opcodes/h8300-dis.c

   1 /* Disassemble h8300 instructions.
   2    Copyright (C) 1993-2020 Free Software Foundation, Inc.
   3
   4    This file is part of the GNU opcodes library.
   5
   6    This library is free software; you can redistribute it and/or modify
   7    it under the terms of the GNU General Public License as published by
   8    the Free Software Foundation; either version 3, or (at your option)
   9    any later version.
  10
  11    It is distributed in the hope that it will be useful, but WITHOUT
  12    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  13    or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
  14    License for more details.
  15
  16    You should have received a copy of the GNU General Public License
  17    along with this program; if not, write to the Free Software
  18    Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
  19    MA 02110-1301, USA.  */
  20
  21 #define DEFINE_TABLE
  22
  23 #include "sysdep.h"
  24 #define h8_opcodes h8ops
  25 #include "opcode/h8300.h"
  26 #include "disassemble.h"
  27 #include "opintl.h"
  28 #include "libiberty.h"
  29
  30 struct h8_instruction
  31 {
  32   int length;
  33   const struct h8_opcode *opcode;
  34 };
  35
  36 struct h8_instruction *h8_instructions;
  37
  38 /* Run through the opcodes and sort them into order to make them easy
  39    to disassemble.  */
  40
  41 static void
  42 bfd_h8_disassemble_init (void)
  43 {
  44   unsigned int i;
  45   unsigned int nopcodes;
  46   const struct h8_opcode *p;
  47   struct h8_instruction *pi;
  48
  49   nopcodes = sizeof (h8_opcodes) / sizeof (struct h8_opcode);
  50
  51   h8_instructions = xmalloc (nopcodes * sizeof (struct h8_instruction));
  52
  53   for (p = h8_opcodes, pi = h8_instructions; p->name; p++, pi++)
  54     {
  55       /* Just make sure there are an even number of nibbles in it, and
  56          that the count is the same as the length.  */
  57       for (i = 0; p->data.nib[i] != (op_type) E; i++)
  58         ;
  59
  60       if (i & 1)
  61         {
  62           /* xgettext:c-format */
  63           opcodes_error_handler (_("internal error, h8_disassemble_init"));
  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 = (((unsigned) data[0] << 24) + (data[1] << 16)
 144               + (data[2] << 8) + data[3]);
 145       break;
 146     default:
 147       *len = 0;
 148       *cst = 0;
 149       fprintf (stream, "DISP bad size\n");
 150       break;
 151     }
 152 }
 153
 154 static const char *regnames[] =
 155 {
 156   "r0h", "r1h", "r2h", "r3h", "r4h", "r5h", "r6h", "r7h",
 157   "r0l", "r1l", "r2l", "r3l", "r4l", "r5l", "r6l", "r7l"
 158 };
 159 static const char *wregnames[] =
 160 {
 161   "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",
 162   "e0", "e1", "e2", "e3", "e4", "e5", "e6", "e7"
 163 };
 164 static const char *lregnames[] =
 165 {
 166   "er0", "er1", "er2", "er3", "er4", "er5", "er6", "er7",
 167   "er0", "er1", "er2", "er3", "er4", "er5", "er6", "er7"
 168 };
 169 static const char *cregnames[] =
 170 {
 171   "ccr", "exr", "mach", "macl", "", "", "vbr", "sbr"
 172 };
 173
 174 static void
 175 print_one_arg (disassemble_info *info,
 176                bfd_vma addr,
 177                op_type x,
 178                int cst,
 179                int cstlen,
 180                int rdisp_n,
 181                int rn,
 182                const char **pregnames,
 183                int len)
 184 {
 185   void * stream = info->stream;
 186   fprintf_ftype outfn = info->fprintf_func;
 187
 188   if ((x & SIZE) == L_3 || (x & SIZE) == L_3NZ)
 189     outfn (stream, "#0x%x", (unsigned) cst);
 190   else if ((x & MODE) == IMM)
 191     outfn (stream, "#0x%x", (unsigned) cst);
 192   else if ((x & MODE) == DBIT || (x & MODE) == KBIT)
 193     outfn (stream, "#%d", (unsigned) cst);
 194   else if ((x & MODE) == CONST_2)
 195     outfn (stream, "#2");
 196   else if ((x & MODE) == CONST_4)
 197     outfn (stream, "#4");
 198   else if ((x & MODE) == CONST_8)
 199     outfn (stream, "#8");
 200   else if ((x & MODE) == CONST_16)
 201     outfn (stream, "#16");
 202   else if ((x & MODE) == REG)
 203     {
 204       switch (x & SIZE)
 205         {
 206         case L_8:
 207           outfn (stream, "%s", regnames[rn]);
 208           break;
 209         case L_16:
 210         case L_16U:
 211           outfn (stream, "%s", wregnames[rn]);
 212           break;
 213         case L_P:
 214         case L_32:
 215           outfn (stream, "%s", lregnames[rn]);
 216           break;
 217         }
 218     }
 219   else if ((x & MODE) == LOWREG)
 220     {
 221       switch (x & SIZE)
 222         {
 223         case L_8:
 224           /* Always take low half of reg.  */
 225           outfn (stream, "%s.b", regnames[rn < 8 ? rn + 8 : rn]);
 226           break;
 227         case L_16:
 228         case L_16U:
 229           /* Always take low half of reg.  */
 230           outfn (stream, "%s.w", wregnames[rn < 8 ? rn : rn - 8]);
 231           break;
 232         case L_P:
 233         case L_32:
 234           outfn (stream, "%s.l", lregnames[rn]);
 235           break;
 236         }
 237     }
 238   else if ((x & MODE) == POSTINC)
 239     outfn (stream, "@%s+", pregnames[rn]);
 240
 241   else if ((x & MODE) == POSTDEC)
 242     outfn (stream, "@%s-", pregnames[rn]);
 243
 244   else if ((x & MODE) == PREINC)
 245     outfn (stream, "@+%s", pregnames[rn]);
 246
 247   else if ((x & MODE) == PREDEC)
 248     outfn (stream, "@-%s", pregnames[rn]);
 249
 250   else if ((x & MODE) == IND)
 251     outfn (stream, "@%s", pregnames[rn]);
 252
 253   else if ((x & MODE) == ABS || (x & ABSJMP))
 254     outfn (stream, "@0x%x:%d", (unsigned) cst, cstlen);
 255
 256   else if ((x & MODE) == MEMIND)
 257     outfn (stream, "@@%d (0x%x)", cst, cst);
 258
 259   else if ((x & MODE) == VECIND)
 260     {
 261       /* FIXME Multiplier should be 2 or 4, depending on processor mode,
 262          by which is meant "normal" vs. "middle", "advanced", "maximum".  */
 263
 264       int offset = (cst + 0x80) * 4;
 265       outfn (stream, "@@%d (0x%x)", offset, offset);
 266     }
 267   else if ((x & MODE) == PCREL)
 268     {
 269       if ((x & SIZE) == L_16 ||
 270           (x & SIZE) == L_16U)
 271         {
 272           outfn (stream, ".%s%d (0x%lx)",
 273                    (short) cst > 0 ? "+" : "",
 274                    (short) cst,
 275                    (long)(addr + (short) cst + len));
 276         }
 277       else
 278         {
 279           outfn (stream, ".%s%d (0x%lx)",
 280                    (char) cst > 0 ? "+" : "",
 281                    (char) cst,
 282                    (long)(addr + (char) cst + len));
 283         }
 284     }
 285   else if ((x & MODE) == DISP)
 286     outfn (stream, "@(0x%x:%d,%s)", cst, cstlen, pregnames[rdisp_n]);
 287
 288   else if ((x & MODE) == INDEXB)
 289     /* Always take low half of reg.  */
 290     outfn (stream, "@(0x%x:%d,%s.b)", cst, cstlen,
 291            regnames[rdisp_n < 8 ? rdisp_n + 8 : rdisp_n]);
 292
 293   else if ((x & MODE) == INDEXW)
 294     /* Always take low half of reg.  */
 295     outfn (stream, "@(0x%x:%d,%s.w)", cst, cstlen,
 296            wregnames[rdisp_n < 8 ? rdisp_n : rdisp_n - 8]);
 297
 298   else if ((x & MODE) == INDEXL)
 299     outfn (stream, "@(0x%x:%d,%s.l)", cst, cstlen, lregnames[rdisp_n]);
 300
 301   else if (x & CTRL)
 302     outfn (stream, "%s", cregnames[rn]);
 303
 304   else if ((x & MODE) == CCR)
 305     outfn (stream, "ccr");
 306
 307   else if ((x & MODE) == EXR)
 308     outfn (stream, "exr");
 309
 310   else if ((x & MODE) == MACREG)
 311     outfn (stream, "mac%c", cst ? 'l' : 'h');
 312
 313   else
 314     /* xgettext:c-format */
 315     outfn (stream, _("Hmmmm 0x%x"), x);
 316 }
 317
 318 static unsigned int
 319 bfd_h8_disassemble (bfd_vma addr, disassemble_info *info, int mach)
 320 {
 321   /* Find the first entry in the table for this opcode.  */
 322   int regno[3] = { 0, 0, 0 };
 323   int dispregno[3] = { 0, 0, 0 };
 324   int cst[3] = { 0, 0, 0 };
 325   int cstlen[3] = { 0, 0, 0 };
 326   static bfd_boolean init = 0;
 327   const struct h8_instruction *qi;
 328   char const **pregnames = mach != 0 ? lregnames : wregnames;
 329   int status;
 330   unsigned int maxlen;
 331   unsigned char data[MAX_CODE_NIBBLES];
 332   void *stream = info->stream;
 333   fprintf_ftype outfn = info->fprintf_func;
 334
 335   if (!init)
 336     {
 337       bfd_h8_disassemble_init ();
 338       init = 1;
 339     }
 340
 341   status = info->read_memory_func (addr, data, 2, info);
 342   if (status != 0)
 343     {
 344       info->memory_error_func (status, addr, info);
 345       return -1;
 346     }
 347
 348   for (maxlen = 2; status == 0 && maxlen < sizeof (data) / 2; maxlen += 2)
 349     status = info->read_memory_func (addr + maxlen, data + maxlen, 2, info);
 350
 351   /* Find the exact opcode/arg combo.  */
 352   for (qi = h8_instructions; qi->opcode->name; qi++)
 353     {
 354       const struct h8_opcode *q = qi->opcode;
 355       const op_type *nib = q->data.nib;
 356       unsigned int len = 0;
 357
 358       while (len / 2 < maxlen)
 359         {
 360           op_type looking_for = *nib;
 361           int thisnib = data[len / 2];
 362           int opnr;
 363
 364           thisnib = (len & 1) ? (thisnib & 0xf) : ((thisnib / 16) & 0xf);
 365           opnr = ((looking_for & OP3) == OP3 ? 2
 366                   : (looking_for & DST) == DST ? 1 : 0);
 367
 368           if (looking_for < 16 && looking_for >= 0)
 369             {
 370               if (looking_for != thisnib)
 371                 goto fail;
 372             }
 373           else
 374             {
 375               if ((int) looking_for & (int) B31)
 376                 {
 377                   if (!((thisnib & 0x8) != 0))
 378                     goto fail;
 379
 380                   looking_for = (op_type) ((int) looking_for & ~(int) B31);
 381                   thisnib &= 0x7;
 382                 }
 383               else if ((int) looking_for & (int) B30)
 384                 {
 385                   if (!((thisnib & 0x8) == 0))
 386                     goto fail;
 387
 388                   looking_for = (op_type) ((int) looking_for & ~(int) B30);
 389                 }
 390
 391               if ((int) looking_for & (int) B21)
 392                 {
 393                   if (!((thisnib & 0x4) != 0))
 394                     goto fail;
 395
 396                   looking_for = (op_type) ((int) looking_for & ~(int) B21);
 397                   thisnib &= 0xb;
 398                 }
 399               else if ((int) looking_for & (int) B20)
 400                 {
 401                   if (!((thisnib & 0x4) == 0))
 402                     goto fail;
 403
 404                   looking_for = (op_type) ((int) looking_for & ~(int) B20);
 405                 }
 406               if ((int) looking_for & (int) B11)
 407                 {
 408                   if (!((thisnib & 0x2) != 0))
 409                     goto fail;
 410
 411                   looking_for = (op_type) ((int) looking_for & ~(int) B11);
 412                   thisnib &= 0xd;
 413                 }
 414               else if ((int) looking_for & (int) B10)
 415                 {
 416                   if (!((thisnib & 0x2) == 0))
 417                     goto fail;
 418
 419                   looking_for = (op_type) ((int) looking_for & ~(int) B10);
 420                 }
 421
 422               if ((int) looking_for & (int) B01)
 423                 {
 424                   if (!((thisnib & 0x1) != 0))
 425                     goto fail;
 426
 427                   looking_for = (op_type) ((int) looking_for & ~(int) B01);
 428                   thisnib &= 0xe;
 429                 }
 430               else if ((int) looking_for & (int) B00)
 431                 {
 432                   if (!((thisnib & 0x1) == 0))
 433                     goto fail;
 434
 435                   looking_for = (op_type) ((int) looking_for & ~(int) B00);
 436                 }
 437
 438               if (looking_for & IGNORE)
 439                 {
 440                   /* Hitachi has declared that IGNORE must be zero.  */
 441                   if (thisnib != 0)
 442                     goto fail;
 443                 }
 444               else if ((looking_for & MODE) == DATA)
 445                 {
 446                   ;                     /* Skip embedded data.  */
 447                 }
 448               else if ((looking_for & MODE) == DBIT)
 449                 {
 450                   /* Exclude adds/subs by looking at bit 0 and 2, and
 451                      make sure the operand size, either w or l,
 452                      matches by looking at bit 1.  */
 453                   if ((looking_for & 7) != (thisnib & 7))
 454                     goto fail;
 455
 456                   cst[opnr] = (thisnib & 0x8) ? 2 : 1;
 457                 }
 458               else if ((looking_for & MODE) == DISP
 459                        || (looking_for & MODE) == ABS
 460                        || (looking_for & MODE) == PCREL
 461                        || (looking_for & MODE) == INDEXB
 462                        || (looking_for & MODE) == INDEXW
 463                        || (looking_for & MODE) == INDEXL)
 464                 {
 465                   int extra;
 466                   switch (looking_for & SIZE)
 467                     {
 468                     case L_16:
 469                     case L_16U:
 470                       extra = 1;
 471                       break;
 472                     case L_32:
 473                       extra = 3;
 474                       break;
 475                     default:
 476                       extra = 0;
 477                       break;
 478                     }
 479                   if (len / 2 + extra >= maxlen)
 480                     break;
 481                   extract_immediate (stream, looking_for, thisnib,
 482                                      data + len / 2, cst + opnr,
 483                                      cstlen + opnr, q);
 484                   /* Even address == bra, odd == bra/s.  */
 485                   if (q->how == O (O_BRAS, SB))
 486                     cst[opnr] -= 1;
 487                 }
 488               else if ((looking_for & MODE) == REG
 489                        || (looking_for & MODE) == LOWREG
 490                        || (looking_for & MODE) == IND
 491                        || (looking_for & MODE) == PREINC
 492                        || (looking_for & MODE) == POSTINC
 493                        || (looking_for & MODE) == PREDEC
 494                        || (looking_for & MODE) == POSTDEC)
 495                 {
 496                   regno[opnr] = thisnib;
 497                 }
 498               else if (looking_for & CTRL)      /* Control Register.  */
 499                 {
 500                   thisnib &= 7;
 501                   if (((looking_for & MODE) == CCR  && (thisnib != C_CCR))
 502                       || ((looking_for & MODE) == EXR  && (thisnib != C_EXR))
 503                       || ((looking_for & MODE) == MACH && (thisnib != C_MACH))
 504                       || ((looking_for & MODE) == MACL && (thisnib != C_MACL))
 505                       || ((looking_for & MODE) == VBR  && (thisnib != C_VBR))
 506                       || ((looking_for & MODE) == SBR  && (thisnib != C_SBR)))
 507                     goto fail;
 508                   if (((looking_for & MODE) == CCR_EXR
 509                        && (thisnib != C_CCR && thisnib != C_EXR))
 510                       || ((looking_for & MODE) == VBR_SBR
 511                           && (thisnib != C_VBR && thisnib != C_SBR))
 512                       || ((looking_for & MODE) == MACREG
 513                           && (thisnib != C_MACH && thisnib != C_MACL)))
 514                     goto fail;
 515                   if (((looking_for & MODE) == CC_EX_VB_SB
 516                        && (thisnib != C_CCR && thisnib != C_EXR
 517                            && thisnib != C_VBR && thisnib != C_SBR)))
 518                     goto fail;
 519
 520                   regno[opnr] = thisnib;
 521                 }
 522               else if ((looking_for & SIZE) == L_5)
 523                 {
 524                   cst[opnr] = data[len / 2] & 31;
 525                   cstlen[opnr] = 5;
 526                 }
 527               else if ((looking_for & SIZE) == L_4)
 528                 {
 529                   cst[opnr] = thisnib;
 530                   cstlen[opnr] = 4;
 531                 }
 532               else if ((looking_for & SIZE) == L_16
 533                        || (looking_for & SIZE) == L_16U)
 534                 {
 535                   if (len / 2 + 1 >= maxlen)
 536                     break;
 537                   cst[opnr] = (data[len / 2]) * 256 + data[(len + 2) / 2];
 538                   cstlen[opnr] = 16;
 539                 }
 540               else if ((looking_for & MODE) == MEMIND)
 541                 {
 542                   cst[opnr] = data[1];
 543                 }
 544               else if ((looking_for & MODE) == VECIND)
 545                 {
 546                   cst[opnr] = data[1] & 0x7f;
 547                 }
 548               else if ((looking_for & SIZE) == L_32)
 549                 {
 550                   unsigned int i = len / 2;
 551
 552                   if (i + 3 >= maxlen)
 553                     break;
 554                   cst[opnr] = (((unsigned) data[i] << 24)
 555                                | (data[i + 1] << 16)
 556                                | (data[i + 2] << 8)
 557                                | (data[i + 3]));
 558
 559                   cstlen[opnr] = 32;
 560                 }
 561               else if ((looking_for & SIZE) == L_24)
 562                 {
 563                   unsigned int i = len / 2;
 564
 565                   if (i + 2 >= maxlen)
 566                     break;
 567                   cst[opnr] =
 568                     (data[i] << 16) | (data[i + 1] << 8) | (data[i + 2]);
 569                   cstlen[opnr] = 24;
 570                 }
 571               else if (looking_for & DISPREG)
 572                 {
 573                   dispregno[opnr] = thisnib & 7;
 574                 }
 575               else if ((looking_for & MODE) == KBIT)
 576                 {
 577                   switch (thisnib)
 578                     {
 579                     case 9:
 580                       cst[opnr] = 4;
 581                       break;
 582                     case 8:
 583                       cst[opnr] = 2;
 584                       break;
 585                     case 0:
 586                       cst[opnr] = 1;
 587                       break;
 588                     default:
 589                       goto fail;
 590                     }
 591                 }
 592               else if ((looking_for & SIZE) == L_8)
 593                 {
 594                   cstlen[opnr] = 8;
 595                   cst[opnr] = data[len / 2];
 596                 }
 597               else if ((looking_for & SIZE) == L_3
 598                        || (looking_for & SIZE) == L_3NZ)
 599                 {
 600                   cst[opnr] = thisnib & 0x7;
 601                   if (cst[opnr] == 0 && (looking_for & SIZE) == L_3NZ)
 602                     goto fail;
 603                 }
 604               else if ((looking_for & SIZE) == L_2)
 605                 {
 606                   cstlen[opnr] = 2;
 607                   cst[opnr] = thisnib & 0x3;
 608                 }
 609               else if ((looking_for & MODE) == MACREG)
 610                 {
 611                   cst[opnr] = (thisnib == 3);
 612                 }
 613               else if (looking_for == (op_type) E)
 614                 {
 615                   outfn (stream, "%s\t", q->name);
 616
 617                   /* Gross.  Disgusting.  */
 618                   if (strcmp (q->name, "ldm.l") == 0)
 619                     {
 620                       int count, high;
 621
 622                       count = (data[1] / 16) & 0x3;
 623                       high = regno[1];
 624
 625                       outfn (stream, "@sp+,er%d-er%d", high - count, high);
 626                       return qi->length;
 627                     }
 628
 629                   if (strcmp (q->name, "stm.l") == 0)
 630                     {
 631                       int count, low;
 632
 633                       count = (data[1] / 16) & 0x3;
 634                       low = regno[0];
 635
 636                       outfn (stream, "er%d-er%d,@-sp", low, low + count);
 637                       return qi->length;
 638                     }
 639                   if (strcmp (q->name, "rte/l") == 0
 640                       || strcmp (q->name, "rts/l") == 0)
 641                     {
 642                       if (regno[0] == 0)
 643                         outfn (stream, "er%d", regno[1]);
 644                       else
 645                         outfn (stream, "er%d-er%d", regno[1] - regno[0],
 646                                regno[1]);
 647                       return qi->length;
 648                     }
 649                   if (CONST_STRNEQ (q->name, "mova"))
 650                     {
 651                       const op_type *args = q->args.nib;
 652
 653                       if (args[1] == (op_type) E)
 654                         {
 655                           /* Short form.  */
 656                           print_one_arg (info, addr, args[0], cst[0],
 657                                          cstlen[0], dispregno[0], regno[0],
 658                                          pregnames, qi->length);
 659                           outfn (stream, ",er%d", dispregno[0]);
 660                         }
 661                       else
 662                         {
 663                           outfn (stream, "@(0x%x:%d,", cst[0], cstlen[0]);
 664                           print_one_arg (info, addr, args[1], cst[1],
 665                                          cstlen[1], dispregno[1], regno[1],
 666                                          pregnames, qi->length);
 667                           outfn (stream, ".%c),",
 668                                  (args[0] & MODE) == INDEXB ? 'b' : 'w');
 669                           print_one_arg (info, addr, args[2], cst[2],
 670                                          cstlen[2], dispregno[2], regno[2],
 671                                          pregnames, qi->length);
 672                         }
 673                       return qi->length;
 674                     }
 675                   /* Fill in the args.  */
 676                   {
 677                     const op_type *args = q->args.nib;
 678                     int hadone = 0;
 679                     int nargs;
 680
 681                     /* Special case handling for the adds and subs instructions
 682                        since in H8 mode thay can only take the r0-r7 registers
 683                        but in other (higher) modes they can take the er0-er7
 684                        registers as well.  */
 685                     if (strcmp (qi->opcode->name, "adds") == 0
 686                         || strcmp (qi->opcode->name, "subs") == 0)
 687                       {
 688                         outfn (stream, "#%d,%s", cst[0], pregnames[regno[1] & 0x7]);
 689                         return qi->length;
 690                       }
 691
 692                     for (nargs = 0;
 693                          nargs < 3 && args[nargs] != (op_type) E;
 694                          nargs++)
 695                       {
 696                         int x = args[nargs];
 697
 698                         if (hadone)
 699                           outfn (stream, ",");
 700
 701                         print_one_arg (info, addr, x,
 702                                        cst[nargs], cstlen[nargs],
 703                                        dispregno[nargs], regno[nargs],
 704                                        pregnames, qi->length);
 705
 706                         hadone = 1;
 707                       }
 708                   }
 709
 710                   return qi->length;
 711                 }
 712               else
 713                 /* xgettext:c-format */
 714                 outfn (stream, _("Don't understand 0x%x \n"), looking_for);
 715             }
 716
 717           len++;
 718           nib++;
 719         }
 720
 721     fail:
 722       ;
 723     }
 724
 725   /* Fell off the end.  */
 726   outfn (stream, ".word\tH'%x,H'%x", data[0], data[1]);
 727   return 2;
 728 }
 729
 730 int
 731 print_insn_h8300 (bfd_vma addr, disassemble_info *info)
 732 {
 733   return bfd_h8_disassemble (addr, info, 0);
 734 }
 735
 736 int
 737 print_insn_h8300h (bfd_vma addr, disassemble_info *info)
 738 {
 739   return bfd_h8_disassemble (addr, info, 1);
 740 }
 741
 742 int
 743 print_insn_h8300s (bfd_vma addr, disassemble_info *info)
 744 {
 745   return bfd_h8_disassemble (addr, info, 2);
 746 }