opcodes/tic30-dis.c

   1 /* Disassembly routines for TMS320C30 architecture
   2    Copyright (C) 1998-2019 Free Software Foundation, Inc.
   3    Contributed by Steven Haworth (steve@pm.cse.rmit.edu.au)
   4
   5    This file is part of the GNU opcodes library.
   6
   7    This library 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 3, or (at your option)
  10    any later version.
  11
  12    It is distributed in the hope that it will be useful, but WITHOUT
  13    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  14    or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
  15    License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this file; see the file COPYING.  If not, write to the
  19    Free Software Foundation, 51 Franklin Street - Fifth Floor, Boston,
  20    MA 02110-1301, USA.  */
  21
  22 #include "sysdep.h"
  23 #include <errno.h>
  24 #include <math.h>
  25 #include "disassemble.h"
  26 #include "opcode/tic30.h"
  27
  28 #define NORMAL_INSN   1
  29 #define PARALLEL_INSN 2
  30
  31 /* Gets the type of instruction based on the top 2 or 3 bits of the
  32    instruction word.  */
  33 #define GET_TYPE(insn) (insn & 0x80000000 ? insn & 0xC0000000 : insn & 0xE0000000)
  34
  35 /* Instruction types.  */
  36 #define TWO_OPERAND_1 0x00000000
  37 #define TWO_OPERAND_2 0x40000000
  38 #define THREE_OPERAND 0x20000000
  39 #define PAR_STORE     0xC0000000
  40 #define MUL_ADDS      0x80000000
  41 #define BRANCHES      0x60000000
  42
  43 /* Specific instruction id bits.  */
  44 #define NORMAL_IDEN    0x1F800000
  45 #define PAR_STORE_IDEN 0x3E000000
  46 #define MUL_ADD_IDEN   0x2C000000
  47 #define BR_IMM_IDEN    0x1F000000
  48 #define BR_COND_IDEN   0x1C3F0000
  49
  50 /* Addressing modes.  */
  51 #define AM_REGISTER 0x00000000
  52 #define AM_DIRECT   0x00200000
  53 #define AM_INDIRECT 0x00400000
  54 #define AM_IMM      0x00600000
  55
  56 #define P_FIELD 0x03000000
  57
  58 #define REG_AR0 0x08
  59 #define LDP_INSN 0x08700000
  60
  61 /* TMS320C30 program counter for current instruction.  */
  62 static unsigned int _pc;
  63
  64 struct instruction
  65 {
  66   int type;
  67   insn_template *tm;
  68   partemplate *ptm;
  69 };
  70
  71 static int
  72 get_tic30_instruction (unsigned long insn_word, struct instruction *insn)
  73 {
  74   switch (GET_TYPE (insn_word))
  75     {
  76     case TWO_OPERAND_1:
  77     case TWO_OPERAND_2:
  78     case THREE_OPERAND:
  79       insn->type = NORMAL_INSN;
  80       {
  81         insn_template *current_optab = (insn_template *) tic30_optab;
  82
  83         for (; current_optab < tic30_optab_end; current_optab++)
  84           {
  85             if (GET_TYPE (current_optab->base_opcode) == GET_TYPE (insn_word))
  86               {
  87                 if (current_optab->operands == 0)
  88                   {
  89                     if (current_optab->base_opcode == insn_word)
  90                       {
  91                         insn->tm = current_optab;
  92                         break;
  93                       }
  94                   }
  95                 else if ((current_optab->base_opcode & NORMAL_IDEN) == (insn_word & NORMAL_IDEN))
  96                   {
  97                     insn->tm = current_optab;
  98                     break;
  99                   }
 100               }
 101           }
 102       }
 103       break;
 104
 105     case PAR_STORE:
 106       insn->type = PARALLEL_INSN;
 107       {
 108         partemplate *current_optab = (partemplate *) tic30_paroptab;
 109
 110         for (; current_optab < tic30_paroptab_end; current_optab++)
 111           {
 112             if (GET_TYPE (current_optab->base_opcode) == GET_TYPE (insn_word))
 113               {
 114                 if ((current_optab->base_opcode & PAR_STORE_IDEN)
 115                     == (insn_word & PAR_STORE_IDEN))
 116                   {
 117                     insn->ptm = current_optab;
 118                     break;
 119                   }
 120               }
 121           }
 122       }
 123       break;
 124
 125     case MUL_ADDS:
 126       insn->type = PARALLEL_INSN;
 127       {
 128         partemplate *current_optab = (partemplate *) tic30_paroptab;
 129
 130         for (; current_optab < tic30_paroptab_end; current_optab++)
 131           {
 132             if (GET_TYPE (current_optab->base_opcode) == GET_TYPE (insn_word))
 133               {
 134                 if ((current_optab->base_opcode & MUL_ADD_IDEN)
 135                     == (insn_word & MUL_ADD_IDEN))
 136                   {
 137                     insn->ptm = current_optab;
 138                     break;
 139                   }
 140               }
 141           }
 142       }
 143       break;
 144
 145     case BRANCHES:
 146       insn->type = NORMAL_INSN;
 147       {
 148         insn_template *current_optab = (insn_template *) tic30_optab;
 149
 150         for (; current_optab < tic30_optab_end; current_optab++)
 151           {
 152             if (GET_TYPE (current_optab->base_opcode) == GET_TYPE (insn_word))
 153               {
 154                 if (current_optab->operand_types[0] & Imm24)
 155                   {
 156                     if ((current_optab->base_opcode & BR_IMM_IDEN)
 157                         == (insn_word & BR_IMM_IDEN))
 158                       {
 159                         insn->tm = current_optab;
 160                         break;
 161                       }
 162                   }
 163                 else if (current_optab->operands > 0)
 164                   {
 165                     if ((current_optab->base_opcode & BR_COND_IDEN)
 166                         == (insn_word & BR_COND_IDEN))
 167                       {
 168                         insn->tm = current_optab;
 169                         break;
 170                       }
 171                   }
 172                 else
 173                   {
 174                     if ((current_optab->base_opcode & (BR_COND_IDEN | 0x00800000))
 175                         == (insn_word & (BR_COND_IDEN | 0x00800000)))
 176                       {
 177                         insn->tm = current_optab;
 178                         break;
 179                       }
 180                   }
 181               }
 182           }
 183       }
 184       break;
 185     default:
 186       return 0;
 187     }
 188   return 1;
 189 }
 190
 191 #define OPERAND_BUFFER_LEN 15
 192
 193 static int
 194 get_register_operand (unsigned char fragment, char *buffer)
 195 {
 196   const reg *current_reg = tic30_regtab;
 197
 198   if (buffer == NULL)
 199     return 0;
 200   for (; current_reg < tic30_regtab_end; current_reg++)
 201     {
 202       if ((fragment & 0x1F) == current_reg->opcode)
 203         {
 204           strncpy (buffer, current_reg->name, OPERAND_BUFFER_LEN);
 205           buffer[OPERAND_BUFFER_LEN - 1] = 0;
 206           return 1;
 207         }
 208     }
 209   return 0;
 210 }
 211
 212 static int
 213 get_indirect_operand (unsigned short fragment,
 214                       int size,
 215                       char *buffer)
 216 {
 217   unsigned char mod;
 218   unsigned arnum;
 219   unsigned char disp;
 220
 221   if (buffer == NULL)
 222     return 0;
 223   /* Determine which bits identify the sections of the indirect
 224      operand based on the size in bytes.  */
 225   switch (size)
 226     {
 227     case 1:
 228       mod = (fragment & 0x00F8) >> 3;
 229       arnum = (fragment & 0x0007);
 230       disp = 0;
 231       break;
 232     case 2:
 233       mod = (fragment & 0xF800) >> 11;
 234       arnum = (fragment & 0x0700) >> 8;
 235       disp = (fragment & 0x00FF);
 236       break;
 237     default:
 238       return 0;
 239     }
 240   {
 241     const ind_addr_type *current_ind = tic30_indaddr_tab;
 242
 243     for (; current_ind < tic30_indaddrtab_end; current_ind++)
 244       {
 245         if (current_ind->modfield == mod)
 246           {
 247             if (current_ind->displacement == IMPLIED_DISP && size == 2)
 248               continue;
 249
 250             else
 251               {
 252                 size_t i, len;
 253                 int bufcnt;
 254
 255                 len = strlen (current_ind->syntax);
 256
 257                 for (i = 0, bufcnt = 0; i < len; i++, bufcnt++)
 258                   {
 259                     buffer[bufcnt] = current_ind->syntax[i];
 260
 261                     if (bufcnt > 0
 262                         && bufcnt < OPERAND_BUFFER_LEN - 1
 263                         && buffer[bufcnt - 1] == 'a'
 264                         && buffer[bufcnt] == 'r')
 265                       buffer[++bufcnt] = arnum + '0';
 266
 267                     if (bufcnt < OPERAND_BUFFER_LEN - 1
 268                         && buffer[bufcnt] == '('
 269                         && current_ind->displacement == DISP_REQUIRED)
 270                       {
 271                         snprintf (buffer + (bufcnt + 1),
 272                                  OPERAND_BUFFER_LEN - (bufcnt + 1),
 273                                  "%u", disp);
 274                         bufcnt += strlen (buffer + (bufcnt + 1));
 275                       }
 276                   }
 277                 buffer[bufcnt + 1] = '\0';
 278                 break;
 279               }
 280           }
 281       }
 282   }
 283   return 1;
 284 }
 285
 286 static int
 287 cnvt_tmsfloat_ieee (unsigned long tmsfloat, int size, float *ieeefloat)
 288 {
 289   unsigned long exponent, sign, mant;
 290   union
 291   {
 292     unsigned long l;
 293     float f;
 294   } val;
 295
 296   if (size == 2)
 297     {
 298       if ((tmsfloat & 0x0000F000) == 0x00008000)
 299         tmsfloat = 0x80000000;
 300       else
 301         {
 302           tmsfloat <<= 16;
 303           tmsfloat = (long) tmsfloat >> 4;
 304         }
 305     }
 306   exponent = tmsfloat & 0xFF000000;
 307   if (exponent == 0x80000000)
 308     {
 309       *ieeefloat = 0.0;
 310       return 1;
 311     }
 312   exponent += 0x7F000000;
 313   sign = (tmsfloat & 0x00800000) << 8;
 314   mant = tmsfloat & 0x007FFFFF;
 315   if (exponent == 0xFF000000)
 316     {
 317       if (mant == 0)
 318         *ieeefloat = ERANGE;
 319 #ifdef HUGE_VALF
 320       if (sign == 0)
 321         *ieeefloat = HUGE_VALF;
 322       else
 323         *ieeefloat = -HUGE_VALF;
 324 #else
 325       if (sign == 0)
 326         *ieeefloat = 1.0 / 0.0;
 327       else
 328         *ieeefloat = -1.0 / 0.0;
 329 #endif
 330       return 1;
 331     }
 332   exponent >>= 1;
 333   if (sign)
 334     {
 335       mant = (~mant) & 0x007FFFFF;
 336       mant += 1;
 337       exponent += mant & 0x00800000;
 338       exponent &= 0x7F800000;
 339       mant &= 0x007FFFFF;
 340     }
 341   if (tmsfloat == 0x80000000)
 342     sign = mant = exponent = 0;
 343   tmsfloat = sign | exponent | mant;
 344   val.l = tmsfloat;
 345   *ieeefloat = val.f;
 346   return 1;
 347 }
 348
 349 static int
 350 print_two_operand (disassemble_info *info,
 351                    unsigned long insn_word,
 352                    struct instruction *insn)
 353 {
 354   char name[12];
 355   char operand[2][OPERAND_BUFFER_LEN] =
 356   {
 357     {0},
 358     {0}
 359   };
 360   float f_number;
 361
 362   if (insn->tm == NULL)
 363     return 0;
 364   strcpy (name, insn->tm->name);
 365   if (insn->tm->opcode_modifier == AddressMode)
 366     {
 367       int src_op, dest_op;
 368       /* Determine whether instruction is a store or a normal instruction.  */
 369       if ((insn->tm->operand_types[1] & (Direct | Indirect))
 370           == (Direct | Indirect))
 371         {
 372           src_op = 1;
 373           dest_op = 0;
 374         }
 375       else
 376         {
 377           src_op = 0;
 378           dest_op = 1;
 379         }
 380       /* Get the destination register.  */
 381       if (insn->tm->operands == 2)
 382         get_register_operand ((insn_word & 0x001F0000) >> 16, operand[dest_op]);
 383       /* Get the source operand based on addressing mode.  */
 384       switch (insn_word & AddressMode)
 385         {
 386         case AM_REGISTER:
 387           /* Check for the NOP instruction before getting the operand.  */
 388           if ((insn->tm->operand_types[0] & NotReq) == 0)
 389             get_register_operand ((insn_word & 0x0000001F), operand[src_op]);
 390           break;
 391         case AM_DIRECT:
 392           sprintf (operand[src_op], "@0x%lX", (insn_word & 0x0000FFFF));
 393           break;
 394         case AM_INDIRECT:
 395           get_indirect_operand ((insn_word & 0x0000FFFF), 2, operand[src_op]);
 396           break;
 397         case AM_IMM:
 398           /* Get the value of the immediate operand based on variable type.  */
 399           switch (insn->tm->imm_arg_type)
 400             {
 401             case Imm_Float:
 402               cnvt_tmsfloat_ieee ((insn_word & 0x0000FFFF), 2, &f_number);
 403               sprintf (operand[src_op], "%2.2f", f_number);
 404               break;
 405             case Imm_SInt:
 406               sprintf (operand[src_op], "%d", (short) (insn_word & 0x0000FFFF));
 407               break;
 408             case Imm_UInt:
 409               sprintf (operand[src_op], "%lu", (insn_word & 0x0000FFFF));
 410               break;
 411             default:
 412               return 0;
 413             }
 414           /* Handle special case for LDP instruction.  */
 415           if ((insn_word & 0xFFFFFF00) == LDP_INSN)
 416             {
 417               strcpy (name, "ldp");
 418               sprintf (operand[0], "0x%06lX", (insn_word & 0x000000FF) << 16);
 419               operand[1][0] = '\0';
 420             }
 421         }
 422     }
 423   /* Handle case for stack and rotate instructions.  */
 424   else if (insn->tm->operands == 1)
 425     {
 426       if (insn->tm->opcode_modifier == StackOp)
 427         get_register_operand ((insn_word & 0x001F0000) >> 16, operand[0]);
 428     }
 429   /* Output instruction to stream.  */
 430   info->fprintf_func (info->stream, "   %s %s%c%s", name,
 431                       operand[0][0] ? operand[0] : "",
 432                       operand[1][0] ? ',' : ' ',
 433                       operand[1][0] ? operand[1] : "");
 434   return 1;
 435 }
 436
 437 static int
 438 print_three_operand (disassemble_info *info,
 439                      unsigned long insn_word,
 440                      struct instruction *insn)
 441 {
 442   char operand[3][OPERAND_BUFFER_LEN] =
 443   {
 444     {0},
 445     {0},
 446     {0}
 447   };
 448
 449   if (insn->tm == NULL)
 450     return 0;
 451   switch (insn_word & AddressMode)
 452     {
 453     case AM_REGISTER:
 454       get_register_operand ((insn_word & 0x000000FF), operand[0]);
 455       get_register_operand ((insn_word & 0x0000FF00) >> 8, operand[1]);
 456       break;
 457     case AM_DIRECT:
 458       get_register_operand ((insn_word & 0x000000FF), operand[0]);
 459       get_indirect_operand ((insn_word & 0x0000FF00) >> 8, 1, operand[1]);
 460       break;
 461     case AM_INDIRECT:
 462       get_indirect_operand ((insn_word & 0x000000FF), 1, operand[0]);
 463       get_register_operand ((insn_word & 0x0000FF00) >> 8, operand[1]);
 464       break;
 465     case AM_IMM:
 466       get_indirect_operand ((insn_word & 0x000000FF), 1, operand[0]);
 467       get_indirect_operand ((insn_word & 0x0000FF00) >> 8, 1, operand[1]);
 468       break;
 469     default:
 470       return 0;
 471     }
 472   if (insn->tm->operands == 3)
 473     get_register_operand ((insn_word & 0x001F0000) >> 16, operand[2]);
 474   info->fprintf_func (info->stream, "   %s %s,%s%c%s", insn->tm->name,
 475                       operand[0], operand[1],
 476                       operand[2][0] ? ',' : ' ',
 477                       operand[2][0] ? operand[2] : "");
 478   return 1;
 479 }
 480
 481 static int
 482 print_par_insn (disassemble_info *info,
 483                 unsigned long insn_word,
 484                 struct instruction *insn)
 485 {
 486   size_t i, len;
 487   char *name1, *name2;
 488   char operand[2][3][OPERAND_BUFFER_LEN] =
 489   {
 490     {
 491       {0},
 492       {0},
 493       {0}
 494     },
 495     {
 496       {0},
 497       {0},
 498       {0}
 499     }
 500   };
 501
 502   if (insn->ptm == NULL)
 503     return 0;
 504   /* Parse out the names of each of the parallel instructions from the
 505      q_insn1_insn2 format.  */
 506   name1 = (char *) strdup (insn->ptm->name + 2);
 507   name2 = "";
 508   len = strlen (name1);
 509   for (i = 0; i < len; i++)
 510     {
 511       if (name1[i] == '_')
 512         {
 513           name2 = &name1[i + 1];
 514           name1[i] = '\0';
 515           break;
 516         }
 517     }
 518   /* Get the operands of the instruction based on the operand order.  */
 519   switch (insn->ptm->oporder)
 520     {
 521     case OO_4op1:
 522       get_indirect_operand ((insn_word & 0x000000FF), 1, operand[0][0]);
 523       get_indirect_operand ((insn_word & 0x0000FF00) >> 8, 1, operand[1][1]);
 524       get_register_operand ((insn_word >> 16) & 0x07, operand[1][0]);
 525       get_register_operand ((insn_word >> 22) & 0x07, operand[0][1]);
 526       break;
 527     case OO_4op2:
 528       get_indirect_operand ((insn_word & 0x000000FF), 1, operand[0][0]);
 529       get_indirect_operand ((insn_word & 0x0000FF00) >> 8, 1, operand[1][0]);
 530       get_register_operand ((insn_word >> 19) & 0x07, operand[1][1]);
 531       get_register_operand ((insn_word >> 22) & 0x07, operand[0][1]);
 532       break;
 533     case OO_4op3:
 534       get_indirect_operand ((insn_word & 0x000000FF), 1, operand[0][1]);
 535       get_indirect_operand ((insn_word & 0x0000FF00) >> 8, 1, operand[1][1]);
 536       get_register_operand ((insn_word >> 16) & 0x07, operand[1][0]);
 537       get_register_operand ((insn_word >> 22) & 0x07, operand[0][0]);
 538       break;
 539     case OO_5op1:
 540       get_indirect_operand ((insn_word & 0x000000FF), 1, operand[0][0]);
 541       get_indirect_operand ((insn_word & 0x0000FF00) >> 8, 1, operand[1][1]);
 542       get_register_operand ((insn_word >> 16) & 0x07, operand[1][0]);
 543       get_register_operand ((insn_word >> 19) & 0x07, operand[0][1]);
 544       get_register_operand ((insn_word >> 22) & 0x07, operand[0][2]);
 545       break;
 546     case OO_5op2:
 547       get_indirect_operand ((insn_word & 0x000000FF), 1, operand[0][1]);
 548       get_indirect_operand ((insn_word & 0x0000FF00) >> 8, 1, operand[1][1]);
 549       get_register_operand ((insn_word >> 16) & 0x07, operand[1][0]);
 550       get_register_operand ((insn_word >> 19) & 0x07, operand[0][0]);
 551       get_register_operand ((insn_word >> 22) & 0x07, operand[0][2]);
 552       break;
 553     case OO_PField:
 554       if (insn_word & 0x00800000)
 555         get_register_operand (0x01, operand[0][2]);
 556       else
 557         get_register_operand (0x00, operand[0][2]);
 558       if (insn_word & 0x00400000)
 559         get_register_operand (0x03, operand[1][2]);
 560       else
 561         get_register_operand (0x02, operand[1][2]);
 562       switch (insn_word & P_FIELD)
 563         {
 564         case 0x00000000:
 565           get_indirect_operand ((insn_word & 0x000000FF), 1, operand[0][1]);
 566           get_indirect_operand ((insn_word & 0x0000FF00) >> 8, 1, operand[0][0]);
 567           get_register_operand ((insn_word >> 16) & 0x07, operand[1][1]);
 568           get_register_operand ((insn_word >> 19) & 0x07, operand[1][0]);
 569           break;
 570         case 0x01000000:
 571           get_indirect_operand ((insn_word & 0x000000FF), 1, operand[1][0]);
 572           get_indirect_operand ((insn_word & 0x0000FF00) >> 8, 1, operand[0][0]);
 573           get_register_operand ((insn_word >> 16) & 0x07, operand[1][1]);
 574           get_register_operand ((insn_word >> 19) & 0x07, operand[0][1]);
 575           break;
 576         case 0x02000000:
 577           get_indirect_operand ((insn_word & 0x000000FF), 1, operand[1][1]);
 578           get_indirect_operand ((insn_word & 0x0000FF00) >> 8, 1, operand[1][0]);
 579           get_register_operand ((insn_word >> 16) & 0x07, operand[0][1]);
 580           get_register_operand ((insn_word >> 19) & 0x07, operand[0][0]);
 581           break;
 582         case 0x03000000:
 583           get_indirect_operand ((insn_word & 0x000000FF), 1, operand[1][1]);
 584           get_indirect_operand ((insn_word & 0x0000FF00) >> 8, 1, operand[0][0]);
 585           get_register_operand ((insn_word >> 16) & 0x07, operand[1][0]);
 586           get_register_operand ((insn_word >> 19) & 0x07, operand[0][1]);
 587           break;
 588         }
 589       break;
 590     default:
 591       return 0;
 592     }
 593   info->fprintf_func (info->stream, "   %s %s,%s%c%s", name1,
 594                       operand[0][0], operand[0][1],
 595                       operand[0][2][0] ? ',' : ' ',
 596                       operand[0][2][0] ? operand[0][2] : "");
 597   info->fprintf_func (info->stream, "\n\t\t\t|| %s %s,%s%c%s", name2,
 598                       operand[1][0], operand[1][1],
 599                       operand[1][2][0] ? ',' : ' ',
 600                       operand[1][2][0] ? operand[1][2] : "");
 601   free (name1);
 602   return 1;
 603 }
 604
 605 static int
 606 print_branch (disassemble_info *info,
 607               unsigned long insn_word,
 608               struct instruction *insn)
 609 {
 610   char operand[2][OPERAND_BUFFER_LEN] =
 611   {
 612     {0},
 613     {0}
 614   };
 615   unsigned long address;
 616   int print_label = 0;
 617
 618   if (insn->tm == NULL)
 619     return 0;
 620   /* Get the operands for 24-bit immediate jumps.  */
 621   if (insn->tm->operand_types[0] & Imm24)
 622     {
 623       address = insn_word & 0x00FFFFFF;
 624       sprintf (operand[0], "0x%lX", address);
 625       print_label = 1;
 626     }
 627   /* Get the operand for the trap instruction.  */
 628   else if (insn->tm->operand_types[0] & IVector)
 629     {
 630       address = insn_word & 0x0000001F;
 631       sprintf (operand[0], "0x%lX", address);
 632     }
 633   else
 634     {
 635       address = insn_word & 0x0000FFFF;
 636       /* Get the operands for the DB instructions.  */
 637       if (insn->tm->operands == 2)
 638         {
 639           get_register_operand (((insn_word & 0x01C00000) >> 22) + REG_AR0, operand[0]);
 640           if (insn_word & PCRel)
 641             {
 642               sprintf (operand[1], "%d", (short) address);
 643               print_label = 1;
 644             }
 645           else
 646             get_register_operand (insn_word & 0x0000001F, operand[1]);
 647         }
 648       /* Get the operands for the standard branches.  */
 649       else if (insn->tm->operands == 1)
 650         {
 651           if (insn_word & PCRel)
 652             {
 653               address = (short) address;
 654               sprintf (operand[0], "%ld", address);
 655               print_label = 1;
 656             }
 657           else
 658             get_register_operand (insn_word & 0x0000001F, operand[0]);
 659         }
 660     }
 661   info->fprintf_func (info->stream, "   %s %s%c%s", insn->tm->name,
 662                       operand[0][0] ? operand[0] : "",
 663                       operand[1][0] ? ',' : ' ',
 664                       operand[1][0] ? operand[1] : "");
 665   /* Print destination of branch in relation to current symbol.  */
 666   if (print_label && info->symbols)
 667     {
 668       asymbol *sym = *info->symbols;
 669
 670       if ((insn->tm->opcode_modifier == PCRel) && (insn_word & PCRel))
 671         {
 672           address = (_pc + 1 + (short) address) - ((sym->section->vma + sym->value) / 4);
 673           /* Check for delayed instruction, if so adjust destination.  */
 674           if (insn_word & 0x00200000)
 675             address += 2;
 676         }
 677       else
 678         {
 679           address -= ((sym->section->vma + sym->value) / 4);
 680         }
 681       if (address == 0)
 682         info->fprintf_func (info->stream, " <%s>", sym->name);
 683       else
 684         info->fprintf_func (info->stream, " <%s %c %lu>", sym->name,
 685                             ((short) address < 0) ? '-' : '+',
 686                             address);
 687     }
 688   return 1;
 689 }
 690
 691 int
 692 print_insn_tic30 (bfd_vma pc, disassemble_info *info)
 693 {
 694   unsigned long insn_word;
 695   struct instruction insn = { 0, NULL, NULL };
 696   bfd_vma bufaddr = pc - info->buffer_vma;
 697
 698   /* Obtain the current instruction word from the buffer.  */
 699   insn_word = (*(info->buffer + bufaddr) << 24) | (*(info->buffer + bufaddr + 1) << 16) |
 700     (*(info->buffer + bufaddr + 2) << 8) | *(info->buffer + bufaddr + 3);
 701   _pc = pc / 4;
 702   /* Get the instruction refered to by the current instruction word
 703      and print it out based on its type.  */
 704   if (!get_tic30_instruction (insn_word, &insn))
 705     return -1;
 706   switch (GET_TYPE (insn_word))
 707     {
 708     case TWO_OPERAND_1:
 709     case TWO_OPERAND_2:
 710       if (!print_two_operand (info, insn_word, &insn))
 711         return -1;
 712       break;
 713     case THREE_OPERAND:
 714       if (!print_three_operand (info, insn_word, &insn))
 715         return -1;
 716       break;
 717     case PAR_STORE:
 718     case MUL_ADDS:
 719       if (!print_par_insn (info, insn_word, &insn))
 720         return -1;
 721       break;
 722     case BRANCHES:
 723       if (!print_branch (info, insn_word, &insn))
 724         return -1;
 725       break;
 726     }
 727   return 4;
 728 }