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_10 0x3ff
  50 #define MASK_11 0x7ff
  51 #define MASK_14 0x3fff
  52 #define MASK_21 0x1fffff
  53
  54 /* This macro gets bit fields using HP's numbering (MSB = 0) */
  55
  56 #define GET_FIELD(X, FROM, TO) \
  57   ((X) >> (31 - (TO)) & ((1 << ((TO) - (FROM) + 1)) - 1))
  58
  59 /* Some of these have been converted to 2-d arrays because they
  60    consume less storage this way.  If the maintenance becomes a
  61    problem, convert them back to const 1-d pointer arrays.  */
  62 static const char *const control_reg[] = {
  63   "rctr", "cr1", "cr2", "cr3", "cr4", "cr5", "cr6", "cr7",
  64   "pidr1", "pidr2", "ccr", "sar", "pidr3", "pidr4",
  65   "iva", "eiem", "itmr", "pcsq", "pcoq", "iir", "isr",
  66   "ior", "ipsw", "eirr", "tr0", "tr1", "tr2", "tr3",
  67   "tr4", "tr5", "tr6", "tr7"
  68 };
  69
  70 static const char *const compare_cond_names[] = {
  71   "", ",=", ",<", ",<=", ",<<", ",<<=", ",sv", ",od",
  72   ",tr", ",<>", ",>=", ",>", ",>>=", ",>>", ",nsv", ",ev"
  73 };
  74 static const char *const compare_cond_64_names[] = {
  75   "", ",*=", ",*<", ",*<=", ",*<<", ",*<<=", ",*sv", ",*od",
  76   ",*tr", ",*<>", ",*>=", ",*>", ",*>>=", ",*>>", ",*nsv", ",*ev"
  77 };
  78 static const char *const cmpib_cond_64_names[] = {
  79   ",*<<", ",*=", ",*<", ",*<=", ",*>>=", ",*<>", ",*>=", ",*>"
  80 };
  81 static const char *const add_cond_names[] = {
  82   "", ",=", ",<", ",<=", ",nuv", ",znv", ",sv", ",od",
  83   ",tr", ",<>", ",>=", ",>", ",uv", ",vnz", ",nsv", ",ev"
  84 };
  85 static const char *const add_cond_64_names[] = {
  86   "", ",*=", ",*<", ",*<=", ",*nuv", ",*znv", ",*sv", ",*od",
  87   ",*tr", ",*<>", ",*>=", ",*>", ",*uv", ",*vnz", ",*nsv", ",*ev"
  88 };
  89 static const char *const wide_add_cond_names[] = {
  90   "", ",=", ",<", ",<=", ",nuv", ",*=", ",*<", ",*<=",
  91   ",tr", ",<>", ",>=", ",>", ",uv", ",*<>", ",*>=", ",*>"
  92 };
  93 static const char *const logical_cond_names[] = {
  94   "", ",=", ",<", ",<=", 0, 0, 0, ",od",
  95   ",tr", ",<>", ",>=", ",>", 0, 0, 0, ",ev"};
  96 static const char *const logical_cond_64_names[] = {
  97   "", ",*=", ",*<", ",*<=", 0, 0, 0, ",*od",
  98   ",*tr", ",*<>", ",*>=", ",*>", 0, 0, 0, ",*ev"};
  99 static const char *const unit_cond_names[] = {
 100   "", 0, ",sbz", ",shz", ",sdc", 0, ",sbc", ",shc",
 101   ",tr", 0, ",nbz", ",nhz", ",ndc", 0, ",nbc", ",nhc"
 102 };
 103 static const char *const unit_cond_64_names[] = {
 104   "", ",*swz", ",*sbz", ",*shz", ",*sdc", ",*swc", ",*sbc", ",*shc",
 105   ",*tr", ",*nwz", ",*nbz", ",*nhz", ",*ndc", ",*nwc", ",*nbc", ",*nhc"
 106 };
 107 static const char *const shift_cond_names[] = {
 108   "", ",=", ",<", ",od", ",tr", ",<>", ",>=", ",ev"
 109 };
 110 static const char *const shift_cond_64_names[] = {
 111   "", ",*=", ",*<", ",*od", ",*tr", ",*<>", ",*>=", ",*ev"
 112 };
 113 static const char *const bb_cond_64_names[] = {
 114   ",*<", ",*>="
 115 };
 116 static const char *const index_compl_names[] = {"", ",m", ",s", ",sm"};
 117 static const char *const short_ldst_compl_names[] = {"", ",ma", "", ",mb"};
 118 static const char *const short_bytes_compl_names[] = {
 119   "", ",b,m", ",e", ",e,m"
 120 };
 121 static const char *const float_format_names[] = {",sgl", ",dbl", "", ",quad"};
 122 static const char *const float_comp_names[] =
 123 {
 124   ",false?", ",false", ",?", ",!<=>", ",=", ",=t", ",?=", ",!<>",
 125   ",!?>=", ",<", ",?<", ",!>=", ",!?>", ",<=", ",?<=", ",!>",
 126   ",!?<=", ",>", ",?>", ",!<=", ",!?<", ",>=", ",?>=", ",!<",
 127   ",!?=", ",<>", ",!=", ",!=t", ",!?", ",<=>", ",true?", ",true"
 128 };
 129 static const char *const signed_unsigned_names[] = {",u", ",s"};
 130 static const char *const mix_half_names[] = {",l", ",r"};
 131 static const char *const saturation_names[] = {",us", ",ss", 0, ""};
 132 static const char *const read_write_names[] = {",r", ",w"};
 133 static const char *const add_compl_names[] = { 0, "", ",l", ",tsv" };
 134
 135 /* For a bunch of different instructions form an index into a
 136    completer name table. */
 137 #define GET_COMPL(insn) (GET_FIELD (insn, 26, 26) | \
 138                          GET_FIELD (insn, 18, 18) << 1)
 139
 140 #define GET_COND(insn) (GET_FIELD ((insn), 16, 18) + \
 141                         (GET_FIELD ((insn), 19, 19) ? 8 : 0))
 142
 143 /* Utility function to print registers.  Put these first, so gcc's function
 144    inlining can do its stuff.  */
 145
 146 #define fputs_filtered(STR,F)   (*info->fprintf_func) (info->stream, "%s", STR)
 147
 148 static void
 149 fput_reg (reg, info)
 150      unsigned reg;
 151      disassemble_info *info;
 152 {
 153   (*info->fprintf_func) (info->stream, reg ? reg_names[reg] : "r0");
 154 }
 155
 156 static void
 157 fput_fp_reg (reg, info)
 158      unsigned reg;
 159      disassemble_info *info;
 160 {
 161   (*info->fprintf_func) (info->stream, reg ? fp_reg_names[reg] : "fr0");
 162 }
 163
 164 static void
 165 fput_fp_reg_r (reg, info)
 166      unsigned reg;
 167      disassemble_info *info;
 168 {
 169   /* Special case floating point exception registers.  */
 170   if (reg < 4)
 171     (*info->fprintf_func) (info->stream, "fpe%d", reg * 2 + 1);
 172   else
 173     (*info->fprintf_func) (info->stream, "%sR", reg ? fp_reg_names[reg]
 174                                                     : "fr0");
 175 }
 176
 177 static void
 178 fput_creg (reg, info)
 179      unsigned reg;
 180      disassemble_info *info;
 181 {
 182   (*info->fprintf_func) (info->stream, control_reg[reg]);
 183 }
 184
 185 /* print constants with sign */
 186
 187 static void
 188 fput_const (num, info)
 189      unsigned num;
 190      disassemble_info *info;
 191 {
 192   if ((int)num < 0)
 193     (*info->fprintf_func) (info->stream, "-%x", -(int)num);
 194   else
 195     (*info->fprintf_func) (info->stream, "%x", num);
 196 }
 197
 198 /* Routines to extract various sized constants out of hppa
 199    instructions. */
 200
 201 /* extract a 3-bit space register number from a be, ble, mtsp or mfsp */
 202 static int
 203 extract_3 (word)
 204      unsigned word;
 205 {
 206   return GET_FIELD (word, 18, 18) << 2 | GET_FIELD (word, 16, 17);
 207 }
 208
 209 static int
 210 extract_5_load (word)
 211      unsigned word;
 212 {
 213   return low_sign_extend (word >> 16 & MASK_5, 5);
 214 }
 215
 216 /* extract the immediate field from a st{bhw}s instruction */
 217 static int
 218 extract_5_store (word)
 219      unsigned word;
 220 {
 221   return low_sign_extend (word & MASK_5, 5);
 222 }
 223
 224 /* extract the immediate field from a break instruction */
 225 static unsigned
 226 extract_5r_store (word)
 227      unsigned word;
 228 {
 229   return (word & MASK_5);
 230 }
 231
 232 /* extract the immediate field from a {sr}sm instruction */
 233 static unsigned
 234 extract_5R_store (word)
 235      unsigned word;
 236 {
 237   return (word >> 16 & MASK_5);
 238 }
 239
 240 /* extract the 10 bit immediate field from a {sr}sm instruction */
 241 static unsigned
 242 extract_10U_store (word)
 243      unsigned word;
 244 {
 245   return (word >> 16 & MASK_10);
 246 }
 247
 248 /* extract the immediate field from a bb instruction */
 249 static unsigned
 250 extract_5Q_store (word)
 251      unsigned word;
 252 {
 253   return (word >> 21 & MASK_5);
 254 }
 255
 256 /* extract an 11 bit immediate field */
 257 static int
 258 extract_11 (word)
 259      unsigned word;
 260 {
 261   return low_sign_extend (word & MASK_11, 11);
 262 }
 263
 264 /* extract a 14 bit immediate field */
 265 static int
 266 extract_14 (word)
 267      unsigned word;
 268 {
 269   return low_sign_extend (word & MASK_14, 14);
 270 }
 271
 272 /* extract a 21 bit constant */
 273
 274 static int
 275 extract_21 (word)
 276      unsigned word;
 277 {
 278   int val;
 279
 280   word &= MASK_21;
 281   word <<= 11;
 282   val = GET_FIELD (word, 20, 20);
 283   val <<= 11;
 284   val |= GET_FIELD (word, 9, 19);
 285   val <<= 2;
 286   val |= GET_FIELD (word, 5, 6);
 287   val <<= 5;
 288   val |= GET_FIELD (word, 0, 4);
 289   val <<= 2;
 290   val |= GET_FIELD (word, 7, 8);
 291   return sign_extend (val, 21) << 11;
 292 }
 293
 294 /* extract a 12 bit constant from branch instructions */
 295
 296 static int
 297 extract_12 (word)
 298      unsigned word;
 299 {
 300   return sign_extend (GET_FIELD (word, 19, 28) |
 301                       GET_FIELD (word, 29, 29) << 10 |
 302                       (word & 0x1) << 11, 12) << 2;
 303 }
 304
 305 /* extract a 17 bit constant from branch instructions, returning the
 306    19 bit signed value. */
 307
 308 static int
 309 extract_17 (word)
 310      unsigned word;
 311 {
 312   return sign_extend (GET_FIELD (word, 19, 28) |
 313                       GET_FIELD (word, 29, 29) << 10 |
 314                       GET_FIELD (word, 11, 15) << 11 |
 315                       (word & 0x1) << 16, 17) << 2;
 316 }
 317
 318 /* Print one instruction.  */
 319 int
 320 print_insn_hppa (memaddr, info)
 321      bfd_vma memaddr;
 322      disassemble_info *info;
 323 {
 324   bfd_byte buffer[4];
 325   unsigned int insn, i;
 326
 327   {
 328     int status =
 329       (*info->read_memory_func) (memaddr, buffer, sizeof (buffer), info);
 330     if (status != 0)
 331       {
 332         (*info->memory_error_func) (status, memaddr, info);
 333         return -1;
 334       }
 335   }
 336
 337   insn = bfd_getb32 (buffer);
 338
 339   for (i = 0; i < NUMOPCODES; ++i)
 340     {
 341       const struct pa_opcode *opcode = &pa_opcodes[i];
 342       if ((insn & opcode->mask) == opcode->match)
 343         {
 344           register const char *s;
 345
 346           (*info->fprintf_func) (info->stream, "%s", opcode->name);
 347
 348           if (!strchr ("cfCY?-+nHNZFIuv", opcode->args[0]))
 349             (*info->fprintf_func) (info->stream, " ");
 350           for (s = opcode->args; *s != '\0'; ++s)
 351             {
 352               switch (*s)
 353                 {
 354                 case 'x':
 355                   fput_reg (GET_FIELD (insn, 11, 15), info);
 356                   break;
 357                 case 'a':
 358                 case 'b':
 359                   fput_reg (GET_FIELD (insn, 6, 10), info);
 360                   break;
 361                 case '^':
 362                   fput_creg (GET_FIELD (insn, 6, 10), info);
 363                   break;
 364                 case 't':
 365                   fput_reg (GET_FIELD (insn, 27, 31), info);
 366                   break;
 367
 368                 /* Handle floating point registers.  */
 369                 case 'f':
 370                   switch (*++s)
 371                     {
 372                     case 't':
 373                       fput_fp_reg (GET_FIELD (insn, 27, 31), info);
 374                       break;
 375                     case 'T':
 376                       if (GET_FIELD (insn, 25, 25))
 377                         fput_fp_reg_r (GET_FIELD (insn, 27, 31), info);
 378                       else
 379                         fput_fp_reg (GET_FIELD (insn, 27, 31), info);
 380                       break;
 381                     case 'a':
 382                       if (GET_FIELD (insn, 25, 25))
 383                         fput_fp_reg_r (GET_FIELD (insn, 6, 10), info);
 384                       else
 385                         fput_fp_reg (GET_FIELD (insn, 6, 10), info);
 386                       break;
 387
 388                     /* 'fA' will not generate a space before the regsiter
 389                         name.  Normally that is fine.  Except that it
 390                         causes problems with xmpyu which has no FP format
 391                         completer.  */
 392                     case 'X':
 393                       fputs_filtered (" ", info);
 394
 395                     /* FALLTHRU */
 396
 397                     case 'A':
 398                       if (GET_FIELD (insn, 24, 24))
 399                         fput_fp_reg_r (GET_FIELD (insn, 6, 10), info);
 400                       else
 401                         fput_fp_reg (GET_FIELD (insn, 6, 10), info);
 402
 403                       break;
 404                     case 'b':
 405                       if (GET_FIELD (insn, 25, 25))
 406                         fput_fp_reg_r (GET_FIELD (insn, 11, 15), info);
 407                       else
 408                         fput_fp_reg (GET_FIELD (insn, 11, 15), info);
 409                       break;
 410                     case 'B':
 411                       if (GET_FIELD (insn, 19, 19))
 412                         fput_fp_reg_r (GET_FIELD (insn, 11, 15), info);
 413                       else
 414                         fput_fp_reg (GET_FIELD (insn, 11, 15), info);
 415                       break;
 416                     case 'C':
 417                       {
 418                         int reg = GET_FIELD (insn, 21, 22);
 419                         reg |= GET_FIELD (insn, 16, 18) << 2;
 420                         if (GET_FIELD (insn, 23, 23) != 0)
 421                           fput_fp_reg_r (reg, info);
 422                         else
 423                           fput_fp_reg (reg, info);
 424                         break;
 425                       }
 426                     case 'i':
 427                       {
 428                         int reg = GET_FIELD (insn, 6, 10);
 429
 430                         reg |= (GET_FIELD (insn, 26, 26) << 4);
 431                         fput_fp_reg (reg, info);
 432                         break;
 433                       }
 434                     case 'j':
 435                       {
 436                         int reg = GET_FIELD (insn, 11, 15);
 437
 438                         reg |= (GET_FIELD (insn, 26, 26) << 4);
 439                         fput_fp_reg (reg, info);
 440                         break;
 441                       }
 442                     case 'k':
 443                       {
 444                         int reg = GET_FIELD (insn, 27, 31);
 445
 446                         reg |= (GET_FIELD (insn, 26, 26) << 4);
 447                         fput_fp_reg (reg, info);
 448                         break;
 449                       }
 450                     case 'l':
 451                       {
 452                         int reg = GET_FIELD (insn, 21, 25);
 453
 454                         reg |= (GET_FIELD (insn, 26, 26) << 4);
 455                         fput_fp_reg (reg, info);
 456                         break;
 457                       }
 458                     case 'm':
 459                       {
 460                         int reg = GET_FIELD (insn, 16, 20);
 461
 462                         reg |= (GET_FIELD (insn, 26, 26) << 4);
 463                         fput_fp_reg (reg, info);
 464                         break;
 465                       }
 466                     case 'e':
 467                       if (GET_FIELD (insn, 25, 25))
 468                         fput_fp_reg_r (GET_FIELD (insn, 11, 15), info);
 469                       else
 470                         fput_fp_reg (GET_FIELD (insn, 11, 15), info);
 471                       break;
 472
 473                     }
 474                   break;
 475
 476                 case '5':
 477                   fput_const (extract_5_load (insn), info);
 478                   break;
 479                 case 's':
 480                   (*info->fprintf_func) (info->stream,
 481                                          "sr%d", GET_FIELD (insn, 16, 17));
 482                   break;
 483
 484                 case 'S':
 485                   (*info->fprintf_func) (info->stream, "sr%d", extract_3 (insn));
 486                   break;
 487
 488                 /* Handle completers.  */
 489                 case 'c':
 490                   switch (*++s)
 491                     {
 492                     case 'x':
 493                       (*info->fprintf_func) (info->stream, "%s ",
 494                                              index_compl_names[GET_COMPL (insn)]);
 495                       break;
 496                     case 'm':
 497                       (*info->fprintf_func) (info->stream, "%s ",
 498                                              short_ldst_compl_names[GET_COMPL (insn)]);
 499                       break;
 500                     case 'q':
 501                       (*info->fprintf_func)
 502                         (info->stream, "%s ",
 503                          short_ldst_compl_names[(GET_FIELD (insn, 28, 28)
 504                                                  | GET_FIELD (insn, 29, 29))]);
 505                       break;
 506                     case 'J':
 507                       if (insn & 0x4)
 508                         (*info->fprintf_func) (info->stream, ",mb ");
 509                       else
 510                         (*info->fprintf_func) (info->stream, ",ma ");
 511                       break;
 512                     case 's':
 513                       (*info->fprintf_func) (info->stream, "%s ",
 514                                              short_bytes_compl_names[GET_COMPL (insn)]);
 515                       break;
 516                     case 'L':
 517                       (*info->fprintf_func) (info->stream, ",l");
 518                       break;
 519                     case 'w':
 520                       (*info->fprintf_func) (info->stream, "%s ",
 521                                              read_write_names[GET_FIELD (insn, 25, 25)]);
 522                       break;
 523                     case 'W':
 524                       (*info->fprintf_func) (info->stream, ",w");
 525                       break;
 526                     case 'r':
 527                       if (GET_FIELD (insn, 23, 26) == 5)
 528                         (*info->fprintf_func) (info->stream, ",r");
 529                       break;
 530                     case 'Z':
 531                       if (GET_FIELD (insn, 26, 26))
 532                         (*info->fprintf_func) (info->stream, ",m ");
 533                       else
 534                         (*info->fprintf_func) (info->stream, " ");
 535                       break;
 536                     case 'i':
 537                       if (GET_FIELD (insn, 25, 25))
 538                         (*info->fprintf_func) (info->stream, ",i");
 539                       break;
 540                     case 'z':
 541                       if (!GET_FIELD (insn, 21, 21))
 542                         (*info->fprintf_func) (info->stream, ",z");
 543                       break;
 544                     case 'a':
 545                       (*info->fprintf_func)
 546                         (info->stream, "%s", add_compl_names[GET_FIELD
 547                                                             (insn, 20, 21)]);
 548                       break;
 549                     case 'Y':
 550                       (*info->fprintf_func)
 551                         (info->stream, ",dc%s", add_compl_names[GET_FIELD
 552                                                                (insn, 20, 21)]);
 553                       break;
 554                     case 'y':
 555                       (*info->fprintf_func)
 556                         (info->stream, ",c%s", add_compl_names[GET_FIELD
 557                                                               (insn, 20, 21)]);
 558                       break;
 559                     case 'v':
 560                       if (GET_FIELD (insn, 20, 20))
 561                         (*info->fprintf_func) (info->stream, ",tsv");
 562                       break;
 563                     case 't':
 564                       (*info->fprintf_func) (info->stream, ",tc");
 565                       if (GET_FIELD (insn, 20, 20))
 566                         (*info->fprintf_func) (info->stream, ",tsv");
 567                       break;
 568                     case 'B':
 569                       (*info->fprintf_func) (info->stream, ",db");
 570                       if (GET_FIELD (insn, 20, 20))
 571                         (*info->fprintf_func) (info->stream, ",tsv");
 572                       break;
 573                     case 'b':
 574                       (*info->fprintf_func) (info->stream, ",b");
 575                       if (GET_FIELD (insn, 20, 20))
 576                         (*info->fprintf_func) (info->stream, ",tsv");
 577                       break;
 578                     case 'T':
 579                       if (GET_FIELD (insn, 25, 25))
 580                         (*info->fprintf_func) (info->stream, ",tc");
 581                       break;
 582                     case 'S':
 583                       /* EXTRD/W has a following condition.  */
 584                       if (*(s + 1) == '?')
 585                         (*info->fprintf_func)
 586                           (info->stream, "%s", signed_unsigned_names[GET_FIELD
 587                                                                     (insn, 21, 21)]);
 588                       else
 589                         (*info->fprintf_func)
 590                           (info->stream, "%s ", signed_unsigned_names[GET_FIELD
 591                                                                      (insn, 21, 21)]);
 592                       break;
 593                     case 'h':
 594                       (*info->fprintf_func)
 595                           (info->stream, "%s", mix_half_names[GET_FIELD
 596                                                              (insn, 17, 17)]);
 597                       break;
 598                     case 'H':
 599                       (*info->fprintf_func)
 600                           (info->stream, "%s", saturation_names[GET_FIELD
 601                                                                (insn, 24, 25)]);
 602                       break;
 603                     case '*':
 604                       (*info->fprintf_func)
 605                           (info->stream, ",%d%d%d%d ",
 606                            GET_FIELD (insn, 17, 18), GET_FIELD (insn, 20, 21),
 607                            GET_FIELD (insn, 22, 23), GET_FIELD (insn, 24, 25));
 608                       break;
 609                     }
 610                   break;
 611
 612                 /* Handle conditions.  */
 613                 case '?':
 614                   {
 615                     s++;
 616                     switch (*s)
 617                       {
 618                       case 'f':
 619                         (*info->fprintf_func) (info->stream, "%s ",
 620                                                float_comp_names[GET_FIELD
 621                                                                (insn, 27, 31)]);
 622                         break;
 623
 624                       /* these four conditions are for the set of instructions
 625                            which distinguish true/false conditions by opcode
 626                            rather than by the 'f' bit (sigh): comb, comib,
 627                            addb, addib */
 628                       case 't':
 629                         fputs_filtered (compare_cond_names[GET_FIELD (insn, 16, 18)],
 630                                         info);
 631                         break;
 632                       case 'T':
 633                         fputs_filtered (compare_cond_names[GET_FIELD (insn, 16, 18)
 634                                                           + 8], info);
 635                         break;
 636                       case 'r':
 637                         fputs_filtered (compare_cond_64_names[GET_FIELD (insn, 16, 18)],
 638                                         info);
 639                         break;
 640                       case 'R':
 641                         fputs_filtered (compare_cond_64_names[GET_FIELD (insn, 16, 18)
 642                                                              + 8], info);
 643                         break;
 644                       case 'Q':
 645                         fputs_filtered (cmpib_cond_64_names[GET_FIELD (insn, 16, 18)],
 646                                         info);
 647                         break;
 648                       case 'n':
 649                         fputs_filtered (compare_cond_names[GET_FIELD (insn, 16, 18)
 650                                         + GET_FIELD (insn, 4, 4) * 8], info);
 651                         break;
 652                       case '@':
 653                         fputs_filtered (add_cond_names[GET_FIELD (insn, 16, 18)
 654                                         + GET_FIELD (insn, 4, 4) * 8], info);
 655                         break;
 656                       case 's':
 657                         (*info->fprintf_func) (info->stream, "%s ",
 658                                                compare_cond_names[GET_COND (insn)]);
 659                         break;
 660                       case 'S':
 661                         (*info->fprintf_func) (info->stream, "%s ",
 662                                                compare_cond_64_names[GET_COND (insn)]);
 663                         break;
 664                       case 'a':
 665                         (*info->fprintf_func) (info->stream, "%s ",
 666                                                add_cond_names[GET_COND (insn)]);
 667                         break;
 668                       case 'A':
 669                         (*info->fprintf_func) (info->stream, "%s ",
 670                                                add_cond_64_names[GET_COND (insn)]);
 671                         break;
 672                       case 'd':
 673                         (*info->fprintf_func) (info->stream, "%s",
 674                                                add_cond_names[GET_FIELD (insn, 16, 18)]);
 675                         break;
 676
 677                       case 'D':
 678                         (*info->fprintf_func) (info->stream, "%s",
 679                                                add_cond_names[GET_FIELD (insn, 16, 18)
 680                                                              + 8]);
 681                         break;
 682                       case 'w':
 683                         (*info->fprintf_func)
 684                           (info->stream, "%s",
 685                            wide_add_cond_names[GET_FIELD (insn, 16, 18)]);
 686                         break;
 687
 688                       case 'W':
 689                         (*info->fprintf_func)
 690                           (info->stream, "%s",
 691                            wide_add_cond_names[GET_FIELD (insn, 16, 18) + 8]);
 692                         break;
 693
 694                       case 'l':
 695                         (*info->fprintf_func) (info->stream, "%s ",
 696                                                logical_cond_names[GET_COND (insn)]);
 697                         break;
 698                       case 'L':
 699                         (*info->fprintf_func) (info->stream, "%s ",
 700                                                logical_cond_64_names[GET_COND (insn)]);
 701                         break;
 702                       case 'u':
 703                         (*info->fprintf_func) (info->stream, "%s ",
 704                                                unit_cond_names[GET_COND (insn)]);
 705                         break;
 706                       case 'U':
 707                         (*info->fprintf_func) (info->stream, "%s ",
 708                                                unit_cond_64_names[GET_COND (insn)]);
 709                         break;
 710                       case 'y':
 711                       case 'x':
 712                       case 'b':
 713                         (*info->fprintf_func)
 714                           (info->stream, "%s",
 715                            shift_cond_names[GET_FIELD (insn, 16, 18)]);
 716
 717                         /* If the next character in args is 'n', it will handle
 718                            putting out the space.  */
 719                         if (s[1] != 'n')
 720                           (*info->fprintf_func) (info->stream, " ");
 721                         break;
 722                       case 'X':
 723                         (*info->fprintf_func) (info->stream, "%s ",
 724                                                shift_cond_64_names[GET_FIELD (insn, 16, 18)]);
 725                         break;
 726                       case 'B':
 727                         (*info->fprintf_func)
 728                           (info->stream, "%s",
 729                            bb_cond_64_names[GET_FIELD (insn, 16, 16)]);
 730
 731                         /* If the next character in args is 'n', it will handle
 732                            putting out the space.  */
 733                         if (s[1] != 'n')
 734                           (*info->fprintf_func) (info->stream, " ");
 735                         break;
 736                       }
 737                     break;
 738                   }
 739
 740                 case 'V':
 741                   fput_const (extract_5_store (insn), info);
 742                   break;
 743                 case 'r':
 744                   fput_const (extract_5r_store (insn), info);
 745                   break;
 746                 case 'R':
 747                   fput_const (extract_5R_store (insn), info);
 748                   break;
 749                 case 'U':
 750                   fput_const (extract_10U_store (insn), info);
 751                   break;
 752                 case 'Q':
 753                   fput_const (extract_5Q_store (insn), info);
 754                   break;
 755                 case 'i':
 756                   fput_const (extract_11 (insn), info);
 757                   break;
 758                 case 'j':
 759                   fput_const (extract_14 (insn), info);
 760                   break;
 761                 case 'k':
 762                   fput_const (extract_21 (insn), info);
 763                   break;
 764                 case 'n':
 765                   if (insn & 0x2)
 766                     (*info->fprintf_func) (info->stream, ",n ");
 767                   else
 768                     (*info->fprintf_func) (info->stream, " ");
 769                   break;
 770                 case 'N':
 771                   if ((insn & 0x20) && s[1])
 772                     (*info->fprintf_func) (info->stream, ",n ");
 773                   else if (insn & 0x20)
 774                     (*info->fprintf_func) (info->stream, ",n");
 775                   else if (s[1])
 776                     (*info->fprintf_func) (info->stream, " ");
 777                   break;
 778                 case 'w':
 779                   (*info->print_address_func) (memaddr + 8 + extract_12 (insn),
 780                                                info);
 781                   break;
 782                 case 'W':
 783                   /* 17 bit PC-relative branch.  */
 784                   (*info->print_address_func) ((memaddr + 8
 785                                                 + extract_17 (insn)),
 786                                                info);
 787                   break;
 788                 case 'z':
 789                   /* 17 bit displacement.  This is an offset from a register
 790                      so it gets disasssembled as just a number, not any sort
 791                      of address.  */
 792                   fput_const (extract_17 (insn), info);
 793                   break;
 794
 795                 case 'Z':
 796                   /* addil %r1 implicit output.  */
 797                   (*info->fprintf_func) (info->stream, "%%r1");
 798                   break;
 799
 800                 case '.':
 801                   (*info->fprintf_func) (info->stream, "%d",
 802                                     GET_FIELD (insn, 24, 25));
 803                   break;
 804                 case '*':
 805                   (*info->fprintf_func) (info->stream, "%d",
 806                                     GET_FIELD (insn, 22, 25));
 807                   break;
 808                 case '!':
 809                   (*info->fprintf_func) (info->stream, "%%sar");
 810                   break;
 811                 case 'p':
 812                   (*info->fprintf_func) (info->stream, "%d",
 813                                     31 - GET_FIELD (insn, 22, 26));
 814                   break;
 815                 case '~':
 816                   {
 817                     int num;
 818                     num = GET_FIELD (insn, 20, 20) << 5;
 819                     num |= GET_FIELD (insn, 22, 26);
 820                     (*info->fprintf_func) (info->stream, "%d", 63 - num);
 821                     break;
 822                   }
 823                 case 'P':
 824                   (*info->fprintf_func) (info->stream, "%d",
 825                                     GET_FIELD (insn, 22, 26));
 826                   break;
 827                 case 'q':
 828                   {
 829                     int num;
 830                     num = GET_FIELD (insn, 20, 20) << 5;
 831                     num |= GET_FIELD (insn, 22, 26);
 832                     (*info->fprintf_func) (info->stream, "%d", num);
 833                     break;
 834                   }
 835                 case 'T':
 836                   (*info->fprintf_func) (info->stream, "%d",
 837                                     32 - GET_FIELD (insn, 27, 31));
 838                   break;
 839                 case '%':
 840                   {
 841                     int num;
 842                     num = (GET_FIELD (insn, 23, 23) + 1) * 32;
 843                     num -= GET_FIELD (insn, 27, 31);
 844                     (*info->fprintf_func) (info->stream, "%d", num);
 845                     break;
 846                   }
 847                 case '|':
 848                   {
 849                     int num;
 850                     num = (GET_FIELD (insn, 19, 19) + 1) * 32;
 851                     num -= GET_FIELD (insn, 27, 31);
 852                     (*info->fprintf_func) (info->stream, "%d", num);
 853                     break;
 854                   }
 855                 case '$':
 856                   fput_const (GET_FIELD (insn, 20, 28), info);
 857                   break;
 858                 case 'A':
 859                   fput_const (GET_FIELD (insn, 6, 18), info);
 860                   break;
 861                 case 'D':
 862                   fput_const (GET_FIELD (insn, 6, 31), info);
 863                   break;
 864                 case 'v':
 865                   (*info->fprintf_func) (info->stream, ",%d", GET_FIELD (insn, 23, 25));
 866                   break;
 867                 case 'O':
 868                   fput_const ((GET_FIELD (insn, 6,20) << 5 |
 869                                GET_FIELD (insn, 27, 31)), info);
 870                   break;
 871                 case 'o':
 872                   fput_const (GET_FIELD (insn, 6, 20), info);
 873                   break;
 874                 case '2':
 875                   fput_const ((GET_FIELD (insn, 6, 22) << 5 |
 876                                GET_FIELD (insn, 27, 31)), info);
 877                   break;
 878                 case '1':
 879                   fput_const ((GET_FIELD (insn, 11, 20) << 5 |
 880                                GET_FIELD (insn, 27, 31)), info);
 881                   break;
 882                 case '0':
 883                   fput_const ((GET_FIELD (insn, 16, 20) << 5 |
 884                                GET_FIELD (insn, 27, 31)), info);
 885                   break;
 886                 case 'u':
 887                   (*info->fprintf_func) (info->stream, ",%d", GET_FIELD (insn, 23, 25));
 888                   break;
 889                 case 'F':
 890                   /* if no destination completer and not before a completer
 891                      for fcmp, need a space here */
 892                   if (s[1] == 'G' || s[1] == '?')
 893                     fputs_filtered (float_format_names[GET_FIELD (insn, 19, 20)],
 894                                     info);
 895                   else
 896                     (*info->fprintf_func) (info->stream, "%s ",
 897                                            float_format_names[GET_FIELD
 898                                                               (insn, 19, 20)]);
 899                   break;
 900                 case 'G':
 901                   (*info->fprintf_func) (info->stream, "%s ",
 902                                     float_format_names[GET_FIELD (insn,
 903                                                                   17, 18)]);
 904                   break;
 905                 case 'H':
 906                   if (GET_FIELD (insn, 26, 26) == 1)
 907                     (*info->fprintf_func) (info->stream, "%s ",
 908                                     float_format_names[0]);
 909                   else
 910                     (*info->fprintf_func) (info->stream, "%s ",
 911                                     float_format_names[1]);
 912                   break;
 913                 case 'I':
 914                   /* if no destination completer and not before a completer
 915                      for fcmp, need a space here */
 916                   if (s[1] == '?')
 917                     fputs_filtered (float_format_names[GET_FIELD (insn, 20, 20)],
 918                                     info);
 919                   else
 920                     (*info->fprintf_func) (info->stream, "%s ",
 921                                            float_format_names[GET_FIELD
 922                                                               (insn, 20, 20)]);
 923                   break;
 924                 case '#':
 925                   {
 926                     int sign = GET_FIELD (insn, 31, 31);
 927                     int imm10 = GET_FIELD (insn, 18, 27);
 928                     int disp;
 929
 930                     if (sign)
 931                       disp = (-1 << 10) | imm10;
 932                     else
 933                       disp = imm10;
 934
 935                     disp <<= 3;
 936                     fput_const (disp, info);
 937                     break;
 938                   }
 939                 case 'd':
 940                   {
 941                     int sign = GET_FIELD (insn, 31, 31);
 942                     int imm11 = GET_FIELD (insn, 18, 28);
 943                     int disp;
 944
 945                     if (sign)
 946                       disp = (-1 << 11) | imm11;
 947                     else
 948                       disp = imm11;
 949
 950                     disp <<= 2;
 951                     fput_const (disp, info);
 952                     break;
 953                   }
 954
 955                 /* ?!? FIXME */
 956                 case '_':
 957                 case '{':
 958                   fputs_filtered ("Disassembler botch.\n", info);
 959                   break;
 960
 961                 case 'm':
 962                   {
 963                     int y = GET_FIELD (insn, 16, 18);
 964
 965                     if (y != 1)
 966                       fput_const ((y ^ 1) - 1, info);
 967                   }
 968                   break;
 969
 970                 case 'h':
 971                   {
 972                     int cbit;
 973
 974                     cbit = GET_FIELD (insn, 16, 18);
 975
 976                     if (cbit > 0)
 977                       (*info->fprintf_func) (info->stream, ",%d", cbit - 1);
 978                     break;
 979                   }
 980
 981                 case '=':
 982                   {
 983                     int cond = GET_FIELD (insn, 27, 31);
 984
 985                     if (cond == 0)
 986                       fputs_filtered (" ", info);
 987                     else if (cond == 1)
 988                       fputs_filtered ("acc ", info);
 989                     else if (cond == 2)
 990                       fputs_filtered ("rej ", info);
 991                     else if (cond == 5)
 992                       fputs_filtered ("acc8 ", info);
 993                     else if (cond == 6)
 994                       fputs_filtered ("rej8 ", info);
 995                     else if (cond == 9)
 996                       fputs_filtered ("acc6 ", info);
 997                     else if (cond == 13)
 998                       fputs_filtered ("acc4 ", info);
 999                     else if (cond == 17)
1000                       fputs_filtered ("acc2 ", info);
1001                     break;
1002                   }
1003
1004                 case 'X':
1005                   (*info->print_address_func) ((memaddr + 8
1006                                                 + extract_22 (insn)),
1007                                                info);
1008                   break;
1009                 case 'B':
1010                   fputs_filtered (",pop", info);
1011                   break;
1012                 case 'M':
1013                   fputs_filtered (",push", info);
1014                   break;
1015                 case 'L':
1016                   fputs_filtered (",%r2", info);
1017                   break;
1018                 case 'g':
1019                   fputs_filtered (",gate", info);
1020                   break;
1021                 case 'l':
1022                   fputs_filtered (",l", info);
1023                   break;
1024                 default:
1025                   (*info->fprintf_func) (info->stream, "%c", *s);
1026                   break;
1027                 }
1028             }
1029           return sizeof(insn);
1030         }
1031     }
1032   (*info->fprintf_func) (info->stream, "#%8x", insn);
1033   return sizeof(insn);
1034 }