| 1 | /* Instruction printing code for the ARM |
| 2 | Copyright (C) 1994, 95, 96, 97, 1998 Free Software Foundation, Inc. |
| 3 | Contributed by Richard Earnshaw (rwe@pegasus.esprit.ec.org) |
| 4 | Modification by James G. Smith (jsmith@cygnus.co.uk) |
| 5 | |
| 6 | This file is part of libopcodes. |
| 7 | |
| 8 | This program is free software; you can redistribute it and/or modify it under |
| 9 | the terms of the GNU General Public License as published by the Free |
| 10 | Software Foundation; either version 2 of the License, or (at your option) |
| 11 | any later version. |
| 12 | |
| 13 | This program is distributed in the hope that it will be useful, but WITHOUT |
| 14 | ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 15 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for |
| 16 | more details. |
| 17 | |
| 18 | You should have received a copy of the GNU General Public License |
| 19 | along with this program; if not, write to the Free Software |
| 20 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ |
| 21 | |
| 22 | #include "dis-asm.h" |
| 23 | #define DEFINE_TABLE |
| 24 | #include "arm-opc.h" |
| 25 | #include "coff/internal.h" |
| 26 | #include "libcoff.h" |
| 27 | #include "opintl.h" |
| 28 | |
| 29 | /* FIXME: This shouldn't be done here */ |
| 30 | #include "elf-bfd.h" |
| 31 | #include "elf/internal.h" |
| 32 | |
| 33 | static char *arm_conditional[] = |
| 34 | {"eq", "ne", "cs", "cc", "mi", "pl", "vs", "vc", |
| 35 | "hi", "ls", "ge", "lt", "gt", "le", "", "nv"}; |
| 36 | |
| 37 | static char *arm_regnames[] = |
| 38 | {"r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", |
| 39 | "r8", "r9", "sl", "fp", "ip", "sp", "lr", "pc"}; |
| 40 | |
| 41 | static char *arm_fp_const[] = |
| 42 | {"0.0", "1.0", "2.0", "3.0", "4.0", "5.0", "0.5", "10.0"}; |
| 43 | |
| 44 | static char *arm_shift[] = |
| 45 | {"lsl", "lsr", "asr", "ror"}; |
| 46 | |
| 47 | static int print_insn_arm PARAMS ((bfd_vma, struct disassemble_info *, |
| 48 | long)); |
| 49 | |
| 50 | static void |
| 51 | arm_decode_shift (given, func, stream) |
| 52 | long given; |
| 53 | fprintf_ftype func; |
| 54 | void *stream; |
| 55 | { |
| 56 | func (stream, "%s", arm_regnames[given & 0xf]); |
| 57 | if ((given & 0xff0) != 0) |
| 58 | { |
| 59 | if ((given & 0x10) == 0) |
| 60 | { |
| 61 | int amount = (given & 0xf80) >> 7; |
| 62 | int shift = (given & 0x60) >> 5; |
| 63 | if (amount == 0) |
| 64 | { |
| 65 | if (shift == 3) |
| 66 | { |
| 67 | func (stream, ", rrx"); |
| 68 | return; |
| 69 | } |
| 70 | amount = 32; |
| 71 | } |
| 72 | func (stream, ", %s #%d", arm_shift[shift], amount); |
| 73 | } |
| 74 | else |
| 75 | func (stream, ", %s %s", arm_shift[(given & 0x60) >> 5], |
| 76 | arm_regnames[(given & 0xf00) >> 8]); |
| 77 | } |
| 78 | } |
| 79 | |
| 80 | /* Print one instruction from PC on INFO->STREAM. |
| 81 | Return the size of the instruction (always 4 on ARM). */ |
| 82 | |
| 83 | static int |
| 84 | print_insn_arm (pc, info, given) |
| 85 | bfd_vma pc; |
| 86 | struct disassemble_info *info; |
| 87 | long given; |
| 88 | { |
| 89 | struct arm_opcode *insn; |
| 90 | void *stream = info->stream; |
| 91 | fprintf_ftype func = info->fprintf_func; |
| 92 | |
| 93 | for (insn = arm_opcodes; insn->assembler; insn++) |
| 94 | { |
| 95 | if ((given & insn->mask) == insn->value) |
| 96 | { |
| 97 | char *c; |
| 98 | for (c = insn->assembler; *c; c++) |
| 99 | { |
| 100 | if (*c == '%') |
| 101 | { |
| 102 | switch (*++c) |
| 103 | { |
| 104 | case '%': |
| 105 | func (stream, "%%"); |
| 106 | break; |
| 107 | |
| 108 | case 'a': |
| 109 | if (((given & 0x000f0000) == 0x000f0000) |
| 110 | && ((given & 0x02000000) == 0)) |
| 111 | { |
| 112 | int offset = given & 0xfff; |
| 113 | if ((given & 0x00800000) == 0) |
| 114 | offset = -offset; |
| 115 | (*info->print_address_func) |
| 116 | (offset + pc + 8, info); |
| 117 | } |
| 118 | else |
| 119 | { |
| 120 | func (stream, "[%s", |
| 121 | arm_regnames[(given >> 16) & 0xf]); |
| 122 | if ((given & 0x01000000) != 0) |
| 123 | { |
| 124 | if ((given & 0x02000000) == 0) |
| 125 | { |
| 126 | int offset = given & 0xfff; |
| 127 | if (offset) |
| 128 | func (stream, ", %s#%d", |
| 129 | (((given & 0x00800000) == 0) |
| 130 | ? "-" : ""), offset); |
| 131 | } |
| 132 | else |
| 133 | { |
| 134 | func (stream, ", %s", |
| 135 | (((given & 0x00800000) == 0) |
| 136 | ? "-" : "")); |
| 137 | arm_decode_shift (given, func, stream); |
| 138 | } |
| 139 | |
| 140 | func (stream, "]%s", |
| 141 | ((given & 0x00200000) != 0) ? "!" : ""); |
| 142 | } |
| 143 | else |
| 144 | { |
| 145 | if ((given & 0x02000000) == 0) |
| 146 | { |
| 147 | int offset = given & 0xfff; |
| 148 | if (offset) |
| 149 | func (stream, "], %s#%d", |
| 150 | (((given & 0x00800000) == 0) |
| 151 | ? "-" : ""), offset); |
| 152 | else |
| 153 | func (stream, "]"); |
| 154 | } |
| 155 | else |
| 156 | { |
| 157 | func (stream, "], %s", |
| 158 | (((given & 0x00800000) == 0) |
| 159 | ? "-" : "")); |
| 160 | arm_decode_shift (given, func, stream); |
| 161 | } |
| 162 | } |
| 163 | } |
| 164 | break; |
| 165 | |
| 166 | case 's': |
| 167 | if ((given & 0x004f0000) == 0x004f0000) |
| 168 | { |
| 169 | /* PC relative with immediate offset */ |
| 170 | int offset = ((given & 0xf00) >> 4) | (given & 0xf); |
| 171 | if ((given & 0x00800000) == 0) |
| 172 | offset = -offset; |
| 173 | (*info->print_address_func) |
| 174 | (offset + pc + 8, info); |
| 175 | } |
| 176 | else |
| 177 | { |
| 178 | func (stream, "[%s", |
| 179 | arm_regnames[(given >> 16) & 0xf]); |
| 180 | if ((given & 0x01000000) != 0) |
| 181 | { |
| 182 | /* pre-indexed */ |
| 183 | if ((given & 0x00400000) == 0x00400000) |
| 184 | { |
| 185 | /* immediate */ |
| 186 | int offset = ((given & 0xf00) >> 4) | (given & 0xf); |
| 187 | if (offset) |
| 188 | func (stream, ", %s#%d", |
| 189 | (((given & 0x00800000) == 0) |
| 190 | ? "-" : ""), offset); |
| 191 | } |
| 192 | else |
| 193 | { |
| 194 | /* register */ |
| 195 | func (stream, ", %s%s", |
| 196 | (((given & 0x00800000) == 0) |
| 197 | ? "-" : ""), |
| 198 | arm_regnames[given & 0xf]); |
| 199 | } |
| 200 | |
| 201 | func (stream, "]%s", |
| 202 | ((given & 0x00200000) != 0) ? "!" : ""); |
| 203 | } |
| 204 | else |
| 205 | { |
| 206 | /* post-indexed */ |
| 207 | if ((given & 0x00400000) == 0x00400000) |
| 208 | { |
| 209 | /* immediate */ |
| 210 | int offset = ((given & 0xf00) >> 4) | (given & 0xf); |
| 211 | if (offset) |
| 212 | func (stream, "], %s#%d", |
| 213 | (((given & 0x00800000) == 0) |
| 214 | ? "-" : ""), offset); |
| 215 | else |
| 216 | func (stream, "]"); |
| 217 | } |
| 218 | else |
| 219 | { |
| 220 | /* register */ |
| 221 | func (stream, "], %s%s", |
| 222 | (((given & 0x00800000) == 0) |
| 223 | ? "-" : ""), |
| 224 | arm_regnames[given & 0xf]); |
| 225 | } |
| 226 | } |
| 227 | } |
| 228 | break; |
| 229 | |
| 230 | case 'b': |
| 231 | (*info->print_address_func) |
| 232 | (BDISP (given) * 4 + pc + 8, info); |
| 233 | break; |
| 234 | |
| 235 | case 'c': |
| 236 | func (stream, "%s", |
| 237 | arm_conditional [(given >> 28) & 0xf]); |
| 238 | break; |
| 239 | |
| 240 | case 'm': |
| 241 | { |
| 242 | int started = 0; |
| 243 | int reg; |
| 244 | |
| 245 | func (stream, "{"); |
| 246 | for (reg = 0; reg < 16; reg++) |
| 247 | if ((given & (1 << reg)) != 0) |
| 248 | { |
| 249 | if (started) |
| 250 | func (stream, ", "); |
| 251 | started = 1; |
| 252 | func (stream, "%s", arm_regnames[reg]); |
| 253 | } |
| 254 | func (stream, "}"); |
| 255 | } |
| 256 | break; |
| 257 | |
| 258 | case 'o': |
| 259 | if ((given & 0x02000000) != 0) |
| 260 | { |
| 261 | int rotate = (given & 0xf00) >> 7; |
| 262 | int immed = (given & 0xff); |
| 263 | func (stream, "#%d", |
| 264 | ((immed << (32 - rotate)) |
| 265 | | (immed >> rotate)) & 0xffffffff); |
| 266 | } |
| 267 | else |
| 268 | arm_decode_shift (given, func, stream); |
| 269 | break; |
| 270 | |
| 271 | case 'p': |
| 272 | if ((given & 0x0000f000) == 0x0000f000) |
| 273 | func (stream, "p"); |
| 274 | break; |
| 275 | |
| 276 | case 't': |
| 277 | if ((given & 0x01200000) == 0x00200000) |
| 278 | func (stream, "t"); |
| 279 | break; |
| 280 | |
| 281 | case 'h': |
| 282 | if ((given & 0x00000020) == 0x00000020) |
| 283 | func (stream, "h"); |
| 284 | else |
| 285 | func (stream, "b"); |
| 286 | break; |
| 287 | |
| 288 | case 'A': |
| 289 | func (stream, "[%s", arm_regnames [(given >> 16) & 0xf]); |
| 290 | if ((given & 0x01000000) != 0) |
| 291 | { |
| 292 | int offset = given & 0xff; |
| 293 | if (offset) |
| 294 | func (stream, ", %s#%d]%s", |
| 295 | ((given & 0x00800000) == 0 ? "-" : ""), |
| 296 | offset * 4, |
| 297 | ((given & 0x00200000) != 0 ? "!" : "")); |
| 298 | else |
| 299 | func (stream, "]"); |
| 300 | } |
| 301 | else |
| 302 | { |
| 303 | int offset = given & 0xff; |
| 304 | if (offset) |
| 305 | func (stream, "], %s#%d", |
| 306 | ((given & 0x00800000) == 0 ? "-" : ""), |
| 307 | offset * 4); |
| 308 | else |
| 309 | func (stream, "]"); |
| 310 | } |
| 311 | break; |
| 312 | |
| 313 | case 'C': |
| 314 | switch (given & 0x00090000) |
| 315 | { |
| 316 | default: |
| 317 | func (stream, "_???"); |
| 318 | break; |
| 319 | case 0x90000: |
| 320 | func (stream, "_all"); |
| 321 | break; |
| 322 | case 0x10000: |
| 323 | func (stream, "_ctl"); |
| 324 | break; |
| 325 | case 0x80000: |
| 326 | func (stream, "_flg"); |
| 327 | break; |
| 328 | } |
| 329 | break; |
| 330 | |
| 331 | case 'F': |
| 332 | switch (given & 0x00408000) |
| 333 | { |
| 334 | case 0: |
| 335 | func (stream, "4"); |
| 336 | break; |
| 337 | case 0x8000: |
| 338 | func (stream, "1"); |
| 339 | break; |
| 340 | case 0x00400000: |
| 341 | func (stream, "2"); |
| 342 | break; |
| 343 | default: |
| 344 | func (stream, "3"); |
| 345 | } |
| 346 | break; |
| 347 | |
| 348 | case 'P': |
| 349 | switch (given & 0x00080080) |
| 350 | { |
| 351 | case 0: |
| 352 | func (stream, "s"); |
| 353 | break; |
| 354 | case 0x80: |
| 355 | func (stream, "d"); |
| 356 | break; |
| 357 | case 0x00080000: |
| 358 | func (stream, "e"); |
| 359 | break; |
| 360 | default: |
| 361 | func (stream, _("<illegal precision>")); |
| 362 | break; |
| 363 | } |
| 364 | break; |
| 365 | case 'Q': |
| 366 | switch (given & 0x00408000) |
| 367 | { |
| 368 | case 0: |
| 369 | func (stream, "s"); |
| 370 | break; |
| 371 | case 0x8000: |
| 372 | func (stream, "d"); |
| 373 | break; |
| 374 | case 0x00400000: |
| 375 | func (stream, "e"); |
| 376 | break; |
| 377 | default: |
| 378 | func (stream, "p"); |
| 379 | break; |
| 380 | } |
| 381 | break; |
| 382 | case 'R': |
| 383 | switch (given & 0x60) |
| 384 | { |
| 385 | case 0: |
| 386 | break; |
| 387 | case 0x20: |
| 388 | func (stream, "p"); |
| 389 | break; |
| 390 | case 0x40: |
| 391 | func (stream, "m"); |
| 392 | break; |
| 393 | default: |
| 394 | func (stream, "z"); |
| 395 | break; |
| 396 | } |
| 397 | break; |
| 398 | |
| 399 | case '0': case '1': case '2': case '3': case '4': |
| 400 | case '5': case '6': case '7': case '8': case '9': |
| 401 | { |
| 402 | int bitstart = *c++ - '0'; |
| 403 | int bitend = 0; |
| 404 | while (*c >= '0' && *c <= '9') |
| 405 | bitstart = (bitstart * 10) + *c++ - '0'; |
| 406 | |
| 407 | switch (*c) |
| 408 | { |
| 409 | case '-': |
| 410 | c++; |
| 411 | while (*c >= '0' && *c <= '9') |
| 412 | bitend = (bitend * 10) + *c++ - '0'; |
| 413 | if (!bitend) |
| 414 | abort (); |
| 415 | switch (*c) |
| 416 | { |
| 417 | case 'r': |
| 418 | { |
| 419 | long reg; |
| 420 | reg = given >> bitstart; |
| 421 | reg &= (2 << (bitend - bitstart)) - 1; |
| 422 | func (stream, "%s", arm_regnames[reg]); |
| 423 | } |
| 424 | break; |
| 425 | case 'd': |
| 426 | { |
| 427 | long reg; |
| 428 | reg = given >> bitstart; |
| 429 | reg &= (2 << (bitend - bitstart)) - 1; |
| 430 | func (stream, "%d", reg); |
| 431 | } |
| 432 | break; |
| 433 | case 'x': |
| 434 | { |
| 435 | long reg; |
| 436 | reg = given >> bitstart; |
| 437 | reg &= (2 << (bitend - bitstart)) - 1; |
| 438 | func (stream, "0x%08x", reg); |
| 439 | } |
| 440 | break; |
| 441 | case 'f': |
| 442 | { |
| 443 | long reg; |
| 444 | reg = given >> bitstart; |
| 445 | reg &= (2 << (bitend - bitstart)) - 1; |
| 446 | if (reg > 7) |
| 447 | func (stream, "#%s", |
| 448 | arm_fp_const[reg & 7]); |
| 449 | else |
| 450 | func (stream, "f%d", reg); |
| 451 | } |
| 452 | break; |
| 453 | default: |
| 454 | abort (); |
| 455 | } |
| 456 | break; |
| 457 | case '`': |
| 458 | c++; |
| 459 | if ((given & (1 << bitstart)) == 0) |
| 460 | func (stream, "%c", *c); |
| 461 | break; |
| 462 | case '\'': |
| 463 | c++; |
| 464 | if ((given & (1 << bitstart)) != 0) |
| 465 | func (stream, "%c", *c); |
| 466 | break; |
| 467 | case '?': |
| 468 | ++c; |
| 469 | if ((given & (1 << bitstart)) != 0) |
| 470 | func (stream, "%c", *c++); |
| 471 | else |
| 472 | func (stream, "%c", *++c); |
| 473 | break; |
| 474 | default: |
| 475 | abort (); |
| 476 | } |
| 477 | break; |
| 478 | |
| 479 | default: |
| 480 | abort (); |
| 481 | } |
| 482 | } |
| 483 | } |
| 484 | else |
| 485 | func (stream, "%c", *c); |
| 486 | } |
| 487 | return 4; |
| 488 | } |
| 489 | } |
| 490 | abort (); |
| 491 | } |
| 492 | |
| 493 | /* Print one instruction from PC on INFO->STREAM. |
| 494 | Return the size of the instruction. */ |
| 495 | |
| 496 | static int |
| 497 | print_insn_thumb (pc, info, given) |
| 498 | bfd_vma pc; |
| 499 | struct disassemble_info *info; |
| 500 | long given; |
| 501 | { |
| 502 | struct thumb_opcode *insn; |
| 503 | void *stream = info->stream; |
| 504 | fprintf_ftype func = info->fprintf_func; |
| 505 | |
| 506 | for (insn = thumb_opcodes; insn->assembler; insn++) |
| 507 | { |
| 508 | if ((given & insn->mask) == insn->value) |
| 509 | { |
| 510 | char *c = insn->assembler; |
| 511 | |
| 512 | /* Special processing for Thumb 2 instruction BL sequence: */ |
| 513 | if (!*c) /* check for empty (not NULL) assembler string */ |
| 514 | { |
| 515 | info->bytes_per_chunk = 4; |
| 516 | info->bytes_per_line = 4; |
| 517 | |
| 518 | func (stream, "%04x\tbl\t", given & 0xffff); |
| 519 | (*info->print_address_func) |
| 520 | (BDISP23 (given) * 2 + pc + 4, info); |
| 521 | return 4; |
| 522 | } |
| 523 | else |
| 524 | { |
| 525 | info->bytes_per_chunk = 2; |
| 526 | info->bytes_per_line = 4; |
| 527 | |
| 528 | given &= 0xffff; |
| 529 | func (stream, "%04x\t", given); |
| 530 | for (; *c; c++) |
| 531 | { |
| 532 | if (*c == '%') |
| 533 | { |
| 534 | int domaskpc = 0; |
| 535 | int domasklr = 0; |
| 536 | switch (*++c) |
| 537 | { |
| 538 | case '%': |
| 539 | func (stream, "%%"); |
| 540 | break; |
| 541 | |
| 542 | case 'S': |
| 543 | { |
| 544 | long reg; |
| 545 | reg = (given >> 3) & 0x7; |
| 546 | if (given & (1 << 6)) |
| 547 | reg += 8; |
| 548 | func (stream, "%s", arm_regnames[reg]); |
| 549 | } |
| 550 | break; |
| 551 | |
| 552 | case 'D': |
| 553 | { |
| 554 | long reg; |
| 555 | reg = given & 0x7; |
| 556 | if (given & (1 << 7)) |
| 557 | reg += 8; |
| 558 | func (stream, "%s", arm_regnames[reg]); |
| 559 | } |
| 560 | break; |
| 561 | |
| 562 | case 'T': |
| 563 | func (stream, "%s", |
| 564 | arm_conditional [(given >> 8) & 0xf]); |
| 565 | break; |
| 566 | |
| 567 | case 'N': |
| 568 | if (given & (1 << 8)) |
| 569 | domasklr = 1; |
| 570 | /* fall through */ |
| 571 | case 'O': |
| 572 | if (*c == 'O' && (given & (1 << 8))) |
| 573 | domaskpc = 1; |
| 574 | /* fall through */ |
| 575 | case 'M': |
| 576 | { |
| 577 | int started = 0; |
| 578 | int reg; |
| 579 | func (stream, "{"); |
| 580 | /* It would be nice if we could spot |
| 581 | ranges, and generate the rS-rE format: */ |
| 582 | for (reg = 0; (reg < 8); reg++) |
| 583 | if ((given & (1 << reg)) != 0) |
| 584 | { |
| 585 | if (started) |
| 586 | func (stream, ", "); |
| 587 | started = 1; |
| 588 | func (stream, "%s", arm_regnames[reg]); |
| 589 | } |
| 590 | |
| 591 | if (domasklr) |
| 592 | { |
| 593 | if (started) |
| 594 | func (stream, ", "); |
| 595 | started = 1; |
| 596 | func (stream, "lr"); |
| 597 | } |
| 598 | |
| 599 | if (domaskpc) |
| 600 | { |
| 601 | if (started) |
| 602 | func (stream, ", "); |
| 603 | func (stream, "pc"); |
| 604 | } |
| 605 | |
| 606 | func (stream, "}"); |
| 607 | } |
| 608 | break; |
| 609 | |
| 610 | |
| 611 | case '0': case '1': case '2': case '3': case '4': |
| 612 | case '5': case '6': case '7': case '8': case '9': |
| 613 | { |
| 614 | int bitstart = *c++ - '0'; |
| 615 | int bitend = 0; |
| 616 | while (*c >= '0' && *c <= '9') |
| 617 | bitstart = (bitstart * 10) + *c++ - '0'; |
| 618 | |
| 619 | switch (*c) |
| 620 | { |
| 621 | case '-': |
| 622 | { |
| 623 | long reg; |
| 624 | c++; |
| 625 | while (*c >= '0' && *c <= '9') |
| 626 | bitend = (bitend * 10) + *c++ - '0'; |
| 627 | if (!bitend) |
| 628 | abort (); |
| 629 | reg = given >> bitstart; |
| 630 | reg &= (2 << (bitend - bitstart)) - 1; |
| 631 | switch (*c) |
| 632 | { |
| 633 | case 'r': |
| 634 | func (stream, "%s", arm_regnames[reg]); |
| 635 | break; |
| 636 | |
| 637 | case 'd': |
| 638 | func (stream, "%d", reg); |
| 639 | break; |
| 640 | |
| 641 | case 'H': |
| 642 | func (stream, "%d", reg << 1); |
| 643 | break; |
| 644 | |
| 645 | case 'W': |
| 646 | func (stream, "%d", reg << 2); |
| 647 | break; |
| 648 | |
| 649 | case 'a': |
| 650 | /* PC-relative address -- the bottom two |
| 651 | bits of the address are dropped before |
| 652 | the calculation. */ |
| 653 | info->print_address_func |
| 654 | (((pc + 4) & ~3) + (reg << 2), info); |
| 655 | break; |
| 656 | |
| 657 | case 'x': |
| 658 | func (stream, "0x%04x", reg); |
| 659 | break; |
| 660 | |
| 661 | case 'I': |
| 662 | reg = ((reg ^ (1 << bitend)) - (1 << bitend)); |
| 663 | func (stream, "%d", reg); |
| 664 | break; |
| 665 | |
| 666 | case 'B': |
| 667 | reg = ((reg ^ (1 << bitend)) - (1 << bitend)); |
| 668 | (*info->print_address_func) |
| 669 | (reg * 2 + pc + 4, info); |
| 670 | break; |
| 671 | |
| 672 | default: |
| 673 | abort(); |
| 674 | } |
| 675 | } |
| 676 | break; |
| 677 | |
| 678 | case '\'': |
| 679 | c++; |
| 680 | if ((given & (1 << bitstart)) != 0) |
| 681 | func (stream, "%c", *c); |
| 682 | break; |
| 683 | |
| 684 | case '?': |
| 685 | ++c; |
| 686 | if ((given & (1 << bitstart)) != 0) |
| 687 | func (stream, "%c", *c++); |
| 688 | else |
| 689 | func (stream, "%c", *++c); |
| 690 | break; |
| 691 | |
| 692 | default: |
| 693 | abort(); |
| 694 | } |
| 695 | } |
| 696 | break; |
| 697 | |
| 698 | default: |
| 699 | abort (); |
| 700 | } |
| 701 | } |
| 702 | else |
| 703 | func (stream, "%c", *c); |
| 704 | } |
| 705 | } |
| 706 | return 2; |
| 707 | } |
| 708 | } |
| 709 | |
| 710 | /* no match */ |
| 711 | abort (); |
| 712 | } |
| 713 | |
| 714 | /* NOTE: There are no checks in these routines that the relevant number of data bytes exist */ |
| 715 | |
| 716 | int |
| 717 | print_insn_big_arm (pc, info) |
| 718 | bfd_vma pc; |
| 719 | struct disassemble_info *info; |
| 720 | { |
| 721 | unsigned char b[4]; |
| 722 | long given; |
| 723 | int status; |
| 724 | coff_symbol_type *cs; |
| 725 | elf_symbol_type *es; |
| 726 | int is_thumb; |
| 727 | |
| 728 | is_thumb = false; |
| 729 | if (info->symbols != NULL) |
| 730 | { |
| 731 | if (bfd_asymbol_flavour (*info->symbols) == bfd_target_coff_flavour) |
| 732 | { |
| 733 | cs = coffsymbol (*info->symbols); |
| 734 | is_thumb = (cs->native->u.syment.n_sclass == C_THUMBEXT |
| 735 | || cs->native->u.syment.n_sclass == C_THUMBSTAT |
| 736 | || cs->native->u.syment.n_sclass == C_THUMBLABEL |
| 737 | || cs->native->u.syment.n_sclass == C_THUMBEXTFUNC |
| 738 | || cs->native->u.syment.n_sclass == C_THUMBSTATFUNC); |
| 739 | |
| 740 | } |
| 741 | else if (bfd_asymbol_flavour (*info->symbols) == bfd_target_elf_flavour) |
| 742 | { |
| 743 | es = *(elf_symbol_type **)(info->symbols); |
| 744 | is_thumb = ELF_ST_TYPE (es->internal_elf_sym.st_info) == |
| 745 | STT_ARM_TFUNC; |
| 746 | } |
| 747 | } |
| 748 | |
| 749 | info->bytes_per_chunk = 4; |
| 750 | info->display_endian = BFD_ENDIAN_BIG; |
| 751 | |
| 752 | /* Always fetch word aligned values. */ |
| 753 | |
| 754 | status = (*info->read_memory_func) (pc & ~ 0x3, (bfd_byte *) &b[0], 4, info); |
| 755 | if (status != 0) |
| 756 | { |
| 757 | (*info->memory_error_func) (status, pc, info); |
| 758 | return -1; |
| 759 | } |
| 760 | |
| 761 | if (is_thumb) |
| 762 | { |
| 763 | if (pc & 0x2) |
| 764 | { |
| 765 | given = (b[2] << 8) | b[3]; |
| 766 | |
| 767 | status = info->read_memory_func ((pc + 4) & ~ 0x3, (bfd_byte *) b, 4, info); |
| 768 | if (status != 0) |
| 769 | { |
| 770 | info->memory_error_func (status, pc + 4, info); |
| 771 | return -1; |
| 772 | } |
| 773 | |
| 774 | given |= (b[0] << 24) | (b[1] << 16); |
| 775 | } |
| 776 | else |
| 777 | { |
| 778 | given = (b[0] << 8) | b[1] | (b[2] << 24) | (b[3] << 16); |
| 779 | } |
| 780 | } |
| 781 | else |
| 782 | { |
| 783 | given = (b[0] << 24) | (b[1] << 16) | (b[2] << 8) | (b[3]); |
| 784 | } |
| 785 | |
| 786 | if (is_thumb) |
| 787 | { |
| 788 | status = print_insn_thumb (pc, info, given); |
| 789 | } |
| 790 | else |
| 791 | { |
| 792 | status = print_insn_arm (pc, info, given); |
| 793 | } |
| 794 | |
| 795 | return status; |
| 796 | } |
| 797 | |
| 798 | int |
| 799 | print_insn_little_arm (pc, info) |
| 800 | bfd_vma pc; |
| 801 | struct disassemble_info * info; |
| 802 | { |
| 803 | unsigned char b[4]; |
| 804 | long given; |
| 805 | int status; |
| 806 | coff_symbol_type *cs; |
| 807 | elf_symbol_type *es; |
| 808 | int is_thumb; |
| 809 | |
| 810 | is_thumb = false; |
| 811 | if (info->symbols != NULL) |
| 812 | { |
| 813 | if (bfd_asymbol_flavour (*info->symbols) == bfd_target_coff_flavour) |
| 814 | { |
| 815 | cs = coffsymbol (*info->symbols); |
| 816 | is_thumb = (cs->native->u.syment.n_sclass == C_THUMBEXT |
| 817 | || cs->native->u.syment.n_sclass == C_THUMBSTAT |
| 818 | || cs->native->u.syment.n_sclass == C_THUMBLABEL |
| 819 | || cs->native->u.syment.n_sclass == C_THUMBEXTFUNC |
| 820 | || cs->native->u.syment.n_sclass == C_THUMBSTATFUNC); |
| 821 | |
| 822 | } |
| 823 | else if (bfd_asymbol_flavour (*info->symbols) == bfd_target_elf_flavour) |
| 824 | { |
| 825 | es = *(elf_symbol_type **)(info->symbols); |
| 826 | is_thumb = ELF_ST_TYPE (es->internal_elf_sym.st_info) == |
| 827 | STT_ARM_TFUNC; |
| 828 | } |
| 829 | } |
| 830 | |
| 831 | info->bytes_per_chunk = 4; |
| 832 | info->display_endian = BFD_ENDIAN_LITTLE; |
| 833 | |
| 834 | status = (*info->read_memory_func) (pc, (bfd_byte *) &b[0], 4, info); |
| 835 | if (status != 0 && is_thumb) |
| 836 | { |
| 837 | info->bytes_per_chunk = 2; |
| 838 | |
| 839 | status = info->read_memory_func (pc, (bfd_byte *) b, 2, info); |
| 840 | b[3] = b[2] = 0; |
| 841 | } |
| 842 | if (status != 0) |
| 843 | { |
| 844 | (*info->memory_error_func) (status, pc, info); |
| 845 | return -1; |
| 846 | } |
| 847 | |
| 848 | given = (b[0]) | (b[1] << 8) | (b[2] << 16) | (b[3] << 24); |
| 849 | |
| 850 | if (is_thumb) |
| 851 | { |
| 852 | status = print_insn_thumb (pc, info, given); |
| 853 | } |
| 854 | else |
| 855 | { |
| 856 | status = print_insn_arm (pc, info, given); |
| 857 | } |
| 858 | |
| 859 | return status; |
| 860 | } |