opcodes/disassemble.c

   1 /* Select disassembly routine for specified architecture.
   2    Copyright (C) 1994-2018 Free Software Foundation, Inc.
   3
   4    This file is part of the GNU opcodes library.
   5
   6    This library is free software; you can redistribute it and/or modify
   7    it under the terms of the GNU General Public License as published by
   8    the Free Software Foundation; either version 3 of the License, or
   9    (at your option) any later version.
  10
  11    This program is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14    GNU General Public License for more details.
  15
  16    You should have received a copy of the GNU General Public License
  17    along with this program; if not, write to the Free Software
  18    Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
  19    MA 02110-1301, USA.  */
  20
  21 #include "sysdep.h"
  22 #include "disassemble.h"
  23 #include "safe-ctype.h"
  24 #include <assert.h>
  25
  26 #ifdef ARCH_all
  27 #define ARCH_aarch64
  28 #define ARCH_alpha
  29 #define ARCH_arc
  30 #define ARCH_arm
  31 #define ARCH_avr
  32 #define ARCH_bfin
  33 #define ARCH_cr16
  34 #define ARCH_cris
  35 #define ARCH_crx
  36 #define ARCH_d10v
  37 #define ARCH_d30v
  38 #define ARCH_dlx
  39 #define ARCH_epiphany
  40 #define ARCH_fr30
  41 #define ARCH_frv
  42 #define ARCH_ft32
  43 #define ARCH_h8300
  44 #define ARCH_h8500
  45 #define ARCH_hppa
  46 #define ARCH_i370
  47 #define ARCH_i386
  48 #define ARCH_i860
  49 #define ARCH_i960
  50 #define ARCH_ia64
  51 #define ARCH_ip2k
  52 #define ARCH_iq2000
  53 #define ARCH_lm32
  54 #define ARCH_m32c
  55 #define ARCH_m32r
  56 #define ARCH_m68hc11
  57 #define ARCH_m68hc12
  58 #define ARCH_m68k
  59 #define ARCH_m88k
  60 #define ARCH_mcore
  61 #define ARCH_mep
  62 #define ARCH_metag
  63 #define ARCH_microblaze
  64 #define ARCH_mips
  65 #define ARCH_mmix
  66 #define ARCH_mn10200
  67 #define ARCH_mn10300
  68 #define ARCH_moxie
  69 #define ARCH_mt
  70 #define ARCH_msp430
  71 #define ARCH_nds32
  72 #define ARCH_nios2
  73 #define ARCH_ns32k
  74 #define ARCH_or1k
  75 #define ARCH_pdp11
  76 #define ARCH_pj
  77 #define ARCH_powerpc
  78 #define ARCH_pru
  79 #define ARCH_riscv
  80 #define ARCH_rs6000
  81 #define ARCH_rl78
  82 #define ARCH_rx
  83 #define ARCH_s390
  84 #define ARCH_score
  85 #define ARCH_sh
  86 #define ARCH_sparc
  87 #define ARCH_spu
  88 #define ARCH_tic30
  89 #define ARCH_tic4x
  90 #define ARCH_tic54x
  91 #define ARCH_tic6x
  92 #define ARCH_tic80
  93 #define ARCH_tilegx
  94 #define ARCH_tilepro
  95 #define ARCH_v850
  96 #define ARCH_vax
  97 #define ARCH_visium
  98 #define ARCH_w65
  99 #define ARCH_wasm32
 100 #define ARCH_xstormy16
 101 #define ARCH_xc16x
 102 #define ARCH_xgate
 103 #define ARCH_xtensa
 104 #define ARCH_z80
 105 #define ARCH_z8k
 106 #define INCLUDE_SHMEDIA
 107 #endif
 108
 109 #ifdef ARCH_m32c
 110 #include "m32c-desc.h"
 111 #endif
 112
 113 disassembler_ftype
 114 disassembler (enum bfd_architecture a,
 115               bfd_boolean big ATTRIBUTE_UNUSED,
 116               unsigned long mach ATTRIBUTE_UNUSED,
 117               bfd *abfd ATTRIBUTE_UNUSED)
 118 {
 119   disassembler_ftype disassemble;
 120
 121   switch (a)
 122     {
 123       /* If you add a case to this table, also add it to the
 124          ARCH_all definition right above this function.  */
 125 #ifdef ARCH_aarch64
 126     case bfd_arch_aarch64:
 127       disassemble = print_insn_aarch64;
 128       break;
 129 #endif
 130 #ifdef ARCH_alpha
 131     case bfd_arch_alpha:
 132       disassemble = print_insn_alpha;
 133       break;
 134 #endif
 135 #ifdef ARCH_arc
 136     case bfd_arch_arc:
 137       disassemble = arc_get_disassembler (abfd);
 138       break;
 139 #endif
 140 #ifdef ARCH_arm
 141     case bfd_arch_arm:
 142       if (big)
 143         disassemble = print_insn_big_arm;
 144       else
 145         disassemble = print_insn_little_arm;
 146       break;
 147 #endif
 148 #ifdef ARCH_avr
 149     case bfd_arch_avr:
 150       disassemble = print_insn_avr;
 151       break;
 152 #endif
 153 #ifdef ARCH_bfin
 154     case bfd_arch_bfin:
 155       disassemble = print_insn_bfin;
 156       break;
 157 #endif
 158 #ifdef ARCH_cr16
 159     case bfd_arch_cr16:
 160       disassemble = print_insn_cr16;
 161       break;
 162 #endif
 163 #ifdef ARCH_cris
 164     case bfd_arch_cris:
 165       disassemble = cris_get_disassembler (abfd);
 166       break;
 167 #endif
 168 #ifdef ARCH_crx
 169     case bfd_arch_crx:
 170       disassemble = print_insn_crx;
 171       break;
 172 #endif
 173 #ifdef ARCH_d10v
 174     case bfd_arch_d10v:
 175       disassemble = print_insn_d10v;
 176       break;
 177 #endif
 178 #ifdef ARCH_d30v
 179     case bfd_arch_d30v:
 180       disassemble = print_insn_d30v;
 181       break;
 182 #endif
 183 #ifdef ARCH_dlx
 184     case bfd_arch_dlx:
 185       /* As far as I know we only handle big-endian DLX objects.  */
 186       disassemble = print_insn_dlx;
 187       break;
 188 #endif
 189 #ifdef ARCH_h8300
 190     case bfd_arch_h8300:
 191       if (mach == bfd_mach_h8300h || mach == bfd_mach_h8300hn)
 192         disassemble = print_insn_h8300h;
 193       else if (mach == bfd_mach_h8300s
 194                || mach == bfd_mach_h8300sn
 195                || mach == bfd_mach_h8300sx
 196                || mach == bfd_mach_h8300sxn)
 197         disassemble = print_insn_h8300s;
 198       else
 199         disassemble = print_insn_h8300;
 200       break;
 201 #endif
 202 #ifdef ARCH_h8500
 203     case bfd_arch_h8500:
 204       disassemble = print_insn_h8500;
 205       break;
 206 #endif
 207 #ifdef ARCH_hppa
 208     case bfd_arch_hppa:
 209       disassemble = print_insn_hppa;
 210       break;
 211 #endif
 212 #ifdef ARCH_i370
 213     case bfd_arch_i370:
 214       disassemble = print_insn_i370;
 215       break;
 216 #endif
 217 #ifdef ARCH_i386
 218     case bfd_arch_i386:
 219     case bfd_arch_iamcu:
 220     case bfd_arch_l1om:
 221     case bfd_arch_k1om:
 222       disassemble = print_insn_i386;
 223       break;
 224 #endif
 225 #ifdef ARCH_i860
 226     case bfd_arch_i860:
 227       disassemble = print_insn_i860;
 228       break;
 229 #endif
 230 #ifdef ARCH_i960
 231     case bfd_arch_i960:
 232       disassemble = print_insn_i960;
 233       break;
 234 #endif
 235 #ifdef ARCH_ia64
 236     case bfd_arch_ia64:
 237       disassemble = print_insn_ia64;
 238       break;
 239 #endif
 240 #ifdef ARCH_ip2k
 241     case bfd_arch_ip2k:
 242       disassemble = print_insn_ip2k;
 243       break;
 244 #endif
 245 #ifdef ARCH_epiphany
 246     case bfd_arch_epiphany:
 247       disassemble = print_insn_epiphany;
 248       break;
 249 #endif
 250 #ifdef ARCH_fr30
 251     case bfd_arch_fr30:
 252       disassemble = print_insn_fr30;
 253       break;
 254 #endif
 255 #ifdef ARCH_lm32
 256     case bfd_arch_lm32:
 257       disassemble = print_insn_lm32;
 258       break;
 259 #endif
 260 #ifdef ARCH_m32r
 261     case bfd_arch_m32r:
 262       disassemble = print_insn_m32r;
 263       break;
 264 #endif
 265 #if defined(ARCH_m68hc11) || defined(ARCH_m68hc12) \
 266     || defined(ARCH_9s12x) || defined(ARCH_m9s12xg)
 267     case bfd_arch_m68hc11:
 268       disassemble = print_insn_m68hc11;
 269       break;
 270     case bfd_arch_m68hc12:
 271       disassemble = print_insn_m68hc12;
 272       break;
 273     case bfd_arch_m9s12x:
 274       disassemble = print_insn_m9s12x;
 275       break;
 276     case bfd_arch_m9s12xg:
 277       disassemble = print_insn_m9s12xg;
 278       break;
 279 #endif
 280 #ifdef ARCH_m68k
 281     case bfd_arch_m68k:
 282       disassemble = print_insn_m68k;
 283       break;
 284 #endif
 285 #ifdef ARCH_m88k
 286     case bfd_arch_m88k:
 287       disassemble = print_insn_m88k;
 288       break;
 289 #endif
 290 #ifdef ARCH_mt
 291     case bfd_arch_mt:
 292       disassemble = print_insn_mt;
 293       break;
 294 #endif
 295 #ifdef ARCH_microblaze
 296     case bfd_arch_microblaze:
 297       disassemble = print_insn_microblaze;
 298       break;
 299 #endif
 300 #ifdef ARCH_msp430
 301     case bfd_arch_msp430:
 302       disassemble = print_insn_msp430;
 303       break;
 304 #endif
 305 #ifdef ARCH_nds32
 306     case bfd_arch_nds32:
 307       disassemble = print_insn_nds32;
 308       break;
 309 #endif
 310 #ifdef ARCH_ns32k
 311     case bfd_arch_ns32k:
 312       disassemble = print_insn_ns32k;
 313       break;
 314 #endif
 315 #ifdef ARCH_mcore
 316     case bfd_arch_mcore:
 317       disassemble = print_insn_mcore;
 318       break;
 319 #endif
 320 #ifdef ARCH_mep
 321     case bfd_arch_mep:
 322       disassemble = print_insn_mep;
 323       break;
 324 #endif
 325 #ifdef ARCH_metag
 326     case bfd_arch_metag:
 327       disassemble = print_insn_metag;
 328       break;
 329 #endif
 330 #ifdef ARCH_mips
 331     case bfd_arch_mips:
 332       if (big)
 333         disassemble = print_insn_big_mips;
 334       else
 335         disassemble = print_insn_little_mips;
 336       break;
 337 #endif
 338 #ifdef ARCH_mmix
 339     case bfd_arch_mmix:
 340       disassemble = print_insn_mmix;
 341       break;
 342 #endif
 343 #ifdef ARCH_mn10200
 344     case bfd_arch_mn10200:
 345       disassemble = print_insn_mn10200;
 346       break;
 347 #endif
 348 #ifdef ARCH_mn10300
 349     case bfd_arch_mn10300:
 350       disassemble = print_insn_mn10300;
 351       break;
 352 #endif
 353 #ifdef ARCH_nios2
 354     case bfd_arch_nios2:
 355       if (big)
 356         disassemble = print_insn_big_nios2;
 357       else
 358         disassemble = print_insn_little_nios2;
 359       break;
 360 #endif
 361 #ifdef ARCH_or1k
 362     case bfd_arch_or1k:
 363       disassemble = print_insn_or1k;
 364       break;
 365 #endif
 366 #ifdef ARCH_pdp11
 367     case bfd_arch_pdp11:
 368       disassemble = print_insn_pdp11;
 369       break;
 370 #endif
 371 #ifdef ARCH_pj
 372     case bfd_arch_pj:
 373       disassemble = print_insn_pj;
 374       break;
 375 #endif
 376 #ifdef ARCH_powerpc
 377     case bfd_arch_powerpc:
 378 #endif
 379 #ifdef ARCH_rs6000
 380     case bfd_arch_rs6000:
 381 #endif
 382 #if defined ARCH_powerpc || defined ARCH_rs6000
 383       if (big)
 384         disassemble = print_insn_big_powerpc;
 385       else
 386         disassemble = print_insn_little_powerpc;
 387       break;
 388 #endif
 389 #ifdef ARCH_pru
 390     case bfd_arch_pru:
 391       disassemble = print_insn_pru;
 392       break;
 393 #endif
 394 #ifdef ARCH_riscv
 395     case bfd_arch_riscv:
 396       disassemble = print_insn_riscv;
 397       break;
 398 #endif
 399 #ifdef ARCH_rl78
 400     case bfd_arch_rl78:
 401       disassemble = rl78_get_disassembler (abfd);
 402       break;
 403 #endif
 404 #ifdef ARCH_rx
 405     case bfd_arch_rx:
 406       disassemble = print_insn_rx;
 407       break;
 408 #endif
 409 #ifdef ARCH_s390
 410     case bfd_arch_s390:
 411       disassemble = print_insn_s390;
 412       break;
 413 #endif
 414 #ifdef ARCH_score
 415     case bfd_arch_score:
 416       if (big)
 417         disassemble = print_insn_big_score;
 418       else
 419         disassemble = print_insn_little_score;
 420      break;
 421 #endif
 422 #ifdef ARCH_sh
 423     case bfd_arch_sh:
 424       disassemble = print_insn_sh;
 425       break;
 426 #endif
 427 #ifdef ARCH_sparc
 428     case bfd_arch_sparc:
 429       disassemble = print_insn_sparc;
 430       break;
 431 #endif
 432 #ifdef ARCH_spu
 433     case bfd_arch_spu:
 434       disassemble = print_insn_spu;
 435       break;
 436 #endif
 437 #ifdef ARCH_tic30
 438     case bfd_arch_tic30:
 439       disassemble = print_insn_tic30;
 440       break;
 441 #endif
 442 #ifdef ARCH_tic4x
 443     case bfd_arch_tic4x:
 444       disassemble = print_insn_tic4x;
 445       break;
 446 #endif
 447 #ifdef ARCH_tic54x
 448     case bfd_arch_tic54x:
 449       disassemble = print_insn_tic54x;
 450       break;
 451 #endif
 452 #ifdef ARCH_tic6x
 453     case bfd_arch_tic6x:
 454       disassemble = print_insn_tic6x;
 455       break;
 456 #endif
 457 #ifdef ARCH_tic80
 458     case bfd_arch_tic80:
 459       disassemble = print_insn_tic80;
 460       break;
 461 #endif
 462 #ifdef ARCH_ft32
 463     case bfd_arch_ft32:
 464       disassemble = print_insn_ft32;
 465       break;
 466 #endif
 467 #ifdef ARCH_v850
 468     case bfd_arch_v850:
 469     case bfd_arch_v850_rh850:
 470       disassemble = print_insn_v850;
 471       break;
 472 #endif
 473 #ifdef ARCH_w65
 474     case bfd_arch_w65:
 475       disassemble = print_insn_w65;
 476       break;
 477 #endif
 478 #ifdef ARCH_wasm32
 479     case bfd_arch_wasm32:
 480       disassemble = print_insn_wasm32;
 481       break;
 482 #endif
 483 #ifdef ARCH_xgate
 484     case bfd_arch_xgate:
 485       disassemble = print_insn_xgate;
 486       break;
 487 #endif
 488 #ifdef ARCH_xstormy16
 489     case bfd_arch_xstormy16:
 490       disassemble = print_insn_xstormy16;
 491       break;
 492 #endif
 493 #ifdef ARCH_xc16x
 494     case bfd_arch_xc16x:
 495       disassemble = print_insn_xc16x;
 496       break;
 497 #endif
 498 #ifdef ARCH_xtensa
 499     case bfd_arch_xtensa:
 500       disassemble = print_insn_xtensa;
 501       break;
 502 #endif
 503 #ifdef ARCH_z80
 504     case bfd_arch_z80:
 505       disassemble = print_insn_z80;
 506       break;
 507 #endif
 508 #ifdef ARCH_z8k
 509     case bfd_arch_z8k:
 510       if (mach == bfd_mach_z8001)
 511         disassemble = print_insn_z8001;
 512       else
 513         disassemble = print_insn_z8002;
 514       break;
 515 #endif
 516 #ifdef ARCH_vax
 517     case bfd_arch_vax:
 518       disassemble = print_insn_vax;
 519       break;
 520 #endif
 521 #ifdef ARCH_visium
 522      case bfd_arch_visium:
 523        disassemble = print_insn_visium;
 524        break;
 525 #endif
 526 #ifdef ARCH_frv
 527     case bfd_arch_frv:
 528       disassemble = print_insn_frv;
 529       break;
 530 #endif
 531 #ifdef ARCH_moxie
 532     case bfd_arch_moxie:
 533       disassemble = print_insn_moxie;
 534       break;
 535 #endif
 536 #ifdef ARCH_iq2000
 537     case bfd_arch_iq2000:
 538       disassemble = print_insn_iq2000;
 539       break;
 540 #endif
 541 #ifdef ARCH_m32c
 542     case bfd_arch_m32c:
 543       disassemble = print_insn_m32c;
 544       break;
 545 #endif
 546 #ifdef ARCH_tilegx
 547     case bfd_arch_tilegx:
 548       disassemble = print_insn_tilegx;
 549       break;
 550 #endif
 551 #ifdef ARCH_tilepro
 552     case bfd_arch_tilepro:
 553       disassemble = print_insn_tilepro;
 554       break;
 555 #endif
 556     default:
 557       return 0;
 558     }
 559   return disassemble;
 560 }
 561
 562 void
 563 disassembler_usage (FILE *stream ATTRIBUTE_UNUSED)
 564 {
 565 #ifdef ARCH_aarch64
 566   print_aarch64_disassembler_options (stream);
 567 #endif
 568 #ifdef ARCH_arc
 569   print_arc_disassembler_options (stream);
 570 #endif
 571 #ifdef ARCH_arm
 572   print_arm_disassembler_options (stream);
 573 #endif
 574 #ifdef ARCH_mips
 575   print_mips_disassembler_options (stream);
 576 #endif
 577 #ifdef ARCH_powerpc
 578   print_ppc_disassembler_options (stream);
 579 #endif
 580 #ifdef ARCH_riscv
 581   print_riscv_disassembler_options (stream);
 582 #endif
 583 #ifdef ARCH_i386
 584   print_i386_disassembler_options (stream);
 585 #endif
 586 #ifdef ARCH_s390
 587   print_s390_disassembler_options (stream);
 588 #endif
 589 #ifdef ARCH_wasm32
 590   print_wasm32_disassembler_options (stream);
 591 #endif
 592
 593   return;
 594 }
 595
 596 void
 597 disassemble_init_for_target (struct disassemble_info * info)
 598 {
 599   if (info == NULL)
 600     return;
 601
 602   switch (info->arch)
 603     {
 604 #ifdef ARCH_aarch64
 605     case bfd_arch_aarch64:
 606       info->symbol_is_valid = aarch64_symbol_is_valid;
 607       info->disassembler_needs_relocs = TRUE;
 608       break;
 609 #endif
 610 #ifdef ARCH_arm
 611     case bfd_arch_arm:
 612       info->symbol_is_valid = arm_symbol_is_valid;
 613       info->disassembler_needs_relocs = TRUE;
 614       break;
 615 #endif
 616 #ifdef ARCH_ia64
 617     case bfd_arch_ia64:
 618       info->skip_zeroes = 16;
 619       break;
 620 #endif
 621 #ifdef ARCH_tic4x
 622     case bfd_arch_tic4x:
 623       info->skip_zeroes = 32;
 624       break;
 625 #endif
 626 #ifdef ARCH_mep
 627     case bfd_arch_mep:
 628       info->skip_zeroes = 256;
 629       info->skip_zeroes_at_end = 0;
 630       break;
 631 #endif
 632 #ifdef ARCH_metag
 633     case bfd_arch_metag:
 634       info->disassembler_needs_relocs = TRUE;
 635       break;
 636 #endif
 637 #ifdef ARCH_m32c
 638     case bfd_arch_m32c:
 639       /* This processor in fact is little endian.  The value set here
 640          reflects the way opcodes are written in the cgen description.  */
 641       info->endian = BFD_ENDIAN_BIG;
 642       if (! info->insn_sets)
 643         {
 644           info->insn_sets = cgen_bitset_create (ISA_MAX);
 645           if (info->mach == bfd_mach_m16c)
 646             cgen_bitset_set (info->insn_sets, ISA_M16C);
 647           else
 648             cgen_bitset_set (info->insn_sets, ISA_M32C);
 649         }
 650       break;
 651 #endif
 652 #ifdef ARCH_pru
 653     case bfd_arch_pru:
 654       info->disassembler_needs_relocs = TRUE;
 655       break;
 656 #endif
 657 #ifdef ARCH_powerpc
 658     case bfd_arch_powerpc:
 659 #endif
 660 #ifdef ARCH_rs6000
 661     case bfd_arch_rs6000:
 662 #endif
 663 #if defined (ARCH_powerpc) || defined (ARCH_rs6000)
 664       disassemble_init_powerpc (info);
 665       break;
 666 #endif
 667 #ifdef ARCH_wasm32
 668     case bfd_arch_wasm32:
 669       disassemble_init_wasm32 (info);
 670       break;
 671 #endif
 672 #ifdef ARCH_s390
 673     case bfd_arch_s390:
 674       disassemble_init_s390 (info);
 675       break;
 676 #endif
 677     default:
 678       break;
 679     }
 680 }
 681
 682 /* Remove whitespace and consecutive commas from OPTIONS.  */
 683
 684 char *
 685 remove_whitespace_and_extra_commas (char *options)
 686 {
 687   char *str;
 688   size_t i, len;
 689
 690   if (options == NULL)
 691     return NULL;
 692
 693   /* Strip off all trailing whitespace and commas.  */
 694   for (len = strlen (options); len > 0; len--)
 695     {
 696       if (!ISSPACE (options[len - 1]) && options[len - 1] != ',')
 697         break;
 698       options[len - 1] = '\0';
 699     }
 700
 701   /* Convert all remaining whitespace to commas.  */
 702   for (i = 0; options[i] != '\0'; i++)
 703     if (ISSPACE (options[i]))
 704       options[i] = ',';
 705
 706   /* Remove consecutive commas.  */
 707   for (str = options; *str != '\0'; str++)
 708     if (*str == ',' && (*(str + 1) == ',' || str == options))
 709       {
 710         char *next = str + 1;
 711         while (*next == ',')
 712           next++;
 713         len = strlen (next);
 714         if (str != options)
 715           str++;
 716         memmove (str, next, len);
 717         next[len - (size_t)(next - str)] = '\0';
 718       }
 719   return (strlen (options) != 0) ? options : NULL;
 720 }
 721
 722 /* Like STRCMP, but treat ',' the same as '\0' so that we match
 723    strings like "foobar" against "foobar,xxyyzz,...".  */
 724
 725 int
 726 disassembler_options_cmp (const char *s1, const char *s2)
 727 {
 728   unsigned char c1, c2;
 729
 730   do
 731     {
 732       c1 = (unsigned char) *s1++;
 733       if (c1 == ',')
 734         c1 = '\0';
 735       c2 = (unsigned char) *s2++;
 736       if (c2 == ',')
 737         c2 = '\0';
 738       if (c1 == '\0')
 739         return c1 - c2;
 740     }
 741   while (c1 == c2);
 742
 743   return c1 - c2;
 744 }