| 1 | /* Instruction printing code for the ARM |
| 2 | Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003 |
| 3 | Free Software Foundation, Inc. |
| 4 | Contributed by Richard Earnshaw (rwe@pegasus.esprit.ec.org) |
| 5 | Modification by James G. Smith (jsmith@cygnus.co.uk) |
| 6 | |
| 7 | This file is part of libopcodes. |
| 8 | |
| 9 | This program is free software; you can redistribute it and/or modify it under |
| 10 | the terms of the GNU General Public License as published by the Free |
| 11 | Software Foundation; either version 2 of the License, or (at your option) |
| 12 | any later version. |
| 13 | |
| 14 | This program is distributed in the hope that it will be useful, but WITHOUT |
| 15 | ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 16 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for |
| 17 | more details. |
| 18 | |
| 19 | You should have received a copy of the GNU General Public License |
| 20 | along with this program; if not, write to the Free Software |
| 21 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ |
| 22 | |
| 23 | #include "sysdep.h" |
| 24 | #include "dis-asm.h" |
| 25 | #define DEFINE_TABLE |
| 26 | #include "arm-opc.h" |
| 27 | #include "coff/internal.h" |
| 28 | #include "libcoff.h" |
| 29 | #include "opintl.h" |
| 30 | #include "safe-ctype.h" |
| 31 | |
| 32 | /* FIXME: This shouldn't be done here. */ |
| 33 | #include "elf-bfd.h" |
| 34 | #include "elf/internal.h" |
| 35 | #include "elf/arm.h" |
| 36 | |
| 37 | #ifndef streq |
| 38 | #define streq(a,b) (strcmp ((a), (b)) == 0) |
| 39 | #endif |
| 40 | |
| 41 | #ifndef strneq |
| 42 | #define strneq(a,b,n) (strncmp ((a), (b), (n)) == 0) |
| 43 | #endif |
| 44 | |
| 45 | #ifndef NUM_ELEM |
| 46 | #define NUM_ELEM(a) (sizeof (a) / sizeof (a)[0]) |
| 47 | #endif |
| 48 | |
| 49 | static char * arm_conditional[] = |
| 50 | {"eq", "ne", "cs", "cc", "mi", "pl", "vs", "vc", |
| 51 | "hi", "ls", "ge", "lt", "gt", "le", "", "nv"}; |
| 52 | |
| 53 | typedef struct |
| 54 | { |
| 55 | const char * name; |
| 56 | const char * description; |
| 57 | const char * reg_names[16]; |
| 58 | } |
| 59 | arm_regname; |
| 60 | |
| 61 | static arm_regname regnames[] = |
| 62 | { |
| 63 | { "raw" , "Select raw register names", |
| 64 | { "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15"}}, |
| 65 | { "gcc", "Select register names used by GCC", |
| 66 | { "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", "r8", "r9", "sl", "fp", "ip", "sp", "lr", "pc" }}, |
| 67 | { "std", "Select register names used in ARM's ISA documentation", |
| 68 | { "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", "r8", "r9", "r10", "r11", "r12", "sp", "lr", "pc" }}, |
| 69 | { "apcs", "Select register names used in the APCS", |
| 70 | { "a1", "a2", "a3", "a4", "v1", "v2", "v3", "v4", "v5", "v6", "sl", "fp", "ip", "sp", "lr", "pc" }}, |
| 71 | { "atpcs", "Select register names used in the ATPCS", |
| 72 | { "a1", "a2", "a3", "a4", "v1", "v2", "v3", "v4", "v5", "v6", "v7", "v8", "IP", "SP", "LR", "PC" }}, |
| 73 | { "special-atpcs", "Select special register names used in the ATPCS", |
| 74 | { "a1", "a2", "a3", "a4", "v1", "v2", "v3", "WR", "v5", "SB", "SL", "FP", "IP", "SP", "LR", "PC" }}, |
| 75 | { "iwmmxt_regnames", "Select register names used on the Intel Wireless MMX technology coprocessor", |
| 76 | { "wr0", "wr1", "wr2", "wr3", "wr4", "wr5", "wr6", "wr7", "wr8", "wr9", "wr10", "wr11", "wr12", "wr13", "wr14", "wr15"}}, |
| 77 | { "iwmmxt_Cregnames", "Select control register names used on the Intel Wireless MMX technology coprocessor", |
| 78 | {"wcid", "wcon", "wcssf", "wcasf", "reserved", "reserved", "reserved", "reserved", "wcgr0", "wcgr1", "wcgr2", "wcgr3", "reserved", "reserved", "reserved", "reserved"}} |
| 79 | }; |
| 80 | |
| 81 | static char * iwmmxt_wwnames[] = |
| 82 | {"b", "h", "w", "d"}; |
| 83 | |
| 84 | static char * iwmmxt_wwssnames[] = |
| 85 | {"b", "bus", "b", "bss", |
| 86 | "h", "hus", "h", "hss", |
| 87 | "w", "wus", "w", "wss", |
| 88 | "d", "dus", "d", "dss" |
| 89 | }; |
| 90 | |
| 91 | /* Default to GCC register name set. */ |
| 92 | static unsigned int regname_selected = 1; |
| 93 | |
| 94 | #define NUM_ARM_REGNAMES NUM_ELEM (regnames) |
| 95 | #define arm_regnames regnames[regname_selected].reg_names |
| 96 | |
| 97 | static bfd_boolean force_thumb = FALSE; |
| 98 | |
| 99 | static char * arm_fp_const[] = |
| 100 | {"0.0", "1.0", "2.0", "3.0", "4.0", "5.0", "0.5", "10.0"}; |
| 101 | |
| 102 | static char * arm_shift[] = |
| 103 | {"lsl", "lsr", "asr", "ror"}; |
| 104 | \f |
| 105 | /* Forward declarations. */ |
| 106 | static void arm_decode_shift |
| 107 | PARAMS ((long, fprintf_ftype, void *)); |
| 108 | static int print_insn_arm |
| 109 | PARAMS ((bfd_vma, struct disassemble_info *, long)); |
| 110 | static int print_insn_thumb |
| 111 | PARAMS ((bfd_vma, struct disassemble_info *, long)); |
| 112 | static void parse_disassembler_options |
| 113 | PARAMS ((char *)); |
| 114 | static int print_insn |
| 115 | PARAMS ((bfd_vma, struct disassemble_info *, bfd_boolean)); |
| 116 | static int set_iwmmxt_regnames |
| 117 | PARAMS ((void)); |
| 118 | |
| 119 | int get_arm_regname_num_options |
| 120 | PARAMS ((void)); |
| 121 | int set_arm_regname_option |
| 122 | PARAMS ((int)); |
| 123 | int get_arm_regnames |
| 124 | PARAMS ((int, const char **, const char **, const char ***)); |
| 125 | \f |
| 126 | /* Functions. */ |
| 127 | int |
| 128 | get_arm_regname_num_options () |
| 129 | { |
| 130 | return NUM_ARM_REGNAMES; |
| 131 | } |
| 132 | |
| 133 | int |
| 134 | set_arm_regname_option (option) |
| 135 | int option; |
| 136 | { |
| 137 | int old = regname_selected; |
| 138 | regname_selected = option; |
| 139 | return old; |
| 140 | } |
| 141 | |
| 142 | int |
| 143 | get_arm_regnames (option, setname, setdescription, register_names) |
| 144 | int option; |
| 145 | const char **setname; |
| 146 | const char **setdescription; |
| 147 | const char ***register_names; |
| 148 | { |
| 149 | *setname = regnames[option].name; |
| 150 | *setdescription = regnames[option].description; |
| 151 | *register_names = regnames[option].reg_names; |
| 152 | return 16; |
| 153 | } |
| 154 | |
| 155 | static void |
| 156 | arm_decode_shift (given, func, stream) |
| 157 | long given; |
| 158 | fprintf_ftype func; |
| 159 | void * stream; |
| 160 | { |
| 161 | func (stream, "%s", arm_regnames[given & 0xf]); |
| 162 | |
| 163 | if ((given & 0xff0) != 0) |
| 164 | { |
| 165 | if ((given & 0x10) == 0) |
| 166 | { |
| 167 | int amount = (given & 0xf80) >> 7; |
| 168 | int shift = (given & 0x60) >> 5; |
| 169 | |
| 170 | if (amount == 0) |
| 171 | { |
| 172 | if (shift == 3) |
| 173 | { |
| 174 | func (stream, ", rrx"); |
| 175 | return; |
| 176 | } |
| 177 | |
| 178 | amount = 32; |
| 179 | } |
| 180 | |
| 181 | func (stream, ", %s #%d", arm_shift[shift], amount); |
| 182 | } |
| 183 | else |
| 184 | func (stream, ", %s %s", arm_shift[(given & 0x60) >> 5], |
| 185 | arm_regnames[(given & 0xf00) >> 8]); |
| 186 | } |
| 187 | } |
| 188 | |
| 189 | static int |
| 190 | set_iwmmxt_regnames () |
| 191 | { |
| 192 | const char * setname; |
| 193 | const char * setdesc; |
| 194 | const char ** regnames; |
| 195 | int iwmmxt_regnames = 0; |
| 196 | int num_regnames = get_arm_regname_num_options (); |
| 197 | |
| 198 | get_arm_regnames (iwmmxt_regnames, &setname, |
| 199 | &setdesc, ®names); |
| 200 | while ((strcmp ("iwmmxt_regnames", setname)) |
| 201 | && (iwmmxt_regnames < num_regnames)) |
| 202 | get_arm_regnames (++iwmmxt_regnames, &setname, &setdesc, ®names); |
| 203 | |
| 204 | return iwmmxt_regnames; |
| 205 | } |
| 206 | |
| 207 | /* Print one instruction from PC on INFO->STREAM. |
| 208 | Return the size of the instruction (always 4 on ARM). */ |
| 209 | |
| 210 | static int |
| 211 | print_insn_arm (pc, info, given) |
| 212 | bfd_vma pc; |
| 213 | struct disassemble_info *info; |
| 214 | long given; |
| 215 | { |
| 216 | const struct arm_opcode *insn; |
| 217 | void *stream = info->stream; |
| 218 | fprintf_ftype func = info->fprintf_func; |
| 219 | static int iwmmxt_regnames = 0; |
| 220 | |
| 221 | for (insn = arm_opcodes; insn->assembler; insn++) |
| 222 | { |
| 223 | if (insn->value == FIRST_IWMMXT_INSN |
| 224 | && info->mach != bfd_mach_arm_XScale |
| 225 | && info->mach != bfd_mach_arm_iWMMXt) |
| 226 | insn = insn + IWMMXT_INSN_COUNT; |
| 227 | |
| 228 | if ((given & insn->mask) == insn->value) |
| 229 | { |
| 230 | char * c; |
| 231 | |
| 232 | for (c = insn->assembler; *c; c++) |
| 233 | { |
| 234 | if (*c == '%') |
| 235 | { |
| 236 | switch (*++c) |
| 237 | { |
| 238 | case '%': |
| 239 | func (stream, "%%"); |
| 240 | break; |
| 241 | |
| 242 | case 'a': |
| 243 | if (((given & 0x000f0000) == 0x000f0000) |
| 244 | && ((given & 0x02000000) == 0)) |
| 245 | { |
| 246 | int offset = given & 0xfff; |
| 247 | |
| 248 | func (stream, "[pc"); |
| 249 | |
| 250 | if (given & 0x01000000) |
| 251 | { |
| 252 | if ((given & 0x00800000) == 0) |
| 253 | offset = - offset; |
| 254 | |
| 255 | /* Pre-indexed. */ |
| 256 | func (stream, ", #%d]", offset); |
| 257 | |
| 258 | offset += pc + 8; |
| 259 | |
| 260 | /* Cope with the possibility of write-back |
| 261 | being used. Probably a very dangerous thing |
| 262 | for the programmer to do, but who are we to |
| 263 | argue ? */ |
| 264 | if (given & 0x00200000) |
| 265 | func (stream, "!"); |
| 266 | } |
| 267 | else |
| 268 | { |
| 269 | /* Post indexed. */ |
| 270 | func (stream, "], #%d", offset); |
| 271 | |
| 272 | /* ie ignore the offset. */ |
| 273 | offset = pc + 8; |
| 274 | } |
| 275 | |
| 276 | func (stream, "\t; "); |
| 277 | info->print_address_func (offset, info); |
| 278 | } |
| 279 | else |
| 280 | { |
| 281 | func (stream, "[%s", |
| 282 | arm_regnames[(given >> 16) & 0xf]); |
| 283 | if ((given & 0x01000000) != 0) |
| 284 | { |
| 285 | if ((given & 0x02000000) == 0) |
| 286 | { |
| 287 | int offset = given & 0xfff; |
| 288 | if (offset) |
| 289 | func (stream, ", %s#%d", |
| 290 | (((given & 0x00800000) == 0) |
| 291 | ? "-" : ""), offset); |
| 292 | } |
| 293 | else |
| 294 | { |
| 295 | func (stream, ", %s", |
| 296 | (((given & 0x00800000) == 0) |
| 297 | ? "-" : "")); |
| 298 | arm_decode_shift (given, func, stream); |
| 299 | } |
| 300 | |
| 301 | func (stream, "]%s", |
| 302 | ((given & 0x00200000) != 0) ? "!" : ""); |
| 303 | } |
| 304 | else |
| 305 | { |
| 306 | if ((given & 0x02000000) == 0) |
| 307 | { |
| 308 | int offset = given & 0xfff; |
| 309 | if (offset) |
| 310 | func (stream, "], %s#%d", |
| 311 | (((given & 0x00800000) == 0) |
| 312 | ? "-" : ""), offset); |
| 313 | else |
| 314 | func (stream, "]"); |
| 315 | } |
| 316 | else |
| 317 | { |
| 318 | func (stream, "], %s", |
| 319 | (((given & 0x00800000) == 0) |
| 320 | ? "-" : "")); |
| 321 | arm_decode_shift (given, func, stream); |
| 322 | } |
| 323 | } |
| 324 | } |
| 325 | break; |
| 326 | |
| 327 | case 's': |
| 328 | if ((given & 0x004f0000) == 0x004f0000) |
| 329 | { |
| 330 | /* PC relative with immediate offset. */ |
| 331 | int offset = ((given & 0xf00) >> 4) | (given & 0xf); |
| 332 | |
| 333 | if ((given & 0x00800000) == 0) |
| 334 | offset = -offset; |
| 335 | |
| 336 | func (stream, "[pc, #%d]\t; ", offset); |
| 337 | |
| 338 | (*info->print_address_func) |
| 339 | (offset + pc + 8, info); |
| 340 | } |
| 341 | else |
| 342 | { |
| 343 | func (stream, "[%s", |
| 344 | arm_regnames[(given >> 16) & 0xf]); |
| 345 | if ((given & 0x01000000) != 0) |
| 346 | { |
| 347 | /* Pre-indexed. */ |
| 348 | if ((given & 0x00400000) == 0x00400000) |
| 349 | { |
| 350 | /* Immediate. */ |
| 351 | int offset = ((given & 0xf00) >> 4) | (given & 0xf); |
| 352 | if (offset) |
| 353 | func (stream, ", %s#%d", |
| 354 | (((given & 0x00800000) == 0) |
| 355 | ? "-" : ""), offset); |
| 356 | } |
| 357 | else |
| 358 | { |
| 359 | /* Register. */ |
| 360 | func (stream, ", %s%s", |
| 361 | (((given & 0x00800000) == 0) |
| 362 | ? "-" : ""), |
| 363 | arm_regnames[given & 0xf]); |
| 364 | } |
| 365 | |
| 366 | func (stream, "]%s", |
| 367 | ((given & 0x00200000) != 0) ? "!" : ""); |
| 368 | } |
| 369 | else |
| 370 | { |
| 371 | /* Post-indexed. */ |
| 372 | if ((given & 0x00400000) == 0x00400000) |
| 373 | { |
| 374 | /* Immediate. */ |
| 375 | int offset = ((given & 0xf00) >> 4) | (given & 0xf); |
| 376 | if (offset) |
| 377 | func (stream, "], %s#%d", |
| 378 | (((given & 0x00800000) == 0) |
| 379 | ? "-" : ""), offset); |
| 380 | else |
| 381 | func (stream, "]"); |
| 382 | } |
| 383 | else |
| 384 | { |
| 385 | /* Register. */ |
| 386 | func (stream, "], %s%s", |
| 387 | (((given & 0x00800000) == 0) |
| 388 | ? "-" : ""), |
| 389 | arm_regnames[given & 0xf]); |
| 390 | } |
| 391 | } |
| 392 | } |
| 393 | break; |
| 394 | |
| 395 | case 'b': |
| 396 | (*info->print_address_func) |
| 397 | (BDISP (given) * 4 + pc + 8, info); |
| 398 | break; |
| 399 | |
| 400 | case 'c': |
| 401 | func (stream, "%s", |
| 402 | arm_conditional [(given >> 28) & 0xf]); |
| 403 | break; |
| 404 | |
| 405 | case 'm': |
| 406 | { |
| 407 | int started = 0; |
| 408 | int reg; |
| 409 | |
| 410 | func (stream, "{"); |
| 411 | for (reg = 0; reg < 16; reg++) |
| 412 | if ((given & (1 << reg)) != 0) |
| 413 | { |
| 414 | if (started) |
| 415 | func (stream, ", "); |
| 416 | started = 1; |
| 417 | func (stream, "%s", arm_regnames[reg]); |
| 418 | } |
| 419 | func (stream, "}"); |
| 420 | } |
| 421 | break; |
| 422 | |
| 423 | case 'o': |
| 424 | if ((given & 0x02000000) != 0) |
| 425 | { |
| 426 | int rotate = (given & 0xf00) >> 7; |
| 427 | int immed = (given & 0xff); |
| 428 | immed = (((immed << (32 - rotate)) |
| 429 | | (immed >> rotate)) & 0xffffffff); |
| 430 | func (stream, "#%d\t; 0x%x", immed, immed); |
| 431 | } |
| 432 | else |
| 433 | arm_decode_shift (given, func, stream); |
| 434 | break; |
| 435 | |
| 436 | case 'p': |
| 437 | if ((given & 0x0000f000) == 0x0000f000) |
| 438 | func (stream, "p"); |
| 439 | break; |
| 440 | |
| 441 | case 't': |
| 442 | if ((given & 0x01200000) == 0x00200000) |
| 443 | func (stream, "t"); |
| 444 | break; |
| 445 | |
| 446 | case 'A': |
| 447 | func (stream, "[%s", arm_regnames [(given >> 16) & 0xf]); |
| 448 | if ((given & 0x01000000) != 0) |
| 449 | { |
| 450 | int offset = given & 0xff; |
| 451 | if (offset) |
| 452 | func (stream, ", %s#%d]%s", |
| 453 | ((given & 0x00800000) == 0 ? "-" : ""), |
| 454 | offset * 4, |
| 455 | ((given & 0x00200000) != 0 ? "!" : "")); |
| 456 | else |
| 457 | func (stream, "]"); |
| 458 | } |
| 459 | else |
| 460 | { |
| 461 | int offset = given & 0xff; |
| 462 | if (offset) |
| 463 | func (stream, "], %s#%d", |
| 464 | ((given & 0x00800000) == 0 ? "-" : ""), |
| 465 | offset * 4); |
| 466 | else |
| 467 | func (stream, "]"); |
| 468 | } |
| 469 | break; |
| 470 | |
| 471 | case 'B': |
| 472 | /* Print ARM V5 BLX(1) address: pc+25 bits. */ |
| 473 | { |
| 474 | bfd_vma address; |
| 475 | bfd_vma offset = 0; |
| 476 | |
| 477 | if (given & 0x00800000) |
| 478 | /* Is signed, hi bits should be ones. */ |
| 479 | offset = (-1) ^ 0x00ffffff; |
| 480 | |
| 481 | /* Offset is (SignExtend(offset field)<<2). */ |
| 482 | offset += given & 0x00ffffff; |
| 483 | offset <<= 2; |
| 484 | address = offset + pc + 8; |
| 485 | |
| 486 | if (given & 0x01000000) |
| 487 | /* H bit allows addressing to 2-byte boundaries. */ |
| 488 | address += 2; |
| 489 | |
| 490 | info->print_address_func (address, info); |
| 491 | } |
| 492 | break; |
| 493 | |
| 494 | case 'I': |
| 495 | /* Print a Cirrus/DSP shift immediate. */ |
| 496 | /* Immediates are 7bit signed ints with bits 0..3 in |
| 497 | bits 0..3 of opcode and bits 4..6 in bits 5..7 |
| 498 | of opcode. */ |
| 499 | { |
| 500 | int imm; |
| 501 | |
| 502 | imm = (given & 0xf) | ((given & 0xe0) >> 1); |
| 503 | |
| 504 | /* Is ``imm'' a negative number? */ |
| 505 | if (imm & 0x40) |
| 506 | imm |= (-1 << 7); |
| 507 | |
| 508 | func (stream, "%d", imm); |
| 509 | } |
| 510 | |
| 511 | break; |
| 512 | |
| 513 | case 'C': |
| 514 | func (stream, "_"); |
| 515 | if (given & 0x80000) |
| 516 | func (stream, "f"); |
| 517 | if (given & 0x40000) |
| 518 | func (stream, "s"); |
| 519 | if (given & 0x20000) |
| 520 | func (stream, "x"); |
| 521 | if (given & 0x10000) |
| 522 | func (stream, "c"); |
| 523 | break; |
| 524 | |
| 525 | case 'F': |
| 526 | switch (given & 0x00408000) |
| 527 | { |
| 528 | case 0: |
| 529 | func (stream, "4"); |
| 530 | break; |
| 531 | case 0x8000: |
| 532 | func (stream, "1"); |
| 533 | break; |
| 534 | case 0x00400000: |
| 535 | func (stream, "2"); |
| 536 | break; |
| 537 | default: |
| 538 | func (stream, "3"); |
| 539 | } |
| 540 | break; |
| 541 | |
| 542 | case 'P': |
| 543 | switch (given & 0x00080080) |
| 544 | { |
| 545 | case 0: |
| 546 | func (stream, "s"); |
| 547 | break; |
| 548 | case 0x80: |
| 549 | func (stream, "d"); |
| 550 | break; |
| 551 | case 0x00080000: |
| 552 | func (stream, "e"); |
| 553 | break; |
| 554 | default: |
| 555 | func (stream, _("<illegal precision>")); |
| 556 | break; |
| 557 | } |
| 558 | break; |
| 559 | case 'Q': |
| 560 | switch (given & 0x00408000) |
| 561 | { |
| 562 | case 0: |
| 563 | func (stream, "s"); |
| 564 | break; |
| 565 | case 0x8000: |
| 566 | func (stream, "d"); |
| 567 | break; |
| 568 | case 0x00400000: |
| 569 | func (stream, "e"); |
| 570 | break; |
| 571 | default: |
| 572 | func (stream, "p"); |
| 573 | break; |
| 574 | } |
| 575 | break; |
| 576 | case 'R': |
| 577 | switch (given & 0x60) |
| 578 | { |
| 579 | case 0: |
| 580 | break; |
| 581 | case 0x20: |
| 582 | func (stream, "p"); |
| 583 | break; |
| 584 | case 0x40: |
| 585 | func (stream, "m"); |
| 586 | break; |
| 587 | default: |
| 588 | func (stream, "z"); |
| 589 | break; |
| 590 | } |
| 591 | break; |
| 592 | |
| 593 | case '0': case '1': case '2': case '3': case '4': |
| 594 | case '5': case '6': case '7': case '8': case '9': |
| 595 | { |
| 596 | int bitstart = *c++ - '0'; |
| 597 | int bitend = 0; |
| 598 | while (*c >= '0' && *c <= '9') |
| 599 | bitstart = (bitstart * 10) + *c++ - '0'; |
| 600 | |
| 601 | switch (*c) |
| 602 | { |
| 603 | case '-': |
| 604 | c++; |
| 605 | |
| 606 | while (*c >= '0' && *c <= '9') |
| 607 | bitend = (bitend * 10) + *c++ - '0'; |
| 608 | |
| 609 | if (!bitend) |
| 610 | abort (); |
| 611 | |
| 612 | switch (*c) |
| 613 | { |
| 614 | case 'r': |
| 615 | { |
| 616 | long reg; |
| 617 | |
| 618 | reg = given >> bitstart; |
| 619 | reg &= (2 << (bitend - bitstart)) - 1; |
| 620 | |
| 621 | func (stream, "%s", arm_regnames[reg]); |
| 622 | } |
| 623 | break; |
| 624 | case 'd': |
| 625 | { |
| 626 | long reg; |
| 627 | |
| 628 | reg = given >> bitstart; |
| 629 | reg &= (2 << (bitend - bitstart)) - 1; |
| 630 | |
| 631 | func (stream, "%d", reg); |
| 632 | } |
| 633 | break; |
| 634 | case 'x': |
| 635 | { |
| 636 | long reg; |
| 637 | |
| 638 | reg = given >> bitstart; |
| 639 | reg &= (2 << (bitend - bitstart)) - 1; |
| 640 | |
| 641 | func (stream, "0x%08x", reg); |
| 642 | |
| 643 | /* Some SWI instructions have special |
| 644 | meanings. */ |
| 645 | if ((given & 0x0fffffff) == 0x0FF00000) |
| 646 | func (stream, "\t; IMB"); |
| 647 | else if ((given & 0x0fffffff) == 0x0FF00001) |
| 648 | func (stream, "\t; IMBRange"); |
| 649 | } |
| 650 | break; |
| 651 | case 'X': |
| 652 | { |
| 653 | long reg; |
| 654 | |
| 655 | reg = given >> bitstart; |
| 656 | reg &= (2 << (bitend - bitstart)) - 1; |
| 657 | |
| 658 | func (stream, "%01x", reg & 0xf); |
| 659 | } |
| 660 | break; |
| 661 | case 'f': |
| 662 | { |
| 663 | long reg; |
| 664 | |
| 665 | reg = given >> bitstart; |
| 666 | reg &= (2 << (bitend - bitstart)) - 1; |
| 667 | |
| 668 | if (reg > 7) |
| 669 | func (stream, "#%s", |
| 670 | arm_fp_const[reg & 7]); |
| 671 | else |
| 672 | func (stream, "f%d", reg); |
| 673 | } |
| 674 | break; |
| 675 | |
| 676 | case 'w': |
| 677 | { |
| 678 | long reg; |
| 679 | |
| 680 | if (bitstart != bitend) |
| 681 | { |
| 682 | reg = given >> bitstart; |
| 683 | reg &= (2 << (bitend - bitstart)) - 1; |
| 684 | if (bitend - bitstart == 1) |
| 685 | func (stream, "%s", iwmmxt_wwnames[reg]); |
| 686 | else |
| 687 | func (stream, "%s", iwmmxt_wwssnames[reg]); |
| 688 | } |
| 689 | else |
| 690 | { |
| 691 | reg = (((given >> 8) & 0x1) | |
| 692 | ((given >> 22) & 0x1)); |
| 693 | func (stream, "%s", iwmmxt_wwnames[reg]); |
| 694 | } |
| 695 | } |
| 696 | break; |
| 697 | |
| 698 | case 'g': |
| 699 | { |
| 700 | long reg; |
| 701 | int current_regnames; |
| 702 | |
| 703 | if (! iwmmxt_regnames) |
| 704 | iwmmxt_regnames = set_iwmmxt_regnames (); |
| 705 | current_regnames = set_arm_regname_option |
| 706 | (iwmmxt_regnames); |
| 707 | |
| 708 | reg = given >> bitstart; |
| 709 | reg &= (2 << (bitend - bitstart)) - 1; |
| 710 | func (stream, "%s", arm_regnames[reg]); |
| 711 | set_arm_regname_option (current_regnames); |
| 712 | } |
| 713 | break; |
| 714 | |
| 715 | case 'G': |
| 716 | { |
| 717 | long reg; |
| 718 | int current_regnames; |
| 719 | |
| 720 | if (! iwmmxt_regnames) |
| 721 | iwmmxt_regnames = set_iwmmxt_regnames (); |
| 722 | current_regnames = set_arm_regname_option |
| 723 | (iwmmxt_regnames + 1); |
| 724 | |
| 725 | reg = given >> bitstart; |
| 726 | reg &= (2 << (bitend - bitstart)) - 1; |
| 727 | func (stream, "%s", arm_regnames[reg]); |
| 728 | set_arm_regname_option (current_regnames); |
| 729 | } |
| 730 | break; |
| 731 | |
| 732 | default: |
| 733 | abort (); |
| 734 | } |
| 735 | break; |
| 736 | |
| 737 | case 'y': |
| 738 | case 'z': |
| 739 | { |
| 740 | int single = *c == 'y'; |
| 741 | int regno; |
| 742 | |
| 743 | switch (bitstart) |
| 744 | { |
| 745 | case 4: /* Sm pair */ |
| 746 | func (stream, "{"); |
| 747 | /* Fall through. */ |
| 748 | case 0: /* Sm, Dm */ |
| 749 | regno = given & 0x0000000f; |
| 750 | if (single) |
| 751 | { |
| 752 | regno <<= 1; |
| 753 | regno += (given >> 5) & 1; |
| 754 | } |
| 755 | break; |
| 756 | |
| 757 | case 1: /* Sd, Dd */ |
| 758 | regno = (given >> 12) & 0x0000000f; |
| 759 | if (single) |
| 760 | { |
| 761 | regno <<= 1; |
| 762 | regno += (given >> 22) & 1; |
| 763 | } |
| 764 | break; |
| 765 | |
| 766 | case 2: /* Sn, Dn */ |
| 767 | regno = (given >> 16) & 0x0000000f; |
| 768 | if (single) |
| 769 | { |
| 770 | regno <<= 1; |
| 771 | regno += (given >> 7) & 1; |
| 772 | } |
| 773 | break; |
| 774 | |
| 775 | case 3: /* List */ |
| 776 | func (stream, "{"); |
| 777 | regno = (given >> 12) & 0x0000000f; |
| 778 | if (single) |
| 779 | { |
| 780 | regno <<= 1; |
| 781 | regno += (given >> 22) & 1; |
| 782 | } |
| 783 | break; |
| 784 | |
| 785 | |
| 786 | default: |
| 787 | abort (); |
| 788 | } |
| 789 | |
| 790 | func (stream, "%c%d", single ? 's' : 'd', regno); |
| 791 | |
| 792 | if (bitstart == 3) |
| 793 | { |
| 794 | int count = given & 0xff; |
| 795 | |
| 796 | if (single == 0) |
| 797 | count >>= 1; |
| 798 | |
| 799 | if (--count) |
| 800 | { |
| 801 | func (stream, "-%c%d", |
| 802 | single ? 's' : 'd', |
| 803 | regno + count); |
| 804 | } |
| 805 | |
| 806 | func (stream, "}"); |
| 807 | } |
| 808 | else if (bitstart == 4) |
| 809 | func (stream, ", %c%d}", single ? 's' : 'd', |
| 810 | regno + 1); |
| 811 | |
| 812 | break; |
| 813 | } |
| 814 | |
| 815 | case '`': |
| 816 | c++; |
| 817 | if ((given & (1 << bitstart)) == 0) |
| 818 | func (stream, "%c", *c); |
| 819 | break; |
| 820 | case '\'': |
| 821 | c++; |
| 822 | if ((given & (1 << bitstart)) != 0) |
| 823 | func (stream, "%c", *c); |
| 824 | break; |
| 825 | case '?': |
| 826 | ++c; |
| 827 | if ((given & (1 << bitstart)) != 0) |
| 828 | func (stream, "%c", *c++); |
| 829 | else |
| 830 | func (stream, "%c", *++c); |
| 831 | break; |
| 832 | default: |
| 833 | abort (); |
| 834 | } |
| 835 | break; |
| 836 | |
| 837 | case 'L': |
| 838 | switch (given & 0x00400100) |
| 839 | { |
| 840 | case 0x00000000: func (stream, "b"); break; |
| 841 | case 0x00400000: func (stream, "h"); break; |
| 842 | case 0x00000100: func (stream, "w"); break; |
| 843 | case 0x00400100: func (stream, "d"); break; |
| 844 | default: |
| 845 | break; |
| 846 | } |
| 847 | break; |
| 848 | |
| 849 | case 'Z': |
| 850 | { |
| 851 | int value; |
| 852 | /* given (20, 23) | given (0, 3) */ |
| 853 | value = ((given >> 16) & 0xf0) | (given & 0xf); |
| 854 | func (stream, "%d", value); |
| 855 | } |
| 856 | break; |
| 857 | |
| 858 | case 'l': |
| 859 | /* This is like the 'A' operator, except that if |
| 860 | the width field "M" is zero, then the offset is |
| 861 | *not* multiplied by four. */ |
| 862 | { |
| 863 | int offset = given & 0xff; |
| 864 | int multiplier = (given & 0x00000100) ? 4 : 1; |
| 865 | |
| 866 | func (stream, "[%s", arm_regnames [(given >> 16) & 0xf]); |
| 867 | |
| 868 | if (offset) |
| 869 | { |
| 870 | if ((given & 0x01000000) != 0) |
| 871 | func (stream, ", %s#%d]%s", |
| 872 | ((given & 0x00800000) == 0 ? "-" : ""), |
| 873 | offset * multiplier, |
| 874 | ((given & 0x00200000) != 0 ? "!" : "")); |
| 875 | else |
| 876 | func (stream, "], %s#%d", |
| 877 | ((given & 0x00800000) == 0 ? "-" : ""), |
| 878 | offset * multiplier); |
| 879 | } |
| 880 | else |
| 881 | func (stream, "]"); |
| 882 | } |
| 883 | break; |
| 884 | |
| 885 | default: |
| 886 | abort (); |
| 887 | } |
| 888 | } |
| 889 | } |
| 890 | else |
| 891 | func (stream, "%c", *c); |
| 892 | } |
| 893 | return 4; |
| 894 | } |
| 895 | } |
| 896 | abort (); |
| 897 | } |
| 898 | |
| 899 | /* Print one instruction from PC on INFO->STREAM. |
| 900 | Return the size of the instruction. */ |
| 901 | |
| 902 | static int |
| 903 | print_insn_thumb (pc, info, given) |
| 904 | bfd_vma pc; |
| 905 | struct disassemble_info *info; |
| 906 | long given; |
| 907 | { |
| 908 | const struct thumb_opcode *insn; |
| 909 | void *stream = info->stream; |
| 910 | fprintf_ftype func = info->fprintf_func; |
| 911 | |
| 912 | for (insn = thumb_opcodes; insn->assembler; insn++) |
| 913 | { |
| 914 | if ((given & insn->mask) == insn->value) |
| 915 | { |
| 916 | char * c = insn->assembler; |
| 917 | |
| 918 | /* Special processing for Thumb 2 instruction BL sequence: */ |
| 919 | if (!*c) /* Check for empty (not NULL) assembler string. */ |
| 920 | { |
| 921 | long offset; |
| 922 | |
| 923 | info->bytes_per_chunk = 4; |
| 924 | info->bytes_per_line = 4; |
| 925 | |
| 926 | offset = BDISP23 (given); |
| 927 | offset = offset * 2 + pc + 4; |
| 928 | |
| 929 | if ((given & 0x10000000) == 0) |
| 930 | { |
| 931 | func (stream, "blx\t"); |
| 932 | offset &= 0xfffffffc; |
| 933 | } |
| 934 | else |
| 935 | func (stream, "bl\t"); |
| 936 | |
| 937 | info->print_address_func (offset, info); |
| 938 | return 4; |
| 939 | } |
| 940 | else |
| 941 | { |
| 942 | info->bytes_per_chunk = 2; |
| 943 | info->bytes_per_line = 4; |
| 944 | |
| 945 | given &= 0xffff; |
| 946 | |
| 947 | for (; *c; c++) |
| 948 | { |
| 949 | if (*c == '%') |
| 950 | { |
| 951 | int domaskpc = 0; |
| 952 | int domasklr = 0; |
| 953 | |
| 954 | switch (*++c) |
| 955 | { |
| 956 | case '%': |
| 957 | func (stream, "%%"); |
| 958 | break; |
| 959 | |
| 960 | case 'S': |
| 961 | { |
| 962 | long reg; |
| 963 | |
| 964 | reg = (given >> 3) & 0x7; |
| 965 | if (given & (1 << 6)) |
| 966 | reg += 8; |
| 967 | |
| 968 | func (stream, "%s", arm_regnames[reg]); |
| 969 | } |
| 970 | break; |
| 971 | |
| 972 | case 'D': |
| 973 | { |
| 974 | long reg; |
| 975 | |
| 976 | reg = given & 0x7; |
| 977 | if (given & (1 << 7)) |
| 978 | reg += 8; |
| 979 | |
| 980 | func (stream, "%s", arm_regnames[reg]); |
| 981 | } |
| 982 | break; |
| 983 | |
| 984 | case 'T': |
| 985 | func (stream, "%s", |
| 986 | arm_conditional [(given >> 8) & 0xf]); |
| 987 | break; |
| 988 | |
| 989 | case 'N': |
| 990 | if (given & (1 << 8)) |
| 991 | domasklr = 1; |
| 992 | /* Fall through. */ |
| 993 | case 'O': |
| 994 | if (*c == 'O' && (given & (1 << 8))) |
| 995 | domaskpc = 1; |
| 996 | /* Fall through. */ |
| 997 | case 'M': |
| 998 | { |
| 999 | int started = 0; |
| 1000 | int reg; |
| 1001 | |
| 1002 | func (stream, "{"); |
| 1003 | |
| 1004 | /* It would be nice if we could spot |
| 1005 | ranges, and generate the rS-rE format: */ |
| 1006 | for (reg = 0; (reg < 8); reg++) |
| 1007 | if ((given & (1 << reg)) != 0) |
| 1008 | { |
| 1009 | if (started) |
| 1010 | func (stream, ", "); |
| 1011 | started = 1; |
| 1012 | func (stream, "%s", arm_regnames[reg]); |
| 1013 | } |
| 1014 | |
| 1015 | if (domasklr) |
| 1016 | { |
| 1017 | if (started) |
| 1018 | func (stream, ", "); |
| 1019 | started = 1; |
| 1020 | func (stream, arm_regnames[14] /* "lr" */); |
| 1021 | } |
| 1022 | |
| 1023 | if (domaskpc) |
| 1024 | { |
| 1025 | if (started) |
| 1026 | func (stream, ", "); |
| 1027 | func (stream, arm_regnames[15] /* "pc" */); |
| 1028 | } |
| 1029 | |
| 1030 | func (stream, "}"); |
| 1031 | } |
| 1032 | break; |
| 1033 | |
| 1034 | |
| 1035 | case '0': case '1': case '2': case '3': case '4': |
| 1036 | case '5': case '6': case '7': case '8': case '9': |
| 1037 | { |
| 1038 | int bitstart = *c++ - '0'; |
| 1039 | int bitend = 0; |
| 1040 | |
| 1041 | while (*c >= '0' && *c <= '9') |
| 1042 | bitstart = (bitstart * 10) + *c++ - '0'; |
| 1043 | |
| 1044 | switch (*c) |
| 1045 | { |
| 1046 | case '-': |
| 1047 | { |
| 1048 | long reg; |
| 1049 | |
| 1050 | c++; |
| 1051 | while (*c >= '0' && *c <= '9') |
| 1052 | bitend = (bitend * 10) + *c++ - '0'; |
| 1053 | if (!bitend) |
| 1054 | abort (); |
| 1055 | reg = given >> bitstart; |
| 1056 | reg &= (2 << (bitend - bitstart)) - 1; |
| 1057 | switch (*c) |
| 1058 | { |
| 1059 | case 'r': |
| 1060 | func (stream, "%s", arm_regnames[reg]); |
| 1061 | break; |
| 1062 | |
| 1063 | case 'd': |
| 1064 | func (stream, "%d", reg); |
| 1065 | break; |
| 1066 | |
| 1067 | case 'H': |
| 1068 | func (stream, "%d", reg << 1); |
| 1069 | break; |
| 1070 | |
| 1071 | case 'W': |
| 1072 | func (stream, "%d", reg << 2); |
| 1073 | break; |
| 1074 | |
| 1075 | case 'a': |
| 1076 | /* PC-relative address -- the bottom two |
| 1077 | bits of the address are dropped |
| 1078 | before the calculation. */ |
| 1079 | info->print_address_func |
| 1080 | (((pc + 4) & ~3) + (reg << 2), info); |
| 1081 | break; |
| 1082 | |
| 1083 | case 'x': |
| 1084 | func (stream, "0x%04x", reg); |
| 1085 | break; |
| 1086 | |
| 1087 | case 'I': |
| 1088 | reg = ((reg ^ (1 << bitend)) - (1 << bitend)); |
| 1089 | func (stream, "%d", reg); |
| 1090 | break; |
| 1091 | |
| 1092 | case 'B': |
| 1093 | reg = ((reg ^ (1 << bitend)) - (1 << bitend)); |
| 1094 | (*info->print_address_func) |
| 1095 | (reg * 2 + pc + 4, info); |
| 1096 | break; |
| 1097 | |
| 1098 | default: |
| 1099 | abort (); |
| 1100 | } |
| 1101 | } |
| 1102 | break; |
| 1103 | |
| 1104 | case '\'': |
| 1105 | c++; |
| 1106 | if ((given & (1 << bitstart)) != 0) |
| 1107 | func (stream, "%c", *c); |
| 1108 | break; |
| 1109 | |
| 1110 | case '?': |
| 1111 | ++c; |
| 1112 | if ((given & (1 << bitstart)) != 0) |
| 1113 | func (stream, "%c", *c++); |
| 1114 | else |
| 1115 | func (stream, "%c", *++c); |
| 1116 | break; |
| 1117 | |
| 1118 | default: |
| 1119 | abort (); |
| 1120 | } |
| 1121 | } |
| 1122 | break; |
| 1123 | |
| 1124 | default: |
| 1125 | abort (); |
| 1126 | } |
| 1127 | } |
| 1128 | else |
| 1129 | func (stream, "%c", *c); |
| 1130 | } |
| 1131 | } |
| 1132 | return 2; |
| 1133 | } |
| 1134 | } |
| 1135 | |
| 1136 | /* No match. */ |
| 1137 | abort (); |
| 1138 | } |
| 1139 | |
| 1140 | /* Parse an individual disassembler option. */ |
| 1141 | |
| 1142 | void |
| 1143 | parse_arm_disassembler_option (option) |
| 1144 | char * option; |
| 1145 | { |
| 1146 | if (option == NULL) |
| 1147 | return; |
| 1148 | |
| 1149 | if (strneq (option, "reg-names-", 10)) |
| 1150 | { |
| 1151 | int i; |
| 1152 | |
| 1153 | option += 10; |
| 1154 | |
| 1155 | for (i = NUM_ARM_REGNAMES; i--;) |
| 1156 | if (strneq (option, regnames[i].name, strlen (regnames[i].name))) |
| 1157 | { |
| 1158 | regname_selected = i; |
| 1159 | break; |
| 1160 | } |
| 1161 | |
| 1162 | if (i < 0) |
| 1163 | /* XXX - should break 'option' at following delimiter. */ |
| 1164 | fprintf (stderr, _("Unrecognised register name set: %s\n"), option); |
| 1165 | } |
| 1166 | else if (strneq (option, "force-thumb", 11)) |
| 1167 | force_thumb = 1; |
| 1168 | else if (strneq (option, "no-force-thumb", 14)) |
| 1169 | force_thumb = 0; |
| 1170 | else |
| 1171 | /* XXX - should break 'option' at following delimiter. */ |
| 1172 | fprintf (stderr, _("Unrecognised disassembler option: %s\n"), option); |
| 1173 | |
| 1174 | return; |
| 1175 | } |
| 1176 | |
| 1177 | /* Parse the string of disassembler options, spliting it at whitespaces |
| 1178 | or commas. (Whitespace separators supported for backwards compatibility). */ |
| 1179 | |
| 1180 | static void |
| 1181 | parse_disassembler_options (options) |
| 1182 | char * options; |
| 1183 | { |
| 1184 | if (options == NULL) |
| 1185 | return; |
| 1186 | |
| 1187 | while (*options) |
| 1188 | { |
| 1189 | parse_arm_disassembler_option (options); |
| 1190 | |
| 1191 | /* Skip forward to next seperator. */ |
| 1192 | while ((*options) && (! ISSPACE (*options)) && (*options != ',')) |
| 1193 | ++ options; |
| 1194 | /* Skip forward past seperators. */ |
| 1195 | while (ISSPACE (*options) || (*options == ',')) |
| 1196 | ++ options; |
| 1197 | } |
| 1198 | } |
| 1199 | |
| 1200 | /* NOTE: There are no checks in these routines that |
| 1201 | the relevant number of data bytes exist. */ |
| 1202 | |
| 1203 | static int |
| 1204 | print_insn (pc, info, little) |
| 1205 | bfd_vma pc; |
| 1206 | struct disassemble_info * info; |
| 1207 | bfd_boolean little; |
| 1208 | { |
| 1209 | unsigned char b[4]; |
| 1210 | long given; |
| 1211 | int status; |
| 1212 | int is_thumb; |
| 1213 | |
| 1214 | if (info->disassembler_options) |
| 1215 | { |
| 1216 | parse_disassembler_options (info->disassembler_options); |
| 1217 | |
| 1218 | /* To avoid repeated parsing of these options, we remove them here. */ |
| 1219 | info->disassembler_options = NULL; |
| 1220 | } |
| 1221 | |
| 1222 | is_thumb = force_thumb; |
| 1223 | |
| 1224 | if (!is_thumb && info->symbols != NULL) |
| 1225 | { |
| 1226 | if (bfd_asymbol_flavour (*info->symbols) == bfd_target_coff_flavour) |
| 1227 | { |
| 1228 | coff_symbol_type * cs; |
| 1229 | |
| 1230 | cs = coffsymbol (*info->symbols); |
| 1231 | is_thumb = ( cs->native->u.syment.n_sclass == C_THUMBEXT |
| 1232 | || cs->native->u.syment.n_sclass == C_THUMBSTAT |
| 1233 | || cs->native->u.syment.n_sclass == C_THUMBLABEL |
| 1234 | || cs->native->u.syment.n_sclass == C_THUMBEXTFUNC |
| 1235 | || cs->native->u.syment.n_sclass == C_THUMBSTATFUNC); |
| 1236 | } |
| 1237 | else if (bfd_asymbol_flavour (*info->symbols) == bfd_target_elf_flavour) |
| 1238 | { |
| 1239 | elf_symbol_type * es; |
| 1240 | unsigned int type; |
| 1241 | |
| 1242 | es = *(elf_symbol_type **)(info->symbols); |
| 1243 | type = ELF_ST_TYPE (es->internal_elf_sym.st_info); |
| 1244 | |
| 1245 | is_thumb = (type == STT_ARM_TFUNC) || (type == STT_ARM_16BIT); |
| 1246 | } |
| 1247 | } |
| 1248 | |
| 1249 | info->bytes_per_chunk = 4; |
| 1250 | info->display_endian = little ? BFD_ENDIAN_LITTLE : BFD_ENDIAN_BIG; |
| 1251 | |
| 1252 | if (little) |
| 1253 | { |
| 1254 | status = info->read_memory_func (pc, (bfd_byte *) &b[0], 4, info); |
| 1255 | if (status != 0 && is_thumb) |
| 1256 | { |
| 1257 | info->bytes_per_chunk = 2; |
| 1258 | |
| 1259 | status = info->read_memory_func (pc, (bfd_byte *) b, 2, info); |
| 1260 | b[3] = b[2] = 0; |
| 1261 | } |
| 1262 | |
| 1263 | if (status != 0) |
| 1264 | { |
| 1265 | info->memory_error_func (status, pc, info); |
| 1266 | return -1; |
| 1267 | } |
| 1268 | |
| 1269 | given = (b[0]) | (b[1] << 8) | (b[2] << 16) | (b[3] << 24); |
| 1270 | } |
| 1271 | else |
| 1272 | { |
| 1273 | status = info->read_memory_func |
| 1274 | (pc & ~ 0x3, (bfd_byte *) &b[0], 4, info); |
| 1275 | if (status != 0) |
| 1276 | { |
| 1277 | info->memory_error_func (status, pc, info); |
| 1278 | return -1; |
| 1279 | } |
| 1280 | |
| 1281 | if (is_thumb) |
| 1282 | { |
| 1283 | if (pc & 0x2) |
| 1284 | { |
| 1285 | given = (b[2] << 8) | b[3]; |
| 1286 | |
| 1287 | status = info->read_memory_func |
| 1288 | ((pc + 4) & ~ 0x3, (bfd_byte *) b, 4, info); |
| 1289 | if (status != 0) |
| 1290 | { |
| 1291 | info->memory_error_func (status, pc + 4, info); |
| 1292 | return -1; |
| 1293 | } |
| 1294 | |
| 1295 | given |= (b[0] << 24) | (b[1] << 16); |
| 1296 | } |
| 1297 | else |
| 1298 | given = (b[0] << 8) | b[1] | (b[2] << 24) | (b[3] << 16); |
| 1299 | } |
| 1300 | else |
| 1301 | given = (b[0] << 24) | (b[1] << 16) | (b[2] << 8) | (b[3]); |
| 1302 | } |
| 1303 | |
| 1304 | if (info->flags & INSN_HAS_RELOC) |
| 1305 | /* If the instruction has a reloc associated with it, then |
| 1306 | the offset field in the instruction will actually be the |
| 1307 | addend for the reloc. (We are using REL type relocs). |
| 1308 | In such cases, we can ignore the pc when computing |
| 1309 | addresses, since the addend is not currently pc-relative. */ |
| 1310 | pc = 0; |
| 1311 | |
| 1312 | if (is_thumb) |
| 1313 | status = print_insn_thumb (pc, info, given); |
| 1314 | else |
| 1315 | status = print_insn_arm (pc, info, given); |
| 1316 | |
| 1317 | return status; |
| 1318 | } |
| 1319 | |
| 1320 | int |
| 1321 | print_insn_big_arm (pc, info) |
| 1322 | bfd_vma pc; |
| 1323 | struct disassemble_info * info; |
| 1324 | { |
| 1325 | return print_insn (pc, info, FALSE); |
| 1326 | } |
| 1327 | |
| 1328 | int |
| 1329 | print_insn_little_arm (pc, info) |
| 1330 | bfd_vma pc; |
| 1331 | struct disassemble_info * info; |
| 1332 | { |
| 1333 | return print_insn (pc, info, TRUE); |
| 1334 | } |
| 1335 | |
| 1336 | void |
| 1337 | print_arm_disassembler_options (FILE * stream) |
| 1338 | { |
| 1339 | int i; |
| 1340 | |
| 1341 | fprintf (stream, _("\n\ |
| 1342 | The following ARM specific disassembler options are supported for use with\n\ |
| 1343 | the -M switch:\n")); |
| 1344 | |
| 1345 | for (i = NUM_ARM_REGNAMES; i--;) |
| 1346 | fprintf (stream, " reg-names-%s %*c%s\n", |
| 1347 | regnames[i].name, |
| 1348 | (int)(14 - strlen (regnames[i].name)), ' ', |
| 1349 | regnames[i].description); |
| 1350 | |
| 1351 | fprintf (stream, " force-thumb Assume all insns are Thumb insns\n"); |
| 1352 | fprintf (stream, " no-force-thumb Examine preceeding label to determine an insn's type\n\n"); |
| 1353 | } |