
 474                   thisnib &= 0xe;
 475                 }
 476               else if ((int) looking_for & (int) B00)
 477                 {
 478                   if (!((thisnib & 0x1) == 0))
 479                     goto fail;
 480
 481                   looking_for = (op_type) ((int) looking_for & ~(int) B00);
 482                 }
 483
 484               if (looking_for & IGNORE)
 485                 {
 486                   /* Hitachi has declared that IGNORE must be zero.  */
 487                   if (thisnib != 0)
 488                     goto fail;
 489                 }
 490               else if ((looking_for & MODE) == DATA)
 491                 {
 492                   ;                     /* Skip embedded data.  */
 493                 }
 494               else if ((looking_for & MODE) == DBIT)
 495                 {
 496                   /* Exclude adds/subs by looking at bit 0 and 2, and
 497                      make sure the operand size, either w or l,
 498                      matches by looking at bit 1.  */
 499                   if ((looking_for & 7) != (thisnib & 7))
 500                     goto fail;
 501
 502                   cst[opnr] = (thisnib & 0x8) ? 2 : 1;
 503                 }
 504               else if ((looking_for & MODE) == DISP  ||
 505                        (looking_for & MODE) == ABS   ||
 506                        (looking_for & MODE) == PCREL ||
 507                        (looking_for & MODE) == INDEXB ||
 508                        (looking_for & MODE) == INDEXW ||
 509                        (looking_for & MODE) == INDEXL)
 510                 {
 511                   extract_immediate (stream, looking_for, thisnib,
 512                                      data + len / 2, cst + opnr,
 513                                      cstlen + opnr, q);
 514                   /* Even address == bra, odd == bra/s.  */
 515                   if (q->how == O (O_BRAS, SB))
 516                     cst[opnr] -= 1;
 517                 }
 518               else if ((looking_for & MODE) == REG     ||
 519                        (looking_for & MODE) == LOWREG  ||
 520                        (looking_for & MODE) == IND     ||
 521                        (looking_for & MODE) == PREINC  ||
 522                        (looking_for & MODE) == POSTINC ||
 523                        (looking_for & MODE) == PREDEC  ||
 524                        (looking_for & MODE) == POSTDEC)
 525                 {
 526                   regno[opnr] = thisnib;
 527                 }
 528               else if (looking_for & CTRL)      /* Control Register */
 529                 {
 530                   thisnib &= 7;
 531                   if (((looking_for & MODE) == CCR  && (thisnib != C_CCR))  ||
 532                       ((looking_for & MODE) == EXR  && (thisnib != C_EXR))  ||
 533                       ((looking_for & MODE) == MACH && (thisnib != C_MACH)) ||
 534                       ((looking_for & MODE) == MACL && (thisnib != C_MACL)) ||
 535                       ((looking_for & MODE) == VBR  && (thisnib != C_VBR))  ||
 536                       ((looking_for & MODE) == SBR  && (thisnib != C_SBR)))
 537                     goto fail;
 538                   if (((looking_for & MODE) == CCR_EXR &&
 539                        (thisnib != C_CCR && thisnib != C_EXR)) ||
 540                       ((looking_for & MODE) == VBR_SBR &&
 541                        (thisnib != C_VBR && thisnib != C_SBR)) ||
 542                       ((looking_for & MODE) == MACREG &&
 543                        (thisnib != C_MACH && thisnib != C_MACL)))
 544                     goto fail;
 545                   if (((looking_for & MODE) == CC_EX_VB_SB &&
 546                        (thisnib != C_CCR && thisnib != C_EXR &&
 547                         thisnib != C_VBR && thisnib != C_SBR)))
 548                     goto fail;
 549
 550                   regno[opnr] = thisnib;
 551                 }
 552               else if ((looking_for & SIZE) == L_5)
 553                 {
 554                   cst[opnr] = data[len / 2] & 31;
 555                   cstlen[opnr] = 5;
 556                 }
 557               else if ((looking_for & SIZE) == L_4)
 558                 {
 559                   cst[opnr] = thisnib;
 560                   cstlen[opnr] = 4;
 561                 }
 562               else if ((looking_for & SIZE) == L_16 ||
 563                        (looking_for & SIZE) == L_16U)
 564                 {
 565                   cst[opnr] = (data[len / 2]) * 256 + data[(len + 2) / 2];
 566                   cstlen[opnr] = 16;
 567                 }
 568               else if ((looking_for & MODE) == MEMIND)
 569                 {
 570                   cst[opnr] = data[1];
 571                 }
 572               else if ((looking_for & MODE) == VECIND)
 573                 {
 574                   cst[opnr] = data[1] & 0x7f;
 575                 }
 576               else if ((looking_for & SIZE) == L_32)
 577                 {
 578                   int i = len / 2;
 579
 580                   cst[opnr] = ((data[i] << 24)
 581                                | (data[i + 1] << 16)
 582                                | (data[i + 2] << 8)
 583                                | (data[i + 3]));
 584
 585                   cstlen[opnr] = 32;
 586                 }
 587               else if ((looking_for & SIZE) == L_24)
 588                 {
 589                   int i = len / 2;
 590
 591                   cst[opnr] =
 592                     (data[i] << 16) | (data[i + 1] << 8) | (data[i + 2]);
 593                   cstlen[opnr] = 24;
 594                 }
 595               else if (looking_for & IGNORE)
 596                 {
 597                   ;
 598                 }
 599               else if (looking_for & DISPREG)
 600                 {
 601                   dispregno[opnr] = thisnib & 7;
 602                 }
 603               else if ((looking_for & MODE) == KBIT)
 604                 {
 605                   switch (thisnib)
 606                     {
 607                     case 9:
 608                       cst[opnr] = 4;
 609                       break;
 610                     case 8:
 611                       cst[opnr] = 2;
 612                       break;
 613                     case 0:
 614                       cst[opnr] = 1;
 615                       break;
 616                     default:
 617                       goto fail;
 618                     }
 619                 }
 620               else if ((looking_for & SIZE) == L_8)
 621                 {
 622                   cstlen[opnr] = 8;
 623                   cst[opnr] = data[len / 2];
 624                 }
 625               else if ((looking_for & SIZE) == L_3 ||
 626                        (looking_for & SIZE) == L_3NZ)
 627                 {
 628                   cst[opnr] = thisnib & 0x7;
 629                   if (cst[opnr] == 0 && (looking_for & SIZE) == L_3NZ)
 630                     goto fail;
 631                 }
 632               else if ((looking_for & SIZE) == L_2)
 633                 {
 634                   cstlen[opnr] = 2;
 635                   cst[opnr] = thisnib & 0x3;
 636                 }
 637               else if ((looking_for & MODE) == MACREG)
 638                 {
 639                   cst[opnr] = (thisnib == 3);
 640                 }
 641               else if (looking_for == (op_type) E)
 642                 {
 643                   outfn (stream, "%s\t", q->name);
 644
 645                   /* Gross.  Disgusting.  */
 646                   if (strcmp (q->name, "ldm.l") == 0)
 647                     {
 648                       int count, high;
 649
 650                       count = (data[1] / 16) & 0x3;
 651                       high = regno[1];
 652
 653                       outfn (stream, "@sp+,er%d-er%d", high - count, high);
 654                       return qi->length;
 655                     }
 656
 657                   if (strcmp (q->name, "stm.l") == 0)
 658                     {
 659                       int count, low;
 660
 661                       count = (data[1] / 16) & 0x3;
 662                       low = regno[0];
 663
 664                       outfn (stream, "er%d-er%d,@-sp", low, low + count);
 665                       return qi->length;
 666                     }
 667                   if (strcmp (q->name, "rte/l") == 0
 668                       || strcmp (q->name, "rts/l") == 0)
 669                     {
 670                       if (regno[0] == 0)
 671                         outfn (stream, "er%d", regno[1]);
 672                       else
 673                         {
 674                           outfn (stream, "er%d-er%d", regno[1] - regno[0],
 675                                  regno[1]);
 676                         }
 677                       return qi->length;
 678                     }
 679                   if (strncmp (q->name, "mova", 4) == 0)
 680                     {
 681                       op_type *args = q->args.nib;
 682
 683                       if (args[1] == (op_type) E)
 684                         {
 685                           /* Short form.  */
 686                           print_one_arg (info, addr, args[0], cst[0],
 687                                          cstlen[0], dispregno[0], regno[0],
 688                                          pregnames, qi->length);
 689                           outfn (stream, ",er%d", dispregno[0]);
 690                         }
 691                       else
 692                         {
 693                           outfn (stream, "@(0x%x:%d,", cst[0], cstlen[0]);
 694                           print_one_arg (info, addr, args[1], cst[1],
 695                                          cstlen[1], dispregno[1], regno[1],
 696                                          pregnames, qi->length);
 697                           outfn (stream, ".%c),",
 698                                  (args[0] & MODE) == INDEXB ? 'b' : 'w');
 699                           print_one_arg (info, addr, args[2], cst[2],
 700                                          cstlen[2], dispregno[2], regno[2],
 701                                          pregnames, qi->length);
 702                         }
 703                       return qi->length;
 704                     }
 705                   /* Fill in the args.  */
 706                   {
 707                     op_type *args = q->args.nib;
 708                     int hadone = 0;
 709                     int nargs;
 710
 711                     /* Special case handling for the adds and subs instructions
 712                        since in H8 mode thay can only take the r0-r7 registers but
 713                        in other (higher) modes they can take the er0-er7 registers
 714                        as well.  */
 715                     if (strcmp (qi->opcode->name, "adds") == 0
 716                         || strcmp (qi->opcode->name, "subs") == 0)
 717                       {
 718                         outfn (stream, "#%d,%s", cst[0], pregnames[regno[1] & 0x7]);
 719                         return qi->length;
 720                       }
 721
 722                     for (nargs = 0;
 723                          nargs < 3 && args[nargs] != (op_type) E;
 724                          nargs++)
 725                       {
 726                         int x = args[nargs];
 727
 728                         if (hadone)
 729                           outfn (stream, ",");
 730
 731                         print_one_arg (info, addr, x,
 732                                        cst[nargs], cstlen[nargs],
 733                                        dispregno[nargs], regno[nargs],
 734                                        pregnames, qi->length);
 735
 736                         hadone = 1;
 737                       }
 738                   }
 739
 740                   return qi->length;
 741                 }
 742               else
 743                 /* xgettext:c-format */
 744                 outfn (stream, _("Don't understand 0x%x \n"), looking_for);
 745             }
 746
 747           len++;
 748           nib++;
 749         }
 750
 751     fail:
 752       ;
 753     }
 754
 755   /* Fell off the end.  */
 756   outfn (stream, ".word\tH'%x,H'%x", data[0], data[1]);
 757   return 2;
 758 }
 759
 760 int
 761 print_insn_h8300 (addr, info)
 762      bfd_vma addr;
 763      disassemble_info *info;
 764 {
 765   return bfd_h8_disassemble (addr, info, 0);
 766 }
 767
 768 int
 769 print_insn_h8300h (addr, info)
 770      bfd_vma addr;
 771      disassemble_info *info;
 772 {
 773   return bfd_h8_disassemble (addr, info, 1);
 774 }
 775
 776 int
 777 print_insn_h8300s (addr, info)
 778      bfd_vma addr;
 779      disassemble_info *info;
 780 {
 781   return bfd_h8_disassemble (addr, info, 2);
 782 }