opcodes/hppa-dis.c

   1 /* Disassembler for the PA-RISC. Somewhat derived from sparc-pinsn.c.
   2    Copyright 1989, 1990, 1992, 1993 Free Software Foundation, Inc.
   3
   4    Contributed by the Center for Software Science at the
   5    University of Utah (pa-gdb-bugs@cs.utah.edu).
   6
   7 This program 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 2 of the License, or
  10 (at your option) any later version.
  11
  12 This program is distributed in the hope that it will be useful,
  13 but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 GNU General Public 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
  20
  21 #include <ansidecl.h>
  22 #include "sysdep.h"
  23 #include "dis-asm.h"
  24 #include "libhppa.h"
  25 #include "opcode/hppa.h"
  26
  27 /* Integer register names, indexed by the numbers which appear in the
  28    opcodes.  */
  29 static const char *const reg_names[] =
  30  {"flags", "r1", "rp", "r3", "r4", "r5", "r6", "r7", "r8", "r9",
  31   "r10", "r11", "r12", "r13", "r14", "r15", "r16", "r17", "r18", "r19",
  32   "r20", "r21", "r22", "r23", "r24", "r25", "r26", "dp", "ret0", "ret1",
  33   "sp", "r31"};
  34
  35 /* Floating point register names, indexed by the numbers which appear in the
  36    opcodes.  */
  37 static const char *const fp_reg_names[] =
  38  {"fpsr", "fpe2", "fpe4", "fpe6",
  39   "fr4", "fr5", "fr6", "fr7", "fr8",
  40   "fr9", "fr10", "fr11", "fr12", "fr13", "fr14", "fr15",
  41   "fr16", "fr17", "fr18", "fr19", "fr20", "fr21", "fr22", "fr23",
  42   "fr24", "fr25", "fr26", "fr27", "fr28", "fr29", "fr30", "fr31"};
  43
  44 typedef unsigned int CORE_ADDR;
  45
  46 /* Get at various relevent fields of an instruction word. */
  47
  48 #define MASK_5 0x1f
  49 #define MASK_11 0x7ff
  50 #define MASK_14 0x3fff
  51 #define MASK_21 0x1fffff
  52
  53 /* This macro gets bit fields using HP's numbering (MSB = 0) */
  54
  55 #define GET_FIELD(X, FROM, TO) \
  56   ((X) >> (31 - (TO)) & ((1 << ((TO) - (FROM) + 1)) - 1))
  57
  58 /* Some of these have been converted to 2-d arrays because they
  59    consume less storage this way.  If the maintenance becomes a
  60    problem, convert them back to const 1-d pointer arrays.  */
  61 static const char control_reg[][6] = {
  62   "rctr", "cr1", "cr2", "cr3", "cr4", "cr5", "cr6", "cr7",
  63   "pidr1", "pidr2", "ccr", "sar", "pidr3", "pidr4",
  64   "iva", "eiem", "itmr", "pcsq", "pcoq", "iir", "isr",
  65   "ior", "ipsw", "eirr", "tr0", "tr1", "tr2", "tr3",
  66   "tr4", "tr5", "tr6", "tr7"
  67 };
  68
  69 static const char compare_cond_names[][5] = {
  70   "", ",=", ",<", ",<=", ",<<", ",<<=", ",sv", ",od",
  71   ",tr", ",<>", ",>=", ",>", ",>>=", ",>>", ",nsv", ",ev"
  72 };
  73 static const char compare_cond_64_names[][6] = {
  74   "", ",*=", ",*<", ",*<=", ",*<<", ",*<<=", ",*sv", ",*od",
  75   ",*tr", ",*<>", ",*>=", ",*>", ",*>>=", ",*>>", ",*nsv", ",*ev"
  76 };
  77 static const char cmpib_cond_64_names[][6] = {
  78   ",*<<", ",*=", ",*<", ",*<=", ",*>>=", ",*<>", ",*>=", ",*>"
  79 };
  80 static const char add_cond_names[][5] = {
  81   "", ",=", ",<", ",<=", ",nuv", ",znv", ",sv", ",od",
  82   ",tr", ",<>", ",>=", ",>", ",uv", ",vnz", ",nsv", ",ev"
  83 };
  84 static const char add_cond_64_names[][6] = {
  85   ",*", ",*=", ",*<", ",*<=", ",*nuv", ",*znv", ",*sv", ",*od",
  86   ",*tr", ",*<>", ",*>=", ",*>", ",*uv", ",*vnz", ",*nsv", ",*ev"
  87 };
  88 static const char wide_add_cond_names[][5] = {
  89   "", ",=", ",<", ",<=", ",nuv", ",*=", ",*<", ",*<=",
  90   ",tr", ",<>", ",>=", ",>", ",uv", ",*<>", ",*>=", ",*>"
  91 };
  92 static const char *const logical_cond_names[] = {
  93   "", ",=", ",<", ",<=", 0, 0, 0, ",od",
  94   ",tr", ",<>", ",>=", ",>", 0, 0, 0, ",ev"};
  95 static const char *const logical_cond_64_names[] = {
  96   ",*", ",*=", ",*<", ",*<=", 0, 0, 0, ",*od",
  97   ",*tr", ",*<>", ",*>=", ",*>", 0, 0, 0, ",*ev"};
  98 static const char *const unit_cond_names[] = {
  99   "", 0, ",sbz", ",shz", ",sdc", 0, ",sbc", ",shc",
 100   ",tr", 0, ",nbz", ",nhz", ",ndc", 0, ",nbc", ",nhc"
 101 };
 102 static const char *const unit_cond_64_names[] = {
 103   ",*", ",*swz", ",*sbz", ",*shz", ",*sdc", ",*swc", ",*sbc", ",*shc",
 104   ",*tr", ",*nwz", ",*nbz", ",*nhz", ",*ndc", ",*nwc", ",*nbc", ",*nhc"
 105 };
 106 static const char shift_cond_names[][4] = {
 107   "", ",=", ",<", ",od", ",tr", ",<>", ",>=", ",ev"
 108 };
 109 static const char shift_cond_64_names[][5] = {
 110   ",*", ",*=", ",*<", ",*od", ",*tr", ",*<>", ",*>=", ",*ev"
 111 };
 112 static const char bb_cond_64_names[][5] = {
 113   ",*<", ",*>="
 114 };
 115 static const char index_compl_names[][4] = {"", ",m", ",s", ",sm"};
 116 static const char short_ldst_compl_names[][4] = {"", ",ma", "", ",mb"};
 117 static const char *const short_bytes_compl_names[] = {
 118   "", ",b,m", ",e", ",e,m"
 119 };
 120 static const char *const float_format_names[] = {",sgl", ",dbl", "", ",quad"};
 121 static const char float_comp_names[][8] =
 122 {
 123   ",false?", ",false", ",?", ",!<=>", ",=", ",=t", ",?=", ",!<>",
 124   ",!?>=", ",<", ",?<", ",!>=", ",!?>", ",<=", ",?<=", ",!>",
 125   ",!?<=", ",>", ",?>", ",!<=", ",!?<", ",>=", ",?>=", ",!<",
 126   ",!?=", ",<>", ",!=", ",!=t", ",!?", ",<=>", ",true?", ",true"
 127 };
 128
 129 /* For a bunch of different instructions form an index into a
 130    completer name table. */
 131 #define GET_COMPL(insn) (GET_FIELD (insn, 26, 26) | \
 132                          GET_FIELD (insn, 18, 18) << 1)
 133
 134 #define GET_COND(insn) (GET_FIELD ((insn), 16, 18) + \
 135                         (GET_FIELD ((insn), 19, 19) ? 8 : 0))
 136
 137 /* Utility function to print registers.  Put these first, so gcc's function
 138    inlining can do its stuff.  */
 139
 140 #define fputs_filtered(STR,F)   (*info->fprintf_func) (info->stream, "%s", STR)
 141
 142 static void
 143 fput_reg (reg, info)
 144      unsigned reg;
 145      disassemble_info *info;
 146 {
 147   (*info->fprintf_func) (info->stream, reg ? reg_names[reg] : "r0");
 148 }
 149
 150 static void
 151 fput_fp_reg (reg, info)
 152      unsigned reg;
 153      disassemble_info *info;
 154 {
 155   (*info->fprintf_func) (info->stream, reg ? fp_reg_names[reg] : "fr0");
 156 }
 157
 158 static void
 159 fput_fp_reg_r (reg, info)
 160      unsigned reg;
 161      disassemble_info *info;
 162 {
 163   /* Special case floating point exception registers.  */
 164   if (reg < 4)
 165     (*info->fprintf_func) (info->stream, "fpe%d", reg * 2 + 1);
 166   else
 167     (*info->fprintf_func) (info->stream, "%sR", reg ? fp_reg_names[reg]
 168                                                     : "fr0");
 169 }
 170
 171 static void
 172 fput_creg (reg, info)
 173      unsigned reg;
 174      disassemble_info *info;
 175 {
 176   (*info->fprintf_func) (info->stream, control_reg[reg]);
 177 }
 178
 179 /* print constants with sign */
 180
 181 static void
 182 fput_const (num, info)
 183      unsigned num;
 184      disassemble_info *info;
 185 {
 186   if ((int)num < 0)
 187     (*info->fprintf_func) (info->stream, "-%x", -(int)num);
 188   else
 189     (*info->fprintf_func) (info->stream, "%x", num);
 190 }
 191
 192 /* Routines to extract various sized constants out of hppa
 193    instructions. */
 194
 195 /* extract a 3-bit space register number from a be, ble, mtsp or mfsp */
 196 static int
 197 extract_3 (word)
 198      unsigned word;
 199 {
 200   return GET_FIELD (word, 18, 18) << 2 | GET_FIELD (word, 16, 17);
 201 }
 202
 203 static int
 204 extract_5_load (word)
 205      unsigned word;
 206 {
 207   return low_sign_extend (word >> 16 & MASK_5, 5);
 208 }
 209
 210 /* extract the immediate field from a st{bhw}s instruction */
 211 static int
 212 extract_5_store (word)
 213      unsigned word;
 214 {
 215   return low_sign_extend (word & MASK_5, 5);
 216 }
 217
 218 /* extract the immediate field from a break instruction */
 219 static unsigned
 220 extract_5r_store (word)
 221      unsigned word;
 222 {
 223   return (word & MASK_5);
 224 }
 225
 226 /* extract the immediate field from a {sr}sm instruction */
 227 static unsigned
 228 extract_5R_store (word)
 229      unsigned word;
 230 {
 231   return (word >> 16 & MASK_5);
 232 }
 233
 234 /* extract the immediate field from a bb instruction */
 235 static unsigned
 236 extract_5Q_store (word)
 237      unsigned word;
 238 {
 239   return (word >> 21 & MASK_5);
 240 }
 241
 242 /* extract an 11 bit immediate field */
 243 static int
 244 extract_11 (word)
 245      unsigned word;
 246 {
 247   return low_sign_extend (word & MASK_11, 11);
 248 }
 249
 250 /* extract a 14 bit immediate field */
 251 static int
 252 extract_14 (word)
 253      unsigned word;
 254 {
 255   return low_sign_extend (word & MASK_14, 14);
 256 }
 257
 258 /* extract a 21 bit constant */
 259
 260 static int
 261 extract_21 (word)
 262      unsigned word;
 263 {
 264   int val;
 265
 266   word &= MASK_21;
 267   word <<= 11;
 268   val = GET_FIELD (word, 20, 20);
 269   val <<= 11;
 270   val |= GET_FIELD (word, 9, 19);
 271   val <<= 2;
 272   val |= GET_FIELD (word, 5, 6);
 273   val <<= 5;
 274   val |= GET_FIELD (word, 0, 4);
 275   val <<= 2;
 276   val |= GET_FIELD (word, 7, 8);
 277   return sign_extend (val, 21) << 11;
 278 }
 279
 280 /* extract a 12 bit constant from branch instructions */
 281
 282 static int
 283 extract_12 (word)
 284      unsigned word;
 285 {
 286   return sign_extend (GET_FIELD (word, 19, 28) |
 287                       GET_FIELD (word, 29, 29) << 10 |
 288                       (word & 0x1) << 11, 12) << 2;
 289 }
 290
 291 /* extract a 17 bit constant from branch instructions, returning the
 292    19 bit signed value. */
 293
 294 static int
 295 extract_17 (word)
 296      unsigned word;
 297 {
 298   return sign_extend (GET_FIELD (word, 19, 28) |
 299                       GET_FIELD (word, 29, 29) << 10 |
 300                       GET_FIELD (word, 11, 15) << 11 |
 301                       (word & 0x1) << 16, 17) << 2;
 302 }
 303
 304 /* Print one instruction.  */
 305 int
 306 print_insn_hppa (memaddr, info)
 307      bfd_vma memaddr;
 308      disassemble_info *info;
 309 {
 310   bfd_byte buffer[4];
 311   unsigned int insn, i;
 312
 313   {
 314     int status =
 315       (*info->read_memory_func) (memaddr, buffer, sizeof (buffer), info);
 316     if (status != 0)
 317       {
 318         (*info->memory_error_func) (status, memaddr, info);
 319         return -1;
 320       }
 321   }
 322
 323   insn = bfd_getb32 (buffer);
 324
 325   for (i = 0; i < NUMOPCODES; ++i)
 326     {
 327       const struct pa_opcode *opcode = &pa_opcodes[i];
 328       if ((insn & opcode->mask) == opcode->match)
 329         {
 330           register const char *s;
 331
 332           (*info->fprintf_func) (info->stream, "%s", opcode->name);
 333
 334           if (!strchr ("cfCY?-+nHNZFIu", opcode->args[0]))
 335             (*info->fprintf_func) (info->stream, " ");
 336           for (s = opcode->args; *s != '\0'; ++s)
 337             {
 338               switch (*s)
 339                 {
 340                 case 'x':
 341                   fput_reg (GET_FIELD (insn, 11, 15), info);
 342                   break;
 343                 case 'X':
 344                   if (GET_FIELD (insn, 25, 25))
 345                       fput_fp_reg_r (GET_FIELD (insn, 11, 15), info);
 346                   else
 347                       fput_fp_reg (GET_FIELD (insn, 11, 15), info);
 348                   break;
 349                 case 'b':
 350                   fput_reg (GET_FIELD (insn, 6, 10), info);
 351                   break;
 352                 case '^':
 353                   fput_creg (GET_FIELD (insn, 6, 10), info);
 354                   break;
 355                 case 'E':
 356                   fput_fp_reg (GET_FIELD (insn, 6, 10), info);
 357                   break;
 358                 case 't':
 359                   fput_reg (GET_FIELD (insn, 27, 31), info);
 360                   break;
 361                 case 'v':
 362                   if (GET_FIELD (insn, 25, 25))
 363                       fput_fp_reg_r (GET_FIELD (insn, 27, 31), info);
 364                   else
 365                       fput_fp_reg (GET_FIELD (insn, 27, 31), info);
 366                   break;
 367                 case 'y':
 368                   fput_fp_reg (GET_FIELD (insn, 27, 31), info);
 369                   break;
 370                 case '4':
 371                   {
 372                     int reg = GET_FIELD (insn, 6, 10);
 373
 374                     reg |= (GET_FIELD (insn, 26, 26) << 4);
 375                     fput_fp_reg (reg, info);
 376                     break;
 377                   }
 378                 case '6':
 379                   {
 380                     int reg = GET_FIELD (insn, 11, 15);
 381
 382                     reg |= (GET_FIELD (insn, 26, 26) << 4);
 383                     fput_fp_reg (reg, info);
 384                     break;
 385                   }
 386                 case '7':
 387                   {
 388                     int reg = GET_FIELD (insn, 27, 31);
 389
 390                     reg |= (GET_FIELD (insn, 26, 26) << 4);
 391                     fput_fp_reg (reg, info);
 392                     break;
 393                   }
 394                 case '8':
 395                   {
 396                     int reg = GET_FIELD (insn, 16, 20);
 397
 398                     reg |= (GET_FIELD (insn, 26, 26) << 4);
 399                     fput_fp_reg (reg, info);
 400                     break;
 401                   }
 402                 case '9':
 403                   {
 404                     int reg = GET_FIELD (insn, 21, 25);
 405
 406                     reg |= (GET_FIELD (insn, 26, 26) << 4);
 407                     fput_fp_reg (reg, info);
 408                     break;
 409                   }
 410                 case '5':
 411                   fput_const (extract_5_load (insn), info);
 412                   break;
 413                 case 's':
 414                   (*info->fprintf_func) (info->stream,
 415                                          "sr%d", GET_FIELD (insn, 16, 17));
 416                   break;
 417
 418                 case 'S':
 419                   (*info->fprintf_func) (info->stream, "sr%d", extract_3 (insn));
 420                   break;
 421                 case 'c':
 422                   (*info->fprintf_func) (info->stream, "%s ",
 423                                     index_compl_names[GET_COMPL (insn)]);
 424                   break;
 425                 case 'C':
 426                   (*info->fprintf_func) (info->stream, "%s ",
 427                                     short_ldst_compl_names[GET_COMPL (insn)]);
 428                   break;
 429                 case 'Y':
 430                   (*info->fprintf_func) (info->stream, "%s ",
 431                                     short_bytes_compl_names[GET_COMPL (insn)]);
 432                   break;
 433
 434                 /* Handle conditions.  */
 435                 case '?':
 436                   {
 437                     s++;
 438                     switch (*s)
 439                       {
 440                       case 'f':
 441                         (*info->fprintf_func) (info->stream, "%s ",
 442                                                float_comp_names[GET_FIELD
 443                                                                (insn, 27, 31)]);
 444                         break;
 445
 446                       /* these four conditions are for the set of instructions
 447                            which distinguish true/false conditions by opcode
 448                            rather than by the 'f' bit (sigh): comb, comib,
 449                            addb, addib */
 450                       case 't':
 451                         fputs_filtered (compare_cond_names[GET_FIELD (insn, 16,
 452                                                                       18)],
 453                                         info);
 454                         break;
 455                       case 'T':
 456                         fputs_filtered (compare_cond_names[GET_FIELD (insn, 16, 18)
 457                                                           + 8], info);
 458                         break;
 459                       case 'r':
 460                         fputs_filtered (compare_cond_64_names[GET_FIELD (insn, 16, 18)],
 461                                         info);
 462                         break;
 463                       case 'R':
 464                         fputs_filtered (compare_cond_64_names[GET_FIELD (insn, 16, 18)
 465                                                              + 8], info);
 466                         break;
 467                       case 'Q':
 468                         fputs_filtered (cmpib_cond_64_names[GET_FIELD (insn, 16, 18)],
 469                                         info);
 470                         break;
 471                       case 'n':
 472                         fputs_filtered (compare_cond_names[GET_FIELD (insn, 16,
 473                                                                       18)
 474                                         + GET_FIELD (insn, 4, 4) * 8], info);
 475                         break;
 476                       case '@':
 477                         fputs_filtered (add_cond_names[GET_FIELD (insn, 16, 18)
 478                                         + GET_FIELD (insn, 4, 4) * 8], info);
 479                         break;
 480                       case 's':
 481                         (*info->fprintf_func) (info->stream, "%s ",
 482                                                compare_cond_names[GET_COND (insn)]);
 483                         break;
 484                       case 'S':
 485                         (*info->fprintf_func) (info->stream, "%s ",
 486                                                compare_cond_64_names[GET_COND (insn)]);
 487                         break;
 488                       case 'a':
 489                         (*info->fprintf_func) (info->stream, "%s ",
 490                                                add_cond_names[GET_COND (insn)]);
 491                         break;
 492                       case 'A':
 493                         (*info->fprintf_func) (info->stream, "%s ",
 494                                                add_cond_64_names[GET_COND (insn)]);
 495                         break;
 496                       case 'd':
 497                         (*info->fprintf_func) (info->stream, "%s",
 498                                                add_cond_names[GET_FIELD (insn,
 499                                                                          16,
 500                                                                          18)]);
 501                         break;
 502                       case 'D':
 503                         (*info->fprintf_func) (info->stream, "%s",
 504                                                add_cond_names[GET_FIELD (insn,
 505                                                                          16, 18)
 506                                                               + 8]);
 507                         break;
 508                       case 'w':
 509                         (*info->fprintf_func)
 510                           (info->stream, "%s",
 511                            wide_add_cond_names[GET_FIELD (insn, 16, 18)]);
 512                         break;
 513
 514                       case 'W':
 515                         (*info->fprintf_func)
 516                           (info->stream, "%s",
 517                            wide_add_cond_names[GET_FIELD (insn, 16, 18) + 8]);
 518                         break;
 519
 520                       case 'l':
 521                         (*info->fprintf_func) (info->stream, "%s ",
 522                                                logical_cond_names[GET_COND (insn)]);
 523                         break;
 524                       case 'L':
 525                         (*info->fprintf_func) (info->stream, "%s ",
 526                                                logical_cond_64_names[GET_COND (insn)]);
 527                         break;
 528                       case 'u':
 529                         (*info->fprintf_func) (info->stream, "%s ",
 530                                                unit_cond_names[GET_COND (insn)]);
 531                         break;
 532                       case 'U':
 533                         (*info->fprintf_func) (info->stream, "%s ",
 534                                                unit_cond_64_names[GET_COND (insn)]);
 535                         break;
 536                       case 'y':
 537                       case 'x':
 538                       case 'b':
 539                         (*info->fprintf_func)
 540                           (info->stream, "%s",
 541                            shift_cond_names[GET_FIELD (insn, 16, 18)]);
 542
 543                         /* If the next character in args is 'n', it will handle
 544                            putting out the space.  */
 545                         if (s[1] != 'n')
 546                           (*info->fprintf_func) (info->stream, " ");
 547                         break;
 548                       case 'X':
 549                         (*info->fprintf_func) (info->stream, "%s",
 550                                                shift_cond_64_names[GET_FIELD (insn, 16, 18)]);
 551                         break;
 552                       case 'B':
 553                         (*info->fprintf_func)
 554                           (info->stream, "%s",
 555                            bb_cond_64_names[GET_FIELD (insn, 16, 16)]);
 556
 557                         /* If the next character in args is 'n', it will handle
 558                            putting out the space.  */
 559                         if (s[1] != 'n')
 560                           (*info->fprintf_func) (info->stream, " ");
 561                         break;
 562                       }
 563                     break;
 564                   }
 565
 566                 case 'V':
 567                   fput_const (extract_5_store (insn), info);
 568                   break;
 569                 case 'r':
 570                   fput_const (extract_5r_store (insn), info);
 571                   break;
 572                 case 'R':
 573                   fput_const (extract_5R_store (insn), info);
 574                   break;
 575                 case 'Q':
 576                   fput_const (extract_5Q_store (insn), info);
 577                   break;
 578                 case 'i':
 579                   fput_const (extract_11 (insn), info);
 580                   break;
 581                 case 'j':
 582                   fput_const (extract_14 (insn), info);
 583                   break;
 584                 case 'k':
 585                   fput_const (extract_21 (insn), info);
 586                   break;
 587                 case 'n':
 588                   if (insn & 0x2)
 589                     (*info->fprintf_func) (info->stream, ",n ");
 590                   else
 591                     (*info->fprintf_func) (info->stream, " ");
 592                   break;
 593                 case 'N':
 594                   if ((insn & 0x20) && s[1])
 595                     (*info->fprintf_func) (info->stream, ",n ");
 596                   else if (insn & 0x20)
 597                     (*info->fprintf_func) (info->stream, ",n");
 598                   else if (s[1])
 599                     (*info->fprintf_func) (info->stream, " ");
 600                   break;
 601                 case 'w':
 602                   (*info->print_address_func) (memaddr + 8 + extract_12 (insn),
 603                                                info);
 604                   break;
 605                 case 'W':
 606                   /* 17 bit PC-relative branch.  */
 607                   (*info->print_address_func) ((memaddr + 8
 608                                                 + extract_17 (insn)),
 609                                                info);
 610                   break;
 611                 case 'z':
 612                   /* 17 bit displacement.  This is an offset from a register
 613                      so it gets disasssembled as just a number, not any sort
 614                      of address.  */
 615                   fput_const (extract_17 (insn), info);
 616                   break;
 617                 case 'p':
 618                   (*info->fprintf_func) (info->stream, "%d",
 619                                     31 - GET_FIELD (insn, 22, 26));
 620                   break;
 621                 case 'P':
 622                   (*info->fprintf_func) (info->stream, "%d",
 623                                     GET_FIELD (insn, 22, 26));
 624                   break;
 625                 case 'T':
 626                   (*info->fprintf_func) (info->stream, "%d",
 627                                     32 - GET_FIELD (insn, 27, 31));
 628                   break;
 629                 case 'A':
 630                   fput_const (GET_FIELD (insn, 6, 18), info);
 631                   break;
 632                 case 'Z':
 633                   if (GET_FIELD (insn, 26, 26))
 634                     (*info->fprintf_func) (info->stream, ",m ");
 635                   else
 636                     (*info->fprintf_func) (info->stream, " ");
 637                   break;
 638                 case 'D':
 639                   fput_const (GET_FIELD (insn, 6, 31), info);
 640                   break;
 641                 case 'f':
 642                   (*info->fprintf_func) (info->stream, ",%d", GET_FIELD (insn, 23, 25));
 643                   break;
 644                 case 'O':
 645                   fput_const ((GET_FIELD (insn, 6,20) << 5 |
 646                                GET_FIELD (insn, 27, 31)), info);
 647                   break;
 648                 case 'o':
 649                   fput_const (GET_FIELD (insn, 6, 20), info);
 650                   break;
 651                 case '3':
 652                   {
 653                     int reg = GET_FIELD (insn, 21, 22);
 654                     reg |= GET_FIELD (insn, 16, 18) << 2;
 655                     if (GET_FIELD (insn, 23, 23) != 0)
 656                       fput_fp_reg_r (reg, info);
 657                     else
 658                       fput_fp_reg (reg, info);
 659                     break;
 660                   }
 661
 662                 case '2':
 663                   fput_const ((GET_FIELD (insn, 6, 22) << 5 |
 664                                GET_FIELD (insn, 27, 31)), info);
 665                   break;
 666                 case '1':
 667                   fput_const ((GET_FIELD (insn, 11, 20) << 5 |
 668                                GET_FIELD (insn, 27, 31)), info);
 669                   break;
 670                 case '0':
 671                   fput_const ((GET_FIELD (insn, 16, 20) << 5 |
 672                                GET_FIELD (insn, 27, 31)), info);
 673                   break;
 674                 case 'u':
 675                   (*info->fprintf_func) (info->stream, ",%d", GET_FIELD (insn, 23, 25));
 676                   break;
 677                 case 'F':
 678                   /* if no destination completer and not before a completer
 679                      for fcmp, need a space here */
 680                   if (GET_FIELD (insn, 21, 22) == 1 || s[1] == '?')
 681                     fputs_filtered (float_format_names[GET_FIELD (insn, 19, 20)],
 682                                     info);
 683                   else
 684                     (*info->fprintf_func) (info->stream, "%s ",
 685                                            float_format_names[GET_FIELD
 686                                                               (insn, 19, 20)]);
 687                   break;
 688                 case 'G':
 689                   (*info->fprintf_func) (info->stream, "%s ",
 690                                     float_format_names[GET_FIELD (insn,
 691                                                                   17, 18)]);
 692                   break;
 693                 case 'H':
 694                   if (GET_FIELD (insn, 26, 26) == 1)
 695                     (*info->fprintf_func) (info->stream, "%s ",
 696                                     float_format_names[0]);
 697                   else
 698                     (*info->fprintf_func) (info->stream, "%s ",
 699                                     float_format_names[1]);
 700                   break;
 701                 case 'I':
 702                   /* if no destination completer and not before a completer
 703                      for fcmp, need a space here */
 704                   if (GET_FIELD (insn, 21, 22) == 1 || s[1] == '?')
 705                     fputs_filtered (float_format_names[GET_FIELD (insn, 20, 20)],
 706                                     info);
 707                   else
 708                     (*info->fprintf_func) (info->stream, "%s ",
 709                                            float_format_names[GET_FIELD
 710                                                               (insn, 20, 20)]);
 711                   break;
 712                 case 'J':
 713                   if (GET_FIELD (insn, 24, 24))
 714                       fput_fp_reg_r (GET_FIELD (insn, 6, 10), info);
 715                   else
 716                       fput_fp_reg (GET_FIELD (insn, 6, 10), info);
 717
 718                   break;
 719                 case 'K':
 720                   if (GET_FIELD (insn, 19, 19))
 721                       fput_fp_reg_r (GET_FIELD (insn, 11, 15), info);
 722                   else
 723                       fput_fp_reg (GET_FIELD (insn, 11, 15), info);
 724                   break;
 725                 default:
 726                   (*info->fprintf_func) (info->stream, "%c", *s);
 727                   break;
 728                 }
 729             }
 730           return sizeof(insn);
 731         }
 732     }
 733   (*info->fprintf_func) (info->stream, "#%8x", insn);
 734   return sizeof(insn);
 735 }