opcodes/sh-dis.c

   1 /* Disassemble SH instructions.
   2    Copyright (C) 1993-2016 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 file; see the file COPYING.  If not, write to the
  18    Free Software Foundation, 51 Franklin Street - Fifth Floor, Boston,
  19    MA 02110-1301, USA.  */
  20
  21 #include "sysdep.h"
  22 #include <stdio.h>
  23
  24 #define STATIC_TABLE
  25 #define DEFINE_TABLE
  26
  27 #include "sh-opc.h"
  28 #include "dis-asm.h"
  29
  30 #ifdef ARCH_all
  31 #define INCLUDE_SHMEDIA
  32 #endif
  33
  34 static void
  35 print_movxy (const sh_opcode_info *op,
  36              int rn,
  37              int rm,
  38              fprintf_ftype fprintf_fn,
  39              void *stream)
  40 {
  41   int n;
  42
  43   fprintf_fn (stream, "%s\t", op->name);
  44   for (n = 0; n < 2; n++)
  45     {
  46       switch (op->arg[n])
  47         {
  48         case A_IND_N:
  49         case AX_IND_N:
  50         case AXY_IND_N:
  51         case AY_IND_N:
  52         case AYX_IND_N:
  53           fprintf_fn (stream, "@r%d", rn);
  54           break;
  55         case A_INC_N:
  56         case AX_INC_N:
  57         case AXY_INC_N:
  58         case AY_INC_N:
  59         case AYX_INC_N:
  60           fprintf_fn (stream, "@r%d+", rn);
  61           break;
  62         case AX_PMOD_N:
  63         case AXY_PMOD_N:
  64           fprintf_fn (stream, "@r%d+r8", rn);
  65           break;
  66         case AY_PMOD_N:
  67         case AYX_PMOD_N:
  68           fprintf_fn (stream, "@r%d+r9", rn);
  69           break;
  70         case DSP_REG_A_M:
  71           fprintf_fn (stream, "a%c", '0' + rm);
  72           break;
  73         case DSP_REG_X:
  74           fprintf_fn (stream, "x%c", '0' + rm);
  75           break;
  76         case DSP_REG_Y:
  77           fprintf_fn (stream, "y%c", '0' + rm);
  78           break;
  79         case DSP_REG_AX:
  80           fprintf_fn (stream, "%c%c",
  81                       (rm & 1) ? 'x' : 'a',
  82                       (rm & 2) ? '1' : '0');
  83           break;
  84         case DSP_REG_XY:
  85           fprintf_fn (stream, "%c%c",
  86                       (rm & 1) ? 'y' : 'x',
  87                       (rm & 2) ? '1' : '0');
  88           break;
  89         case DSP_REG_AY:
  90           fprintf_fn (stream, "%c%c",
  91                       (rm & 2) ? 'y' : 'a',
  92                       (rm & 1) ? '1' : '0');
  93           break;
  94         case DSP_REG_YX:
  95           fprintf_fn (stream, "%c%c",
  96                       (rm & 2) ? 'x' : 'y',
  97                       (rm & 1) ? '1' : '0');
  98           break;
  99         default:
 100           abort ();
 101         }
 102       if (n == 0)
 103         fprintf_fn (stream, ",");
 104     }
 105 }
 106
 107 /* Print a double data transfer insn.  INSN is just the lower three
 108    nibbles of the insn, i.e. field a and the bit that indicates if
 109    a parallel processing insn follows.
 110    Return nonzero if a field b of a parallel processing insns follows.  */
 111
 112 static void
 113 print_insn_ddt (int insn, struct disassemble_info *info)
 114 {
 115   fprintf_ftype fprintf_fn = info->fprintf_func;
 116   void *stream = info->stream;
 117
 118   /* If this is just a nop, make sure to emit something.  */
 119   if (insn == 0x000)
 120     fprintf_fn (stream, "nopx\tnopy");
 121
 122   /* If a parallel processing insn was printed before,
 123      and we got a non-nop, emit a tab.  */
 124   if ((insn & 0x800) && (insn & 0x3ff))
 125     fprintf_fn (stream, "\t");
 126
 127   /* Check if either the x or y part is invalid.  */
 128   if (((insn & 0xc) == 0 && (insn & 0x2a0))
 129       || ((insn & 3) == 0 && (insn & 0x150)))
 130     if (info->mach != bfd_mach_sh_dsp
 131         && info->mach != bfd_mach_sh3_dsp)
 132       {
 133         static const sh_opcode_info *first_movx, *first_movy;
 134         const sh_opcode_info *op;
 135         int is_movy;
 136
 137         if (! first_movx)
 138           {
 139             for (first_movx = sh_table; first_movx->nibbles[1] != MOVX_NOPY;)
 140               first_movx++;
 141             for (first_movy = first_movx; first_movy->nibbles[1] != MOVY_NOPX;)
 142               first_movy++;
 143           }
 144
 145         is_movy = ((insn & 3) != 0);
 146
 147         if (is_movy)
 148           op = first_movy;
 149         else
 150           op = first_movx;
 151
 152         while (op->nibbles[2] != (unsigned) ((insn >> 4) & 3)
 153                || op->nibbles[3] != (unsigned) (insn & 0xf))
 154           op++;
 155
 156         print_movxy (op,
 157                      (4 * ((insn & (is_movy ? 0x200 : 0x100)) == 0)
 158                       + 2 * is_movy
 159                       + 1 * ((insn & (is_movy ? 0x100 : 0x200)) != 0)),
 160                      (insn >> 6) & 3,
 161                      fprintf_fn, stream);
 162       }
 163     else
 164       fprintf_fn (stream, ".word 0x%x", insn);
 165   else
 166     {
 167       static const sh_opcode_info *first_movx, *first_movy;
 168       const sh_opcode_info *opx, *opy;
 169       unsigned int insn_x, insn_y;
 170
 171       if (! first_movx)
 172         {
 173           for (first_movx = sh_table; first_movx->nibbles[1] != MOVX;)
 174             first_movx++;
 175           for (first_movy = first_movx; first_movy->nibbles[1] != MOVY;)
 176             first_movy++;
 177         }
 178       insn_x = (insn >> 2) & 0xb;
 179       if (insn_x)
 180         {
 181           for (opx = first_movx; opx->nibbles[2] != insn_x;)
 182             opx++;
 183           print_movxy (opx, ((insn >> 9) & 1) + 4, (insn >> 7) & 1,
 184                        fprintf_fn, stream);
 185         }
 186       insn_y = (insn & 3) | ((insn >> 1) & 8);
 187       if (insn_y)
 188         {
 189           if (insn_x)
 190             fprintf_fn (stream, "\t");
 191           for (opy = first_movy; opy->nibbles[2] != insn_y;)
 192             opy++;
 193           print_movxy (opy, ((insn >> 8) & 1) + 6, (insn >> 6) & 1,
 194                        fprintf_fn, stream);
 195         }
 196     }
 197 }
 198
 199 static void
 200 print_dsp_reg (int rm, fprintf_ftype fprintf_fn, void *stream)
 201 {
 202   switch (rm)
 203     {
 204     case A_A1_NUM:
 205       fprintf_fn (stream, "a1");
 206       break;
 207     case A_A0_NUM:
 208       fprintf_fn (stream, "a0");
 209       break;
 210     case A_X0_NUM:
 211       fprintf_fn (stream, "x0");
 212       break;
 213     case A_X1_NUM:
 214       fprintf_fn (stream, "x1");
 215       break;
 216     case A_Y0_NUM:
 217       fprintf_fn (stream, "y0");
 218       break;
 219     case A_Y1_NUM:
 220       fprintf_fn (stream, "y1");
 221       break;
 222     case A_M0_NUM:
 223       fprintf_fn (stream, "m0");
 224       break;
 225     case A_A1G_NUM:
 226       fprintf_fn (stream, "a1g");
 227       break;
 228     case A_M1_NUM:
 229       fprintf_fn (stream, "m1");
 230       break;
 231     case A_A0G_NUM:
 232       fprintf_fn (stream, "a0g");
 233       break;
 234     default:
 235       fprintf_fn (stream, "0x%x", rm);
 236       break;
 237     }
 238 }
 239
 240 static void
 241 print_insn_ppi (int field_b, struct disassemble_info *info)
 242 {
 243   static char *sx_tab[] = { "x0", "x1", "a0", "a1" };
 244   static char *sy_tab[] = { "y0", "y1", "m0", "m1" };
 245   fprintf_ftype fprintf_fn = info->fprintf_func;
 246   void *stream = info->stream;
 247   unsigned int nib1, nib2, nib3;
 248   unsigned int altnib1, nib4;
 249   char *dc = NULL;
 250   const sh_opcode_info *op;
 251
 252   if ((field_b & 0xe800) == 0)
 253     {
 254       fprintf_fn (stream, "psh%c\t#%d,",
 255                   field_b & 0x1000 ? 'a' : 'l',
 256                   (field_b >> 4) & 127);
 257       print_dsp_reg (field_b & 0xf, fprintf_fn, stream);
 258       return;
 259     }
 260   if ((field_b & 0xc000) == 0x4000 && (field_b & 0x3000) != 0x1000)
 261     {
 262       static char *du_tab[] = { "x0", "y0", "a0", "a1" };
 263       static char *se_tab[] = { "x0", "x1", "y0", "a1" };
 264       static char *sf_tab[] = { "y0", "y1", "x0", "a1" };
 265       static char *sg_tab[] = { "m0", "m1", "a0", "a1" };
 266
 267       if (field_b & 0x2000)
 268         fprintf_fn (stream, "p%s %s,%s,%s\t",
 269                     (field_b & 0x1000) ? "add" : "sub",
 270                     sx_tab[(field_b >> 6) & 3],
 271                     sy_tab[(field_b >> 4) & 3],
 272                     du_tab[(field_b >> 0) & 3]);
 273
 274       else if ((field_b & 0xf0) == 0x10
 275                && info->mach != bfd_mach_sh_dsp
 276                && info->mach != bfd_mach_sh3_dsp)
 277         fprintf_fn (stream, "pclr %s \t", du_tab[(field_b >> 0) & 3]);
 278
 279       else if ((field_b & 0xf3) != 0)
 280         fprintf_fn (stream, ".word 0x%x\t", field_b);
 281
 282       fprintf_fn (stream, "pmuls%c%s,%s,%s",
 283                   field_b & 0x2000 ? ' ' : '\t',
 284                   se_tab[(field_b >> 10) & 3],
 285                   sf_tab[(field_b >>  8) & 3],
 286                   sg_tab[(field_b >>  2) & 3]);
 287       return;
 288     }
 289
 290   nib1 = PPIC;
 291   nib2 = field_b >> 12 & 0xf;
 292   nib3 = field_b >> 8 & 0xf;
 293   nib4 = field_b >> 4 & 0xf;
 294   switch (nib3 & 0x3)
 295     {
 296     case 0:
 297       dc = "";
 298       nib1 = PPI3;
 299       break;
 300     case 1:
 301       dc = "";
 302       break;
 303     case 2:
 304       dc = "dct ";
 305       nib3 -= 1;
 306       break;
 307     case 3:
 308       dc = "dcf ";
 309       nib3 -= 2;
 310       break;
 311     }
 312   if (nib1 == PPI3)
 313     altnib1 = PPI3NC;
 314   else
 315     altnib1 = nib1;
 316   for (op = sh_table; op->name; op++)
 317     {
 318       if ((op->nibbles[1] == nib1 || op->nibbles[1] == altnib1)
 319           && op->nibbles[2] == nib2
 320           && op->nibbles[3] == nib3)
 321         {
 322           int n;
 323
 324           switch (op->nibbles[4])
 325             {
 326             case HEX_0:
 327               break;
 328             case HEX_XX00:
 329               if ((nib4 & 3) != 0)
 330                 continue;
 331               break;
 332             case HEX_1:
 333               if ((nib4 & 3) != 1)
 334                 continue;
 335               break;
 336             case HEX_00YY:
 337               if ((nib4 & 0xc) != 0)
 338                 continue;
 339               break;
 340             case HEX_4:
 341               if ((nib4 & 0xc) != 4)
 342                 continue;
 343               break;
 344             default:
 345               abort ();
 346             }
 347           fprintf_fn (stream, "%s%s\t", dc, op->name);
 348           for (n = 0; n < 3 && op->arg[n] != A_END; n++)
 349             {
 350               if (n && op->arg[1] != A_END)
 351                 fprintf_fn (stream, ",");
 352               switch (op->arg[n])
 353                 {
 354                 case DSP_REG_N:
 355                   print_dsp_reg (field_b & 0xf, fprintf_fn, stream);
 356                   break;
 357                 case DSP_REG_X:
 358                   fprintf_fn (stream, "%s", sx_tab[(field_b >> 6) & 3]);
 359                   break;
 360                 case DSP_REG_Y:
 361                   fprintf_fn (stream, "%s", sy_tab[(field_b >> 4) & 3]);
 362                   break;
 363                 case A_MACH:
 364                   fprintf_fn (stream, "mach");
 365                   break;
 366                 case A_MACL:
 367                   fprintf_fn (stream, "macl");
 368                   break;
 369                 default:
 370                   abort ();
 371                 }
 372             }
 373           return;
 374         }
 375     }
 376   /* Not found.  */
 377   fprintf_fn (stream, ".word 0x%x", field_b);
 378 }
 379
 380 /* FIXME mvs: movx insns print as ".word 0x%03x", insn & 0xfff
 381    (ie. the upper nibble is missing).  */
 382
 383 int
 384 print_insn_sh (bfd_vma memaddr, struct disassemble_info *info)
 385 {
 386   fprintf_ftype fprintf_fn = info->fprintf_func;
 387   void *stream = info->stream;
 388   unsigned char insn[4];
 389   unsigned char nibs[8];
 390   int status;
 391   bfd_vma relmask = ~(bfd_vma) 0;
 392   const sh_opcode_info *op;
 393   unsigned int target_arch;
 394   int allow_op32;
 395
 396   switch (info->mach)
 397     {
 398     case bfd_mach_sh:
 399       target_arch = arch_sh1;
 400       /* SH coff object files lack information about the machine type, so
 401          we end up with bfd_mach_sh unless it was set explicitly (which
 402          could have happended if this is a call from gdb or the simulator.)  */
 403       if (info->symbols
 404           && bfd_asymbol_flavour(*info->symbols) == bfd_target_coff_flavour)
 405         target_arch = arch_sh4;
 406       break;
 407     case bfd_mach_sh5:
 408 #ifdef INCLUDE_SHMEDIA
 409       status = print_insn_sh64 (memaddr, info);
 410       if (status != -2)
 411         return status;
 412 #endif
 413       /* When we get here for sh64, it's because we want to disassemble
 414          SHcompact, i.e. arch_sh4.  */
 415       target_arch = arch_sh4;
 416       break;
 417     default:
 418       target_arch = sh_get_arch_from_bfd_mach (info->mach);
 419     }
 420
 421   status = info->read_memory_func (memaddr, insn, 2, info);
 422
 423   if (status != 0)
 424     {
 425       info->memory_error_func (status, memaddr, info);
 426       return -1;
 427     }
 428
 429   if (info->endian == BFD_ENDIAN_LITTLE)
 430     {
 431       nibs[0] = (insn[1] >> 4) & 0xf;
 432       nibs[1] = insn[1] & 0xf;
 433
 434       nibs[2] = (insn[0] >> 4) & 0xf;
 435       nibs[3] = insn[0] & 0xf;
 436     }
 437   else
 438     {
 439       nibs[0] = (insn[0] >> 4) & 0xf;
 440       nibs[1] = insn[0] & 0xf;
 441
 442       nibs[2] = (insn[1] >> 4) & 0xf;
 443       nibs[3] = insn[1] & 0xf;
 444     }
 445   status = info->read_memory_func (memaddr + 2, insn + 2, 2, info);
 446   if (status != 0)
 447     allow_op32 = 0;
 448   else
 449     {
 450       allow_op32 = 1;
 451
 452       if (info->endian == BFD_ENDIAN_LITTLE)
 453         {
 454           nibs[4] = (insn[3] >> 4) & 0xf;
 455           nibs[5] = insn[3] & 0xf;
 456
 457           nibs[6] = (insn[2] >> 4) & 0xf;
 458           nibs[7] = insn[2] & 0xf;
 459         }
 460       else
 461         {
 462           nibs[4] = (insn[2] >> 4) & 0xf;
 463           nibs[5] = insn[2] & 0xf;
 464
 465           nibs[6] = (insn[3] >> 4) & 0xf;
 466           nibs[7] = insn[3] & 0xf;
 467         }
 468     }
 469
 470   if (nibs[0] == 0xf && (nibs[1] & 4) == 0
 471       && SH_MERGE_ARCH_SET_VALID (target_arch, arch_sh_dsp_up))
 472     {
 473       if (nibs[1] & 8)
 474         {
 475           int field_b;
 476
 477           status = info->read_memory_func (memaddr + 2, insn, 2, info);
 478
 479           if (status != 0)
 480             {
 481               info->memory_error_func (status, memaddr + 2, info);
 482               return -1;
 483             }
 484
 485           if (info->endian == BFD_ENDIAN_LITTLE)
 486             field_b = insn[1] << 8 | insn[0];
 487           else
 488             field_b = insn[0] << 8 | insn[1];
 489
 490           print_insn_ppi (field_b, info);
 491           print_insn_ddt ((nibs[1] << 8) | (nibs[2] << 4) | nibs[3], info);
 492           return 4;
 493         }
 494       print_insn_ddt ((nibs[1] << 8) | (nibs[2] << 4) | nibs[3], info);
 495       return 2;
 496     }
 497   for (op = sh_table; op->name; op++)
 498     {
 499       int n;
 500       int imm = 0;
 501       int rn = 0;
 502       int rm = 0;
 503       int rb = 0;
 504       int disp_pc;
 505       bfd_vma disp_pc_addr = 0;
 506       int disp = 0;
 507       int has_disp = 0;
 508       int max_n = SH_MERGE_ARCH_SET (op->arch, arch_op32) ? 8 : 4;
 509
 510       if (!allow_op32
 511           && SH_MERGE_ARCH_SET (op->arch, arch_op32))
 512         goto fail;
 513
 514       if (!SH_MERGE_ARCH_SET_VALID (op->arch, target_arch))
 515         goto fail;
 516       for (n = 0; n < max_n; n++)
 517         {
 518           int i = op->nibbles[n];
 519
 520           if (i < 16)
 521             {
 522               if (nibs[n] == i)
 523                 continue;
 524               goto fail;
 525             }
 526           switch (i)
 527             {
 528             case BRANCH_8:
 529               imm = (nibs[2] << 4) | (nibs[3]);
 530               if (imm & 0x80)
 531                 imm |= ~0xff;
 532               imm = ((char) imm) * 2 + 4;
 533               goto ok;
 534             case BRANCH_12:
 535               imm = ((nibs[1]) << 8) | (nibs[2] << 4) | (nibs[3]);
 536               if (imm & 0x800)
 537                 imm |= ~0xfff;
 538               imm = imm * 2 + 4;
 539               goto ok;
 540             case IMM0_3c:
 541               if (nibs[3] & 0x8)
 542                 goto fail;
 543               imm = nibs[3] & 0x7;
 544               break;
 545             case IMM0_3s:
 546               if (!(nibs[3] & 0x8))
 547                 goto fail;
 548               imm = nibs[3] & 0x7;
 549               break;
 550             case IMM0_3Uc:
 551               if (nibs[2] & 0x8)
 552                 goto fail;
 553               imm = nibs[2] & 0x7;
 554               break;
 555             case IMM0_3Us:
 556               if (!(nibs[2] & 0x8))
 557                 goto fail;
 558               imm = nibs[2] & 0x7;
 559               break;
 560             case DISP0_12:
 561             case DISP1_12:
 562               disp = (nibs[5] << 8) | (nibs[6] << 4) | nibs[7];
 563               has_disp = 1;
 564               goto ok;
 565             case DISP0_12BY2:
 566             case DISP1_12BY2:
 567               disp = ((nibs[5] << 8) | (nibs[6] << 4) | nibs[7]) << 1;
 568               relmask = ~(bfd_vma) 1;
 569               has_disp = 1;
 570               goto ok;
 571             case DISP0_12BY4:
 572             case DISP1_12BY4:
 573               disp = ((nibs[5] << 8) | (nibs[6] << 4) | nibs[7]) << 2;
 574               relmask = ~(bfd_vma) 3;
 575               has_disp = 1;
 576               goto ok;
 577             case DISP0_12BY8:
 578             case DISP1_12BY8:
 579               disp = ((nibs[5] << 8) | (nibs[6] << 4) | nibs[7]) << 3;
 580               relmask = ~(bfd_vma) 7;
 581               has_disp = 1;
 582               goto ok;
 583             case IMM0_20_4:
 584               break;
 585             case IMM0_20:
 586               imm = ((nibs[2] << 16) | (nibs[4] << 12) | (nibs[5] << 8)
 587                      | (nibs[6] << 4) | nibs[7]);
 588               if (imm & 0x80000)
 589                 imm -= 0x100000;
 590               goto ok;
 591             case IMM0_20BY8:
 592               imm = ((nibs[2] << 16) | (nibs[4] << 12) | (nibs[5] << 8)
 593                      | (nibs[6] << 4) | nibs[7]);
 594               imm <<= 8;
 595               if (imm & 0x8000000)
 596                 imm -= 0x10000000;
 597               goto ok;
 598             case IMM0_4:
 599             case IMM1_4:
 600               imm = nibs[3];
 601               goto ok;
 602             case IMM0_4BY2:
 603             case IMM1_4BY2:
 604               imm = nibs[3] << 1;
 605               goto ok;
 606             case IMM0_4BY4:
 607             case IMM1_4BY4:
 608               imm = nibs[3] << 2;
 609               goto ok;
 610             case IMM0_8:
 611             case IMM1_8:
 612               imm = (nibs[2] << 4) | nibs[3];
 613               disp = imm;
 614               has_disp = 1;
 615               if (imm & 0x80)
 616                 imm -= 0x100;
 617               goto ok;
 618             case PCRELIMM_8BY2:
 619               imm = ((nibs[2] << 4) | nibs[3]) << 1;
 620               relmask = ~(bfd_vma) 1;
 621               goto ok;
 622             case PCRELIMM_8BY4:
 623               imm = ((nibs[2] << 4) | nibs[3]) << 2;
 624               relmask = ~(bfd_vma) 3;
 625               goto ok;
 626             case IMM0_8BY2:
 627             case IMM1_8BY2:
 628               imm = ((nibs[2] << 4) | nibs[3]) << 1;
 629               goto ok;
 630             case IMM0_8BY4:
 631             case IMM1_8BY4:
 632               imm = ((nibs[2] << 4) | nibs[3]) << 2;
 633               goto ok;
 634             case REG_N_D:
 635               if ((nibs[n] & 1) != 0)
 636                 goto fail;
 637               /* Fall through.  */
 638             case REG_N:
 639               rn = nibs[n];
 640               break;
 641             case REG_M:
 642               rm = nibs[n];
 643               break;
 644             case REG_N_B01:
 645               if ((nibs[n] & 0x3) != 1 /* binary 01 */)
 646                 goto fail;
 647               rn = (nibs[n] & 0xc) >> 2;
 648               break;
 649             case REG_NM:
 650               rn = (nibs[n] & 0xc) >> 2;
 651               rm = (nibs[n] & 0x3);
 652               break;
 653             case REG_B:
 654               rb = nibs[n] & 0x07;
 655               break;
 656             case SDT_REG_N:
 657               /* sh-dsp: single data transfer.  */
 658               rn = nibs[n];
 659               if ((rn & 0xc) != 4)
 660                 goto fail;
 661               rn = rn & 0x3;
 662               rn |= (!(rn & 2)) << 2;
 663               break;
 664             case PPI:
 665             case REPEAT:
 666               goto fail;
 667             default:
 668               abort ();
 669             }
 670         }
 671
 672     ok:
 673       /* sh2a has D_REG but not X_REG.  We don't know the pattern
 674          doesn't match unless we check the output args to see if they
 675          make sense.  */
 676       if (target_arch == arch_sh2a
 677           && ((op->arg[0] == DX_REG_M && (rm & 1) != 0)
 678               || (op->arg[1] == DX_REG_N && (rn & 1) != 0)))
 679         goto fail;
 680
 681       fprintf_fn (stream, "%s\t", op->name);
 682       disp_pc = 0;
 683       for (n = 0; n < 3 && op->arg[n] != A_END; n++)
 684         {
 685           if (n && op->arg[1] != A_END)
 686             fprintf_fn (stream, ",");
 687           switch (op->arg[n])
 688             {
 689             case A_IMM:
 690               fprintf_fn (stream, "#%d", imm);
 691               break;
 692             case A_R0:
 693               fprintf_fn (stream, "r0");
 694               break;
 695             case A_REG_N:
 696               fprintf_fn (stream, "r%d", rn);
 697               break;
 698             case A_INC_N:
 699             case AS_INC_N:
 700               fprintf_fn (stream, "@r%d+", rn);
 701               break;
 702             case A_DEC_N:
 703             case AS_DEC_N:
 704               fprintf_fn (stream, "@-r%d", rn);
 705               break;
 706             case A_IND_N:
 707             case AS_IND_N:
 708               fprintf_fn (stream, "@r%d", rn);
 709               break;
 710             case A_DISP_REG_N:
 711               fprintf_fn (stream, "@(%d,r%d)", has_disp?disp:imm, rn);
 712               break;
 713             case AS_PMOD_N:
 714               fprintf_fn (stream, "@r%d+r8", rn);
 715               break;
 716             case A_REG_M:
 717               fprintf_fn (stream, "r%d", rm);
 718               break;
 719             case A_INC_M:
 720               fprintf_fn (stream, "@r%d+", rm);
 721               break;
 722             case A_DEC_M:
 723               fprintf_fn (stream, "@-r%d", rm);
 724               break;
 725             case A_IND_M:
 726               fprintf_fn (stream, "@r%d", rm);
 727               break;
 728             case A_DISP_REG_M:
 729               fprintf_fn (stream, "@(%d,r%d)", has_disp?disp:imm, rm);
 730               break;
 731             case A_REG_B:
 732               fprintf_fn (stream, "r%d_bank", rb);
 733               break;
 734             case A_DISP_PC:
 735               disp_pc = 1;
 736               disp_pc_addr = imm + 4 + (memaddr & relmask);
 737               (*info->print_address_func) (disp_pc_addr, info);
 738               break;
 739             case A_IND_R0_REG_N:
 740               fprintf_fn (stream, "@(r0,r%d)", rn);
 741               break;
 742             case A_IND_R0_REG_M:
 743               fprintf_fn (stream, "@(r0,r%d)", rm);
 744               break;
 745             case A_DISP_GBR:
 746               fprintf_fn (stream, "@(%d,gbr)", has_disp?disp:imm);
 747               break;
 748             case A_TBR:
 749               fprintf_fn (stream, "tbr");
 750               break;
 751             case A_DISP2_TBR:
 752               fprintf_fn (stream, "@@(%d,tbr)", has_disp?disp:imm);
 753               break;
 754             case A_INC_R15:
 755               fprintf_fn (stream, "@r15+");
 756               break;
 757             case A_DEC_R15:
 758               fprintf_fn (stream, "@-r15");
 759               break;
 760             case A_R0_GBR:
 761               fprintf_fn (stream, "@(r0,gbr)");
 762               break;
 763             case A_BDISP12:
 764             case A_BDISP8:
 765               (*info->print_address_func) (imm + memaddr, info);
 766               break;
 767             case A_SR:
 768               fprintf_fn (stream, "sr");
 769               break;
 770             case A_GBR:
 771               fprintf_fn (stream, "gbr");
 772               break;
 773             case A_VBR:
 774               fprintf_fn (stream, "vbr");
 775               break;
 776             case A_DSR:
 777               fprintf_fn (stream, "dsr");
 778               break;
 779             case A_MOD:
 780               fprintf_fn (stream, "mod");
 781               break;
 782             case A_RE:
 783               fprintf_fn (stream, "re");
 784               break;
 785             case A_RS:
 786               fprintf_fn (stream, "rs");
 787               break;
 788             case A_A0:
 789               fprintf_fn (stream, "a0");
 790               break;
 791             case A_X0:
 792               fprintf_fn (stream, "x0");
 793               break;
 794             case A_X1:
 795               fprintf_fn (stream, "x1");
 796               break;
 797             case A_Y0:
 798               fprintf_fn (stream, "y0");
 799               break;
 800             case A_Y1:
 801               fprintf_fn (stream, "y1");
 802               break;
 803             case DSP_REG_M:
 804               print_dsp_reg (rm, fprintf_fn, stream);
 805               break;
 806             case A_SSR:
 807               fprintf_fn (stream, "ssr");
 808               break;
 809             case A_SPC:
 810               fprintf_fn (stream, "spc");
 811               break;
 812             case A_MACH:
 813               fprintf_fn (stream, "mach");
 814               break;
 815             case A_MACL:
 816               fprintf_fn (stream, "macl");
 817               break;
 818             case A_PR:
 819               fprintf_fn (stream, "pr");
 820               break;
 821             case A_SGR:
 822               fprintf_fn (stream, "sgr");
 823               break;
 824             case A_DBR:
 825               fprintf_fn (stream, "dbr");
 826               break;
 827             case F_REG_N:
 828               fprintf_fn (stream, "fr%d", rn);
 829               break;
 830             case F_REG_M:
 831               fprintf_fn (stream, "fr%d", rm);
 832               break;
 833             case DX_REG_N:
 834               if (rn & 1)
 835                 {
 836                   fprintf_fn (stream, "xd%d", rn & ~1);
 837                   break;
 838                 }
 839               /* Fall through.  */
 840             case D_REG_N:
 841               fprintf_fn (stream, "dr%d", rn);
 842               break;
 843             case DX_REG_M:
 844               if (rm & 1)
 845                 {
 846                   fprintf_fn (stream, "xd%d", rm & ~1);
 847                   break;
 848                 }
 849               /* Fall through.  */
 850             case D_REG_M:
 851               fprintf_fn (stream, "dr%d", rm);
 852               break;
 853             case FPSCR_M:
 854             case FPSCR_N:
 855               fprintf_fn (stream, "fpscr");
 856               break;
 857             case FPUL_M:
 858             case FPUL_N:
 859               fprintf_fn (stream, "fpul");
 860               break;
 861             case F_FR0:
 862               fprintf_fn (stream, "fr0");
 863               break;
 864             case V_REG_N:
 865               fprintf_fn (stream, "fv%d", rn * 4);
 866               break;
 867             case V_REG_M:
 868               fprintf_fn (stream, "fv%d", rm * 4);
 869               break;
 870             case XMTRX_M4:
 871               fprintf_fn (stream, "xmtrx");
 872               break;
 873             default:
 874               abort ();
 875             }
 876         }
 877
 878 #if 0
 879       /* This code prints instructions in delay slots on the same line
 880          as the instruction which needs the delay slots.  This can be
 881          confusing, since other disassembler don't work this way, and
 882          it means that the instructions are not all in a line.  So I
 883          disabled it.  Ian.  */
 884       if (!(info->flags & 1)
 885           && (op->name[0] == 'j'
 886               || (op->name[0] == 'b'
 887                   && (op->name[1] == 'r'
 888                       || op->name[1] == 's'))
 889               || (op->name[0] == 'r' && op->name[1] == 't')
 890               || (op->name[0] == 'b' && op->name[2] == '.')))
 891         {
 892           info->flags |= 1;
 893           fprintf_fn (stream, "\t(slot ");
 894           print_insn_sh (memaddr + 2, info);
 895           info->flags &= ~1;
 896           fprintf_fn (stream, ")");
 897           return 4;
 898         }
 899 #endif
 900
 901       if (disp_pc && strcmp (op->name, "mova") != 0)
 902         {
 903           int size;
 904           bfd_byte bytes[4];
 905
 906           if (relmask == ~(bfd_vma) 1)
 907             size = 2;
 908           else
 909             size = 4;
 910           /* Not reading an instruction - disable stop_vma.  */
 911           info->stop_vma = 0;
 912           status = info->read_memory_func (disp_pc_addr, bytes, size, info);
 913           if (status == 0)
 914             {
 915               unsigned int val;
 916
 917               if (size == 2)
 918                 {
 919                   if (info->endian == BFD_ENDIAN_LITTLE)
 920                     val = bfd_getl16 (bytes);
 921                   else
 922                     val = bfd_getb16 (bytes);
 923                 }
 924               else
 925                 {
 926                   if (info->endian == BFD_ENDIAN_LITTLE)
 927                     val = bfd_getl32 (bytes);
 928                   else
 929                     val = bfd_getb32 (bytes);
 930                 }
 931               if ((*info->symbol_at_address_func) (val, info))
 932                 {
 933                   fprintf_fn (stream, "\t! ");
 934                   (*info->print_address_func) (val, info);
 935                 }
 936               else
 937                 fprintf_fn (stream, "\t! %x", val);
 938             }
 939         }
 940
 941       return SH_MERGE_ARCH_SET (op->arch, arch_op32) ? 4 : 2;
 942     fail:
 943       ;
 944
 945     }
 946   fprintf_fn (stream, ".word 0x%x%x%x%x", nibs[0], nibs[1], nibs[2], nibs[3]);
 947   return 2;
 948 }