opcodes/disassemble.c

   1 /* Select disassembly routine for specified architecture.
   2    Copyright (C) 1994-2017 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_rs6000
  80 #define ARCH_rl78
  81 #define ARCH_rx
  82 #define ARCH_s390
  83 #define ARCH_score
  84 #define ARCH_sh
  85 #define ARCH_sparc
  86 #define ARCH_spu
  87 #define ARCH_tic30
  88 #define ARCH_tic4x
  89 #define ARCH_tic54x
  90 #define ARCH_tic6x
  91 #define ARCH_tic80
  92 #define ARCH_tilegx
  93 #define ARCH_tilepro
  94 #define ARCH_v850
  95 #define ARCH_vax
  96 #define ARCH_visium
  97 #define ARCH_w65
  98 #define ARCH_wasm32
  99 #define ARCH_xstormy16
 100 #define ARCH_xc16x
 101 #define ARCH_xgate
 102 #define ARCH_xtensa
 103 #define ARCH_z80
 104 #define ARCH_z8k
 105 #define INCLUDE_SHMEDIA
 106 #endif
 107
 108 #ifdef ARCH_m32c
 109 #include "m32c-desc.h"
 110 #endif
 111
 112 disassembler_ftype
 113 disassembler (enum bfd_architecture a,
 114               bfd_boolean big ATTRIBUTE_UNUSED,
 115               unsigned long mach ATTRIBUTE_UNUSED,
 116               bfd *abfd ATTRIBUTE_UNUSED)
 117 {
 118   disassembler_ftype disassemble;
 119
 120   switch (a)
 121     {
 122       /* If you add a case to this table, also add it to the
 123          ARCH_all definition right above this function.  */
 124 #ifdef ARCH_aarch64
 125     case bfd_arch_aarch64:
 126       disassemble = print_insn_aarch64;
 127       break;
 128 #endif
 129 #ifdef ARCH_alpha
 130     case bfd_arch_alpha:
 131       disassemble = print_insn_alpha;
 132       break;
 133 #endif
 134 #ifdef ARCH_arc
 135     case bfd_arch_arc:
 136       disassemble = arc_get_disassembler (abfd);
 137       break;
 138 #endif
 139 #ifdef ARCH_arm
 140     case bfd_arch_arm:
 141       if (big)
 142         disassemble = print_insn_big_arm;
 143       else
 144         disassemble = print_insn_little_arm;
 145       break;
 146 #endif
 147 #ifdef ARCH_avr
 148     case bfd_arch_avr:
 149       disassemble = print_insn_avr;
 150       break;
 151 #endif
 152 #ifdef ARCH_bfin
 153     case bfd_arch_bfin:
 154       disassemble = print_insn_bfin;
 155       break;
 156 #endif
 157 #ifdef ARCH_cr16
 158     case bfd_arch_cr16:
 159       disassemble = print_insn_cr16;
 160       break;
 161 #endif
 162 #ifdef ARCH_cris
 163     case bfd_arch_cris:
 164       disassemble = cris_get_disassembler (abfd);
 165       break;
 166 #endif
 167 #ifdef ARCH_crx
 168     case bfd_arch_crx:
 169       disassemble = print_insn_crx;
 170       break;
 171 #endif
 172 #ifdef ARCH_d10v
 173     case bfd_arch_d10v:
 174       disassemble = print_insn_d10v;
 175       break;
 176 #endif
 177 #ifdef ARCH_d30v
 178     case bfd_arch_d30v:
 179       disassemble = print_insn_d30v;
 180       break;
 181 #endif
 182 #ifdef ARCH_dlx
 183     case bfd_arch_dlx:
 184       /* As far as I know we only handle big-endian DLX objects.  */
 185       disassemble = print_insn_dlx;
 186       break;
 187 #endif
 188 #ifdef ARCH_h8300
 189     case bfd_arch_h8300:
 190       if (mach == bfd_mach_h8300h || mach == bfd_mach_h8300hn)
 191         disassemble = print_insn_h8300h;
 192       else if (mach == bfd_mach_h8300s
 193                || mach == bfd_mach_h8300sn
 194                || mach == bfd_mach_h8300sx
 195                || mach == bfd_mach_h8300sxn)
 196         disassemble = print_insn_h8300s;
 197       else
 198         disassemble = print_insn_h8300;
 199       break;
 200 #endif
 201 #ifdef ARCH_h8500
 202     case bfd_arch_h8500:
 203       disassemble = print_insn_h8500;
 204       break;
 205 #endif
 206 #ifdef ARCH_hppa
 207     case bfd_arch_hppa:
 208       disassemble = print_insn_hppa;
 209       break;
 210 #endif
 211 #ifdef ARCH_i370
 212     case bfd_arch_i370:
 213       disassemble = print_insn_i370;
 214       break;
 215 #endif
 216 #ifdef ARCH_i386
 217     case bfd_arch_i386:
 218     case bfd_arch_iamcu:
 219     case bfd_arch_l1om:
 220     case bfd_arch_k1om:
 221       disassemble = print_insn_i386;
 222       break;
 223 #endif
 224 #ifdef ARCH_i860
 225     case bfd_arch_i860:
 226       disassemble = print_insn_i860;
 227       break;
 228 #endif
 229 #ifdef ARCH_i960
 230     case bfd_arch_i960:
 231       disassemble = print_insn_i960;
 232       break;
 233 #endif
 234 #ifdef ARCH_ia64
 235     case bfd_arch_ia64:
 236       disassemble = print_insn_ia64;
 237       break;
 238 #endif
 239 #ifdef ARCH_ip2k
 240     case bfd_arch_ip2k:
 241       disassemble = print_insn_ip2k;
 242       break;
 243 #endif
 244 #ifdef ARCH_epiphany
 245     case bfd_arch_epiphany:
 246       disassemble = print_insn_epiphany;
 247       break;
 248 #endif
 249 #ifdef ARCH_fr30
 250     case bfd_arch_fr30:
 251       disassemble = print_insn_fr30;
 252       break;
 253 #endif
 254 #ifdef ARCH_lm32
 255     case bfd_arch_lm32:
 256       disassemble = print_insn_lm32;
 257       break;
 258 #endif
 259 #ifdef ARCH_m32r
 260     case bfd_arch_m32r:
 261       disassemble = print_insn_m32r;
 262       break;
 263 #endif
 264 #if defined(ARCH_m68hc11) || defined(ARCH_m68hc12) \
 265     || defined(ARCH_9s12x) || defined(ARCH_m9s12xg)
 266     case bfd_arch_m68hc11:
 267       disassemble = print_insn_m68hc11;
 268       break;
 269     case bfd_arch_m68hc12:
 270       disassemble = print_insn_m68hc12;
 271       break;
 272     case bfd_arch_m9s12x:
 273       disassemble = print_insn_m9s12x;
 274       break;
 275     case bfd_arch_m9s12xg:
 276       disassemble = print_insn_m9s12xg;
 277       break;
 278 #endif
 279 #ifdef ARCH_m68k
 280     case bfd_arch_m68k:
 281       disassemble = print_insn_m68k;
 282       break;
 283 #endif
 284 #ifdef ARCH_m88k
 285     case bfd_arch_m88k:
 286       disassemble = print_insn_m88k;
 287       break;
 288 #endif
 289 #ifdef ARCH_mt
 290     case bfd_arch_mt:
 291       disassemble = print_insn_mt;
 292       break;
 293 #endif
 294 #ifdef ARCH_microblaze
 295     case bfd_arch_microblaze:
 296       disassemble = print_insn_microblaze;
 297       break;
 298 #endif
 299 #ifdef ARCH_msp430
 300     case bfd_arch_msp430:
 301       disassemble = print_insn_msp430;
 302       break;
 303 #endif
 304 #ifdef ARCH_nds32
 305     case bfd_arch_nds32:
 306       disassemble = print_insn_nds32;
 307       break;
 308 #endif
 309 #ifdef ARCH_ns32k
 310     case bfd_arch_ns32k:
 311       disassemble = print_insn_ns32k;
 312       break;
 313 #endif
 314 #ifdef ARCH_mcore
 315     case bfd_arch_mcore:
 316       disassemble = print_insn_mcore;
 317       break;
 318 #endif
 319 #ifdef ARCH_mep
 320     case bfd_arch_mep:
 321       disassemble = print_insn_mep;
 322       break;
 323 #endif
 324 #ifdef ARCH_metag
 325     case bfd_arch_metag:
 326       disassemble = print_insn_metag;
 327       break;
 328 #endif
 329 #ifdef ARCH_mips
 330     case bfd_arch_mips:
 331       if (big)
 332         disassemble = print_insn_big_mips;
 333       else
 334         disassemble = print_insn_little_mips;
 335       break;
 336 #endif
 337 #ifdef ARCH_mmix
 338     case bfd_arch_mmix:
 339       disassemble = print_insn_mmix;
 340       break;
 341 #endif
 342 #ifdef ARCH_mn10200
 343     case bfd_arch_mn10200:
 344       disassemble = print_insn_mn10200;
 345       break;
 346 #endif
 347 #ifdef ARCH_mn10300
 348     case bfd_arch_mn10300:
 349       disassemble = print_insn_mn10300;
 350       break;
 351 #endif
 352 #ifdef ARCH_nios2
 353     case bfd_arch_nios2:
 354       if (big)
 355         disassemble = print_insn_big_nios2;
 356       else
 357         disassemble = print_insn_little_nios2;
 358       break;
 359 #endif
 360 #ifdef ARCH_or1k
 361     case bfd_arch_or1k:
 362       disassemble = print_insn_or1k;
 363       break;
 364 #endif
 365 #ifdef ARCH_pdp11
 366     case bfd_arch_pdp11:
 367       disassemble = print_insn_pdp11;
 368       break;
 369 #endif
 370 #ifdef ARCH_pj
 371     case bfd_arch_pj:
 372       disassemble = print_insn_pj;
 373       break;
 374 #endif
 375 #ifdef ARCH_powerpc
 376     case bfd_arch_powerpc:
 377       if (big)
 378         disassemble = print_insn_big_powerpc;
 379       else
 380         disassemble = print_insn_little_powerpc;
 381       break;
 382 #endif
 383 #ifdef ARCH_pru
 384     case bfd_arch_pru:
 385       disassemble = print_insn_pru;
 386       break;
 387 #endif
 388 #ifdef ARCH_riscv
 389     case bfd_arch_riscv:
 390       disassemble = print_insn_riscv;
 391       break;
 392 #endif
 393 #ifdef ARCH_rs6000
 394     case bfd_arch_rs6000:
 395       if (mach == bfd_mach_ppc_620)
 396         disassemble = print_insn_big_powerpc;
 397       else
 398         disassemble = print_insn_rs6000;
 399       break;
 400 #endif
 401 #ifdef ARCH_rl78
 402     case bfd_arch_rl78:
 403       disassemble = rl78_get_disassembler (abfd);
 404       break;
 405 #endif
 406 #ifdef ARCH_rx
 407     case bfd_arch_rx:
 408       disassemble = print_insn_rx;
 409       break;
 410 #endif
 411 #ifdef ARCH_s390
 412     case bfd_arch_s390:
 413       disassemble = print_insn_s390;
 414       break;
 415 #endif
 416 #ifdef ARCH_score
 417     case bfd_arch_score:
 418       if (big)
 419         disassemble = print_insn_big_score;
 420       else
 421         disassemble = print_insn_little_score;
 422      break;
 423 #endif
 424 #ifdef ARCH_sh
 425     case bfd_arch_sh:
 426       disassemble = print_insn_sh;
 427       break;
 428 #endif
 429 #ifdef ARCH_sparc
 430     case bfd_arch_sparc:
 431       disassemble = print_insn_sparc;
 432       break;
 433 #endif
 434 #ifdef ARCH_spu
 435     case bfd_arch_spu:
 436       disassemble = print_insn_spu;
 437       break;
 438 #endif
 439 #ifdef ARCH_tic30
 440     case bfd_arch_tic30:
 441       disassemble = print_insn_tic30;
 442       break;
 443 #endif
 444 #ifdef ARCH_tic4x
 445     case bfd_arch_tic4x:
 446       disassemble = print_insn_tic4x;
 447       break;
 448 #endif
 449 #ifdef ARCH_tic54x
 450     case bfd_arch_tic54x:
 451       disassemble = print_insn_tic54x;
 452       break;
 453 #endif
 454 #ifdef ARCH_tic6x
 455     case bfd_arch_tic6x:
 456       disassemble = print_insn_tic6x;
 457       break;
 458 #endif
 459 #ifdef ARCH_tic80
 460     case bfd_arch_tic80:
 461       disassemble = print_insn_tic80;
 462       break;
 463 #endif
 464 #ifdef ARCH_ft32
 465     case bfd_arch_ft32:
 466       disassemble = print_insn_ft32;
 467       break;
 468 #endif
 469 #ifdef ARCH_v850
 470     case bfd_arch_v850:
 471     case bfd_arch_v850_rh850:
 472       disassemble = print_insn_v850;
 473       break;
 474 #endif
 475 #ifdef ARCH_w65
 476     case bfd_arch_w65:
 477       disassemble = print_insn_w65;
 478       break;
 479 #endif
 480 #ifdef ARCH_wasm32
 481     case bfd_arch_wasm32:
 482       disassemble = print_insn_wasm32;
 483       break;
 484 #endif
 485 #ifdef ARCH_xgate
 486     case bfd_arch_xgate:
 487       disassemble = print_insn_xgate;
 488       break;
 489 #endif
 490 #ifdef ARCH_xstormy16
 491     case bfd_arch_xstormy16:
 492       disassemble = print_insn_xstormy16;
 493       break;
 494 #endif
 495 #ifdef ARCH_xc16x
 496     case bfd_arch_xc16x:
 497       disassemble = print_insn_xc16x;
 498       break;
 499 #endif
 500 #ifdef ARCH_xtensa
 501     case bfd_arch_xtensa:
 502       disassemble = print_insn_xtensa;
 503       break;
 504 #endif
 505 #ifdef ARCH_z80
 506     case bfd_arch_z80:
 507       disassemble = print_insn_z80;
 508       break;
 509 #endif
 510 #ifdef ARCH_z8k
 511     case bfd_arch_z8k:
 512       if (mach == bfd_mach_z8001)
 513         disassemble = print_insn_z8001;
 514       else
 515         disassemble = print_insn_z8002;
 516       break;
 517 #endif
 518 #ifdef ARCH_vax
 519     case bfd_arch_vax:
 520       disassemble = print_insn_vax;
 521       break;
 522 #endif
 523 #ifdef ARCH_visium
 524      case bfd_arch_visium:
 525        disassemble = print_insn_visium;
 526        break;
 527 #endif
 528 #ifdef ARCH_frv
 529     case bfd_arch_frv:
 530       disassemble = print_insn_frv;
 531       break;
 532 #endif
 533 #ifdef ARCH_moxie
 534     case bfd_arch_moxie:
 535       disassemble = print_insn_moxie;
 536       break;
 537 #endif
 538 #ifdef ARCH_iq2000
 539     case bfd_arch_iq2000:
 540       disassemble = print_insn_iq2000;
 541       break;
 542 #endif
 543 #ifdef ARCH_m32c
 544     case bfd_arch_m32c:
 545       disassemble = print_insn_m32c;
 546       break;
 547 #endif
 548 #ifdef ARCH_tilegx
 549     case bfd_arch_tilegx:
 550       disassemble = print_insn_tilegx;
 551       break;
 552 #endif
 553 #ifdef ARCH_tilepro
 554     case bfd_arch_tilepro:
 555       disassemble = print_insn_tilepro;
 556       break;
 557 #endif
 558     default:
 559       return 0;
 560     }
 561   return disassemble;
 562 }
 563
 564 void
 565 disassembler_usage (FILE *stream ATTRIBUTE_UNUSED)
 566 {
 567 #ifdef ARCH_aarch64
 568   print_aarch64_disassembler_options (stream);
 569 #endif
 570 #ifdef ARCH_arc
 571   print_arc_disassembler_options (stream);
 572 #endif
 573 #ifdef ARCH_arm
 574   print_arm_disassembler_options (stream);
 575 #endif
 576 #ifdef ARCH_mips
 577   print_mips_disassembler_options (stream);
 578 #endif
 579 #ifdef ARCH_powerpc
 580   print_ppc_disassembler_options (stream);
 581 #endif
 582 #ifdef ARCH_riscv
 583   print_riscv_disassembler_options (stream);
 584 #endif
 585 #ifdef ARCH_i386
 586   print_i386_disassembler_options (stream);
 587 #endif
 588 #ifdef ARCH_s390
 589   print_s390_disassembler_options (stream);
 590 #endif
 591 #ifdef ARCH_wasm32
 592   print_wasm32_disassembler_options (stream);
 593 #endif
 594
 595   return;
 596 }
 597
 598 void
 599 disassemble_init_for_target (struct disassemble_info * info)
 600 {
 601   if (info == NULL)
 602     return;
 603
 604   switch (info->arch)
 605     {
 606 #ifdef ARCH_aarch64
 607     case bfd_arch_aarch64:
 608       info->symbol_is_valid = aarch64_symbol_is_valid;
 609       info->disassembler_needs_relocs = TRUE;
 610       break;
 611 #endif
 612 #ifdef ARCH_arm
 613     case bfd_arch_arm:
 614       info->symbol_is_valid = arm_symbol_is_valid;
 615       info->disassembler_needs_relocs = TRUE;
 616       break;
 617 #endif
 618 #ifdef ARCH_ia64
 619     case bfd_arch_ia64:
 620       info->skip_zeroes = 16;
 621       break;
 622 #endif
 623 #ifdef ARCH_tic4x
 624     case bfd_arch_tic4x:
 625       info->skip_zeroes = 32;
 626       break;
 627 #endif
 628 #ifdef ARCH_mep
 629     case bfd_arch_mep:
 630       info->skip_zeroes = 256;
 631       info->skip_zeroes_at_end = 0;
 632       break;
 633 #endif
 634 #ifdef ARCH_metag
 635     case bfd_arch_metag:
 636       info->disassembler_needs_relocs = TRUE;
 637       break;
 638 #endif
 639 #ifdef ARCH_m32c
 640     case bfd_arch_m32c:
 641       /* This processor in fact is little endian.  The value set here
 642          reflects the way opcodes are written in the cgen description.  */
 643       info->endian = BFD_ENDIAN_BIG;
 644       if (! info->insn_sets)
 645         {
 646           info->insn_sets = cgen_bitset_create (ISA_MAX);
 647           if (info->mach == bfd_mach_m16c)
 648             cgen_bitset_set (info->insn_sets, ISA_M16C);
 649           else
 650             cgen_bitset_set (info->insn_sets, ISA_M32C);
 651         }
 652       break;
 653 #endif
 654 #ifdef ARCH_powerpc
 655     case bfd_arch_powerpc:
 656 #endif
 657 #ifdef ARCH_rs6000
 658     case bfd_arch_rs6000:
 659 #endif
 660 #if defined (ARCH_powerpc) || defined (ARCH_rs6000)
 661       disassemble_init_powerpc (info);
 662       break;
 663 #endif
 664 #ifdef ARCH_wasm32
 665     case bfd_arch_wasm32:
 666       disassemble_init_wasm32 (info);
 667       break;
 668 #endif
 669 #ifdef ARCH_s390
 670     case bfd_arch_s390:
 671       disassemble_init_s390 (info);
 672       break;
 673 #endif
 674     default:
 675       break;
 676     }
 677 }
 678
 679 /* Remove whitespace and consecutive commas from OPTIONS.  */
 680
 681 char *
 682 remove_whitespace_and_extra_commas (char *options)
 683 {
 684   char *str;
 685   size_t i, len;
 686
 687   if (options == NULL)
 688     return NULL;
 689
 690   /* Strip off all trailing whitespace and commas.  */
 691   for (len = strlen (options); len > 0; len--)
 692     {
 693       if (!ISSPACE (options[len - 1]) && options[len - 1] != ',')
 694         break;
 695       options[len - 1] = '\0';
 696     }
 697
 698   /* Convert all remaining whitespace to commas.  */
 699   for (i = 0; options[i] != '\0'; i++)
 700     if (ISSPACE (options[i]))
 701       options[i] = ',';
 702
 703   /* Remove consecutive commas.  */
 704   for (str = options; *str != '\0'; str++)
 705     if (*str == ',' && (*(str + 1) == ',' || str == options))
 706       {
 707         char *next = str + 1;
 708         while (*next == ',')
 709           next++;
 710         len = strlen (next);
 711         if (str != options)
 712           str++;
 713         memmove (str, next, len);
 714         next[len - (size_t)(next - str)] = '\0';
 715       }
 716   return (strlen (options) != 0) ? options : NULL;
 717 }
 718
 719 /* Like STRCMP, but treat ',' the same as '\0' so that we match
 720    strings like "foobar" against "foobar,xxyyzz,...".  */
 721
 722 int
 723 disassembler_options_cmp (const char *s1, const char *s2)
 724 {
 725   unsigned char c1, c2;
 726
 727   do
 728     {
 729       c1 = (unsigned char) *s1++;
 730       if (c1 == ',')
 731         c1 = '\0';
 732       c2 = (unsigned char) *s2++;
 733       if (c2 == ',')
 734         c2 = '\0';
 735       if (c1 == '\0')
 736         return c1 - c2;
 737     }
 738   while (c1 == c2);
 739
 740   return c1 - c2;
 741 }