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., 675 Mass Ave, Cambridge, MA 02139, USA.  */
  20
  21 #include <ansidecl.h>
  22 #include "sysdep.h"
  23 #include "dis-asm.h"
  24 #include "opcode/hppa.h"
  25
  26 /* Integer register names, indexed by the numbers which appear in the
  27    opcodes.  */
  28 static const char *const reg_names[] =
  29  {"flags", "r1", "rp", "r3", "r4", "r5", "r6", "r7", "r8", "r9",
  30   "r10", "r11", "r12", "r13", "r14", "r15", "r16", "r17", "r18", "r19",
  31   "r20", "r21", "r22", "arg3", "arg2", "arg1", "arg0", "dp", "ret0", "ret1",
  32   "sp", "r31"}
  33
  34 /* Floating point register names, indexed by the numbers which appear in the
  35    opcodes.  */
  36 static const char *const fp_reg_names[] =
  37  {"fpsr", "fpe2", "fpe4", "fpe6",
  38   "fr4", "fr5", "fr6", "fr7", "fr8",
  39   "fr9", "fr10", "fr11", "fr12", "fr13", "fr14", "fr15",
  40   "fr16", "fr17", "fr18", "fr19", "fr20", "fr21", "fr22", "fr23",
  41   "fr24", "fr25", "fr26", "fr27", "fr28", "fr29", "fr30", "fr31"};
  42
  43 typedef unsigned int CORE_ADDR;
  44
  45 /* Get at various relevent fields of an instruction word. */
  46
  47 #define MASK_5 0x1f
  48 #define MASK_11 0x7ff
  49 #define MASK_14 0x3fff
  50 #define MASK_21 0x1fffff
  51
  52 /* This macro gets bit fields using HP's numbering (MSB = 0) */
  53
  54 #define GET_FIELD(X, FROM, TO) \
  55   ((X) >> (31 - (TO)) & ((1 << ((TO) - (FROM) + 1)) - 1))
  56
  57 /* Some of these have been converted to 2-d arrays because they
  58    consume less storage this way.  If the maintenance becomes a
  59    problem, convert them back to const 1-d pointer arrays.  */
  60 static const char control_reg[][6] = {
  61   "rctr", "cr1", "cr2", "cr3", "cr4", "cr5", "cr6", "cr7",
  62   "pidr1", "pidr2", "ccr", "sar", "pidr3", "pidr4",
  63   "iva", "eiem", "itmr", "pcsq", "pcoq", "iir", "isr",
  64   "ior", "ipsw", "eirr", "tr0", "tr1", "tr2", "tr3",
  65   "tr4", "tr5", "tr6", "tr7"
  66 };
  67
  68 static const char compare_cond_names[][5] = {
  69   "", ",=", ",<", ",<=", ",<<", ",<<=", ",sv",
  70   ",od", ",tr", ",<>", ",>=", ",>", ",>>=",
  71   ",>>", ",nsv", ",ev"
  72 };
  73 static const char add_cond_names[][5] = {
  74   "", ",=", ",<", ",<=", ",nuv", ",znv", ",sv",
  75   ",od", ",tr", ",<>", ",>=", ",>", ",uv",
  76   ",vnz", ",nsv", ",ev"
  77 };
  78 static const char *const logical_cond_names[] = {
  79   "", ",=", ",<", ",<=", 0, 0, 0, ",od",
  80   ",tr", ",<>", ",>=", ",>", 0, 0, 0, ",ev"};
  81 static const char *const unit_cond_names[] = {
  82   "", 0, ",sbz", ",shz", ",sdc", 0, ",sbc", ",shc",
  83   ",tr", 0, ",nbz", ",nhz", ",ndc", 0, ",nbc", ",nhc"
  84 };
  85 static const char shift_cond_names[][4] = {
  86   "", ",=", ",<", ",od", ",tr", ",<>", ",>=", ",ev"
  87 };
  88 static const char index_compl_names[][4] = {"", ",m", ",s", ",sm"};
  89 static const char short_ldst_compl_names[][4] = {"", ",ma", "", ",mb"};
  90 static const char *const short_bytes_compl_names[] = {
  91   "", ",b,m", ",e", ",e,m"
  92 };
  93 static const char *const float_format_names[] = {",sgl", ",dbl", "", ",quad"};
  94 static const char float_comp_names[][8] =
  95 {
  96   ",false?", ",false", ",?", ",!<=>", ",=", ",=t", ",?=", ",!<>",
  97   ",!?>=", ",<", ",?<", ",!>=", ",!?>", ",<=", ",?<=", ",!>",
  98   ",!?<=", ",>", ",?>", ",!<=", ",!?<", ",>=", ",?>=", ",!<",
  99   ",!?=", ",<>", ",!=", ",!=t", ",!?", ",<=>", ",true?", ",true"
 100 };
 101
 102 /* For a bunch of different instructions form an index into a
 103    completer name table. */
 104 #define GET_COMPL(insn) (GET_FIELD (insn, 26, 26) | \
 105                          GET_FIELD (insn, 18, 18) << 1)
 106
 107 #define GET_COND(insn) (GET_FIELD ((insn), 16, 18) + \
 108                         (GET_FIELD ((insn), 19, 19) ? 8 : 0))
 109
 110 /* Utility function to print registers.  Put these first, so gcc's function
 111    inlining can do its stuff.  */
 112
 113 #define fputs_filtered(STR,F)   (*info->fprintf_func) (info->stream, "%s", STR)
 114
 115 static void
 116 fput_reg (reg, info)
 117      unsigned reg;
 118      disassemble_info *info;
 119 {
 120   (*info->fprintf_func) (info->stream, reg ? reg_names[reg] : "r0");
 121 }
 122
 123 static void
 124 fput_fp_reg (reg, info)
 125      unsigned reg;
 126      disassemble_info *info;
 127 {
 128   (*info->fprintf_func) (info->stream, reg ? fp_reg_names[reg] : "fr0");
 129 }
 130
 131 static void
 132 fput_fp_reg_r (reg, info)
 133      unsigned reg;
 134      disassemble_info *info;
 135 {
 136   /* Special case floating point exception registers.  */
 137   if (reg < 4)
 138     (*info->fprintf_func) (info->stream, "fpe%d", reg * 2 + 1);
 139   else
 140     (*info->fprintf_func) (info->stream, "%sR", reg ? fp_reg_names[reg]
 141                                                     : "fr0");
 142 }
 143
 144 static void
 145 fput_creg (reg, info)
 146      unsigned reg;
 147      disassemble_info *info;
 148 {
 149   (*info->fprintf_func) (info->stream, control_reg[reg]);
 150 }
 151
 152 /* print constants with sign */
 153
 154 static void
 155 fput_const (num, info)
 156      unsigned num;
 157      disassemble_info *info;
 158 {
 159   if ((int)num < 0)
 160     (*info->fprintf_func) (info->stream, "-%x", -(int)num);
 161   else
 162     (*info->fprintf_func) (info->stream, "%x", num);
 163 }
 164
 165 /* Routines to extract various sized constants out of hppa
 166    instructions. */
 167
 168 /* This assumes that no garbage lies outside of the lower bits of
 169    value. */
 170
 171 static int
 172 sign_extend (val, bits)
 173      unsigned val, bits;
 174 {
 175   return (int)(val >> (bits - 1) ? (-1 << bits) | val : val);
 176 }
 177
 178 /* For many immediate values the sign bit is the low bit! */
 179
 180 static int
 181 low_sign_extend (val, bits)
 182      unsigned val, bits;
 183 {
 184   return (int)((val & 0x1 ? (-1 << (bits - 1)) : 0) | val >> 1);
 185 }
 186 /* extract the immediate field from a ld{bhw}s instruction */
 187
 188 #if 0 /* not used */
 189 static unsigned
 190 get_field (val, from, to)
 191      unsigned val, from, to;
 192 {
 193   val = val >> (31 - to);
 194   return val & ((1 << (32 - from)) - 1);
 195 }
 196
 197 static unsigned
 198 set_field (val, from, to, new_val)
 199      unsigned *val, from, to, new_val;
 200 {
 201   unsigned mask = ~((1 << (to - from + 1)) << (31 - from));
 202   return *val = (*val & mask) | (new_val << (31 - from));
 203 }
 204 #endif
 205
 206 /* extract a 3-bit space register number from a be, ble, mtsp or mfsp */
 207 static int
 208 extract_3 (word)
 209      unsigned word;
 210 {
 211   return GET_FIELD (word, 18, 18) << 2 | GET_FIELD (word, 16, 17);
 212 }
 213
 214 static int
 215 extract_5_load (word)
 216      unsigned word;
 217 {
 218   return low_sign_extend (word >> 16 & MASK_5, 5);
 219 }
 220
 221 /* extract the immediate field from a st{bhw}s instruction */
 222 static int
 223 extract_5_store (word)
 224      unsigned word;
 225 {
 226   return low_sign_extend (word & MASK_5, 5);
 227 }
 228
 229 /* extract the immediate field from a break instruction */
 230 static unsigned
 231 extract_5r_store (word)
 232      unsigned word;
 233 {
 234   return (word & MASK_5);
 235 }
 236
 237 /* extract the immediate field from a {sr}sm instruction */
 238 static unsigned
 239 extract_5R_store (word)
 240      unsigned word;
 241 {
 242   return (word >> 16 & MASK_5);
 243 }
 244
 245 /* extract the immediate field from a bb instruction */
 246 static unsigned
 247 extract_5Q_store (word)
 248      unsigned word;
 249 {
 250   return (word >> 21 & MASK_5);
 251 }
 252
 253 /* extract an 11 bit immediate field */
 254 static int
 255 extract_11 (word)
 256      unsigned word;
 257 {
 258   return low_sign_extend (word & MASK_11, 11);
 259 }
 260
 261 /* extract a 14 bit immediate field */
 262 static int
 263 extract_14 (word)
 264      unsigned word;
 265 {
 266   return low_sign_extend (word & MASK_14, 14);
 267 }
 268
 269 #if 0
 270 /* deposit a 14 bit constant in a word */
 271 static unsigned
 272 deposit_14 (opnd, word)
 273      int opnd;
 274      unsigned word;
 275 {
 276   unsigned sign = (opnd < 0 ? 1 : 0);
 277
 278   return word | ((unsigned)opnd << 1 & MASK_14)  | sign;
 279 }
 280 #endif
 281
 282 /* extract a 21 bit constant */
 283
 284 static int
 285 extract_21 (word)
 286      unsigned word;
 287 {
 288   int val;
 289
 290   word &= MASK_21;
 291   word <<= 11;
 292   val = GET_FIELD (word, 20, 20);
 293   val <<= 11;
 294   val |= GET_FIELD (word, 9, 19);
 295   val <<= 2;
 296   val |= GET_FIELD (word, 5, 6);
 297   val <<= 5;
 298   val |= GET_FIELD (word, 0, 4);
 299   val <<= 2;
 300   val |= GET_FIELD (word, 7, 8);
 301   return sign_extend (val, 21) << 11;
 302 }
 303
 304 #if 0
 305 /* deposit a 21 bit constant in a word. Although 21 bit constants are
 306    usually the top 21 bits of a 32 bit constant, we assume that only
 307    the low 21 bits of opnd are relevant */
 308
 309 static unsigned
 310 deposit_21 (opnd, word)
 311      unsigned opnd, word;
 312 {
 313   unsigned val = 0;
 314
 315   val |= GET_FIELD (opnd, 11 + 14, 11 + 18);
 316   val <<= 2;
 317   val |= GET_FIELD (opnd, 11 + 12, 11 + 13);
 318   val <<= 2;
 319   val |= GET_FIELD (opnd, 11 + 19, 11 + 20);
 320   val <<= 11;
 321   val |= GET_FIELD (opnd, 11 + 1, 11 + 11);
 322   val <<= 1;
 323   val |= GET_FIELD (opnd, 11 + 0, 11 + 0);
 324   return word | val;
 325 }
 326 #endif
 327
 328 /* extract a 12 bit constant from branch instructions */
 329
 330 static int
 331 extract_12 (word)
 332      unsigned word;
 333 {
 334   return sign_extend (GET_FIELD (word, 19, 28) |
 335                       GET_FIELD (word, 29, 29) << 10 |
 336                       (word & 0x1) << 11, 12) << 2;
 337 }
 338
 339 /* extract a 17 bit constant from branch instructions, returning the
 340    19 bit signed value. */
 341
 342 static int
 343 extract_17 (word)
 344      unsigned word;
 345 {
 346   return sign_extend (GET_FIELD (word, 19, 28) |
 347                       GET_FIELD (word, 29, 29) << 10 |
 348                       GET_FIELD (word, 11, 15) << 11 |
 349                       (word & 0x1) << 16, 17) << 2;
 350 }
 351
 352 /* Print one instruction.  */
 353 int
 354 print_insn_hppa (memaddr, info)
 355      bfd_vma memaddr;
 356      disassemble_info *info;
 357 {
 358   unsigned int insn, i, op;
 359   FILE *stream = info->stream;
 360
 361   {
 362     int status =
 363       (*info->read_memory_func) (memaddr, (bfd_byte*) &insn, sizeof (insn),
 364                                  info);
 365     if (status != 0)
 366       {
 367         (*info->memory_error_func) (status, memaddr, info);
 368         return -1;
 369       }
 370   }
 371
 372   for (i = 0; i < NUMOPCODES; ++i)
 373     {
 374       const struct pa_opcode *opcode = &pa_opcodes[i];
 375       if ((insn & opcode->mask) == opcode->match)
 376         {
 377           register const char *s;
 378
 379           (*info->fprintf_func) (info->stream, "%s", opcode->name);
 380
 381           if (!strchr ("cCY<?!@-+&U>~nZFIMad", opcode->args[0]))
 382             (*info->fprintf_func) (info->stream, " ");
 383           for (s = opcode->args; *s != '\0'; ++s)
 384             {
 385               switch (*s)
 386                 {
 387                 case 'x':
 388                   fput_reg (GET_FIELD (insn, 11, 15), info);
 389                   break;
 390                 case 'X':
 391                   if (GET_FIELD (insn, 25, 25))
 392                       fput_fp_reg_r (GET_FIELD (insn, 11, 15), info);
 393                   else
 394                       fput_fp_reg (GET_FIELD (insn, 11, 15), info);
 395                   break;
 396                 case 'b':
 397                   fput_reg (GET_FIELD (insn, 6, 10), info);
 398                   break;
 399                 case '^':
 400                   fput_creg (GET_FIELD (insn, 6, 10), info);
 401                   break;
 402                 case 'E':
 403                   if (GET_FIELD (insn, 25, 25))
 404                       fput_fp_reg_r (GET_FIELD (insn, 6, 10), info);
 405                   else
 406                       fput_fp_reg (GET_FIELD (insn, 6, 10), info);
 407                   break;
 408                 case 't':
 409                   fput_reg (GET_FIELD (insn, 27, 31), info);
 410                   break;
 411                 case 'v':
 412                   if (GET_FIELD (insn, 25, 25))
 413                       fput_fp_reg_r (GET_FIELD (insn, 27, 31), info);
 414                   else
 415                       fput_fp_reg (GET_FIELD (insn, 27, 31), info);
 416                   break;
 417                 case 'y':
 418                   fput_fp_reg (GET_FIELD (insn, 27, 31), info);
 419                   break;
 420                 case '4':
 421                   fput_fp_reg (GET_FIELD (insn, 6, 10), info);
 422                   break;
 423                 case '6':
 424                   fput_fp_reg (GET_FIELD (insn, 11, 15), info);
 425                   break;
 426                 case '7':
 427                   fput_fp_reg (GET_FIELD (insn, 27, 31), info);
 428                   break;
 429                 case '8':
 430                   fput_fp_reg (GET_FIELD (insn, 16, 20), info);
 431                   break;
 432                 case '9':
 433                   fput_fp_reg (GET_FIELD (insn, 21, 25), info);
 434                   break;
 435                 case '5':
 436                   fput_const (extract_5_load (insn), info);
 437                   break;
 438                 case 's':
 439                   fprintf_filtered (stream, "sr%d", GET_FIELD (insn, 16, 17));
 440                   break;
 441                 case 'S':
 442                   (*info->fprintf_func) (info->stream, "sr%d", extract_3 (insn));
 443                   break;
 444                 case 'c':
 445                   (*info->fprintf_func) (info->stream, "%s ",
 446                                     index_compl_names[GET_COMPL (insn)]);
 447                   break;
 448                 case 'C':
 449                   (*info->fprintf_func) (info->stream, "%s ",
 450                                     short_ldst_compl_names[GET_COMPL (insn)]);
 451                   break;
 452                 case 'Y':
 453                   (*info->fprintf_func) (info->stream, "%s ",
 454                                     short_bytes_compl_names[GET_COMPL (insn)]);
 455                   break;
 456                 /* these four conditions are for the set of instructions
 457                    which distinguish true/false conditions by opcode rather
 458                    than by the 'f' bit (sigh): comb, comib, addb, addib */
 459                 case '<':
 460                   fputs_filtered (compare_cond_names[GET_FIELD (insn, 16, 18)],
 461                                   info);
 462                   break;
 463                 case '?':
 464                   fputs_filtered (compare_cond_names[GET_FIELD (insn, 16, 18) + 8],
 465                                   info);
 466                   break;
 467                 case '@':
 468                   fputs_filtered (add_cond_names[GET_FIELD (insn, 16, 18) + 8],
 469                                   info);
 470                   break;
 471                 case 'a':
 472                   (*info->fprintf_func) (info->stream, "%s ",
 473                                          compare_cond_names[GET_COND (insn)]);
 474                   break;
 475                 case 'd':
 476                   (*info->fprintf_func) (info->stream, "%s ",
 477                                          add_cond_names[GET_COND (insn)]);
 478                   break;
 479                 case '!':
 480                   (*info->fprintf_func) (info->stream, "%s",
 481                                     add_cond_names[GET_FIELD (insn, 16, 18)]);
 482                   break;
 483
 484                 case '&':
 485                   (*info->fprintf_func) (info->stream, "%s ",
 486                                     logical_cond_names[GET_COND (insn)]);
 487                   break;
 488                 case 'U':
 489                   (*info->fprintf_func) (info->stream, "%s ",
 490                                     unit_cond_names[GET_COND (insn)]);
 491                   break;
 492                 case '>':
 493                 case '~':
 494                   (*info->fprintf_func)
 495                     (info->stream, "%s",
 496                      shift_cond_names[GET_FIELD (insn, 16, 18)]);
 497
 498                   /* If the next character in args is 'n', it will handle
 499                      putting out the space.  */
 500                   if (s[1] != 'n')
 501                     (*info->fprintf_func) (info->stream, " ");
 502                   break;
 503                 case 'V':
 504                   fput_const (extract_5_store (insn), info);
 505                   break;
 506                 case 'r':
 507                   fput_const (extract_5r_store (insn), info);
 508                   break;
 509                 case 'R':
 510                   fput_const (extract_5R_store (insn), info);
 511                   break;
 512                 case 'Q':
 513                   fput_const (extract_5Q_store (insn), info);
 514                   break;
 515                 case 'i':
 516                   fput_const (extract_11 (insn), info);
 517                   break;
 518                 case 'j':
 519                   fput_const (extract_14 (insn), info);
 520                   break;
 521                 case 'k':
 522                   fput_const (extract_21 (insn), info);
 523                   break;
 524                 case 'n':
 525                   if (insn & 0x2)
 526                     (*info->fprintf_func) (info->stream, ",n ");
 527                   else
 528                     (*info->fprintf_func) (info->stream, " ");
 529                   break;
 530                 case 'w':
 531                   (*info->print_address_func) (memaddr + 8 + extract_12 (insn),
 532                                                info);
 533                   break;
 534                 case 'W':
 535                   /* don't interpret an address if it's an external branch
 536                      instruction. */
 537                   op = GET_FIELD (insn, 0, 5);
 538                   if (op != 0x38 /* be */ && op != 0x39 /* ble */)
 539                     (*info->print_address_func) ((memaddr + 8
 540                                                   + extract_17 (insn)),
 541                                                  info);
 542                   else
 543                     fput_const (extract_17 (insn), info);
 544                   break;
 545                 case 'p':
 546                   (*info->fprintf_func) (info->stream, "%d",
 547                                     31 - GET_FIELD (insn, 22, 26));
 548                   break;
 549                 case 'P':
 550                   (*info->fprintf_func) (info->stream, "%d",
 551                                     GET_FIELD (insn, 22, 26));
 552                   break;
 553                 case 'T':
 554                   (*info->fprintf_func) (info->stream, "%d",
 555                                     32 - GET_FIELD (insn, 27, 31));
 556                   break;
 557                 case 'A':
 558                   fput_const (GET_FIELD (insn, 6, 18), info);
 559                   break;
 560                 case 'Z':
 561                   if (GET_FIELD (insn, 26, 26))
 562                     (*info->fprintf_func) (info->stream, ",m ");
 563                   else
 564                     (*info->fprintf_func) (info->stream, " ");
 565                   break;
 566                 case 'D':
 567                   fput_const (GET_FIELD (insn, 6, 31), info);
 568                   break;
 569                 case 'f':
 570                   (*info->fprintf_func) (info->stream, ",%d", GET_FIELD (insn, 23, 25));
 571                   break;
 572                 case 'O':
 573                   fput_const ((GET_FIELD (insn, 6,20) << 5 |
 574                                GET_FIELD (insn, 27, 31)), info);
 575                   break;
 576                 case 'o':
 577                   fput_const (GET_FIELD (insn, 6, 20), info);
 578                   break;
 579                 case '2':
 580                   fput_const ((GET_FIELD (insn, 6, 22) << 5 |
 581                                GET_FIELD (insn, 27, 31)), info);
 582                   break;
 583                 case '1':
 584                   fput_const ((GET_FIELD (insn, 11, 20) << 5 |
 585                                GET_FIELD (insn, 27, 31)), info);
 586                   break;
 587                 case '0':
 588                   fput_const ((GET_FIELD (insn, 16, 20) << 5 |
 589                                GET_FIELD (insn, 27, 31)), info);
 590                   break;
 591                 case 'u':
 592                   (*info->fprintf_func) (info->stream, "%d", GET_FIELD (insn, 23, 25));
 593                   break;
 594                 case 'F':
 595                   /* if no destination completer, need a space here */
 596                   if (GET_FIELD (insn, 21, 22) == 1)
 597                     fputs_filtered (float_format_names[GET_FIELD (insn, 19, 20)],
 598                                     info);
 599                   else
 600                     (*info->fprintf_func) (info->stream, "%s ",
 601                                       float_format_names[GET_FIELD
 602                                                          (insn, 19, 20)]);
 603                   break;
 604                 case 'G':
 605                   (*info->fprintf_func) (info->stream, "%s ",
 606                                     float_format_names[GET_FIELD (insn,
 607                                                                   17, 18)]);
 608                   break;
 609                 case 'H':
 610                     fputs_filtered (float_format_names[GET_FIELD
 611                                                       (insn, 26, 26)], info);
 612                   break;
 613                 case 'I':
 614                   /* if no destination completer, need a space here */
 615                   if (GET_FIELD (insn, 21, 22) == 1)
 616                     fputs_filtered (float_format_names[GET_FIELD (insn, 20, 20)],
 617                                     info);
 618                   else
 619                     fprintf_filtered (stream, "%s ",
 620                                       float_format_names[GET_FIELD
 621                                                          (insn, 20, 20)]);
 622                   break;
 623                 case 'J':
 624                   if (GET_FIELD (insn, 24, 24))
 625                       fput_fp_reg_r (GET_FIELD (insn, 6, 10), info);
 626                   else
 627                       fput_fp_reg (GET_FIELD (insn, 6, 10), info);
 628
 629                   break;
 630                 case 'K':
 631                   if (GET_FIELD (insn, 19, 19))
 632                       fput_fp_reg_r (GET_FIELD (insn, 11, 15), info);
 633                   else
 634                       fput_fp_reg (GET_FIELD (insn, 11, 15), info);
 635                   break;
 636                 case 'M':
 637                   fputs_filtered (float_comp_names[GET_FIELD (insn, 27, 31)],
 638                                   info);
 639                   break;
 640                 default:
 641                   (*info->fprintf_func) (info->stream, "%c", *s);
 642                   break;
 643                 }
 644             }
 645           return sizeof(insn);
 646         }
 647     }
 648   (*info->fprintf_func) (info->stream, "#%8x", insn);
 649   return sizeof(insn);
 650 }