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 "sysdep.h"
  22 #include "dis-asm.h"
  23 #include "libhppa.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", "r23", "r24", "r25", "r26", "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_10 0x3ff
  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 *const control_reg[] = {
  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 *const compare_cond_names[] = {
  70   "", ",=", ",<", ",<=", ",<<", ",<<=", ",sv", ",od",
  71   ",tr", ",<>", ",>=", ",>", ",>>=", ",>>", ",nsv", ",ev"
  72 };
  73 static const char *const compare_cond_64_names[] = {
  74   "", ",*=", ",*<", ",*<=", ",*<<", ",*<<=", ",*sv", ",*od",
  75   ",*tr", ",*<>", ",*>=", ",*>", ",*>>=", ",*>>", ",*nsv", ",*ev"
  76 };
  77 static const char *const cmpib_cond_64_names[] = {
  78   ",*<<", ",*=", ",*<", ",*<=", ",*>>=", ",*<>", ",*>=", ",*>"
  79 };
  80 static const char *const add_cond_names[] = {
  81   "", ",=", ",<", ",<=", ",nuv", ",znv", ",sv", ",od",
  82   ",tr", ",<>", ",>=", ",>", ",uv", ",vnz", ",nsv", ",ev"
  83 };
  84 static const char *const add_cond_64_names[] = {
  85   "", ",*=", ",*<", ",*<=", ",*nuv", ",*znv", ",*sv", ",*od",
  86   ",*tr", ",*<>", ",*>=", ",*>", ",*uv", ",*vnz", ",*nsv", ",*ev"
  87 };
  88 static const char *const wide_add_cond_names[] = {
  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   "", ",swz", ",sbz", ",shz", ",sdc", ",swc", ",sbc", ",shc",
 100   ",tr", ",nwz", ",nbz", ",nhz", ",ndc", ",nwc", ",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 *const shift_cond_names[] = {
 107   "", ",=", ",<", ",od", ",tr", ",<>", ",>=", ",ev"
 108 };
 109 static const char *const shift_cond_64_names[] = {
 110   "", ",*=", ",*<", ",*od", ",*tr", ",*<>", ",*>=", ",*ev"
 111 };
 112 static const char *const bb_cond_64_names[] = {
 113   ",*<", ",*>="
 114 };
 115 static const char *const index_compl_names[] = {"", ",m", ",s", ",sm"};
 116 static const char *const short_ldst_compl_names[] = {"", ",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 *const float_comp_names[] =
 122 {
 123   ",false?", ",false", ",?", ",!<=>", ",=", ",=t", ",?=", ",!<>",
 124   ",!?>=", ",<", ",?<", ",!>=", ",!?>", ",<=", ",?<=", ",!>",
 125   ",!?<=", ",>", ",?>", ",!<=", ",!?<", ",>=", ",?>=", ",!<",
 126   ",!?=", ",<>", ",!=", ",!=t", ",!?", ",<=>", ",true?", ",true"
 127 };
 128 static const char *const signed_unsigned_names[] = {",u", ",s"};
 129 static const char *const mix_half_names[] = {",l", ",r"};
 130 static const char *const saturation_names[] = {",us", ",ss", 0, ""};
 131 static const char *const read_write_names[] = {",r", ",w"};
 132 static const char *const add_compl_names[] = { 0, "", ",l", ",tsv" };
 133
 134 /* For a bunch of different instructions form an index into a
 135    completer name table. */
 136 #define GET_COMPL(insn) (GET_FIELD (insn, 26, 26) | \
 137                          GET_FIELD (insn, 18, 18) << 1)
 138
 139 #define GET_COND(insn) (GET_FIELD ((insn), 16, 18) + \
 140                         (GET_FIELD ((insn), 19, 19) ? 8 : 0))
 141
 142 /* Utility function to print registers.  Put these first, so gcc's function
 143    inlining can do its stuff.  */
 144
 145 #define fputs_filtered(STR,F)   (*info->fprintf_func) (info->stream, "%s", STR)
 146
 147 static void
 148 fput_reg (reg, info)
 149      unsigned reg;
 150      disassemble_info *info;
 151 {
 152   (*info->fprintf_func) (info->stream, reg ? reg_names[reg] : "r0");
 153 }
 154
 155 static void
 156 fput_fp_reg (reg, info)
 157      unsigned reg;
 158      disassemble_info *info;
 159 {
 160   (*info->fprintf_func) (info->stream, reg ? fp_reg_names[reg] : "fr0");
 161 }
 162
 163 static void
 164 fput_fp_reg_r (reg, info)
 165      unsigned reg;
 166      disassemble_info *info;
 167 {
 168   /* Special case floating point exception registers.  */
 169   if (reg < 4)
 170     (*info->fprintf_func) (info->stream, "fpe%d", reg * 2 + 1);
 171   else
 172     (*info->fprintf_func) (info->stream, "%sR", reg ? fp_reg_names[reg]
 173                                                     : "fr0");
 174 }
 175
 176 static void
 177 fput_creg (reg, info)
 178      unsigned reg;
 179      disassemble_info *info;
 180 {
 181   (*info->fprintf_func) (info->stream, control_reg[reg]);
 182 }
 183
 184 /* print constants with sign */
 185
 186 static void
 187 fput_const (num, info)
 188      unsigned num;
 189      disassemble_info *info;
 190 {
 191   if ((int)num < 0)
 192     (*info->fprintf_func) (info->stream, "-%x", -(int)num);
 193   else
 194     (*info->fprintf_func) (info->stream, "%x", num);
 195 }
 196
 197 /* Routines to extract various sized constants out of hppa
 198    instructions. */
 199
 200 /* extract a 3-bit space register number from a be, ble, mtsp or mfsp */
 201 static int
 202 extract_3 (word)
 203      unsigned word;
 204 {
 205   return GET_FIELD (word, 18, 18) << 2 | GET_FIELD (word, 16, 17);
 206 }
 207
 208 static int
 209 extract_5_load (word)
 210      unsigned word;
 211 {
 212   return low_sign_extend (word >> 16 & MASK_5, 5);
 213 }
 214
 215 /* extract the immediate field from a st{bhw}s instruction */
 216 static int
 217 extract_5_store (word)
 218      unsigned word;
 219 {
 220   return low_sign_extend (word & MASK_5, 5);
 221 }
 222
 223 /* extract the immediate field from a break instruction */
 224 static unsigned
 225 extract_5r_store (word)
 226      unsigned word;
 227 {
 228   return (word & MASK_5);
 229 }
 230
 231 /* extract the immediate field from a {sr}sm instruction */
 232 static unsigned
 233 extract_5R_store (word)
 234      unsigned word;
 235 {
 236   return (word >> 16 & MASK_5);
 237 }
 238
 239 /* extract the 10 bit immediate field from a {sr}sm instruction */
 240 static unsigned
 241 extract_10U_store (word)
 242      unsigned word;
 243 {
 244   return (word >> 16 & MASK_10);
 245 }
 246
 247 /* extract the immediate field from a bb instruction */
 248 static unsigned
 249 extract_5Q_store (word)
 250      unsigned word;
 251 {
 252   return (word >> 21 & MASK_5);
 253 }
 254
 255 /* extract an 11 bit immediate field */
 256 static int
 257 extract_11 (word)
 258      unsigned word;
 259 {
 260   return low_sign_extend (word & MASK_11, 11);
 261 }
 262
 263 /* extract a 14 bit immediate field */
 264 static int
 265 extract_14 (word)
 266      unsigned word;
 267 {
 268   return low_sign_extend (word & MASK_14, 14);
 269 }
 270
 271 /* extract a 21 bit constant */
 272
 273 static int
 274 extract_21 (word)
 275      unsigned word;
 276 {
 277   int val;
 278
 279   word &= MASK_21;
 280   word <<= 11;
 281   val = GET_FIELD (word, 20, 20);
 282   val <<= 11;
 283   val |= GET_FIELD (word, 9, 19);
 284   val <<= 2;
 285   val |= GET_FIELD (word, 5, 6);
 286   val <<= 5;
 287   val |= GET_FIELD (word, 0, 4);
 288   val <<= 2;
 289   val |= GET_FIELD (word, 7, 8);
 290   return sign_extend (val, 21) << 11;
 291 }
 292
 293 /* extract a 12 bit constant from branch instructions */
 294
 295 static int
 296 extract_12 (word)
 297      unsigned word;
 298 {
 299   return sign_extend (GET_FIELD (word, 19, 28) |
 300                       GET_FIELD (word, 29, 29) << 10 |
 301                       (word & 0x1) << 11, 12) << 2;
 302 }
 303
 304 /* extract a 17 bit constant from branch instructions, returning the
 305    19 bit signed value. */
 306
 307 static int
 308 extract_17 (word)
 309      unsigned word;
 310 {
 311   return sign_extend (GET_FIELD (word, 19, 28) |
 312                       GET_FIELD (word, 29, 29) << 10 |
 313                       GET_FIELD (word, 11, 15) << 11 |
 314                       (word & 0x1) << 16, 17) << 2;
 315 }
 316
 317 static int
 318 extract_22 (word)
 319      unsigned word;
 320 {
 321   return sign_extend (GET_FIELD (word, 19, 28) |
 322                       GET_FIELD (word, 29, 29) << 10 |
 323                       GET_FIELD (word, 11, 15) << 11 |
 324                       GET_FIELD (word, 6, 10) << 16 |
 325                       (word & 0x1) << 21, 22) << 2;
 326 }
 327
 328 /* Print one instruction.  */
 329 int
 330 print_insn_hppa (memaddr, info)
 331      bfd_vma memaddr;
 332      disassemble_info *info;
 333 {
 334   bfd_byte buffer[4];
 335   unsigned int insn, i;
 336
 337   {
 338     int status =
 339       (*info->read_memory_func) (memaddr, buffer, sizeof (buffer), info);
 340     if (status != 0)
 341       {
 342         (*info->memory_error_func) (status, memaddr, info);
 343         return -1;
 344       }
 345   }
 346
 347   insn = bfd_getb32 (buffer);
 348
 349   for (i = 0; i < NUMOPCODES; ++i)
 350     {
 351       const struct pa_opcode *opcode = &pa_opcodes[i];
 352       if ((insn & opcode->mask) == opcode->match)
 353         {
 354           register const char *s;
 355
 356           (*info->fprintf_func) (info->stream, "%s", opcode->name);
 357
 358           if (!strchr ("cfCY?-+nHNZFIuv", opcode->args[0]))
 359             (*info->fprintf_func) (info->stream, " ");
 360           for (s = opcode->args; *s != '\0'; ++s)
 361             {
 362               switch (*s)
 363                 {
 364                 case 'x':
 365                   fput_reg (GET_FIELD (insn, 11, 15), info);
 366                   break;
 367                 case 'a':
 368                 case 'b':
 369                   fput_reg (GET_FIELD (insn, 6, 10), info);
 370                   break;
 371                 case '^':
 372                   fput_creg (GET_FIELD (insn, 6, 10), info);
 373                   break;
 374                 case 't':
 375                   fput_reg (GET_FIELD (insn, 27, 31), info);
 376                   break;
 377
 378                 /* Handle floating point registers.  */
 379                 case 'f':
 380                   switch (*++s)
 381                     {
 382                     case 't':
 383                       fput_fp_reg (GET_FIELD (insn, 27, 31), info);
 384                       break;
 385                     case 'T':
 386                       if (GET_FIELD (insn, 25, 25))
 387                         fput_fp_reg_r (GET_FIELD (insn, 27, 31), info);
 388                       else
 389                         fput_fp_reg (GET_FIELD (insn, 27, 31), info);
 390                       break;
 391                     case 'a':
 392                       if (GET_FIELD (insn, 25, 25))
 393                         fput_fp_reg_r (GET_FIELD (insn, 6, 10), info);
 394                       else
 395                         fput_fp_reg (GET_FIELD (insn, 6, 10), info);
 396                       break;
 397
 398                     /* 'fA' will not generate a space before the regsiter
 399                         name.  Normally that is fine.  Except that it
 400                         causes problems with xmpyu which has no FP format
 401                         completer.  */
 402                     case 'X':
 403                       fputs_filtered (" ", info);
 404
 405                     /* FALLTHRU */
 406
 407                     case 'A':
 408                       if (GET_FIELD (insn, 24, 24))
 409                         fput_fp_reg_r (GET_FIELD (insn, 6, 10), info);
 410                       else
 411                         fput_fp_reg (GET_FIELD (insn, 6, 10), info);
 412
 413                       break;
 414                     case 'b':
 415                       if (GET_FIELD (insn, 25, 25))
 416                         fput_fp_reg_r (GET_FIELD (insn, 11, 15), info);
 417                       else
 418                         fput_fp_reg (GET_FIELD (insn, 11, 15), info);
 419                       break;
 420                     case 'B':
 421                       if (GET_FIELD (insn, 19, 19))
 422                         fput_fp_reg_r (GET_FIELD (insn, 11, 15), info);
 423                       else
 424                         fput_fp_reg (GET_FIELD (insn, 11, 15), info);
 425                       break;
 426                     case 'C':
 427                       {
 428                         int reg = GET_FIELD (insn, 21, 22);
 429                         reg |= GET_FIELD (insn, 16, 18) << 2;
 430                         if (GET_FIELD (insn, 23, 23) != 0)
 431                           fput_fp_reg_r (reg, info);
 432                         else
 433                           fput_fp_reg (reg, info);
 434                         break;
 435                       }
 436                     case 'i':
 437                       {
 438                         int reg = GET_FIELD (insn, 6, 10);
 439
 440                         reg |= (GET_FIELD (insn, 26, 26) << 4);
 441                         fput_fp_reg (reg, info);
 442                         break;
 443                       }
 444                     case 'j':
 445                       {
 446                         int reg = GET_FIELD (insn, 11, 15);
 447
 448                         reg |= (GET_FIELD (insn, 26, 26) << 4);
 449                         fput_fp_reg (reg, info);
 450                         break;
 451                       }
 452                     case 'k':
 453                       {
 454                         int reg = GET_FIELD (insn, 27, 31);
 455
 456                         reg |= (GET_FIELD (insn, 26, 26) << 4);
 457                         fput_fp_reg (reg, info);
 458                         break;
 459                       }
 460                     case 'l':
 461                       {
 462                         int reg = GET_FIELD (insn, 21, 25);
 463
 464                         reg |= (GET_FIELD (insn, 26, 26) << 4);
 465                         fput_fp_reg (reg, info);
 466                         break;
 467                       }
 468                     case 'm':
 469                       {
 470                         int reg = GET_FIELD (insn, 16, 20);
 471
 472                         reg |= (GET_FIELD (insn, 26, 26) << 4);
 473                         fput_fp_reg (reg, info);
 474                         break;
 475                       }
 476                     case 'e':
 477                       if (GET_FIELD (insn, 25, 25))
 478                         fput_fp_reg_r (GET_FIELD (insn, 11, 15), info);
 479                       else
 480                         fput_fp_reg (GET_FIELD (insn, 11, 15), info);
 481                       break;
 482
 483                     }
 484                   break;
 485
 486                 case '5':
 487                   fput_const (extract_5_load (insn), info);
 488                   break;
 489                 case 's':
 490                   (*info->fprintf_func) (info->stream,
 491                                          "sr%d", GET_FIELD (insn, 16, 17));
 492                   break;
 493
 494                 case 'S':
 495                   (*info->fprintf_func) (info->stream, "sr%d", extract_3 (insn));
 496                   break;
 497
 498                 /* Handle completers.  */
 499                 case 'c':
 500                   switch (*++s)
 501                     {
 502                     case 'x':
 503                       (*info->fprintf_func) (info->stream, "%s ",
 504                                              index_compl_names[GET_COMPL (insn)]);
 505                       break;
 506                     case 'm':
 507                       (*info->fprintf_func) (info->stream, "%s ",
 508                                              short_ldst_compl_names[GET_COMPL (insn)]);
 509                       break;
 510                     case 's':
 511                       (*info->fprintf_func) (info->stream, "%s ",
 512                                              short_bytes_compl_names[GET_COMPL (insn)]);
 513                       break;
 514                     case 'c':
 515                     case 'C':
 516                       switch (GET_FIELD (insn, 20, 21))
 517                         {
 518                         case 1:
 519                           (*info->fprintf_func) (info->stream, ",bc ");
 520                           break;
 521                         case 2:
 522                           (*info->fprintf_func) (info->stream, ",sl ");
 523                           break;
 524                         default:
 525                           (*info->fprintf_func) (info->stream, " ");
 526                         }
 527                       break;
 528                     case 'd':
 529                       switch (GET_FIELD (insn, 20, 21))
 530                         {
 531                         case 1:
 532                           (*info->fprintf_func) (info->stream, ",co ");
 533                           break;
 534                         default:
 535                           (*info->fprintf_func) (info->stream, " ");
 536                         }
 537                       break;
 538                     case 'o':
 539                       (*info->fprintf_func) (info->stream, ",o");
 540                       break;
 541                     case 'g':
 542                       (*info->fprintf_func) (info->stream, ",gate");
 543                       break;
 544                     case 'p':
 545                       (*info->fprintf_func) (info->stream, ",l,push");
 546                       break;
 547                     case 'P':
 548                       (*info->fprintf_func) (info->stream, ",pop");
 549                       break;
 550                     case 'l':
 551                     case 'L':
 552                       (*info->fprintf_func) (info->stream, ",l");
 553                       break;
 554                     case 'w':
 555                       (*info->fprintf_func) (info->stream, "%s ",
 556                                              read_write_names[GET_FIELD (insn, 25, 25)]);
 557                       break;
 558                     case 'W':
 559                       (*info->fprintf_func) (info->stream, ",w");
 560                       break;
 561                     case 'r':
 562                       if (GET_FIELD (insn, 23, 26) == 5)
 563                         (*info->fprintf_func) (info->stream, ",r");
 564                       break;
 565                     case 'Z':
 566                       if (GET_FIELD (insn, 26, 26))
 567                         (*info->fprintf_func) (info->stream, ",m ");
 568                       else
 569                         (*info->fprintf_func) (info->stream, " ");
 570                       break;
 571                     case 'i':
 572                       if (GET_FIELD (insn, 25, 25))
 573                         (*info->fprintf_func) (info->stream, ",i");
 574                       break;
 575                     case 'z':
 576                       if (!GET_FIELD (insn, 21, 21))
 577                         (*info->fprintf_func) (info->stream, ",z");
 578                       break;
 579                     case 'a':
 580                       (*info->fprintf_func)
 581                         (info->stream, "%s", add_compl_names[GET_FIELD
 582                                                             (insn, 20, 21)]);
 583                       break;
 584                     case 'Y':
 585                       (*info->fprintf_func)
 586                         (info->stream, ",dc%s", add_compl_names[GET_FIELD
 587                                                                (insn, 20, 21)]);
 588                       break;
 589                     case 'y':
 590                       (*info->fprintf_func)
 591                         (info->stream, ",c%s", add_compl_names[GET_FIELD
 592                                                               (insn, 20, 21)]);
 593                       break;
 594                     case 'v':
 595                       if (GET_FIELD (insn, 20, 20))
 596                         (*info->fprintf_func) (info->stream, ",tsv");
 597                       break;
 598                     case 't':
 599                       (*info->fprintf_func) (info->stream, ",tc");
 600                       if (GET_FIELD (insn, 20, 20))
 601                         (*info->fprintf_func) (info->stream, ",tsv");
 602                       break;
 603                     case 'B':
 604                       (*info->fprintf_func) (info->stream, ",db");
 605                       if (GET_FIELD (insn, 20, 20))
 606                         (*info->fprintf_func) (info->stream, ",tsv");
 607                       break;
 608                     case 'b':
 609                       (*info->fprintf_func) (info->stream, ",b");
 610                       if (GET_FIELD (insn, 20, 20))
 611                         (*info->fprintf_func) (info->stream, ",tsv");
 612                       break;
 613                     case 'T':
 614                       if (GET_FIELD (insn, 25, 25))
 615                         (*info->fprintf_func) (info->stream, ",tc");
 616                       break;
 617                     case 'S':
 618                       /* EXTRD/W has a following condition.  */
 619                       if (*(s + 1) == '?')
 620                         (*info->fprintf_func)
 621                           (info->stream, "%s", signed_unsigned_names[GET_FIELD
 622                                                                     (insn, 21, 21)]);
 623                       else
 624                         (*info->fprintf_func)
 625                           (info->stream, "%s ", signed_unsigned_names[GET_FIELD
 626                                                                      (insn, 21, 21)]);
 627                       break;
 628                     case 'h':
 629                       (*info->fprintf_func)
 630                           (info->stream, "%s", mix_half_names[GET_FIELD
 631                                                              (insn, 17, 17)]);
 632                       break;
 633                     case 'H':
 634                       (*info->fprintf_func)
 635                           (info->stream, "%s", saturation_names[GET_FIELD
 636                                                                (insn, 24, 25)]);
 637                       break;
 638                     case '*':
 639                       (*info->fprintf_func)
 640                           (info->stream, ",%d%d%d%d ",
 641                            GET_FIELD (insn, 17, 18), GET_FIELD (insn, 20, 21),
 642                            GET_FIELD (insn, 22, 23), GET_FIELD (insn, 24, 25));
 643                       break;
 644
 645                     case 'q':
 646                       {
 647                         int m, a;
 648
 649                         m = GET_FIELD (insn, 28, 28);
 650                         a = GET_FIELD (insn, 29, 29);
 651
 652                         if (m && !a)
 653                           fputs_filtered (",ma ", info);
 654                         else if (m && a)
 655                           fputs_filtered (",mb ", info);
 656                         else
 657                           fputs_filtered (" ", info);
 658                         break;
 659                       }
 660
 661                     case 'J':
 662                       {
 663                         int opcode = GET_FIELD (insn, 0, 5);
 664
 665                         if (opcode == 0x16 || opcode == 0x1e)
 666                           {
 667                             if (GET_FIELD (insn, 29, 29) == 0)
 668                               fputs_filtered (",ma ", info);
 669                             else
 670                               fputs_filtered (",mb ", info);
 671                           }
 672                         else
 673                           fputs_filtered (" ", info);
 674                         break;
 675                       }
 676
 677                     case 'e':
 678                       {
 679                         int opcode = GET_FIELD (insn, 0, 5);
 680
 681                         if (opcode == 0x13 || opcode == 0x1b)
 682                           {
 683                             if (GET_FIELD (insn, 18, 18) == 1)
 684                               fputs_filtered (",mb ", info);
 685                             else
 686                               fputs_filtered (",ma ", info);
 687                           }
 688                         else if (opcode == 0x17 || opcode == 0x1f)
 689                           {
 690                             if (GET_FIELD (insn, 31, 31) == 1)
 691                               fputs_filtered (",ma ", info);
 692                             else
 693                               fputs_filtered (",mb ", info);
 694                           }
 695                         else
 696                           fputs_filtered (" ", info);
 697
 698                         break;
 699                       }
 700                     }
 701                   break;
 702
 703                 /* Handle conditions.  */
 704                 case '?':
 705                   {
 706                     s++;
 707                     switch (*s)
 708                       {
 709                       case 'f':
 710                         (*info->fprintf_func) (info->stream, "%s ",
 711                                                float_comp_names[GET_FIELD
 712                                                                (insn, 27, 31)]);
 713                         break;
 714
 715                       /* these four conditions are for the set of instructions
 716                            which distinguish true/false conditions by opcode
 717                            rather than by the 'f' bit (sigh): comb, comib,
 718                            addb, addib */
 719                       case 't':
 720                         fputs_filtered (compare_cond_names[GET_FIELD (insn, 16, 18)],
 721                                         info);
 722                         break;
 723                       case 'n':
 724                         fputs_filtered (compare_cond_names[GET_FIELD (insn, 16, 18)
 725                                         + GET_FIELD (insn, 4, 4) * 8], info);
 726                         break;
 727                       case 'N':
 728                         fputs_filtered (compare_cond_64_names[GET_FIELD (insn, 16, 18)
 729                                         + GET_FIELD (insn, 2, 2) * 8], info);
 730                         break;
 731                       case 'Q':
 732                         fputs_filtered (cmpib_cond_64_names[GET_FIELD (insn, 16, 18)],
 733                                         info);
 734                         break;
 735                       case '@':
 736                         fputs_filtered (add_cond_names[GET_FIELD (insn, 16, 18)
 737                                         + GET_FIELD (insn, 4, 4) * 8], info);
 738                         break;
 739                       case 's':
 740                         (*info->fprintf_func) (info->stream, "%s ",
 741                                                compare_cond_names[GET_COND (insn)]);
 742                         break;
 743                       case 'S':
 744                         (*info->fprintf_func) (info->stream, "%s ",
 745                                                compare_cond_64_names[GET_COND (insn)]);
 746                         break;
 747                       case 'a':
 748                         (*info->fprintf_func) (info->stream, "%s ",
 749                                                add_cond_names[GET_COND (insn)]);
 750                         break;
 751                       case 'A':
 752                         (*info->fprintf_func) (info->stream, "%s ",
 753                                                add_cond_64_names[GET_COND (insn)]);
 754                         break;
 755                       case 'd':
 756                         (*info->fprintf_func) (info->stream, "%s",
 757                                                add_cond_names[GET_FIELD (insn, 16, 18)]);
 758                         break;
 759
 760                       case 'W':
 761                         (*info->fprintf_func)
 762                           (info->stream, "%s",
 763                            wide_add_cond_names[GET_FIELD (insn, 16, 18) +
 764                                               GET_FIELD (insn, 4, 4) * 8]);
 765                         break;
 766
 767                       case 'l':
 768                         (*info->fprintf_func) (info->stream, "%s ",
 769                                                logical_cond_names[GET_COND (insn)]);
 770                         break;
 771                       case 'L':
 772                         (*info->fprintf_func) (info->stream, "%s ",
 773                                                logical_cond_64_names[GET_COND (insn)]);
 774                         break;
 775                       case 'u':
 776                         (*info->fprintf_func) (info->stream, "%s ",
 777                                                unit_cond_names[GET_COND (insn)]);
 778                         break;
 779                       case 'U':
 780                         (*info->fprintf_func) (info->stream, "%s ",
 781                                                unit_cond_64_names[GET_COND (insn)]);
 782                         break;
 783                       case 'y':
 784                       case 'x':
 785                       case 'b':
 786                         (*info->fprintf_func)
 787                           (info->stream, "%s",
 788                            shift_cond_names[GET_FIELD (insn, 16, 18)]);
 789
 790                         /* If the next character in args is 'n', it will handle
 791                            putting out the space.  */
 792                         if (s[1] != 'n')
 793                           (*info->fprintf_func) (info->stream, " ");
 794                         break;
 795                       case 'X':
 796                         (*info->fprintf_func) (info->stream, "%s ",
 797                                                shift_cond_64_names[GET_FIELD (insn, 16, 18)]);
 798                         break;
 799                       case 'B':
 800                         (*info->fprintf_func)
 801                           (info->stream, "%s",
 802                            bb_cond_64_names[GET_FIELD (insn, 16, 16)]);
 803
 804                         /* If the next character in args is 'n', it will handle
 805                            putting out the space.  */
 806                         if (s[1] != 'n')
 807                           (*info->fprintf_func) (info->stream, " ");
 808                         break;
 809                       }
 810                     break;
 811                   }
 812
 813                 case 'V':
 814                   fput_const (extract_5_store (insn), info);
 815                   break;
 816                 case 'r':
 817                   fput_const (extract_5r_store (insn), info);
 818                   break;
 819                 case 'R':
 820                   fput_const (extract_5R_store (insn), info);
 821                   break;
 822                 case 'U':
 823                   fput_const (extract_10U_store (insn), info);
 824                   break;
 825                 case 'B':
 826                 case 'Q':
 827                   fput_const (extract_5Q_store (insn), info);
 828                   break;
 829                 case 'i':
 830                   fput_const (extract_11 (insn), info);
 831                   break;
 832                 case 'j':
 833                   fput_const (extract_14 (insn), info);
 834                   break;
 835                 case 'k':
 836                   fput_const (extract_21 (insn), info);
 837                   break;
 838                 case 'n':
 839                   if (insn & 0x2)
 840                     (*info->fprintf_func) (info->stream, ",n ");
 841                   else
 842                     (*info->fprintf_func) (info->stream, " ");
 843                   break;
 844                 case 'N':
 845                   if ((insn & 0x20) && s[1])
 846                     (*info->fprintf_func) (info->stream, ",n ");
 847                   else if (insn & 0x20)
 848                     (*info->fprintf_func) (info->stream, ",n");
 849                   else if (s[1])
 850                     (*info->fprintf_func) (info->stream, " ");
 851                   break;
 852                 case 'w':
 853                   (*info->print_address_func) (memaddr + 8 + extract_12 (insn),
 854                                                info);
 855                   break;
 856                 case 'W':
 857                   /* 17 bit PC-relative branch.  */
 858                   (*info->print_address_func) ((memaddr + 8
 859                                                 + extract_17 (insn)),
 860                                                info);
 861                   break;
 862                 case 'z':
 863                   /* 17 bit displacement.  This is an offset from a register
 864                      so it gets disasssembled as just a number, not any sort
 865                      of address.  */
 866                   fput_const (extract_17 (insn), info);
 867                   break;
 868
 869                 case 'Z':
 870                   /* addil %r1 implicit output.  */
 871                   (*info->fprintf_func) (info->stream, "%%r1");
 872                   break;
 873
 874                 case 'Y':
 875                   /* be,l %sr0,%r31 implicit output.  */
 876                   (*info->fprintf_func) (info->stream, "%%sr0,%%r31");
 877                   break;
 878
 879                 case '@':
 880                   (*info->fprintf_func) (info->stream, "0");
 881                   break;
 882
 883                 case '.':
 884                   (*info->fprintf_func) (info->stream, "%d",
 885                                     GET_FIELD (insn, 24, 25));
 886                   break;
 887                 case '*':
 888                   (*info->fprintf_func) (info->stream, "%d",
 889                                     GET_FIELD (insn, 22, 25));
 890                   break;
 891                 case '!':
 892                   (*info->fprintf_func) (info->stream, "%%sar");
 893                   break;
 894                 case 'p':
 895                   (*info->fprintf_func) (info->stream, "%d",
 896                                     31 - GET_FIELD (insn, 22, 26));
 897                   break;
 898                 case '~':
 899                   {
 900                     int num;
 901                     num = GET_FIELD (insn, 20, 20) << 5;
 902                     num |= GET_FIELD (insn, 22, 26);
 903                     (*info->fprintf_func) (info->stream, "%d", 63 - num);
 904                     break;
 905                   }
 906                 case 'P':
 907                   (*info->fprintf_func) (info->stream, "%d",
 908                                     GET_FIELD (insn, 22, 26));
 909                   break;
 910                 case 'q':
 911                   {
 912                     int num;
 913                     num = GET_FIELD (insn, 20, 20) << 5;
 914                     num |= GET_FIELD (insn, 22, 26);
 915                     (*info->fprintf_func) (info->stream, "%d", num);
 916                     break;
 917                   }
 918                 case 'T':
 919                   (*info->fprintf_func) (info->stream, "%d",
 920                                     32 - GET_FIELD (insn, 27, 31));
 921                   break;
 922                 case '%':
 923                   {
 924                     int num;
 925                     num = (GET_FIELD (insn, 23, 23) + 1) * 32;
 926                     num -= GET_FIELD (insn, 27, 31);
 927                     (*info->fprintf_func) (info->stream, "%d", num);
 928                     break;
 929                   }
 930                 case '|':
 931                   {
 932                     int num;
 933                     num = (GET_FIELD (insn, 19, 19) + 1) * 32;
 934                     num -= GET_FIELD (insn, 27, 31);
 935                     (*info->fprintf_func) (info->stream, "%d", num);
 936                     break;
 937                   }
 938                 case '$':
 939                   fput_const (GET_FIELD (insn, 20, 28), info);
 940                   break;
 941                 case 'A':
 942                   fput_const (GET_FIELD (insn, 6, 18), info);
 943                   break;
 944                 case 'D':
 945                   fput_const (GET_FIELD (insn, 6, 31), info);
 946                   break;
 947                 case 'v':
 948                   (*info->fprintf_func) (info->stream, ",%d", GET_FIELD (insn, 23, 25));
 949                   break;
 950                 case 'O':
 951                   fput_const ((GET_FIELD (insn, 6,20) << 5 |
 952                                GET_FIELD (insn, 27, 31)), info);
 953                   break;
 954                 case 'o':
 955                   fput_const (GET_FIELD (insn, 6, 20), info);
 956                   break;
 957                 case '2':
 958                   fput_const ((GET_FIELD (insn, 6, 22) << 5 |
 959                                GET_FIELD (insn, 27, 31)), info);
 960                   break;
 961                 case '1':
 962                   fput_const ((GET_FIELD (insn, 11, 20) << 5 |
 963                                GET_FIELD (insn, 27, 31)), info);
 964                   break;
 965                 case '0':
 966                   fput_const ((GET_FIELD (insn, 16, 20) << 5 |
 967                                GET_FIELD (insn, 27, 31)), info);
 968                   break;
 969                 case 'u':
 970                   (*info->fprintf_func) (info->stream, ",%d", GET_FIELD (insn, 23, 25));
 971                   break;
 972                 case 'F':
 973                   /* if no destination completer and not before a completer
 974                      for fcmp, need a space here */
 975                   if (s[1] == 'G' || s[1] == '?')
 976                     fputs_filtered (float_format_names[GET_FIELD (insn, 19, 20)],
 977                                     info);
 978                   else
 979                     (*info->fprintf_func) (info->stream, "%s ",
 980                                            float_format_names[GET_FIELD
 981                                                               (insn, 19, 20)]);
 982                   break;
 983                 case 'G':
 984                   (*info->fprintf_func) (info->stream, "%s ",
 985                                     float_format_names[GET_FIELD (insn,
 986                                                                   17, 18)]);
 987                   break;
 988                 case 'H':
 989                   if (GET_FIELD (insn, 26, 26) == 1)
 990                     (*info->fprintf_func) (info->stream, "%s ",
 991                                     float_format_names[0]);
 992                   else
 993                     (*info->fprintf_func) (info->stream, "%s ",
 994                                     float_format_names[1]);
 995                   break;
 996                 case 'I':
 997                   /* if no destination completer and not before a completer
 998                      for fcmp, need a space here */
 999                   if (s[1] == '?')
1000                     fputs_filtered (float_format_names[GET_FIELD (insn, 20, 20)],
1001                                     info);
1002                   else
1003                     (*info->fprintf_func) (info->stream, "%s ",
1004                                            float_format_names[GET_FIELD
1005                                                               (insn, 20, 20)]);
1006                   break;
1007
1008                 case 'J':
1009                   fput_const (extract_14 (insn), info);
1010                   break;
1011
1012                 case '#':
1013                   {
1014                     int sign = GET_FIELD (insn, 31, 31);
1015                     int imm10 = GET_FIELD (insn, 18, 27);
1016                     int disp;
1017
1018                     if (sign)
1019                       disp = (-1 << 10) | imm10;
1020                     else
1021                       disp = imm10;
1022
1023                     disp <<= 3;
1024                     fput_const (disp, info);
1025                     break;
1026                   }
1027                 case 'K':
1028                 case 'd':
1029                   {
1030                     int sign = GET_FIELD (insn, 31, 31);
1031                     int imm11 = GET_FIELD (insn, 18, 28);
1032                     int disp;
1033
1034                     if (sign)
1035                       disp = (-1 << 11) | imm11;
1036                     else
1037                       disp = imm11;
1038
1039                     disp <<= 2;
1040                     fput_const (disp, info);
1041                     break;
1042                   }
1043
1044                 /* ?!? FIXME */
1045                 case '_':
1046                 case '{':
1047                   fputs_filtered ("Disassembler botch.\n", info);
1048                   break;
1049
1050                 case 'm':
1051                   {
1052                     int y = GET_FIELD (insn, 16, 18);
1053
1054                     if (y != 1)
1055                       fput_const ((y ^ 1) - 1, info);
1056                   }
1057                   break;
1058
1059                 case 'h':
1060                   {
1061                     int cbit;
1062
1063                     cbit = GET_FIELD (insn, 16, 18);
1064
1065                     if (cbit > 0)
1066                       (*info->fprintf_func) (info->stream, ",%d", cbit - 1);
1067                     break;
1068                   }
1069
1070                 case '=':
1071                   {
1072                     int cond = GET_FIELD (insn, 27, 31);
1073
1074                     if (cond == 0)
1075                       fputs_filtered (" ", info);
1076                     else if (cond == 1)
1077                       fputs_filtered ("acc ", info);
1078                     else if (cond == 2)
1079                       fputs_filtered ("rej ", info);
1080                     else if (cond == 5)
1081                       fputs_filtered ("acc8 ", info);
1082                     else if (cond == 6)
1083                       fputs_filtered ("rej8 ", info);
1084                     else if (cond == 9)
1085                       fputs_filtered ("acc6 ", info);
1086                     else if (cond == 13)
1087                       fputs_filtered ("acc4 ", info);
1088                     else if (cond == 17)
1089                       fputs_filtered ("acc2 ", info);
1090                     break;
1091                   }
1092
1093                 case 'X':
1094                   (*info->print_address_func) ((memaddr + 8
1095                                                 + extract_22 (insn)),
1096                                                info);
1097                   break;
1098                 case 'L':
1099                   fputs_filtered (",%r2", info);
1100                   break;
1101                 default:
1102                   (*info->fprintf_func) (info->stream, "%c", *s);
1103                   break;
1104                 }
1105             }
1106           return sizeof(insn);
1107         }
1108     }
1109   (*info->fprintf_func) (info->stream, "#%8x", insn);
1110   return sizeof(insn);
1111 }