opcodes/maxq-dis.c

   1 /* Instruction printing code for the MAXQ
   2
   3    Copyright 2004, 2005, 2007, 2009, 2010 Free Software Foundation, Inc.
   4
   5    Written by Vineet Sharma(vineets@noida.hcltech.com) Inderpreet
   6    S.(inderpreetb@noida.hcltech.com)
   7
   8    This file is part of the GNU opcodes library.
   9
  10    This library is free software; you can redistribute it and/or modify
  11    it under the terms of the GNU General Public License as published by
  12    the Free Software Foundation; either version 3, or (at your option)
  13    any later version.
  14
  15    It is distributed in the hope that it will be useful, but WITHOUT
  16    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  17    or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
  18    License for more details.
  19
  20    You should have received a copy of the GNU General Public License along
  21    with this program; if not, write to the Free Software Foundation, Inc.,
  22    51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.  */
  23
  24 #include "sysdep.h"
  25 #include "dis-asm.h"
  26 #include "opcode/maxq.h"
  27
  28 struct _group_info
  29 {
  30   unsigned char group_no;
  31   unsigned char sub_opcode;
  32   unsigned char src;
  33   unsigned char dst;
  34   unsigned char fbit;
  35   unsigned char bit_no;
  36   unsigned char flag;
  37
  38 };
  39
  40 typedef struct _group_info group_info;
  41
  42 #define SRC     0x01
  43 #define DST     0x02
  44 #define FORMAT  0x04
  45 #define BIT_NO  0x08
  46 #define SUB_OP  0x10
  47
  48 #define MASK_LOW_BYTE 0x0f
  49 #define MASK_HIGH_BYTE 0xf0
  50
  51 /* Flags for retrieving the bits from the op-code.  */
  52 #define _DECODE_LOWNIB_LOWBYTE  0x000f
  53 #define _DECODE_HIGHNIB_LOWBYTE 0x00f0
  54 #define _DECODE_LOWNIB_HIGHBYTE 0x0f00
  55 #define _DECODE_HIGHNIB_HIGHBYTE 0xf000
  56 #define _DECODE_HIGHBYTE 0xff00
  57 #define _DECODE_LOWBYTE  0x00ff
  58 #define _DECODE_4TO6_HIGHBYTE 0x7000
  59 #define _DECODE_4TO6_LOWBYTE 0x0070
  60 #define _DECODE_0TO6_HIGHBYTE 0x7f00
  61 #define _DECODE_0TO2_HIGHBYTE 0x0700
  62 #define _DECODE_GET_F_HIGHBYTE 0x8000
  63 #define _DECODE_BIT7_HIGHBYTE 0x8000
  64 #define _DECODE_BIT7_LOWBYTE 0x0080
  65 #define _DECODE_GET_CARRY 0x10000
  66 #define _DECODE_BIT0_LOWBYTE 0x1
  67 #define _DECODE_BIT6AND7_HIGHBYTE 0xc000
  68
  69 /* Module and Register Indexed of System Registers.  */
  70 #define _CURR_ACC_MODINDEX 0xa
  71 #define _CURR_ACC_REGINDEX 0x0
  72 #define _PSF_REG_MODINDEX  0x8
  73 #define _PSF_REG_REGINDEX  0x4
  74 #define _PFX_REG_MODINDEX  0xb
  75 #define _PFX0_REG_REGINDEX 0x0
  76 #define _PFX2_REG_REGINDEX 0x2
  77 #define _DP_REG_MODINDEX   0xf
  78 #define _DP0_REG_REGINDEX  0x3
  79 #define _DP1_REG_REGINDEX  0x7
  80 #define _IP_REG_MODINDEX   0xc
  81 #define _IP_REG_REGINDEX   0x0
  82 #define _IIR_REG_MODINDEX  0x8
  83 #define _IIR_REG_REGINDEX  0xb
  84 #define _SP_REG_MODINDEX   0xd
  85 #define _SP_REG_REGINDEX   0x1
  86 #define _IC_REG_MODINDEX   0x8
  87 #define _IC_REG_REGINDEX   0x5
  88 #define _LC_REG_MODINDEX   0xe
  89 #define _LC0_REG_REGINDEX  0x0
  90 #define _LC1_REG_REGINDEX  0x1
  91 #define _LC2_REG_REGINDEX  0x2
  92 #define _LC3_REG_REGINDEX  0x3
  93
  94 /* Flags for finding the bits in PSF Register.  */
  95 #define SIM_ALU_DECODE_CARRY_BIT_POS  0x2
  96 #define SIM_ALU_DECODE_SIGN_BIT_POS   0x40
  97 #define SIM_ALU_DECODE_ZERO_BIT_POS   0x80
  98 #define SIM_ALU_DECODE_EQUAL_BIT_POS  0x1
  99 #define SIM_ALU_DECODE_IGE_BIT_POS    0x1
 100
 101 /* Number Of Op-code Groups.  */
 102 unsigned char const SIM_ALU_DECODE_OPCODE_GROUPS = 11;
 103
 104 /* Op-code Groups.  */
 105 unsigned char const SIM_ALU_DECODE_LOGICAL_XCHG_OP_GROUP = 1;
 106
 107 /* Group1: AND/OR/XOR/ADD/SUB Operations: fxxx 1010 ssss ssss.  */
 108 unsigned char const SIM_ALU_DECODE_AND_OR_ADD_SUB_OP_GROUP = 2;
 109
 110 /* Group2: Logical Operations: 1000 1010 xxxx 1010.  */
 111 unsigned char const SIM_ALU_DECODE_BIT_OP_GROUP = 3;
 112
 113 /* XCHG/Bit Operations: 1xxx 1010 xxxx 1010.  */
 114 unsigned char const SIM_ALU_DECODE_SET_DEST_BIT_GROUP = 4;
 115
 116 /* Move value in bit of destination register: 1ddd dddd xbbb 0111.  */
 117 unsigned char const SIM_ALU_DECODE_JUMP_OP_GROUP = 5;
 118
 119 #define JUMP_CHECK(insn)   \
 120    (   ((insn & _DECODE_4TO6_HIGHBYTE) == 0x0000) \
 121     || ((insn & _DECODE_4TO6_HIGHBYTE) == 0x2000) \
 122     || ((insn & _DECODE_4TO6_HIGHBYTE) == 0x6000) \
 123     || ((insn & _DECODE_4TO6_HIGHBYTE) == 0x1000) \
 124     || ((insn & _DECODE_4TO6_HIGHBYTE) == 0x5000) \
 125     || ((insn & _DECODE_4TO6_HIGHBYTE) == 0x3000) \
 126     || ((insn & _DECODE_4TO6_HIGHBYTE) == 0x7000) \
 127     || ((insn & _DECODE_4TO6_HIGHBYTE) == 0x4000) )
 128
 129 /* JUMP operations: fxxx 1100 ssss ssss */
 130 unsigned char const SIM_ALU_DECODE_RET_OP_GROUP = 6;
 131
 132 /* RET Operations: 1xxx 1100 0000 1101 */
 133 unsigned char const SIM_ALU_DECODE_MOVE_SRC_DST_GROUP = 7;
 134
 135 /* Move src into dest register: fddd dddd ssss ssss */
 136 unsigned char const SIM_ALU_DECODE_SET_SRC_BIT_GROUP = 8;
 137
 138 /* Move value in bit of source register: fbbb 0111 ssss ssss */
 139 unsigned char const SIM_ALU_DECODE_DJNZ_CALL_PUSH_OP_GROUP = 9;
 140
 141 /* PUSH, DJNZ and CALL operations: fxxx 1101 ssss ssss */
 142 unsigned char const SIM_ALU_DECODE_POP_OP_GROUP = 10;
 143
 144 /* POP operation: 1ddd dddd 0000 1101 */
 145 unsigned char const SIM_ALU_DECODE_CMP_SRC_OP_GROUP = 11;
 146
 147 /* GLOBAL */
 148 char unres_reg_name[20];
 149
 150 static char *
 151 get_reg_name (unsigned char reg_code, type1 arg_pos)
 152 {
 153   unsigned char module;
 154   unsigned char r_index;
 155   int ix = 0;
 156   reg_entry const *reg_x;
 157   mem_access_syntax const *syntax;
 158   mem_access *mem_acc;
 159
 160   module = 0;
 161   r_index = 0;
 162   module = (reg_code & MASK_LOW_BYTE);
 163   r_index = (reg_code & MASK_HIGH_BYTE);
 164   r_index = r_index >> 4;
 165
 166   /* Search the system register table.  */
 167   for (reg_x = &system_reg_table[0]; reg_x->reg_name != NULL; ++reg_x)
 168     if ((reg_x->Mod_name == module) && (reg_x->Mod_index == r_index))
 169       return reg_x->reg_name;
 170
 171   /* Serch pheripheral table.  */
 172   for (ix = 0; ix < num_of_reg; ix++)
 173     {
 174       reg_x = &new_reg_table[ix];
 175
 176       if ((reg_x->Mod_name == module) && (reg_x->Mod_index == r_index))
 177         return reg_x->reg_name;
 178     }
 179
 180   for (mem_acc = &mem_table[0]; mem_acc->name != NULL || !mem_acc; ++mem_acc)
 181     {
 182       if (reg_code == mem_acc->opcode)
 183         {
 184           for (syntax = mem_access_syntax_table;
 185                syntax != NULL && syntax->name;
 186                ++syntax)
 187             if (!strcmp (mem_acc->name, syntax->name))
 188               {
 189                 if ((arg_pos == syntax->type) || (syntax->type == BOTH))
 190                   return mem_acc->name;
 191
 192                 break;
 193               }
 194         }
 195     }
 196
 197   memset (unres_reg_name, 0, 20);
 198   sprintf (unres_reg_name, "%01x%01xh", r_index, module);
 199
 200   return unres_reg_name;
 201 }
 202
 203 static bfd_boolean
 204 check_move (unsigned char insn0, unsigned char insn8)
 205 {
 206   bfd_boolean first = FALSE;
 207   bfd_boolean second = FALSE;
 208   reg_entry const *reg_x;
 209   const unsigned char module1 = insn0 & MASK_LOW_BYTE;
 210   const unsigned char index1 = ((insn0 & 0x70) >> 4);
 211   const unsigned char module2 = insn8 & MASK_LOW_BYTE;
 212   const unsigned char index2 = ((insn8 & MASK_HIGH_BYTE) >> 4);
 213
 214   /* DST */
 215   if (((insn0 & MASK_LOW_BYTE) == MASK_LOW_BYTE)
 216       && ((index1 == 0) || (index1 == 1) || (index1 == 2) || (index1 == 5)
 217           || (index1 == 4) || (index1 == 6)))
 218     first = TRUE;
 219
 220   else if (((insn0 & MASK_LOW_BYTE) == 0x0D) && (index1 == 0))
 221     first = TRUE;
 222
 223   else if ((module1 == 0x0E)
 224            && ((index1 == 0) || (index1 == 1) || (index1 == 2)))
 225     first = TRUE;
 226
 227   else
 228     {
 229       for (reg_x = &system_reg_table[0]; reg_x->reg_name != NULL && reg_x;
 230            ++reg_x)
 231         {
 232           if ((reg_x->Mod_name == module1) && (reg_x->Mod_index == index1)
 233               && ((reg_x->rtype == Reg_16W) || (reg_x->rtype == Reg_8W)))
 234             {
 235               /* IP not allowed.  */
 236               if ((reg_x->Mod_name == 0x0C) && (reg_x->Mod_index == 0x00))
 237                 continue;
 238
 239               /* A[AP] not allowed.  */
 240               if ((reg_x->Mod_name == 0x0A) && (reg_x->Mod_index == 0x01))
 241                 continue;
 242               first = TRUE;
 243               break;
 244             }
 245         }
 246     }
 247
 248   if (!first)
 249     /* No need to check further.  */
 250     return FALSE;
 251
 252   if (insn0 & 0x80)
 253     {
 254       /* SRC */
 255       if (((insn8 & MASK_LOW_BYTE) == MASK_LOW_BYTE)
 256           && ((index2 == 0) || (index2 == 1) || (index2 == 2) || (index2 == 4)
 257               || (index2 == 5) || (index2 == 6)))
 258         second = TRUE;
 259
 260       else if (((insn8 & MASK_LOW_BYTE) == 0x0D) && (index2 == 0))
 261         second = TRUE;
 262
 263       else if ((module2 == 0x0E)
 264                && ((index2 == 0) || (index2 == 1) || (index2 == 2)))
 265         second = TRUE;
 266
 267       else
 268         {
 269           for (reg_x = &system_reg_table[0];
 270                reg_x->reg_name != NULL && reg_x;
 271                ++reg_x)
 272             {
 273               if ((reg_x->Mod_name == (insn8 & MASK_LOW_BYTE))
 274                   && (reg_x->Mod_index == (((insn8 & 0xf0) >> 4))))
 275                 {
 276                   second = TRUE;
 277                   break;
 278                 }
 279             }
 280         }
 281
 282       if (second)
 283         {
 284           if ((module1 == 0x0A && index1 == 0x0)
 285               && (module2 == 0x0A && index2 == 0x01))
 286             return FALSE;
 287
 288           return TRUE;
 289         }
 290
 291       return FALSE;
 292     }
 293
 294   return first;
 295 }
 296
 297 static void
 298 maxq_print_arg (MAX_ARG_TYPE              arg,
 299                 struct disassemble_info * info,
 300                 group_info                grp)
 301 {
 302   switch (arg)
 303     {
 304     case FLAG_C:
 305       info->fprintf_func (info->stream, "C");
 306       break;
 307     case FLAG_NC:
 308       info->fprintf_func (info->stream, "NC");
 309       break;
 310
 311     case FLAG_Z:
 312       info->fprintf_func (info->stream, "Z");
 313       break;
 314
 315     case FLAG_NZ:
 316       info->fprintf_func (info->stream, "NZ");
 317       break;
 318
 319     case FLAG_S:
 320       info->fprintf_func (info->stream, "S");
 321       break;
 322
 323     case FLAG_E:
 324       info->fprintf_func (info->stream, "E");
 325       break;
 326
 327     case FLAG_NE:
 328       info->fprintf_func (info->stream, "NE");
 329       break;
 330
 331     case ACC_BIT:
 332       info->fprintf_func (info->stream, "Acc");
 333       if ((grp.flag & BIT_NO) == BIT_NO)
 334         info->fprintf_func (info->stream, ".%d", grp.bit_no);
 335       break;
 336
 337     case A_BIT_0:
 338       info->fprintf_func (info->stream, "#0");
 339       break;
 340     case A_BIT_1:
 341       info->fprintf_func (info->stream, "#1");
 342       break;
 343
 344     default:
 345       break;
 346     }
 347 }
 348
 349 static unsigned char
 350 get_group (const unsigned int insn)
 351 {
 352   if (check_move ((insn >> 8), (insn & _DECODE_LOWBYTE)))
 353     return 8;
 354
 355   if ((insn & _DECODE_LOWNIB_HIGHBYTE) == 0x0A00)
 356     {
 357       /* && condition with sec part added on 26 May for resolving 2 & 3 grp
 358          conflict.  */
 359       if (((insn & _DECODE_LOWNIB_LOWBYTE) == 0x000A)
 360           && ((insn & _DECODE_GET_F_HIGHBYTE) == 0x8000))
 361         {
 362           if ((insn & _DECODE_HIGHNIB_HIGHBYTE) == 0x8000)
 363             return 2;
 364           else
 365             return 3;
 366         }
 367
 368       return 1;
 369     }
 370   else if ((insn & _DECODE_LOWNIB_HIGHBYTE) == 0x0C00)
 371     {
 372       if (((insn & _DECODE_LOWBYTE) == 0x000D) && JUMP_CHECK (insn)
 373           && ((insn & _DECODE_GET_F_HIGHBYTE) == 0x8000))
 374         return 6;
 375       else if ((insn & _DECODE_LOWBYTE) == 0x008D)
 376         return 7;
 377
 378       return 5;
 379     }
 380   else if (((insn & _DECODE_LOWNIB_HIGHBYTE) == 0x0D00)
 381            && (((insn & _DECODE_4TO6_HIGHBYTE) == 0x3000)
 382                || ((insn & _DECODE_4TO6_HIGHBYTE) == 0x4000)
 383                || ((insn & _DECODE_4TO6_HIGHBYTE) == 0x5000)
 384                || ((insn & _DECODE_4TO6_HIGHBYTE) == 0x0000)))
 385     return 10;
 386
 387   else if ((insn & _DECODE_LOWBYTE) == 0x000D)
 388     return 11;
 389
 390   else if ((insn & _DECODE_LOWBYTE) == 0x008D)
 391     return 12;
 392
 393   else if ((insn & _DECODE_0TO6_HIGHBYTE) == 0x7800)
 394     return 13;
 395
 396   else if ((insn & _DECODE_LOWNIB_HIGHBYTE) == 0x0700)
 397     return 9;
 398
 399   else if (((insn & _DECODE_LOWNIB_LOWBYTE) == 0x0007)
 400            && ((insn & _DECODE_GET_F_HIGHBYTE) == 0x8000))
 401     return 4;
 402
 403   return 8;
 404 }
 405
 406 static void
 407 get_insn_opcode (const unsigned int insn, group_info *i)
 408 {
 409   static unsigned char pfx_flag = 0;
 410   static unsigned char count_for_pfx = 0;
 411
 412   i->flag ^= i->flag;
 413   i->bit_no ^= i->bit_no;
 414   i->dst ^= i->dst;
 415   i->fbit ^= i->fbit;
 416   i->group_no ^= i->group_no;
 417   i->src ^= i->src;
 418   i->sub_opcode ^= i->sub_opcode;
 419
 420   if (count_for_pfx > 0)
 421     count_for_pfx++;
 422
 423   if (((insn >> 8) == 0x0b) || ((insn >> 8) == 0x2b))
 424     {
 425       pfx_flag = 1;
 426       count_for_pfx = 1;
 427     }
 428
 429   i->group_no = get_group (insn);
 430
 431   if (pfx_flag && (i->group_no == 0x0D) && (count_for_pfx == 2)
 432       && ((insn & _DECODE_0TO6_HIGHBYTE) == 0x7800))
 433     {
 434       i->group_no = 0x08;
 435       count_for_pfx = 0;
 436       pfx_flag ^= pfx_flag;
 437     }
 438
 439   switch (i->group_no)
 440     {
 441     case 1:
 442       i->sub_opcode = ((insn & _DECODE_4TO6_HIGHBYTE) >> 12);
 443       i->flag |= SUB_OP;
 444       i->src = ((insn & _DECODE_LOWBYTE));
 445       i->flag |= SRC;
 446       i->fbit = ((insn & _DECODE_GET_F_HIGHBYTE) >> 15);
 447       i->flag |= FORMAT;
 448       break;
 449
 450     case 2:
 451       i->sub_opcode = ((insn & _DECODE_HIGHNIB_LOWBYTE) >> 4);
 452       i->flag |= SUB_OP;
 453       break;
 454
 455     case 3:
 456       i->sub_opcode = ((insn & _DECODE_HIGHNIB_HIGHBYTE) >> 12);
 457       i->flag |= SUB_OP;
 458       i->bit_no = ((insn & _DECODE_HIGHNIB_LOWBYTE) >> 4);
 459       i->flag |= BIT_NO;
 460       break;
 461
 462     case 4:
 463       i->sub_opcode = ((insn & _DECODE_BIT7_LOWBYTE) >> 7);
 464       i->flag |= SUB_OP;
 465       i->dst = ((insn & _DECODE_0TO6_HIGHBYTE) >> 8);
 466       i->flag |= DST;
 467       i->bit_no = ((insn & _DECODE_4TO6_LOWBYTE) >> 4);
 468       i->flag |= BIT_NO;
 469       break;
 470
 471     case 5:
 472       i->sub_opcode = ((insn & _DECODE_4TO6_HIGHBYTE) >> 12);
 473       i->flag |= SUB_OP;
 474       i->src = ((insn & _DECODE_LOWBYTE));
 475       i->flag |= SRC;
 476       i->fbit = ((insn & _DECODE_GET_F_HIGHBYTE) >> 15);
 477       i->flag |= FORMAT;
 478       break;
 479
 480     case 6:
 481       i->sub_opcode = ((insn & _DECODE_HIGHNIB_HIGHBYTE) >> 12);
 482       i->flag |= SUB_OP;
 483       break;
 484
 485     case 7:
 486       i->sub_opcode = ((insn & _DECODE_HIGHNIB_HIGHBYTE) >> 12);
 487       i->flag |= SUB_OP;
 488       break;
 489
 490     case 8:
 491       i->dst = ((insn & _DECODE_0TO6_HIGHBYTE) >> 8);
 492       i->flag |= DST;
 493       i->src = ((insn & _DECODE_LOWBYTE));
 494       i->flag |= SRC;
 495       i->fbit = ((insn & _DECODE_GET_F_HIGHBYTE) >> 15);
 496       i->flag |= FORMAT;
 497       break;
 498
 499     case 9:
 500       i->sub_opcode = ((insn & _DECODE_0TO2_HIGHBYTE) >> 8);
 501       i->flag |= SUB_OP;
 502       i->bit_no = ((insn & _DECODE_4TO6_HIGHBYTE) >> 12);
 503       i->flag |= BIT_NO;
 504       i->fbit = ((insn & _DECODE_GET_F_HIGHBYTE) >> 15);
 505       i->flag |= FORMAT;
 506       i->src = ((insn & _DECODE_LOWBYTE));
 507       i->flag |= SRC;
 508       break;
 509
 510     case 10:
 511       i->sub_opcode = ((insn & _DECODE_4TO6_HIGHBYTE) >> 12);
 512       i->flag |= SUB_OP;
 513       i->src = ((insn & _DECODE_LOWBYTE));
 514       i->flag |= SRC;
 515       i->fbit = ((insn & _DECODE_GET_F_HIGHBYTE) >> 15);
 516       i->flag |= FORMAT;
 517       break;
 518
 519     case 11:
 520       i->dst = ((insn & _DECODE_0TO6_HIGHBYTE) >> 8);
 521       i->flag |= DST;
 522       break;
 523
 524     case 12:
 525       i->dst = ((insn & _DECODE_0TO6_HIGHBYTE) >> 8);
 526       i->flag |= DST;
 527       break;
 528
 529     case 13:
 530       i->sub_opcode = ((insn & _DECODE_4TO6_HIGHBYTE) >> 12);
 531       i->flag |= SUB_OP;
 532       i->src = ((insn & _DECODE_LOWBYTE));
 533       i->flag |= SRC;
 534       i->fbit = ((insn & _DECODE_GET_F_HIGHBYTE) >> 15);
 535       i->flag |= FORMAT;
 536       break;
 537
 538     }
 539   return;
 540 }
 541
 542
 543 /* Print one instruction from MEMADDR on INFO->STREAM. Return the size of the
 544    instruction (always 2 on MAXQ20).  */
 545
 546 static int
 547 print_insn (bfd_vma memaddr, struct disassemble_info *info,
 548             enum bfd_endian endianess)
 549 {
 550   /* The raw instruction.  */
 551   unsigned char insn[2], derived_code;
 552   unsigned int format;
 553   unsigned int actual_operands;
 554   unsigned int i;
 555   /* The group_info collected/decoded.  */
 556   group_info grp;
 557   MAXQ20_OPCODE_INFO const *opcode;
 558   int status;
 559
 560   format = 0;
 561
 562   status = info->read_memory_func (memaddr, (bfd_byte *) & insn[0], 2, info);
 563
 564   if (status != 0)
 565     {
 566       info->memory_error_func (status, memaddr, info);
 567       return -1;
 568     }
 569
 570   /* FIXME: Endianness always little.  */
 571   if (endianess == BFD_ENDIAN_BIG)
 572     get_insn_opcode (((insn[0] << 8) | (insn[1])), &grp);
 573   else
 574     get_insn_opcode (((insn[1] << 8) | (insn[0])), &grp);
 575
 576   derived_code = ((grp.group_no << 4) | grp.sub_opcode);
 577
 578   if (insn[0] == 0 && insn[1] == 0)
 579     {
 580       info->fprintf_func (info->stream, "00 00");
 581       return 2;
 582     }
 583
 584   /* The opcode is always in insn[0].  */
 585   for (opcode = &op_table[0]; opcode->name != NULL; ++opcode)
 586     {
 587       if (opcode->instr_id == derived_code)
 588         {
 589           if (opcode->instr_id == 0x3D)
 590             {
 591               if ((grp.bit_no == 0) && (opcode->arg[1] != A_BIT_0))
 592                 continue;
 593               if ((grp.bit_no == 1) && (opcode->arg[1] != A_BIT_1))
 594                 continue;
 595               if ((grp.bit_no == 3) && (opcode->arg[0] != 0))
 596                 continue;
 597             }
 598
 599           info->fprintf_func (info->stream, "%s ", opcode->name);
 600
 601           actual_operands = 0;
 602
 603           if ((grp.flag & SRC) == SRC)
 604             actual_operands++;
 605
 606           if ((grp.flag & DST) == DST)
 607             actual_operands++;
 608
 609           /* If Implict FLAG in the Instruction.  */
 610           if ((opcode->op_number > actual_operands)
 611               && !((grp.flag & SRC) == SRC) && !((grp.flag & DST) == DST))
 612             {
 613               for (i = 0; i < opcode->op_number; i++)
 614                 {
 615                   if (i == 1 && (opcode->arg[1] != NO_ARG))
 616                     info->fprintf_func (info->stream, ",");
 617                   maxq_print_arg (opcode->arg[i], info, grp);
 618                 }
 619             }
 620
 621           /* DST is ABSENT in the grp.  */
 622           if ((opcode->op_number > actual_operands)
 623               && ((grp.flag & SRC) == SRC))
 624             {
 625               maxq_print_arg (opcode->arg[0], info, grp);
 626               info->fprintf_func (info->stream, " ");
 627
 628               if (opcode->instr_id == 0xA4)
 629                 info->fprintf_func (info->stream, "LC[0]");
 630
 631               if (opcode->instr_id == 0xA5)
 632                 info->fprintf_func (info->stream, "LC[1]");
 633
 634               if ((grp.flag & SRC) == SRC)
 635                 info->fprintf_func (info->stream, ",");
 636             }
 637
 638           if ((grp.flag & DST) == DST)
 639             {
 640               if ((grp.flag & BIT_NO) == BIT_NO)
 641                 {
 642                   info->fprintf_func (info->stream, " %s.%d",
 643                                       get_reg_name (grp.dst,
 644                                                     (type1) 0 /*DST*/),
 645                                       grp.bit_no);
 646                 }
 647               else
 648                 info->fprintf_func (info->stream, " %s",
 649                                     get_reg_name (grp.dst, (type1) 0));
 650             }
 651
 652           /* SRC is ABSENT in the grp.  */
 653           if ((opcode->op_number > actual_operands)
 654               && ((grp.flag & DST) == DST))
 655             {
 656               info->fprintf_func (info->stream, ",");
 657               maxq_print_arg (opcode->arg[1], info, grp);
 658               info->fprintf_func (info->stream, " ");
 659             }
 660
 661           if ((grp.flag & SRC) == SRC)
 662             {
 663               if ((grp.flag & DST) == DST)
 664                 info->fprintf_func (info->stream, ",");
 665
 666               if ((grp.flag & BIT_NO) == BIT_NO)
 667                 {
 668                   format = opcode->format;
 669
 670                   if ((grp.flag & FORMAT) == FORMAT)
 671                     format = grp.fbit;
 672                   if (format == 1)
 673                     info->fprintf_func (info->stream, " %s.%d",
 674                                         get_reg_name (grp.src,
 675                                                       (type1) 1 /*SRC*/),
 676                                         grp.bit_no);
 677                   if (format == 0)
 678                     info->fprintf_func (info->stream, " #%02xh.%d",
 679                                         grp.src, grp.bit_no);
 680                 }
 681               else
 682                 {
 683                   format = opcode->format;
 684
 685                   if ((grp.flag & FORMAT) == FORMAT)
 686                     format = grp.fbit;
 687                   if (format == 1)
 688                     info->fprintf_func (info->stream, " %s",
 689                                         get_reg_name (grp.src,
 690                                                       (type1) 1 /*SRC*/));
 691                   if (format == 0)
 692                     info->fprintf_func (info->stream, " #%02xh",
 693                                         (grp.src));
 694                 }
 695             }
 696
 697           return 2;
 698         }
 699     }
 700
 701   info->fprintf_func (info->stream, "Unable to Decode :  %02x %02x",
 702                       insn[0], insn[1]);
 703   return 2;
 704 }
 705
 706 int
 707 print_insn_maxq_little (bfd_vma memaddr, struct disassemble_info *info)
 708 {
 709   return print_insn (memaddr, info, BFD_ENDIAN_LITTLE);
 710 }