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 static int
 319 extract_22 (word)
 320      unsigned word;
 321 {
 322   return sign_extend (GET_FIELD (word, 19, 28) |
 323                       GET_FIELD (word, 29, 29) << 10 |
 324                       GET_FIELD (word, 11, 15) << 11 |
 325                       GET_FIELD (word, 6, 10) << 16 |
 326                       (word & 0x1) << 21, 22) << 2;
 327 }
 328
 329 /* Print one instruction.  */
 330 int
 331 print_insn_hppa (memaddr, info)
 332      bfd_vma memaddr;
 333      disassemble_info *info;
 334 {
 335   bfd_byte buffer[4];
 336   unsigned int insn, i;
 337
 338   {
 339     int status =
 340       (*info->read_memory_func) (memaddr, buffer, sizeof (buffer), info);
 341     if (status != 0)
 342       {
 343         (*info->memory_error_func) (status, memaddr, info);
 344         return -1;
 345       }
 346   }
 347
 348   insn = bfd_getb32 (buffer);
 349
 350   for (i = 0; i < NUMOPCODES; ++i)
 351     {
 352       const struct pa_opcode *opcode = &pa_opcodes[i];
 353       if ((insn & opcode->mask) == opcode->match)
 354         {
 355           register const char *s;
 356
 357           (*info->fprintf_func) (info->stream, "%s", opcode->name);
 358
 359           if (!strchr ("cfCY?-+nHNZFIuv", opcode->args[0]))
 360             (*info->fprintf_func) (info->stream, " ");
 361           for (s = opcode->args; *s != '\0'; ++s)
 362             {
 363               switch (*s)
 364                 {
 365                 case 'x':
 366                   fput_reg (GET_FIELD (insn, 11, 15), info);
 367                   break;
 368                 case 'a':
 369                 case 'b':
 370                   fput_reg (GET_FIELD (insn, 6, 10), info);
 371                   break;
 372                 case '^':
 373                   fput_creg (GET_FIELD (insn, 6, 10), info);
 374                   break;
 375                 case 't':
 376                   fput_reg (GET_FIELD (insn, 27, 31), info);
 377                   break;
 378
 379                 /* Handle floating point registers.  */
 380                 case 'f':
 381                   switch (*++s)
 382                     {
 383                     case 't':
 384                       fput_fp_reg (GET_FIELD (insn, 27, 31), info);
 385                       break;
 386                     case 'T':
 387                       if (GET_FIELD (insn, 25, 25))
 388                         fput_fp_reg_r (GET_FIELD (insn, 27, 31), info);
 389                       else
 390                         fput_fp_reg (GET_FIELD (insn, 27, 31), info);
 391                       break;
 392                     case 'a':
 393                       if (GET_FIELD (insn, 25, 25))
 394                         fput_fp_reg_r (GET_FIELD (insn, 6, 10), info);
 395                       else
 396                         fput_fp_reg (GET_FIELD (insn, 6, 10), info);
 397                       break;
 398
 399                     /* 'fA' will not generate a space before the regsiter
 400                         name.  Normally that is fine.  Except that it
 401                         causes problems with xmpyu which has no FP format
 402                         completer.  */
 403                     case 'X':
 404                       fputs_filtered (" ", info);
 405
 406                     /* FALLTHRU */
 407
 408                     case 'A':
 409                       if (GET_FIELD (insn, 24, 24))
 410                         fput_fp_reg_r (GET_FIELD (insn, 6, 10), info);
 411                       else
 412                         fput_fp_reg (GET_FIELD (insn, 6, 10), info);
 413
 414                       break;
 415                     case 'b':
 416                       if (GET_FIELD (insn, 25, 25))
 417                         fput_fp_reg_r (GET_FIELD (insn, 11, 15), info);
 418                       else
 419                         fput_fp_reg (GET_FIELD (insn, 11, 15), info);
 420                       break;
 421                     case 'B':
 422                       if (GET_FIELD (insn, 19, 19))
 423                         fput_fp_reg_r (GET_FIELD (insn, 11, 15), info);
 424                       else
 425                         fput_fp_reg (GET_FIELD (insn, 11, 15), info);
 426                       break;
 427                     case 'C':
 428                       {
 429                         int reg = GET_FIELD (insn, 21, 22);
 430                         reg |= GET_FIELD (insn, 16, 18) << 2;
 431                         if (GET_FIELD (insn, 23, 23) != 0)
 432                           fput_fp_reg_r (reg, info);
 433                         else
 434                           fput_fp_reg (reg, info);
 435                         break;
 436                       }
 437                     case 'i':
 438                       {
 439                         int reg = GET_FIELD (insn, 6, 10);
 440
 441                         reg |= (GET_FIELD (insn, 26, 26) << 4);
 442                         fput_fp_reg (reg, info);
 443                         break;
 444                       }
 445                     case 'j':
 446                       {
 447                         int reg = GET_FIELD (insn, 11, 15);
 448
 449                         reg |= (GET_FIELD (insn, 26, 26) << 4);
 450                         fput_fp_reg (reg, info);
 451                         break;
 452                       }
 453                     case 'k':
 454                       {
 455                         int reg = GET_FIELD (insn, 27, 31);
 456
 457                         reg |= (GET_FIELD (insn, 26, 26) << 4);
 458                         fput_fp_reg (reg, info);
 459                         break;
 460                       }
 461                     case 'l':
 462                       {
 463                         int reg = GET_FIELD (insn, 21, 25);
 464
 465                         reg |= (GET_FIELD (insn, 26, 26) << 4);
 466                         fput_fp_reg (reg, info);
 467                         break;
 468                       }
 469                     case 'm':
 470                       {
 471                         int reg = GET_FIELD (insn, 16, 20);
 472
 473                         reg |= (GET_FIELD (insn, 26, 26) << 4);
 474                         fput_fp_reg (reg, info);
 475                         break;
 476                       }
 477                     case 'e':
 478                       if (GET_FIELD (insn, 25, 25))
 479                         fput_fp_reg_r (GET_FIELD (insn, 11, 15), info);
 480                       else
 481                         fput_fp_reg (GET_FIELD (insn, 11, 15), info);
 482                       break;
 483
 484                     }
 485                   break;
 486
 487                 case '5':
 488                   fput_const (extract_5_load (insn), info);
 489                   break;
 490                 case 's':
 491                   (*info->fprintf_func) (info->stream,
 492                                          "sr%d", GET_FIELD (insn, 16, 17));
 493                   break;
 494
 495                 case 'S':
 496                   (*info->fprintf_func) (info->stream, "sr%d", extract_3 (insn));
 497                   break;
 498
 499                 /* Handle completers.  */
 500                 case 'c':
 501                   switch (*++s)
 502                     {
 503                     case 'x':
 504                       (*info->fprintf_func) (info->stream, "%s ",
 505                                              index_compl_names[GET_COMPL (insn)]);
 506                       break;
 507                     case 'm':
 508                       (*info->fprintf_func) (info->stream, "%s ",
 509                                              short_ldst_compl_names[GET_COMPL (insn)]);
 510                       break;
 511                     case 's':
 512                       (*info->fprintf_func) (info->stream, "%s ",
 513                                              short_bytes_compl_names[GET_COMPL (insn)]);
 514                       break;
 515                     case 'g':
 516                       (*info->fprintf_func) (info->stream, ",gate");
 517                     case 'p':
 518                       (*info->fprintf_func) (info->stream, ",l,push");
 519                       break;
 520                     case 'P':
 521                       (*info->fprintf_func) (info->stream, ",pop");
 522                       break;
 523                     case 'l':
 524                     case 'L':
 525                       (*info->fprintf_func) (info->stream, ",l");
 526                       break;
 527                     case 'w':
 528                       (*info->fprintf_func) (info->stream, "%s ",
 529                                              read_write_names[GET_FIELD (insn, 25, 25)]);
 530                       break;
 531                     case 'W':
 532                       (*info->fprintf_func) (info->stream, ",w");
 533                       break;
 534                     case 'r':
 535                       if (GET_FIELD (insn, 23, 26) == 5)
 536                         (*info->fprintf_func) (info->stream, ",r");
 537                       break;
 538                     case 'Z':
 539                       if (GET_FIELD (insn, 26, 26))
 540                         (*info->fprintf_func) (info->stream, ",m ");
 541                       else
 542                         (*info->fprintf_func) (info->stream, " ");
 543                       break;
 544                     case 'i':
 545                       if (GET_FIELD (insn, 25, 25))
 546                         (*info->fprintf_func) (info->stream, ",i");
 547                       break;
 548                     case 'z':
 549                       if (!GET_FIELD (insn, 21, 21))
 550                         (*info->fprintf_func) (info->stream, ",z");
 551                       break;
 552                     case 'a':
 553                       (*info->fprintf_func)
 554                         (info->stream, "%s", add_compl_names[GET_FIELD
 555                                                             (insn, 20, 21)]);
 556                       break;
 557                     case 'Y':
 558                       (*info->fprintf_func)
 559                         (info->stream, ",dc%s", add_compl_names[GET_FIELD
 560                                                                (insn, 20, 21)]);
 561                       break;
 562                     case 'y':
 563                       (*info->fprintf_func)
 564                         (info->stream, ",c%s", add_compl_names[GET_FIELD
 565                                                               (insn, 20, 21)]);
 566                       break;
 567                     case 'v':
 568                       if (GET_FIELD (insn, 20, 20))
 569                         (*info->fprintf_func) (info->stream, ",tsv");
 570                       break;
 571                     case 't':
 572                       (*info->fprintf_func) (info->stream, ",tc");
 573                       if (GET_FIELD (insn, 20, 20))
 574                         (*info->fprintf_func) (info->stream, ",tsv");
 575                       break;
 576                     case 'B':
 577                       (*info->fprintf_func) (info->stream, ",db");
 578                       if (GET_FIELD (insn, 20, 20))
 579                         (*info->fprintf_func) (info->stream, ",tsv");
 580                       break;
 581                     case 'b':
 582                       (*info->fprintf_func) (info->stream, ",b");
 583                       if (GET_FIELD (insn, 20, 20))
 584                         (*info->fprintf_func) (info->stream, ",tsv");
 585                       break;
 586                     case 'T':
 587                       if (GET_FIELD (insn, 25, 25))
 588                         (*info->fprintf_func) (info->stream, ",tc");
 589                       break;
 590                     case 'S':
 591                       /* EXTRD/W has a following condition.  */
 592                       if (*(s + 1) == '?')
 593                         (*info->fprintf_func)
 594                           (info->stream, "%s", signed_unsigned_names[GET_FIELD
 595                                                                     (insn, 21, 21)]);
 596                       else
 597                         (*info->fprintf_func)
 598                           (info->stream, "%s ", signed_unsigned_names[GET_FIELD
 599                                                                      (insn, 21, 21)]);
 600                       break;
 601                     case 'h':
 602                       (*info->fprintf_func)
 603                           (info->stream, "%s", mix_half_names[GET_FIELD
 604                                                              (insn, 17, 17)]);
 605                       break;
 606                     case 'H':
 607                       (*info->fprintf_func)
 608                           (info->stream, "%s", saturation_names[GET_FIELD
 609                                                                (insn, 24, 25)]);
 610                       break;
 611                     case '*':
 612                       (*info->fprintf_func)
 613                           (info->stream, ",%d%d%d%d ",
 614                            GET_FIELD (insn, 17, 18), GET_FIELD (insn, 20, 21),
 615                            GET_FIELD (insn, 22, 23), GET_FIELD (insn, 24, 25));
 616                       break;
 617
 618                     case 'q':
 619                       {
 620                         int m, a;
 621
 622                         m = GET_FIELD (insn, 28, 28);
 623                         a = GET_FIELD (insn, 29, 29);
 624
 625                         if (m && !a)
 626                           fputs_filtered (",ma ", info);
 627                         else if (m && a)
 628                           fputs_filtered (",mb ", info);
 629                         else
 630                           fputs_filtered (" ", info);
 631                         break;
 632                       }
 633
 634                     case 'J':
 635                       {
 636                         int opcode = GET_FIELD (insn, 0, 5);
 637
 638                         if (opcode == 0x16 || opcode == 0x1e)
 639                           {
 640                             if (GET_FIELD (insn, 29, 29) == 0)
 641                               fputs_filtered (",ma ", info);
 642                             else
 643                               fputs_filtered (",mb ", info);
 644                           }
 645                         else
 646                           fputs_filtered (" ", info);
 647                         break;
 648                       }
 649
 650                     case 'c':
 651                       {
 652                         int opcode = GET_FIELD (insn, 0, 5);
 653
 654                         if (opcode == 0x13 || opcode == 0x1b)
 655                           {
 656                             if (GET_FIELD (insn, 18, 18) == 1)
 657                               fputs_filtered (",mb ", info);
 658                             else
 659                               fputs_filtered (",ma ", info);
 660                           }
 661                         else if (opcode == 0x17 || opcode == 0x1f)
 662                           {
 663                             if (GET_FIELD (insn, 31, 31) == 1)
 664                               fputs_filtered (",ma ", info);
 665                             else
 666                               fputs_filtered (",mb ", info);
 667                           }
 668                         else
 669                           fputs_filtered (" ", info);
 670
 671                         break;
 672                       }
 673                     }
 674                   break;
 675
 676                 /* Handle conditions.  */
 677                 case '?':
 678                   {
 679                     s++;
 680                     switch (*s)
 681                       {
 682                       case 'f':
 683                         (*info->fprintf_func) (info->stream, "%s ",
 684                                                float_comp_names[GET_FIELD
 685                                                                (insn, 27, 31)]);
 686                         break;
 687
 688                       /* these four conditions are for the set of instructions
 689                            which distinguish true/false conditions by opcode
 690                            rather than by the 'f' bit (sigh): comb, comib,
 691                            addb, addib */
 692                       case 't':
 693                         fputs_filtered (compare_cond_names[GET_FIELD (insn, 16, 18)],
 694                                         info);
 695                         break;
 696                       case 'T':
 697                         fputs_filtered (compare_cond_names[GET_FIELD (insn, 16, 18)
 698                                                           + 8], info);
 699                         break;
 700                       case 'r':
 701                         fputs_filtered (compare_cond_64_names[GET_FIELD (insn, 16, 18)],
 702                                         info);
 703                         break;
 704                       case 'R':
 705                         fputs_filtered (compare_cond_64_names[GET_FIELD (insn, 16, 18)
 706                                                              + 8], info);
 707                         break;
 708                       case 'Q':
 709                         fputs_filtered (cmpib_cond_64_names[GET_FIELD (insn, 16, 18)],
 710                                         info);
 711                         break;
 712                       case 'n':
 713                         fputs_filtered (compare_cond_names[GET_FIELD (insn, 16, 18)
 714                                         + GET_FIELD (insn, 4, 4) * 8], info);
 715                         break;
 716                       case '@':
 717                         fputs_filtered (add_cond_names[GET_FIELD (insn, 16, 18)
 718                                         + GET_FIELD (insn, 4, 4) * 8], info);
 719                         break;
 720                       case 's':
 721                         (*info->fprintf_func) (info->stream, "%s ",
 722                                                compare_cond_names[GET_COND (insn)]);
 723                         break;
 724                       case 'S':
 725                         (*info->fprintf_func) (info->stream, "%s ",
 726                                                compare_cond_64_names[GET_COND (insn)]);
 727                         break;
 728                       case 'a':
 729                         (*info->fprintf_func) (info->stream, "%s ",
 730                                                add_cond_names[GET_COND (insn)]);
 731                         break;
 732                       case 'A':
 733                         (*info->fprintf_func) (info->stream, "%s ",
 734                                                add_cond_64_names[GET_COND (insn)]);
 735                         break;
 736                       case 'd':
 737                         (*info->fprintf_func) (info->stream, "%s",
 738                                                add_cond_names[GET_FIELD (insn, 16, 18)]);
 739                         break;
 740
 741                       case 'D':
 742                         (*info->fprintf_func) (info->stream, "%s",
 743                                                add_cond_names[GET_FIELD (insn, 16, 18)
 744                                                              + 8]);
 745                         break;
 746                       case 'w':
 747                         (*info->fprintf_func)
 748                           (info->stream, "%s",
 749                            wide_add_cond_names[GET_FIELD (insn, 16, 18)]);
 750                         break;
 751
 752                       case 'W':
 753                         (*info->fprintf_func)
 754                           (info->stream, "%s",
 755                            wide_add_cond_names[GET_FIELD (insn, 16, 18) + 8]);
 756                         break;
 757
 758                       case 'l':
 759                         (*info->fprintf_func) (info->stream, "%s ",
 760                                                logical_cond_names[GET_COND (insn)]);
 761                         break;
 762                       case 'L':
 763                         (*info->fprintf_func) (info->stream, "%s ",
 764                                                logical_cond_64_names[GET_COND (insn)]);
 765                         break;
 766                       case 'u':
 767                         (*info->fprintf_func) (info->stream, "%s ",
 768                                                unit_cond_names[GET_COND (insn)]);
 769                         break;
 770                       case 'U':
 771                         (*info->fprintf_func) (info->stream, "%s ",
 772                                                unit_cond_64_names[GET_COND (insn)]);
 773                         break;
 774                       case 'y':
 775                       case 'x':
 776                       case 'b':
 777                         (*info->fprintf_func)
 778                           (info->stream, "%s",
 779                            shift_cond_names[GET_FIELD (insn, 16, 18)]);
 780
 781                         /* If the next character in args is 'n', it will handle
 782                            putting out the space.  */
 783                         if (s[1] != 'n')
 784                           (*info->fprintf_func) (info->stream, " ");
 785                         break;
 786                       case 'X':
 787                         (*info->fprintf_func) (info->stream, "%s ",
 788                                                shift_cond_64_names[GET_FIELD (insn, 16, 18)]);
 789                         break;
 790                       case 'B':
 791                         (*info->fprintf_func)
 792                           (info->stream, "%s",
 793                            bb_cond_64_names[GET_FIELD (insn, 16, 16)]);
 794
 795                         /* If the next character in args is 'n', it will handle
 796                            putting out the space.  */
 797                         if (s[1] != 'n')
 798                           (*info->fprintf_func) (info->stream, " ");
 799                         break;
 800                       }
 801                     break;
 802                   }
 803
 804                 case 'V':
 805                   fput_const (extract_5_store (insn), info);
 806                   break;
 807                 case 'r':
 808                   fput_const (extract_5r_store (insn), info);
 809                   break;
 810                 case 'R':
 811                   fput_const (extract_5R_store (insn), info);
 812                   break;
 813                 case 'U':
 814                   fput_const (extract_10U_store (insn), info);
 815                   break;
 816                 case 'Q':
 817                   fput_const (extract_5Q_store (insn), info);
 818                   break;
 819                 case 'i':
 820                   fput_const (extract_11 (insn), info);
 821                   break;
 822                 case 'j':
 823                   fput_const (extract_14 (insn), info);
 824                   break;
 825                 case 'k':
 826                   fput_const (extract_21 (insn), info);
 827                   break;
 828                 case 'n':
 829                   if (insn & 0x2)
 830                     (*info->fprintf_func) (info->stream, ",n ");
 831                   else
 832                     (*info->fprintf_func) (info->stream, " ");
 833                   break;
 834                 case 'N':
 835                   if ((insn & 0x20) && s[1])
 836                     (*info->fprintf_func) (info->stream, ",n ");
 837                   else if (insn & 0x20)
 838                     (*info->fprintf_func) (info->stream, ",n");
 839                   else if (s[1])
 840                     (*info->fprintf_func) (info->stream, " ");
 841                   break;
 842                 case 'w':
 843                   (*info->print_address_func) (memaddr + 8 + extract_12 (insn),
 844                                                info);
 845                   break;
 846                 case 'W':
 847                   /* 17 bit PC-relative branch.  */
 848                   (*info->print_address_func) ((memaddr + 8
 849                                                 + extract_17 (insn)),
 850                                                info);
 851                   break;
 852                 case 'z':
 853                   /* 17 bit displacement.  This is an offset from a register
 854                      so it gets disasssembled as just a number, not any sort
 855                      of address.  */
 856                   fput_const (extract_17 (insn), info);
 857                   break;
 858
 859                 case 'Z':
 860                   /* addil %r1 implicit output.  */
 861                   (*info->fprintf_func) (info->stream, "%%r1");
 862                   break;
 863
 864                 case 'Y':
 865                   /* be,l %sr0,%r31 implicit output.  */
 866                   (*info->fprintf_func) (info->stream, "%%sr0,%%r31");
 867                   break;
 868
 869                 case '.':
 870                   (*info->fprintf_func) (info->stream, "%d",
 871                                     GET_FIELD (insn, 24, 25));
 872                   break;
 873                 case '*':
 874                   (*info->fprintf_func) (info->stream, "%d",
 875                                     GET_FIELD (insn, 22, 25));
 876                   break;
 877                 case '!':
 878                   (*info->fprintf_func) (info->stream, "%%sar");
 879                   break;
 880                 case 'p':
 881                   (*info->fprintf_func) (info->stream, "%d",
 882                                     31 - GET_FIELD (insn, 22, 26));
 883                   break;
 884                 case '~':
 885                   {
 886                     int num;
 887                     num = GET_FIELD (insn, 20, 20) << 5;
 888                     num |= GET_FIELD (insn, 22, 26);
 889                     (*info->fprintf_func) (info->stream, "%d", 63 - num);
 890                     break;
 891                   }
 892                 case 'P':
 893                   (*info->fprintf_func) (info->stream, "%d",
 894                                     GET_FIELD (insn, 22, 26));
 895                   break;
 896                 case 'q':
 897                   {
 898                     int num;
 899                     num = GET_FIELD (insn, 20, 20) << 5;
 900                     num |= GET_FIELD (insn, 22, 26);
 901                     (*info->fprintf_func) (info->stream, "%d", num);
 902                     break;
 903                   }
 904                 case 'T':
 905                   (*info->fprintf_func) (info->stream, "%d",
 906                                     32 - GET_FIELD (insn, 27, 31));
 907                   break;
 908                 case '%':
 909                   {
 910                     int num;
 911                     num = (GET_FIELD (insn, 23, 23) + 1) * 32;
 912                     num -= GET_FIELD (insn, 27, 31);
 913                     (*info->fprintf_func) (info->stream, "%d", num);
 914                     break;
 915                   }
 916                 case '|':
 917                   {
 918                     int num;
 919                     num = (GET_FIELD (insn, 19, 19) + 1) * 32;
 920                     num -= GET_FIELD (insn, 27, 31);
 921                     (*info->fprintf_func) (info->stream, "%d", num);
 922                     break;
 923                   }
 924                 case '$':
 925                   fput_const (GET_FIELD (insn, 20, 28), info);
 926                   break;
 927                 case 'A':
 928                   fput_const (GET_FIELD (insn, 6, 18), info);
 929                   break;
 930                 case 'D':
 931                   fput_const (GET_FIELD (insn, 6, 31), info);
 932                   break;
 933                 case 'v':
 934                   (*info->fprintf_func) (info->stream, ",%d", GET_FIELD (insn, 23, 25));
 935                   break;
 936                 case 'O':
 937                   fput_const ((GET_FIELD (insn, 6,20) << 5 |
 938                                GET_FIELD (insn, 27, 31)), info);
 939                   break;
 940                 case 'o':
 941                   fput_const (GET_FIELD (insn, 6, 20), info);
 942                   break;
 943                 case '2':
 944                   fput_const ((GET_FIELD (insn, 6, 22) << 5 |
 945                                GET_FIELD (insn, 27, 31)), info);
 946                   break;
 947                 case '1':
 948                   fput_const ((GET_FIELD (insn, 11, 20) << 5 |
 949                                GET_FIELD (insn, 27, 31)), info);
 950                   break;
 951                 case '0':
 952                   fput_const ((GET_FIELD (insn, 16, 20) << 5 |
 953                                GET_FIELD (insn, 27, 31)), info);
 954                   break;
 955                 case 'u':
 956                   (*info->fprintf_func) (info->stream, ",%d", GET_FIELD (insn, 23, 25));
 957                   break;
 958                 case 'F':
 959                   /* if no destination completer and not before a completer
 960                      for fcmp, need a space here */
 961                   if (s[1] == 'G' || s[1] == '?')
 962                     fputs_filtered (float_format_names[GET_FIELD (insn, 19, 20)],
 963                                     info);
 964                   else
 965                     (*info->fprintf_func) (info->stream, "%s ",
 966                                            float_format_names[GET_FIELD
 967                                                               (insn, 19, 20)]);
 968                   break;
 969                 case 'G':
 970                   (*info->fprintf_func) (info->stream, "%s ",
 971                                     float_format_names[GET_FIELD (insn,
 972                                                                   17, 18)]);
 973                   break;
 974                 case 'H':
 975                   if (GET_FIELD (insn, 26, 26) == 1)
 976                     (*info->fprintf_func) (info->stream, "%s ",
 977                                     float_format_names[0]);
 978                   else
 979                     (*info->fprintf_func) (info->stream, "%s ",
 980                                     float_format_names[1]);
 981                   break;
 982                 case 'I':
 983                   /* if no destination completer and not before a completer
 984                      for fcmp, need a space here */
 985                   if (s[1] == '?')
 986                     fputs_filtered (float_format_names[GET_FIELD (insn, 20, 20)],
 987                                     info);
 988                   else
 989                     (*info->fprintf_func) (info->stream, "%s ",
 990                                            float_format_names[GET_FIELD
 991                                                               (insn, 20, 20)]);
 992                   break;
 993
 994                 case 'J':
 995                   fput_const (extract_14 (insn), info);
 996                   break;
 997
 998                 case '#':
 999                   {
1000                     int sign = GET_FIELD (insn, 31, 31);
1001                     int imm10 = GET_FIELD (insn, 18, 27);
1002                     int disp;
1003
1004                     if (sign)
1005                       disp = (-1 << 10) | imm10;
1006                     else
1007                       disp = imm10;
1008
1009                     disp <<= 3;
1010                     fput_const (disp, info);
1011                     break;
1012                   }
1013                 case 'K':
1014                 case 'd':
1015                   {
1016                     int sign = GET_FIELD (insn, 31, 31);
1017                     int imm11 = GET_FIELD (insn, 18, 28);
1018                     int disp;
1019
1020                     if (sign)
1021                       disp = (-1 << 11) | imm11;
1022                     else
1023                       disp = imm11;
1024
1025                     disp <<= 2;
1026                     fput_const (disp, info);
1027                     break;
1028                   }
1029
1030                 /* ?!? FIXME */
1031                 case '_':
1032                 case '{':
1033                   fputs_filtered ("Disassembler botch.\n", info);
1034                   break;
1035
1036                 case 'm':
1037                   {
1038                     int y = GET_FIELD (insn, 16, 18);
1039
1040                     if (y != 1)
1041                       fput_const ((y ^ 1) - 1, info);
1042                   }
1043                   break;
1044
1045                 case 'h':
1046                   {
1047                     int cbit;
1048
1049                     cbit = GET_FIELD (insn, 16, 18);
1050
1051                     if (cbit > 0)
1052                       (*info->fprintf_func) (info->stream, ",%d", cbit - 1);
1053                     break;
1054                   }
1055
1056                 case '=':
1057                   {
1058                     int cond = GET_FIELD (insn, 27, 31);
1059
1060                     if (cond == 0)
1061                       fputs_filtered (" ", info);
1062                     else if (cond == 1)
1063                       fputs_filtered ("acc ", info);
1064                     else if (cond == 2)
1065                       fputs_filtered ("rej ", info);
1066                     else if (cond == 5)
1067                       fputs_filtered ("acc8 ", info);
1068                     else if (cond == 6)
1069                       fputs_filtered ("rej8 ", info);
1070                     else if (cond == 9)
1071                       fputs_filtered ("acc6 ", info);
1072                     else if (cond == 13)
1073                       fputs_filtered ("acc4 ", info);
1074                     else if (cond == 17)
1075                       fputs_filtered ("acc2 ", info);
1076                     break;
1077                   }
1078
1079                 case 'X':
1080                   (*info->print_address_func) ((memaddr + 8
1081                                                 + extract_22 (insn)),
1082                                                info);
1083                   break;
1084                 case 'Y':
1085                   /* be,l %sr0,%r31 implicit output.  */
1086                   (*info->fprintf_func) (info->stream, "%%sr0,%%r31");
1087                   break;
1088                 case 'L':
1089                   fputs_filtered (",%r2", info);
1090                   break;
1091                 default:
1092                   (*info->fprintf_func) (info->stream, "%c", *s);
1093                   break;
1094                 }
1095             }
1096           return sizeof(insn);
1097         }
1098     }
1099   (*info->fprintf_func) (info->stream, "#%8x", insn);
1100   return sizeof(insn);
1101 }