opcodes/i960-dis.c

   1 /* Disassemble i80960 instructions.
   2    Copyright 1990, 1991, 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2001
   3    Free Software Foundation, Inc.
   4
   5 This program is free software; you can redistribute it and/or modify
   6 it under the terms of the GNU General Public License as published by
   7 the Free Software Foundation; either version 2, or (at your option)
   8 any later version.
   9
  10 This program is distributed in the hope that it will be useful,
  11 but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 GNU General Public License for more details.
  14
  15 You should have received a copy of the GNU General Public License
  16 along with this program; see the file COPYING.  If not, write to the
  17 Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA
  18 02111-1307, USA.  */
  19
  20 #include "sysdep.h"
  21 #include "dis-asm.h"
  22
  23 static const char *const reg_names[] = {
  24 /*  0 */        "pfp", "sp",  "rip", "r3",  "r4",  "r5",  "r6",  "r7",
  25 /*  8 */        "r8",  "r9",  "r10", "r11", "r12", "r13", "r14", "r15",
  26 /* 16 */        "g0",  "g1",  "g2",  "g3",  "g4",  "g5",  "g6",  "g7",
  27 /* 24 */        "g8",  "g9",  "g10", "g11", "g12", "g13", "g14", "fp",
  28 /* 32 */        "pc",  "ac",  "ip",  "tc",  "fp0", "fp1", "fp2", "fp3"
  29 };
  30
  31
  32 static FILE *stream;            /* Output goes here */
  33 static struct disassemble_info *info;
  34 static void print_addr PARAMS ((bfd_vma));
  35 static void ctrl PARAMS ((bfd_vma, unsigned long, unsigned long));
  36 static void cobr PARAMS ((bfd_vma, unsigned long, unsigned long));
  37 static void reg PARAMS ((unsigned long));
  38 static int mem PARAMS ((bfd_vma, unsigned long, unsigned long, int));
  39 static void ea PARAMS ((bfd_vma, int, const char *, const char *, int, unsigned int));
  40 static void dstop PARAMS ((int, int, int));
  41 static void regop PARAMS ((int, int, int, int));
  42 static void invalid PARAMS ((int));
  43 static int pinsn PARAMS ((bfd_vma, unsigned long, unsigned long));
  44 static void put_abs PARAMS ((unsigned long, unsigned long));
  45
  46
  47 /* Print the i960 instruction at address 'memaddr' in debugged memory,
  48    on INFO->STREAM.  Returns length of the instruction, in bytes.  */
  49
  50 int
  51 print_insn_i960 (memaddr, info_arg)
  52     bfd_vma memaddr;
  53     struct disassemble_info *info_arg;
  54 {
  55   unsigned int word1, word2 = 0xdeadbeef;
  56   bfd_byte buffer[8];
  57   int status;
  58
  59   info = info_arg;
  60   stream = info->stream;
  61
  62   /* Read word1.  Only read word2 if the instruction
  63      needs it, to prevent reading past the end of a section.  */
  64
  65   status = (*info->read_memory_func) (memaddr, (bfd_byte *) buffer, 4, info);
  66   if (status != 0)
  67     {
  68       (*info->memory_error_func) (status, memaddr, info);
  69       return -1;
  70     }
  71
  72   word1 = bfd_getl32 (buffer);
  73
  74   /* Divide instruction set into classes based on high 4 bits of opcode.  */
  75   switch ( (word1 >> 28) & 0xf )
  76     {
  77     default:
  78       break;
  79     case 0x8:
  80     case 0x9:
  81     case 0xa:
  82     case 0xb:
  83     case 0xc:
  84       /* Read word2.  */
  85       status = (*info->read_memory_func)
  86         (memaddr + 4, (bfd_byte *) (buffer + 4), 4, info);
  87       if (status != 0)
  88         {
  89           (*info->memory_error_func) (status, memaddr, info);
  90           return -1;
  91         }
  92       word2 = bfd_getl32 (buffer + 4);
  93       break;
  94     }
  95
  96   return pinsn( memaddr, word1, word2 );
  97 }
  98 \f
  99 #define IN_GDB
 100
 101 /*****************************************************************************
 102  *      All code below this point should be identical with that of
 103  *      the disassembler in gdmp960.
 104
 105  A noble sentiment, but at least in cosmetic ways (info->fprintf_func), it
 106  just ain't so. -kingdon, 31 Mar 93
 107  *****************************************************************************/
 108
 109 struct tabent {
 110   char *name;
 111   short numops;
 112 };
 113
 114 struct sparse_tabent {
 115   int opcode;
 116   char *name;
 117   short numops;
 118 };
 119
 120 static int
 121 pinsn (memaddr, word1, word2)
 122      bfd_vma memaddr;
 123      unsigned long word1, word2;
 124 {
 125   int instr_len;
 126
 127   instr_len = 4;
 128   put_abs (word1, word2);
 129
 130   /* Divide instruction set into classes based on high 4 bits of opcode.  */
 131   switch ((word1 >> 28) & 0xf)
 132     {
 133     case 0x0:
 134     case 0x1:
 135       ctrl (memaddr, word1, word2);
 136       break;
 137     case 0x2:
 138     case 0x3:
 139       cobr (memaddr, word1, word2);
 140       break;
 141     case 0x5:
 142     case 0x6:
 143     case 0x7:
 144       reg (word1);
 145       break;
 146     case 0x8:
 147     case 0x9:
 148     case 0xa:
 149     case 0xb:
 150     case 0xc:
 151       instr_len = mem (memaddr, word1, word2, 0);
 152       break;
 153     default:
 154       /* Invalid instruction, print as data word.  */
 155       invalid (word1);
 156       break;
 157     }
 158   return instr_len;
 159 }
 160
 161 /* CTRL format.. */
 162
 163 static void
 164 ctrl (memaddr, word1, word2)
 165      bfd_vma memaddr;
 166      unsigned long word1;
 167      unsigned long word2 ATTRIBUTE_UNUSED;
 168 {
 169   int i;
 170   static const struct tabent ctrl_tab[] = {
 171     { NULL,             0, },   /* 0x00 */
 172     { NULL,             0, },   /* 0x01 */
 173     { NULL,             0, },   /* 0x02 */
 174     { NULL,             0, },   /* 0x03 */
 175     { NULL,             0, },   /* 0x04 */
 176     { NULL,             0, },   /* 0x05 */
 177     { NULL,             0, },   /* 0x06 */
 178     { NULL,             0, },   /* 0x07 */
 179     { "b",              1, },   /* 0x08 */
 180     { "call",           1, },   /* 0x09 */
 181     { "ret",            0, },   /* 0x0a */
 182     { "bal",            1, },   /* 0x0b */
 183     { NULL,             0, },   /* 0x0c */
 184     { NULL,             0, },   /* 0x0d */
 185     { NULL,             0, },   /* 0x0e */
 186     { NULL,             0, },   /* 0x0f */
 187     { "bno",            1, },   /* 0x10 */
 188     { "bg",             1, },   /* 0x11 */
 189     { "be",             1, },   /* 0x12 */
 190     { "bge",            1, },   /* 0x13 */
 191     { "bl",             1, },   /* 0x14 */
 192     { "bne",            1, },   /* 0x15 */
 193     { "ble",            1, },   /* 0x16 */
 194     { "bo",             1, },   /* 0x17 */
 195     { "faultno",        0, },   /* 0x18 */
 196     { "faultg",         0, },   /* 0x19 */
 197     { "faulte",         0, },   /* 0x1a */
 198     { "faultge",        0, },   /* 0x1b */
 199     { "faultl",         0, },   /* 0x1c */
 200     { "faultne",        0, },   /* 0x1d */
 201     { "faultle",        0, },   /* 0x1e */
 202     { "faulto",         0, },   /* 0x1f */
 203   };
 204
 205   i = (word1 >> 24) & 0xff;
 206   if ((ctrl_tab[i].name == NULL) || ((word1 & 1) != 0))
 207     {
 208       invalid (word1);
 209       return;
 210     }
 211
 212   (*info->fprintf_func) (stream, ctrl_tab[i].name);
 213   if (word1 & 2)
 214     /* Predicts branch not taken.  */
 215     (*info->fprintf_func) (stream, ".f");
 216
 217   if (ctrl_tab[i].numops == 1)
 218     {
 219       /* Extract displacement and convert to address.  */
 220       word1 &= 0x00ffffff;
 221
 222       if (word1 & 0x00800000)
 223         {
 224           /* Sign bit is set.  */
 225           word1 |= (-1 & ~0xffffff);    /* Sign extend.  */
 226         }
 227
 228       (*info->fprintf_func) (stream, "\t");
 229       print_addr (word1 + memaddr);
 230     }
 231 }
 232
 233 /* COBR format.  */
 234
 235 static void
 236 cobr (memaddr, word1, word2)
 237      bfd_vma memaddr;
 238      unsigned long word1;
 239      unsigned long word2 ATTRIBUTE_UNUSED;
 240 {
 241   int src1;
 242   int src2;
 243   int i;
 244
 245   static const struct tabent cobr_tab[] = {
 246     { "testno", 1, },   /* 0x20 */
 247     { "testg",  1, },   /* 0x21 */
 248     { "teste",  1, },   /* 0x22 */
 249     { "testge", 1, },   /* 0x23 */
 250     { "testl",  1, },   /* 0x24 */
 251     { "testne", 1, },   /* 0x25 */
 252     { "testle", 1, },   /* 0x26 */
 253     { "testo",  1, },   /* 0x27 */
 254     { NULL,     0, },   /* 0x28 */
 255     { NULL,     0, },   /* 0x29 */
 256     { NULL,     0, },   /* 0x2a */
 257     { NULL,     0, },   /* 0x2b */
 258     { NULL,     0, },   /* 0x2c */
 259     { NULL,     0, },   /* 0x2d */
 260     { NULL,     0, },   /* 0x2e */
 261     { NULL,     0, },   /* 0x2f */
 262     { "bbc",    3, },   /* 0x30 */
 263     { "cmpobg", 3, },   /* 0x31 */
 264     { "cmpobe", 3, },   /* 0x32 */
 265     { "cmpobge",3, },   /* 0x33 */
 266     { "cmpobl", 3, },   /* 0x34 */
 267     { "cmpobne",3, },   /* 0x35 */
 268     { "cmpoble",3, },   /* 0x36 */
 269     { "bbs",    3, },   /* 0x37 */
 270     { "cmpibno",3, },   /* 0x38 */
 271     { "cmpibg", 3, },   /* 0x39 */
 272     { "cmpibe", 3, },   /* 0x3a */
 273     { "cmpibge",3, },   /* 0x3b */
 274     { "cmpibl", 3, },   /* 0x3c */
 275     { "cmpibne",3, },   /* 0x3d */
 276     { "cmpible",3, },   /* 0x3e */
 277     { "cmpibo", 3, },   /* 0x3f */
 278   };
 279
 280   i = ((word1 >> 24) & 0xff) - 0x20;
 281   if (cobr_tab[i].name == NULL)
 282     {
 283       invalid (word1);
 284       return;
 285     }
 286
 287   (*info->fprintf_func) (stream, cobr_tab[i].name);
 288
 289   /* Predicts branch not taken.  */
 290   if (word1 & 2)
 291     (*info->fprintf_func) (stream, ".f");
 292
 293   (*info->fprintf_func) (stream, "\t");
 294
 295   src1 = (word1 >> 19) & 0x1f;
 296   src2 = (word1 >> 14) & 0x1f;
 297
 298   if (word1 & 0x02000)
 299     /* M1 is 1 */
 300     (*info->fprintf_func) (stream, "%d", src1);
 301   else
 302     (*info->fprintf_func) (stream, reg_names[src1]);
 303
 304   if (cobr_tab[i].numops > 1)
 305     {
 306       if (word1 & 1)
 307         /* S2 is 1.  */
 308         (*info->fprintf_func) (stream, ",sf%d,", src2);
 309       else
 310         /* S1 is 0.  */
 311         (*info->fprintf_func) (stream, ",%s,", reg_names[src2]);
 312
 313       /* Extract displacement and convert to address.  */
 314       word1 &= 0x00001ffc;
 315       if (word1 & 0x00001000)
 316         /* Negative displacement.  */
 317         word1 |= (-1 & ~0x1fff);        /* Sign extend.  */
 318
 319       print_addr (memaddr + word1);
 320     }
 321 }
 322
 323 /* MEM format.  */
 324 /* Returns instruction length: 4 or 8.  */
 325
 326 static int
 327 mem (memaddr, word1, word2, noprint)
 328      bfd_vma memaddr;
 329      unsigned long word1, word2;
 330      int noprint;               /* If TRUE, return instruction length, but
 331                                    don't output any text.  */
 332 {
 333   int i, j;
 334   int len;
 335   int mode;
 336   int offset;
 337   const char *reg1, *reg2, *reg3;
 338
 339   /* This lookup table is too sparse to make it worth typing in, but not
 340      so large as to make a sparse array necessary.  We create the table
 341      at runtime.  */
 342
 343   /* NOTE: In this table, the meaning of 'numops' is:
 344       1: single operand
 345       2: 2 operands, load instruction
 346      -2: 2 operands, store instruction.  */
 347   static struct tabent *mem_tab;
 348   /* Opcodes of 0x8X, 9X, aX, bX, and cX must be in the table.  */
 349 #define MEM_MIN 0x80
 350 #define MEM_MAX 0xcf
 351 #define MEM_SIZ ( * sizeof(struct tabent))
 352
 353   static const struct sparse_tabent mem_init[] = {
 354     { 0x80,     "ldob",  2 },
 355     { 0x82,     "stob", -2 },
 356     { 0x84,     "bx",    1 },
 357     { 0x85,     "balx",  2 },
 358     { 0x86,     "callx", 1 },
 359     { 0x88,     "ldos",  2 },
 360     { 0x8a,     "stos", -2 },
 361     { 0x8c,     "lda",   2 },
 362     { 0x90,     "ld",    2 },
 363     { 0x92,     "st",   -2 },
 364     { 0x98,     "ldl",   2 },
 365     { 0x9a,     "stl",  -2 },
 366     { 0xa0,     "ldt",   2 },
 367     { 0xa2,     "stt",  -2 },
 368     { 0xac,     "dcinva", 1 },
 369     { 0xb0,     "ldq",   2 },
 370     { 0xb2,     "stq",  -2 },
 371     { 0xc0,     "ldib",  2 },
 372     { 0xc2,     "stib", -2 },
 373     { 0xc8,     "ldis",  2 },
 374     { 0xca,     "stis", -2 },
 375     { 0,        NULL,   0 }
 376   };
 377   static struct tabent mem_tab_buf[MEM_MAX - MEM_MIN + 1];
 378
 379   if (mem_tab == NULL)
 380     {
 381       mem_tab = mem_tab_buf;
 382
 383       for (i = 0; mem_init[i].opcode != 0; i++)
 384         {
 385           j = mem_init[i].opcode - MEM_MIN;
 386           mem_tab[j].name = mem_init[i].name;
 387           mem_tab[j].numops = mem_init[i].numops;
 388         }
 389     }
 390
 391   i = ((word1 >> 24) & 0xff) - MEM_MIN;
 392   mode = (word1 >> 10) & 0xf;
 393
 394   if ((mem_tab[i].name != NULL)         /* Valid instruction */
 395       && ((mode == 5) || (mode >= 12)))
 396     /* With 32-bit displacement.  */
 397     len = 8;
 398   else
 399     len = 4;
 400
 401   if (noprint)
 402     return len;
 403
 404   if ((mem_tab[i].name == NULL) || (mode == 6))
 405     {
 406       invalid (word1);
 407       return len;
 408     }
 409
 410   (*info->fprintf_func) (stream, "%s\t", mem_tab[i].name);
 411
 412   reg1 = reg_names[ (word1 >> 19) & 0x1f ];     /* MEMB only */
 413   reg2 = reg_names[ (word1 >> 14) & 0x1f ];
 414   reg3 = reg_names[ word1 & 0x1f ];             /* MEMB only */
 415   offset = word1 & 0xfff;                               /* MEMA only  */
 416
 417   switch (mem_tab[i].numops)
 418     {
 419     case 2: /* LOAD INSTRUCTION */
 420       if (mode & 4)
 421         {                       /* MEMB FORMAT */
 422           ea (memaddr, mode, reg2, reg3, word1, word2);
 423           (*info->fprintf_func) (stream, ",%s", reg1);
 424         }
 425       else
 426         {                               /* MEMA FORMAT */
 427           (*info->fprintf_func) (stream, "0x%x", (unsigned) offset);
 428
 429           if (mode & 8)
 430             (*info->fprintf_func) (stream, "(%s)", reg2);
 431
 432           (*info->fprintf_func)(stream, ",%s", reg1);
 433         }
 434       break;
 435
 436     case -2: /* STORE INSTRUCTION */
 437       if (mode & 4)
 438         {
 439           /* MEMB FORMAT */
 440           (*info->fprintf_func) (stream, "%s,", reg1);
 441           ea (memaddr, mode, reg2, reg3, word1, word2);
 442         }
 443       else
 444         {
 445           /* MEMA FORMAT */
 446           (*info->fprintf_func) (stream, "%s,0x%x", reg1, (unsigned) offset);
 447
 448           if (mode & 8)
 449             (*info->fprintf_func) (stream, "(%s)", reg2);
 450         }
 451       break;
 452
 453     case 1: /* BX/CALLX INSTRUCTION */
 454       if (mode & 4)
 455         {
 456           /* MEMB FORMAT */
 457           ea (memaddr, mode, reg2, reg3, word1, word2);
 458         }
 459       else
 460         {
 461           /* MEMA FORMAT */
 462           (*info->fprintf_func) (stream, "0x%x", (unsigned) offset);
 463           if (mode & 8)
 464             (*info->fprintf_func) (stream, "(%s)", reg2);
 465         }
 466       break;
 467     }
 468
 469   return len;
 470 }
 471
 472 /* REG format.  */
 473
 474 static void
 475 reg (word1)
 476      unsigned long word1;
 477 {
 478   int i, j;
 479   int opcode;
 480   int fp;
 481   int m1, m2, m3;
 482   int s1, s2;
 483   int src, src2, dst;
 484   char *mnemp;
 485
 486   /* This lookup table is too sparse to make it worth typing in, but not
 487      so large as to make a sparse array necessary.  We create the table
 488      at runtime.  */
 489
 490   /* NOTE: In this table, the meaning of 'numops' is:
 491          1: single operand, which is NOT a destination.
 492         -1: single operand, which IS a destination.
 493          2: 2 operands, the 2nd of which is NOT a destination.
 494         -2: 2 operands, the 2nd of which IS a destination.
 495          3: 3 operands
 496
 497         If an opcode mnemonic begins with "F", it is a floating-point
 498         opcode (the "F" is not printed).  */
 499
 500   static struct tabent *reg_tab;
 501   static const struct sparse_tabent reg_init[] =
 502   {
 503 #define REG_MIN 0x580
 504     { 0x580,    "notbit",       3 },
 505     { 0x581,    "and",          3 },
 506     { 0x582,    "andnot",       3 },
 507     { 0x583,    "setbit",       3 },
 508     { 0x584,    "notand",       3 },
 509     { 0x586,    "xor",          3 },
 510     { 0x587,    "or",           3 },
 511     { 0x588,    "nor",          3 },
 512     { 0x589,    "xnor",         3 },
 513     { 0x58a,    "not",          -2 },
 514     { 0x58b,    "ornot",        3 },
 515     { 0x58c,    "clrbit",       3 },
 516     { 0x58d,    "notor",        3 },
 517     { 0x58e,    "nand",         3 },
 518     { 0x58f,    "alterbit",     3 },
 519     { 0x590,    "addo",         3 },
 520     { 0x591,    "addi",         3 },
 521     { 0x592,    "subo",         3 },
 522     { 0x593,    "subi",         3 },
 523     { 0x594,    "cmpob",        2 },
 524     { 0x595,    "cmpib",        2 },
 525     { 0x596,    "cmpos",        2 },
 526     { 0x597,    "cmpis",        2 },
 527     { 0x598,    "shro",         3 },
 528     { 0x59a,    "shrdi",        3 },
 529     { 0x59b,    "shri",         3 },
 530     { 0x59c,    "shlo",         3 },
 531     { 0x59d,    "rotate",       3 },
 532     { 0x59e,    "shli",         3 },
 533     { 0x5a0,    "cmpo",         2 },
 534     { 0x5a1,    "cmpi",         2 },
 535     { 0x5a2,    "concmpo",      2 },
 536     { 0x5a3,    "concmpi",      2 },
 537     { 0x5a4,    "cmpinco",      3 },
 538     { 0x5a5,    "cmpinci",      3 },
 539     { 0x5a6,    "cmpdeco",      3 },
 540     { 0x5a7,    "cmpdeci",      3 },
 541     { 0x5ac,    "scanbyte",     2 },
 542     { 0x5ad,    "bswap",        -2 },
 543     { 0x5ae,    "chkbit",       2 },
 544     { 0x5b0,    "addc",         3 },
 545     { 0x5b2,    "subc",         3 },
 546     { 0x5b4,    "intdis",       0 },
 547     { 0x5b5,    "inten",        0 },
 548     { 0x5cc,    "mov",          -2 },
 549     { 0x5d8,    "eshro",        3 },
 550     { 0x5dc,    "movl",         -2 },
 551     { 0x5ec,    "movt",         -2 },
 552     { 0x5fc,    "movq",         -2 },
 553     { 0x600,    "synmov",       2 },
 554     { 0x601,    "synmovl",      2 },
 555     { 0x602,    "synmovq",      2 },
 556     { 0x603,    "cmpstr",       3 },
 557     { 0x604,    "movqstr",      3 },
 558     { 0x605,    "movstr",       3 },
 559     { 0x610,    "atmod",        3 },
 560     { 0x612,    "atadd",        3 },
 561     { 0x613,    "inspacc",      -2 },
 562     { 0x614,    "ldphy",        -2 },
 563     { 0x615,    "synld",        -2 },
 564     { 0x617,    "fill",         3 },
 565     { 0x630,    "sdma",         3 },
 566     { 0x631,    "udma",         0 },
 567     { 0x640,    "spanbit",      -2 },
 568     { 0x641,    "scanbit",      -2 },
 569     { 0x642,    "daddc",        3 },
 570     { 0x643,    "dsubc",        3 },
 571     { 0x644,    "dmovt",        -2 },
 572     { 0x645,    "modac",        3 },
 573     { 0x646,    "condrec",      -2 },
 574     { 0x650,    "modify",       3 },
 575     { 0x651,    "extract",      3 },
 576     { 0x654,    "modtc",        3 },
 577     { 0x655,    "modpc",        3 },
 578     { 0x656,    "receive",      -2 },
 579     { 0x658,    "intctl",       -2 },
 580     { 0x659,    "sysctl",       3 },
 581     { 0x65b,    "icctl",        3 },
 582     { 0x65c,    "dcctl",        3 },
 583     { 0x65d,    "halt",         0 },
 584     { 0x660,    "calls",        1 },
 585     { 0x662,    "send",         3 },
 586     { 0x663,    "sendserv",     1 },
 587     { 0x664,    "resumprcs",    1 },
 588     { 0x665,    "schedprcs",    1 },
 589     { 0x666,    "saveprcs",     0 },
 590     { 0x668,    "condwait",     1 },
 591     { 0x669,    "wait",         1 },
 592     { 0x66a,    "signal",       1 },
 593     { 0x66b,    "mark",         0 },
 594     { 0x66c,    "fmark",        0 },
 595     { 0x66d,    "flushreg",     0 },
 596     { 0x66f,    "syncf",        0 },
 597     { 0x670,    "emul",         3 },
 598     { 0x671,    "ediv",         3 },
 599     { 0x673,    "ldtime",       -1 },
 600     { 0x674,    "Fcvtir",       -2 },
 601     { 0x675,    "Fcvtilr",      -2 },
 602     { 0x676,    "Fscalerl",     3 },
 603     { 0x677,    "Fscaler",      3 },
 604     { 0x680,    "Fatanr",       3 },
 605     { 0x681,    "Flogepr",      3 },
 606     { 0x682,    "Flogr",        3 },
 607     { 0x683,    "Fremr",        3 },
 608     { 0x684,    "Fcmpor",       2 },
 609     { 0x685,    "Fcmpr",        2 },
 610     { 0x688,    "Fsqrtr",       -2 },
 611     { 0x689,    "Fexpr",        -2 },
 612     { 0x68a,    "Flogbnr",      -2 },
 613     { 0x68b,    "Froundr",      -2 },
 614     { 0x68c,    "Fsinr",        -2 },
 615     { 0x68d,    "Fcosr",        -2 },
 616     { 0x68e,    "Ftanr",        -2 },
 617     { 0x68f,    "Fclassr",      1 },
 618     { 0x690,    "Fatanrl",      3 },
 619     { 0x691,    "Flogeprl",     3 },
 620     { 0x692,    "Flogrl",       3 },
 621     { 0x693,    "Fremrl",       3 },
 622     { 0x694,    "Fcmporl",      2 },
 623     { 0x695,    "Fcmprl",       2 },
 624     { 0x698,    "Fsqrtrl",      -2 },
 625     { 0x699,    "Fexprl",       -2 },
 626     { 0x69a,    "Flogbnrl",     -2 },
 627     { 0x69b,    "Froundrl",     -2 },
 628     { 0x69c,    "Fsinrl",       -2 },
 629     { 0x69d,    "Fcosrl",       -2 },
 630     { 0x69e,    "Ftanrl",       -2 },
 631     { 0x69f,    "Fclassrl",     1 },
 632     { 0x6c0,    "Fcvtri",       -2 },
 633     { 0x6c1,    "Fcvtril",      -2 },
 634     { 0x6c2,    "Fcvtzri",      -2 },
 635     { 0x6c3,    "Fcvtzril",     -2 },
 636     { 0x6c9,    "Fmovr",        -2 },
 637     { 0x6d9,    "Fmovrl",       -2 },
 638     { 0x6e1,    "Fmovre",       -2 },
 639     { 0x6e2,    "Fcpysre",      3 },
 640     { 0x6e3,    "Fcpyrsre",     3 },
 641     { 0x701,    "mulo",         3 },
 642     { 0x708,    "remo",         3 },
 643     { 0x70b,    "divo",         3 },
 644     { 0x741,    "muli",         3 },
 645     { 0x748,    "remi",         3 },
 646     { 0x749,    "modi",         3 },
 647     { 0x74b,    "divi",         3 },
 648     { 0x780,    "addono",       3 },
 649     { 0x781,    "addino",       3 },
 650     { 0x782,    "subono",       3 },
 651     { 0x783,    "subino",       3 },
 652     { 0x784,    "selno",        3 },
 653     { 0x78b,    "Fdivr",        3 },
 654     { 0x78c,    "Fmulr",        3 },
 655     { 0x78d,    "Fsubr",        3 },
 656     { 0x78f,    "Faddr",        3 },
 657     { 0x790,    "addog",        3 },
 658     { 0x791,    "addig",        3 },
 659     { 0x792,    "subog",        3 },
 660     { 0x793,    "subig",        3 },
 661     { 0x794,    "selg",         3 },
 662     { 0x79b,    "Fdivrl",       3 },
 663     { 0x79c,    "Fmulrl",       3 },
 664     { 0x79d,    "Fsubrl",       3 },
 665     { 0x79f,    "Faddrl",       3 },
 666     { 0x7a0,    "addoe",        3 },
 667     { 0x7a1,    "addie",        3 },
 668     { 0x7a2,    "suboe",        3 },
 669     { 0x7a3,    "subie",        3 },
 670     { 0x7a4,    "sele",         3 },
 671     { 0x7b0,    "addoge",       3 },
 672     { 0x7b1,    "addige",       3 },
 673     { 0x7b2,    "suboge",       3 },
 674     { 0x7b3,    "subige",       3 },
 675     { 0x7b4,    "selge",        3 },
 676     { 0x7c0,    "addol",        3 },
 677     { 0x7c1,    "addil",        3 },
 678     { 0x7c2,    "subol",        3 },
 679     { 0x7c3,    "subil",        3 },
 680     { 0x7c4,    "sell",         3 },
 681     { 0x7d0,    "addone",       3 },
 682     { 0x7d1,    "addine",       3 },
 683     { 0x7d2,    "subone",       3 },
 684     { 0x7d3,    "subine",       3 },
 685     { 0x7d4,    "selne",        3 },
 686     { 0x7e0,    "addole",       3 },
 687     { 0x7e1,    "addile",       3 },
 688     { 0x7e2,    "subole",       3 },
 689     { 0x7e3,    "subile",       3 },
 690     { 0x7e4,    "selle",        3 },
 691     { 0x7f0,    "addoo",        3 },
 692     { 0x7f1,    "addio",        3 },
 693     { 0x7f2,    "suboo",        3 },
 694     { 0x7f3,    "subio",        3 },
 695     { 0x7f4,    "selo",         3 },
 696 #define REG_MAX 0x7f4
 697     { 0,        NULL,           0 }
 698   };
 699   static struct tabent reg_tab_buf[REG_MAX - REG_MIN + 1];
 700
 701   if (reg_tab == NULL)
 702     {
 703       reg_tab = reg_tab_buf;
 704
 705       for (i = 0; reg_init[i].opcode != 0; i++)
 706         {
 707           j = reg_init[i].opcode - REG_MIN;
 708           reg_tab[j].name = reg_init[i].name;
 709           reg_tab[j].numops = reg_init[i].numops;
 710         }
 711     }
 712
 713   opcode = ((word1 >> 20) & 0xff0) | ((word1 >> 7) & 0xf);
 714   i = opcode - REG_MIN;
 715
 716   if ((opcode<REG_MIN) || (opcode>REG_MAX) || (reg_tab[i].name==NULL))
 717     {
 718       invalid (word1);
 719       return;
 720     }
 721
 722   mnemp = reg_tab[i].name;
 723   if (*mnemp == 'F')
 724     {
 725       fp = 1;
 726       mnemp++;
 727     }
 728   else
 729     {
 730       fp = 0;
 731     }
 732
 733   (*info->fprintf_func) (stream, mnemp);
 734
 735   s1   = (word1 >> 5)  & 1;
 736   s2   = (word1 >> 6)  & 1;
 737   m1   = (word1 >> 11) & 1;
 738   m2   = (word1 >> 12) & 1;
 739   m3   = (word1 >> 13) & 1;
 740   src  =  word1        & 0x1f;
 741   src2 = (word1 >> 14) & 0x1f;
 742   dst  = (word1 >> 19) & 0x1f;
 743
 744   if  (reg_tab[i].numops != 0)
 745     {
 746       (*info->fprintf_func) (stream, "\t");
 747
 748     switch (reg_tab[i].numops)
 749       {
 750       case 1:
 751         regop (m1, s1, src, fp);
 752         break;
 753       case -1:
 754         dstop (m3, dst, fp);
 755         break;
 756       case 2:
 757         regop (m1, s1, src, fp);
 758         (*info->fprintf_func) (stream, ",");
 759         regop (m2, s2, src2, fp);
 760         break;
 761       case -2:
 762         regop (m1, s1, src, fp);
 763         (*info->fprintf_func) (stream, ",");
 764         dstop (m3, dst, fp);
 765         break;
 766       case 3:
 767         regop (m1, s1, src, fp);
 768         (*info->fprintf_func) (stream, ",");
 769         regop (m2, s2, src2, fp);
 770         (*info->fprintf_func) (stream, ",");
 771         dstop (m3, dst, fp);
 772         break;
 773       }
 774     }
 775 }
 776
 777 /* Print out effective address for memb instructions.  */
 778
 779 static void
 780 ea (memaddr, mode, reg2, reg3, word1, word2)
 781      bfd_vma memaddr;
 782      int mode;
 783      const char *reg2;
 784      const char *reg3;
 785      int word1;
 786      unsigned int word2;
 787 {
 788   int scale;
 789   static const int scale_tab[] = { 1, 2, 4, 8, 16 };
 790
 791   scale = (word1 >> 7) & 0x07;
 792
 793   if ((scale > 4) || (((word1 >> 5) & 0x03) != 0))
 794     {
 795       invalid (word1);
 796       return;
 797     }
 798   scale = scale_tab[scale];
 799
 800   switch (mode)
 801     {
 802     case 4:                                             /* (reg) */
 803       (*info->fprintf_func)( stream, "(%s)", reg2 );
 804       break;
 805     case 5:                                             /* displ+8(ip) */
 806       print_addr (word2 + 8 + memaddr);
 807       break;
 808     case 7:                                             /* (reg)[index*scale] */
 809       if (scale == 1)
 810         (*info->fprintf_func) (stream, "(%s)[%s]", reg2, reg3);
 811       else
 812         (*info->fprintf_func) (stream, "(%s)[%s*%d]", reg2, reg3, scale);
 813       break;
 814     case 12:                                    /* displacement */
 815       print_addr ((bfd_vma) word2);
 816       break;
 817     case 13:                                    /* displ(reg) */
 818       print_addr ((bfd_vma) word2);
 819       (*info->fprintf_func) (stream, "(%s)", reg2);
 820       break;
 821     case 14:                                    /* displ[index*scale] */
 822       print_addr ((bfd_vma) word2);
 823       if (scale == 1)
 824         (*info->fprintf_func) (stream, "[%s]", reg3);
 825       else
 826         (*info->fprintf_func) (stream, "[%s*%d]", reg3, scale);
 827       break;
 828     case 15:                            /* displ(reg)[index*scale] */
 829       print_addr ((bfd_vma) word2);
 830       if (scale == 1)
 831         (*info->fprintf_func) (stream, "(%s)[%s]", reg2, reg3);
 832       else
 833         (*info->fprintf_func) (stream, "(%s)[%s*%d]", reg2, reg3, scale);
 834       break;
 835     default:
 836       invalid (word1);
 837       return;
 838     }
 839 }
 840
 841
 842 /* Register Instruction Operand.  */
 843
 844 static void
 845 regop (mode, spec, reg, fp)
 846      int mode, spec, reg, fp;
 847 {
 848   if (fp)
 849     {
 850       /* Floating point instruction.  */
 851       if (mode == 1)
 852         {
 853           /* FP operand.  */
 854           switch (reg)
 855             {
 856             case 0:  (*info->fprintf_func) (stream, "fp0");
 857               break;
 858             case 1:  (*info->fprintf_func) (stream, "fp1");
 859               break;
 860             case 2:  (*info->fprintf_func) (stream, "fp2");
 861               break;
 862             case 3:  (*info->fprintf_func) (stream, "fp3");
 863               break;
 864             case 16: (*info->fprintf_func) (stream, "0f0.0");
 865               break;
 866             case 22: (*info->fprintf_func) (stream, "0f1.0");
 867               break;
 868             default: (*info->fprintf_func) (stream, "?");
 869               break;
 870             }
 871         }
 872       else
 873         {
 874           /* Non-FP register.  */
 875           (*info->fprintf_func) (stream, reg_names[reg]);
 876         }
 877     }
 878   else
 879     {
 880       /* Not floating point.  */
 881       if (mode == 1)
 882         {
 883           /* Literal.  */
 884           (*info->fprintf_func) (stream, "%d", reg);
 885         }
 886       else
 887         {
 888           /* Register.  */
 889           if (spec == 0)
 890             (*info->fprintf_func) (stream, reg_names[reg]);
 891           else
 892             (*info->fprintf_func) (stream, "sf%d", reg);
 893         }
 894     }
 895 }
 896
 897 /* Register Instruction Destination Operand.  */
 898
 899 static void
 900 dstop (mode, reg, fp)
 901      int mode, reg, fp;
 902 {
 903   /* 'dst' operand can't be a literal. On non-FP instructions,  register
 904      mode is assumed and "m3" acts as if were "s3";  on FP-instructions,
 905      sf registers are not allowed so m3 acts normally.  */
 906   if (fp)
 907     regop (mode, 0, reg, fp);
 908   else
 909     regop (0, mode, reg, fp);
 910 }
 911
 912 static void
 913 invalid (word1)
 914      int word1;
 915 {
 916   (*info->fprintf_func) (stream, ".word\t0x%08x", (unsigned) word1);
 917 }
 918
 919 static void
 920 print_addr (a)
 921      bfd_vma a;
 922 {
 923   (*info->print_address_func) (a, info);
 924 }
 925
 926 static void
 927 put_abs (word1, word2)
 928      unsigned long word1 ATTRIBUTE_UNUSED;
 929      unsigned long word2 ATTRIBUTE_UNUSED;
 930 {
 931 #ifdef IN_GDB
 932   return;
 933 #else
 934   int len;
 935
 936   switch ((word1 >> 28) & 0xf)
 937     {
 938     case 0x8:
 939     case 0x9:
 940     case 0xa:
 941     case 0xb:
 942     case 0xc:
 943       /* MEM format instruction.  */
 944       len = mem (0, word1, word2, 1);
 945       break;
 946     default:
 947       len = 4;
 948       break;
 949     }
 950
 951   if (len == 8)
 952     (*info->fprintf_func) (stream, "%08x %08x\t", word1, word2);
 953   else
 954     (*info->fprintf_func) (stream, "%08x         \t", word1);
 955 #endif
 956 }