| 1 | /* Disassemble MN10300 instructions. |
| 2 | Copyright (C) 1996-2015 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, or (at your option) |
| 9 | any later version. |
| 10 | |
| 11 | It is distributed in the hope that it will be useful, but WITHOUT |
| 12 | ANY WARRANTY; without even the implied warranty of MERCHANTABILITY |
| 13 | or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public |
| 14 | 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 <stdio.h> |
| 23 | #include "opcode/mn10300.h" |
| 24 | #include "dis-asm.h" |
| 25 | #include "opintl.h" |
| 26 | |
| 27 | #define HAVE_AM33_2 (info->mach == AM33_2) |
| 28 | #define HAVE_AM33 (info->mach == AM33 || HAVE_AM33_2) |
| 29 | #define HAVE_AM30 (info->mach == AM30) |
| 30 | |
| 31 | static void |
| 32 | disassemble (bfd_vma memaddr, |
| 33 | struct disassemble_info *info, |
| 34 | unsigned long insn, |
| 35 | unsigned int size) |
| 36 | { |
| 37 | struct mn10300_opcode *op = (struct mn10300_opcode *) mn10300_opcodes; |
| 38 | const struct mn10300_operand *operand; |
| 39 | bfd_byte buffer[4]; |
| 40 | unsigned long extension = 0; |
| 41 | int status, match = 0; |
| 42 | |
| 43 | /* Find the opcode. */ |
| 44 | while (op->name) |
| 45 | { |
| 46 | int mysize, extra_shift; |
| 47 | |
| 48 | if (op->format == FMT_S0) |
| 49 | mysize = 1; |
| 50 | else if (op->format == FMT_S1 |
| 51 | || op->format == FMT_D0) |
| 52 | mysize = 2; |
| 53 | else if (op->format == FMT_S2 |
| 54 | || op->format == FMT_D1) |
| 55 | mysize = 3; |
| 56 | else if (op->format == FMT_S4) |
| 57 | mysize = 5; |
| 58 | else if (op->format == FMT_D2) |
| 59 | mysize = 4; |
| 60 | else if (op->format == FMT_D3) |
| 61 | mysize = 5; |
| 62 | else if (op->format == FMT_D4) |
| 63 | mysize = 6; |
| 64 | else if (op->format == FMT_D6) |
| 65 | mysize = 3; |
| 66 | else if (op->format == FMT_D7 || op->format == FMT_D10) |
| 67 | mysize = 4; |
| 68 | else if (op->format == FMT_D8) |
| 69 | mysize = 6; |
| 70 | else if (op->format == FMT_D9) |
| 71 | mysize = 7; |
| 72 | else |
| 73 | mysize = 7; |
| 74 | |
| 75 | if ((op->mask & insn) == op->opcode |
| 76 | && size == (unsigned int) mysize |
| 77 | && (op->machine == 0 |
| 78 | || (op->machine == AM33_2 && HAVE_AM33_2) |
| 79 | || (op->machine == AM33 && HAVE_AM33) |
| 80 | || (op->machine == AM30 && HAVE_AM30))) |
| 81 | { |
| 82 | const unsigned char *opindex_ptr; |
| 83 | unsigned int nocomma; |
| 84 | int paren = 0; |
| 85 | |
| 86 | if (op->format == FMT_D1 || op->format == FMT_S1) |
| 87 | extra_shift = 8; |
| 88 | else if (op->format == FMT_D2 || op->format == FMT_D4 |
| 89 | || op->format == FMT_S2 || op->format == FMT_S4 |
| 90 | || op->format == FMT_S6 || op->format == FMT_D5) |
| 91 | extra_shift = 16; |
| 92 | else if (op->format == FMT_D7 |
| 93 | || op->format == FMT_D8 |
| 94 | || op->format == FMT_D9) |
| 95 | extra_shift = 8; |
| 96 | else |
| 97 | extra_shift = 0; |
| 98 | |
| 99 | if (size == 1 || size == 2) |
| 100 | extension = 0; |
| 101 | |
| 102 | else if (size == 3 |
| 103 | && (op->format == FMT_D1 |
| 104 | || op->opcode == 0xdf0000 |
| 105 | || op->opcode == 0xde0000)) |
| 106 | extension = 0; |
| 107 | |
| 108 | else if (size == 3 |
| 109 | && op->format == FMT_D6) |
| 110 | extension = 0; |
| 111 | |
| 112 | else if (size == 3) |
| 113 | { |
| 114 | insn &= 0xff0000; |
| 115 | status = (*info->read_memory_func) (memaddr + 1, buffer, 2, info); |
| 116 | if (status != 0) |
| 117 | { |
| 118 | (*info->memory_error_func) (status, memaddr, info); |
| 119 | return; |
| 120 | } |
| 121 | |
| 122 | insn |= bfd_getl16 (buffer); |
| 123 | extension = 0; |
| 124 | } |
| 125 | else if (size == 4 |
| 126 | && (op->opcode == 0xfaf80000 |
| 127 | || op->opcode == 0xfaf00000 |
| 128 | || op->opcode == 0xfaf40000)) |
| 129 | extension = 0; |
| 130 | |
| 131 | else if (size == 4 |
| 132 | && (op->format == FMT_D7 |
| 133 | || op->format == FMT_D10)) |
| 134 | extension = 0; |
| 135 | |
| 136 | else if (size == 4) |
| 137 | { |
| 138 | insn &= 0xffff0000; |
| 139 | status = (*info->read_memory_func) (memaddr + 2, buffer, 2, info); |
| 140 | if (status != 0) |
| 141 | { |
| 142 | (*info->memory_error_func) (status, memaddr, info); |
| 143 | return; |
| 144 | } |
| 145 | |
| 146 | insn |= bfd_getl16 (buffer); |
| 147 | extension = 0; |
| 148 | } |
| 149 | else if (size == 5 && op->opcode == 0xdc000000) |
| 150 | { |
| 151 | unsigned long temp = 0; |
| 152 | |
| 153 | status = (*info->read_memory_func) (memaddr + 1, buffer, 4, info); |
| 154 | if (status != 0) |
| 155 | { |
| 156 | (*info->memory_error_func) (status, memaddr, info); |
| 157 | return; |
| 158 | } |
| 159 | temp |= bfd_getl32 (buffer); |
| 160 | |
| 161 | insn &= 0xff000000; |
| 162 | insn |= (temp & 0xffffff00) >> 8; |
| 163 | extension = temp & 0xff; |
| 164 | } |
| 165 | else if (size == 5 && op->format == FMT_D3) |
| 166 | { |
| 167 | status = (*info->read_memory_func) (memaddr + 2, buffer, 2, info); |
| 168 | if (status != 0) |
| 169 | { |
| 170 | (*info->memory_error_func) (status, memaddr, info); |
| 171 | return; |
| 172 | } |
| 173 | insn &= 0xffff0000; |
| 174 | insn |= bfd_getl16 (buffer); |
| 175 | |
| 176 | status = (*info->read_memory_func) (memaddr + 4, buffer, 1, info); |
| 177 | if (status != 0) |
| 178 | { |
| 179 | (*info->memory_error_func) (status, memaddr, info); |
| 180 | return; |
| 181 | } |
| 182 | extension = *(unsigned char *) buffer; |
| 183 | } |
| 184 | else if (size == 5) |
| 185 | { |
| 186 | unsigned long temp = 0; |
| 187 | |
| 188 | status = (*info->read_memory_func) (memaddr + 1, buffer, 2, info); |
| 189 | if (status != 0) |
| 190 | { |
| 191 | (*info->memory_error_func) (status, memaddr, info); |
| 192 | return; |
| 193 | } |
| 194 | temp |= bfd_getl16 (buffer); |
| 195 | |
| 196 | insn &= 0xff0000ff; |
| 197 | insn |= temp << 8; |
| 198 | |
| 199 | status = (*info->read_memory_func) (memaddr + 4, buffer, 1, info); |
| 200 | if (status != 0) |
| 201 | { |
| 202 | (*info->memory_error_func) (status, memaddr, info); |
| 203 | return; |
| 204 | } |
| 205 | extension = *(unsigned char *) buffer; |
| 206 | } |
| 207 | else if (size == 6 && op->format == FMT_D8) |
| 208 | { |
| 209 | insn &= 0xffffff00; |
| 210 | status = (*info->read_memory_func) (memaddr + 5, buffer, 1, info); |
| 211 | if (status != 0) |
| 212 | { |
| 213 | (*info->memory_error_func) (status, memaddr, info); |
| 214 | return; |
| 215 | } |
| 216 | insn |= *(unsigned char *) buffer; |
| 217 | |
| 218 | status = (*info->read_memory_func) (memaddr + 3, buffer, 2, info); |
| 219 | if (status != 0) |
| 220 | { |
| 221 | (*info->memory_error_func) (status, memaddr, info); |
| 222 | return; |
| 223 | } |
| 224 | extension = bfd_getl16 (buffer); |
| 225 | } |
| 226 | else if (size == 6) |
| 227 | { |
| 228 | unsigned long temp = 0; |
| 229 | |
| 230 | status = (*info->read_memory_func) (memaddr + 2, buffer, 4, info); |
| 231 | if (status != 0) |
| 232 | { |
| 233 | (*info->memory_error_func) (status, memaddr, info); |
| 234 | return; |
| 235 | } |
| 236 | temp |= bfd_getl32 (buffer); |
| 237 | |
| 238 | insn &= 0xffff0000; |
| 239 | insn |= (temp >> 16) & 0xffff; |
| 240 | extension = temp & 0xffff; |
| 241 | } |
| 242 | else if (size == 7 && op->format == FMT_D9) |
| 243 | { |
| 244 | insn &= 0xffffff00; |
| 245 | status = (*info->read_memory_func) (memaddr + 3, buffer, 4, info); |
| 246 | if (status != 0) |
| 247 | { |
| 248 | (*info->memory_error_func) (status, memaddr, info); |
| 249 | return; |
| 250 | } |
| 251 | extension = bfd_getl32 (buffer); |
| 252 | insn |= (extension & 0xff000000) >> 24; |
| 253 | extension &= 0xffffff; |
| 254 | } |
| 255 | else if (size == 7 && op->opcode == 0xdd000000) |
| 256 | { |
| 257 | unsigned long temp = 0; |
| 258 | |
| 259 | status = (*info->read_memory_func) (memaddr + 1, buffer, 4, info); |
| 260 | if (status != 0) |
| 261 | { |
| 262 | (*info->memory_error_func) (status, memaddr, info); |
| 263 | return; |
| 264 | } |
| 265 | temp |= bfd_getl32 (buffer); |
| 266 | |
| 267 | insn &= 0xff000000; |
| 268 | insn |= (temp >> 8) & 0xffffff; |
| 269 | extension = (temp & 0xff) << 16; |
| 270 | |
| 271 | status = (*info->read_memory_func) (memaddr + 5, buffer, 2, info); |
| 272 | if (status != 0) |
| 273 | { |
| 274 | (*info->memory_error_func) (status, memaddr, info); |
| 275 | return; |
| 276 | } |
| 277 | extension |= bfd_getb16 (buffer); |
| 278 | } |
| 279 | else if (size == 7) |
| 280 | { |
| 281 | unsigned long temp = 0; |
| 282 | |
| 283 | status = (*info->read_memory_func) (memaddr + 2, buffer, 4, info); |
| 284 | if (status != 0) |
| 285 | { |
| 286 | (*info->memory_error_func) (status, memaddr, info); |
| 287 | return; |
| 288 | } |
| 289 | temp |= bfd_getl32 (buffer); |
| 290 | |
| 291 | insn &= 0xffff0000; |
| 292 | insn |= (temp >> 16) & 0xffff; |
| 293 | extension = (temp & 0xffff) << 8; |
| 294 | |
| 295 | status = (*info->read_memory_func) (memaddr + 6, buffer, 1, info); |
| 296 | if (status != 0) |
| 297 | { |
| 298 | (*info->memory_error_func) (status, memaddr, info); |
| 299 | return; |
| 300 | } |
| 301 | extension |= *(unsigned char *) buffer; |
| 302 | } |
| 303 | |
| 304 | match = 1; |
| 305 | (*info->fprintf_func) (info->stream, "%s\t", op->name); |
| 306 | |
| 307 | /* Now print the operands. */ |
| 308 | for (opindex_ptr = op->operands, nocomma = 1; |
| 309 | *opindex_ptr != 0; |
| 310 | opindex_ptr++) |
| 311 | { |
| 312 | unsigned long value; |
| 313 | |
| 314 | operand = &mn10300_operands[*opindex_ptr]; |
| 315 | |
| 316 | /* If this operand is a PLUS (autoincrement), then do not emit |
| 317 | a comma before emitting the plus. */ |
| 318 | if ((operand->flags & MN10300_OPERAND_PLUS) != 0) |
| 319 | nocomma = 1; |
| 320 | |
| 321 | if ((operand->flags & MN10300_OPERAND_SPLIT) != 0) |
| 322 | { |
| 323 | unsigned long temp; |
| 324 | |
| 325 | value = insn & ((1 << operand->bits) - 1); |
| 326 | value <<= (32 - operand->bits); |
| 327 | temp = extension >> operand->shift; |
| 328 | temp &= ((1 << (32 - operand->bits)) - 1); |
| 329 | value |= temp; |
| 330 | value = ((value ^ (((unsigned long) 1) << 31)) |
| 331 | - (((unsigned long) 1) << 31)); |
| 332 | } |
| 333 | else if ((operand->flags & MN10300_OPERAND_24BIT) != 0) |
| 334 | { |
| 335 | unsigned long temp; |
| 336 | |
| 337 | value = insn & ((1 << operand->bits) - 1); |
| 338 | value <<= (24 - operand->bits); |
| 339 | temp = extension >> operand->shift; |
| 340 | temp &= ((1 << (24 - operand->bits)) - 1); |
| 341 | value |= temp; |
| 342 | if ((operand->flags & MN10300_OPERAND_SIGNED) != 0) |
| 343 | value = ((value & 0xffffff) ^ 0x800000) - 0x800000; |
| 344 | } |
| 345 | else if ((operand->flags & (MN10300_OPERAND_FSREG |
| 346 | | MN10300_OPERAND_FDREG))) |
| 347 | { |
| 348 | /* See m10300-opc.c just before #define FSM0 for an |
| 349 | explanation of these variables. Note that |
| 350 | FMT-implied shifts are not taken into account for |
| 351 | FP registers. */ |
| 352 | unsigned long mask_low, mask_high; |
| 353 | int shl_low, shr_high, shl_high; |
| 354 | |
| 355 | switch (operand->bits) |
| 356 | { |
| 357 | case 5: |
| 358 | /* Handle regular FP registers. */ |
| 359 | if (operand->shift >= 0) |
| 360 | { |
| 361 | /* This is an `m' register. */ |
| 362 | shl_low = operand->shift; |
| 363 | shl_high = 8 + (8 & shl_low) + (shl_low & 4) / 4; |
| 364 | } |
| 365 | else |
| 366 | { |
| 367 | /* This is an `n' register. */ |
| 368 | shl_low = -operand->shift; |
| 369 | shl_high = shl_low / 4; |
| 370 | } |
| 371 | mask_low = 0x0f; |
| 372 | mask_high = 0x10; |
| 373 | shr_high = 4; |
| 374 | break; |
| 375 | |
| 376 | case 3: |
| 377 | /* Handle accumulators. */ |
| 378 | shl_low = -operand->shift; |
| 379 | shl_high = 0; |
| 380 | mask_low = 0x03; |
| 381 | mask_high = 0x04; |
| 382 | shr_high = 2; |
| 383 | break; |
| 384 | |
| 385 | default: |
| 386 | abort (); |
| 387 | } |
| 388 | value = ((((insn >> shl_high) << shr_high) & mask_high) |
| 389 | | ((insn >> shl_low) & mask_low)); |
| 390 | } |
| 391 | else if ((operand->flags & MN10300_OPERAND_EXTENDED) != 0) |
| 392 | value = ((extension >> (operand->shift)) |
| 393 | & ((1 << operand->bits) - 1)); |
| 394 | |
| 395 | else |
| 396 | value = ((insn >> (operand->shift)) |
| 397 | & ((1 << operand->bits) - 1)); |
| 398 | |
| 399 | if ((operand->flags & MN10300_OPERAND_SIGNED) != 0 |
| 400 | /* These are properly extended by the code above. */ |
| 401 | && ((operand->flags & MN10300_OPERAND_24BIT) == 0)) |
| 402 | value = ((value ^ (((unsigned long) 1) << (operand->bits - 1))) |
| 403 | - (((unsigned long) 1) << (operand->bits - 1))); |
| 404 | |
| 405 | if (!nocomma |
| 406 | && (!paren |
| 407 | || ((operand->flags & MN10300_OPERAND_PAREN) == 0))) |
| 408 | (*info->fprintf_func) (info->stream, ","); |
| 409 | |
| 410 | nocomma = 0; |
| 411 | |
| 412 | if ((operand->flags & MN10300_OPERAND_DREG) != 0) |
| 413 | { |
| 414 | value = ((insn >> (operand->shift + extra_shift)) |
| 415 | & ((1 << operand->bits) - 1)); |
| 416 | (*info->fprintf_func) (info->stream, "d%d", (int) value); |
| 417 | } |
| 418 | |
| 419 | else if ((operand->flags & MN10300_OPERAND_AREG) != 0) |
| 420 | { |
| 421 | value = ((insn >> (operand->shift + extra_shift)) |
| 422 | & ((1 << operand->bits) - 1)); |
| 423 | (*info->fprintf_func) (info->stream, "a%d", (int) value); |
| 424 | } |
| 425 | |
| 426 | else if ((operand->flags & MN10300_OPERAND_SP) != 0) |
| 427 | (*info->fprintf_func) (info->stream, "sp"); |
| 428 | |
| 429 | else if ((operand->flags & MN10300_OPERAND_PSW) != 0) |
| 430 | (*info->fprintf_func) (info->stream, "psw"); |
| 431 | |
| 432 | else if ((operand->flags & MN10300_OPERAND_MDR) != 0) |
| 433 | (*info->fprintf_func) (info->stream, "mdr"); |
| 434 | |
| 435 | else if ((operand->flags & MN10300_OPERAND_RREG) != 0) |
| 436 | { |
| 437 | value = ((insn >> (operand->shift + extra_shift)) |
| 438 | & ((1 << operand->bits) - 1)); |
| 439 | if (value < 8) |
| 440 | (*info->fprintf_func) (info->stream, "r%d", (int) value); |
| 441 | else if (value < 12) |
| 442 | (*info->fprintf_func) (info->stream, "a%d", (int) value - 8); |
| 443 | else |
| 444 | (*info->fprintf_func) (info->stream, "d%d", (int) value - 12); |
| 445 | } |
| 446 | |
| 447 | else if ((operand->flags & MN10300_OPERAND_XRREG) != 0) |
| 448 | { |
| 449 | value = ((insn >> (operand->shift + extra_shift)) |
| 450 | & ((1 << operand->bits) - 1)); |
| 451 | if (value == 0) |
| 452 | (*info->fprintf_func) (info->stream, "sp"); |
| 453 | else |
| 454 | (*info->fprintf_func) (info->stream, "xr%d", (int) value); |
| 455 | } |
| 456 | |
| 457 | else if ((operand->flags & MN10300_OPERAND_FSREG) != 0) |
| 458 | (*info->fprintf_func) (info->stream, "fs%d", (int) value); |
| 459 | |
| 460 | else if ((operand->flags & MN10300_OPERAND_FDREG) != 0) |
| 461 | (*info->fprintf_func) (info->stream, "fd%d", (int) value); |
| 462 | |
| 463 | else if ((operand->flags & MN10300_OPERAND_FPCR) != 0) |
| 464 | (*info->fprintf_func) (info->stream, "fpcr"); |
| 465 | |
| 466 | else if ((operand->flags & MN10300_OPERAND_USP) != 0) |
| 467 | (*info->fprintf_func) (info->stream, "usp"); |
| 468 | |
| 469 | else if ((operand->flags & MN10300_OPERAND_SSP) != 0) |
| 470 | (*info->fprintf_func) (info->stream, "ssp"); |
| 471 | |
| 472 | else if ((operand->flags & MN10300_OPERAND_MSP) != 0) |
| 473 | (*info->fprintf_func) (info->stream, "msp"); |
| 474 | |
| 475 | else if ((operand->flags & MN10300_OPERAND_PC) != 0) |
| 476 | (*info->fprintf_func) (info->stream, "pc"); |
| 477 | |
| 478 | else if ((operand->flags & MN10300_OPERAND_EPSW) != 0) |
| 479 | (*info->fprintf_func) (info->stream, "epsw"); |
| 480 | |
| 481 | else if ((operand->flags & MN10300_OPERAND_PLUS) != 0) |
| 482 | (*info->fprintf_func) (info->stream, "+"); |
| 483 | |
| 484 | else if ((operand->flags & MN10300_OPERAND_PAREN) != 0) |
| 485 | { |
| 486 | if (paren) |
| 487 | (*info->fprintf_func) (info->stream, ")"); |
| 488 | else |
| 489 | { |
| 490 | (*info->fprintf_func) (info->stream, "("); |
| 491 | nocomma = 1; |
| 492 | } |
| 493 | paren = !paren; |
| 494 | } |
| 495 | |
| 496 | else if ((operand->flags & MN10300_OPERAND_PCREL) != 0) |
| 497 | (*info->print_address_func) ((long) value + memaddr, info); |
| 498 | |
| 499 | else if ((operand->flags & MN10300_OPERAND_MEMADDR) != 0) |
| 500 | (*info->print_address_func) (value, info); |
| 501 | |
| 502 | else if ((operand->flags & MN10300_OPERAND_REG_LIST) != 0) |
| 503 | { |
| 504 | int comma = 0; |
| 505 | |
| 506 | (*info->fprintf_func) (info->stream, "["); |
| 507 | if (value & 0x80) |
| 508 | { |
| 509 | (*info->fprintf_func) (info->stream, "d2"); |
| 510 | comma = 1; |
| 511 | } |
| 512 | |
| 513 | if (value & 0x40) |
| 514 | { |
| 515 | if (comma) |
| 516 | (*info->fprintf_func) (info->stream, ","); |
| 517 | (*info->fprintf_func) (info->stream, "d3"); |
| 518 | comma = 1; |
| 519 | } |
| 520 | |
| 521 | if (value & 0x20) |
| 522 | { |
| 523 | if (comma) |
| 524 | (*info->fprintf_func) (info->stream, ","); |
| 525 | (*info->fprintf_func) (info->stream, "a2"); |
| 526 | comma = 1; |
| 527 | } |
| 528 | |
| 529 | if (value & 0x10) |
| 530 | { |
| 531 | if (comma) |
| 532 | (*info->fprintf_func) (info->stream, ","); |
| 533 | (*info->fprintf_func) (info->stream, "a3"); |
| 534 | comma = 1; |
| 535 | } |
| 536 | |
| 537 | if (value & 0x08) |
| 538 | { |
| 539 | if (comma) |
| 540 | (*info->fprintf_func) (info->stream, ","); |
| 541 | (*info->fprintf_func) (info->stream, "other"); |
| 542 | comma = 1; |
| 543 | } |
| 544 | |
| 545 | if (value & 0x04) |
| 546 | { |
| 547 | if (comma) |
| 548 | (*info->fprintf_func) (info->stream, ","); |
| 549 | (*info->fprintf_func) (info->stream, "exreg0"); |
| 550 | comma = 1; |
| 551 | } |
| 552 | if (value & 0x02) |
| 553 | { |
| 554 | if (comma) |
| 555 | (*info->fprintf_func) (info->stream, ","); |
| 556 | (*info->fprintf_func) (info->stream, "exreg1"); |
| 557 | comma = 1; |
| 558 | } |
| 559 | if (value & 0x01) |
| 560 | { |
| 561 | if (comma) |
| 562 | (*info->fprintf_func) (info->stream, ","); |
| 563 | (*info->fprintf_func) (info->stream, "exother"); |
| 564 | comma = 1; |
| 565 | } |
| 566 | (*info->fprintf_func) (info->stream, "]"); |
| 567 | } |
| 568 | |
| 569 | else |
| 570 | (*info->fprintf_func) (info->stream, "%ld", (long) value); |
| 571 | } |
| 572 | /* All done. */ |
| 573 | break; |
| 574 | } |
| 575 | op++; |
| 576 | } |
| 577 | |
| 578 | if (!match) |
| 579 | /* xgettext:c-format */ |
| 580 | (*info->fprintf_func) (info->stream, _("unknown\t0x%04lx"), insn); |
| 581 | } |
| 582 | |
| 583 | int |
| 584 | print_insn_mn10300 (bfd_vma memaddr, struct disassemble_info *info) |
| 585 | { |
| 586 | int status; |
| 587 | bfd_byte buffer[4]; |
| 588 | unsigned long insn; |
| 589 | unsigned int consume; |
| 590 | |
| 591 | /* First figure out how big the opcode is. */ |
| 592 | status = (*info->read_memory_func) (memaddr, buffer, 1, info); |
| 593 | if (status != 0) |
| 594 | { |
| 595 | (*info->memory_error_func) (status, memaddr, info); |
| 596 | return -1; |
| 597 | } |
| 598 | insn = *(unsigned char *) buffer; |
| 599 | |
| 600 | /* These are one byte insns. */ |
| 601 | if ((insn & 0xf3) == 0x00 |
| 602 | || (insn & 0xf0) == 0x10 |
| 603 | || (insn & 0xfc) == 0x3c |
| 604 | || (insn & 0xf3) == 0x41 |
| 605 | || (insn & 0xf3) == 0x40 |
| 606 | || (insn & 0xfc) == 0x50 |
| 607 | || (insn & 0xfc) == 0x54 |
| 608 | || (insn & 0xf0) == 0x60 |
| 609 | || (insn & 0xf0) == 0x70 |
| 610 | || ((insn & 0xf0) == 0x80 |
| 611 | && (insn & 0x0c) >> 2 != (insn & 0x03)) |
| 612 | || ((insn & 0xf0) == 0x90 |
| 613 | && (insn & 0x0c) >> 2 != (insn & 0x03)) |
| 614 | || ((insn & 0xf0) == 0xa0 |
| 615 | && (insn & 0x0c) >> 2 != (insn & 0x03)) |
| 616 | || ((insn & 0xf0) == 0xb0 |
| 617 | && (insn & 0x0c) >> 2 != (insn & 0x03)) |
| 618 | || (insn & 0xff) == 0xcb |
| 619 | || (insn & 0xfc) == 0xd0 |
| 620 | || (insn & 0xfc) == 0xd4 |
| 621 | || (insn & 0xfc) == 0xd8 |
| 622 | || (insn & 0xf0) == 0xe0 |
| 623 | || (insn & 0xff) == 0xff) |
| 624 | { |
| 625 | consume = 1; |
| 626 | } |
| 627 | |
| 628 | /* These are two byte insns. */ |
| 629 | else if ((insn & 0xf0) == 0x80 |
| 630 | || (insn & 0xf0) == 0x90 |
| 631 | || (insn & 0xf0) == 0xa0 |
| 632 | || (insn & 0xf0) == 0xb0 |
| 633 | || (insn & 0xfc) == 0x20 |
| 634 | || (insn & 0xfc) == 0x28 |
| 635 | || (insn & 0xf3) == 0x43 |
| 636 | || (insn & 0xf3) == 0x42 |
| 637 | || (insn & 0xfc) == 0x58 |
| 638 | || (insn & 0xfc) == 0x5c |
| 639 | || ((insn & 0xf0) == 0xc0 |
| 640 | && (insn & 0xff) != 0xcb |
| 641 | && (insn & 0xff) != 0xcc |
| 642 | && (insn & 0xff) != 0xcd) |
| 643 | || (insn & 0xff) == 0xf0 |
| 644 | || (insn & 0xff) == 0xf1 |
| 645 | || (insn & 0xff) == 0xf2 |
| 646 | || (insn & 0xff) == 0xf3 |
| 647 | || (insn & 0xff) == 0xf4 |
| 648 | || (insn & 0xff) == 0xf5 |
| 649 | || (insn & 0xff) == 0xf6) |
| 650 | { |
| 651 | status = (*info->read_memory_func) (memaddr, buffer, 2, info); |
| 652 | if (status != 0) |
| 653 | { |
| 654 | (*info->memory_error_func) (status, memaddr, info); |
| 655 | return -1; |
| 656 | } |
| 657 | insn = bfd_getb16 (buffer); |
| 658 | consume = 2; |
| 659 | } |
| 660 | |
| 661 | /* These are three byte insns. */ |
| 662 | else if ((insn & 0xff) == 0xf8 |
| 663 | || (insn & 0xff) == 0xcc |
| 664 | || (insn & 0xff) == 0xf9 |
| 665 | || (insn & 0xf3) == 0x01 |
| 666 | || (insn & 0xf3) == 0x02 |
| 667 | || (insn & 0xf3) == 0x03 |
| 668 | || (insn & 0xfc) == 0x24 |
| 669 | || (insn & 0xfc) == 0x2c |
| 670 | || (insn & 0xfc) == 0x30 |
| 671 | || (insn & 0xfc) == 0x34 |
| 672 | || (insn & 0xfc) == 0x38 |
| 673 | || (insn & 0xff) == 0xde |
| 674 | || (insn & 0xff) == 0xdf |
| 675 | || (insn & 0xff) == 0xf9 |
| 676 | || (insn & 0xff) == 0xcc) |
| 677 | { |
| 678 | status = (*info->read_memory_func) (memaddr, buffer, 2, info); |
| 679 | if (status != 0) |
| 680 | { |
| 681 | (*info->memory_error_func) (status, memaddr, info); |
| 682 | return -1; |
| 683 | } |
| 684 | insn = bfd_getb16 (buffer); |
| 685 | insn <<= 8; |
| 686 | status = (*info->read_memory_func) (memaddr + 2, buffer, 1, info); |
| 687 | if (status != 0) |
| 688 | { |
| 689 | (*info->memory_error_func) (status, memaddr, info); |
| 690 | return -1; |
| 691 | } |
| 692 | insn |= *(unsigned char *) buffer; |
| 693 | consume = 3; |
| 694 | } |
| 695 | |
| 696 | /* These are four byte insns. */ |
| 697 | else if ((insn & 0xff) == 0xfa |
| 698 | || (insn & 0xff) == 0xf7 |
| 699 | || (insn & 0xff) == 0xfb) |
| 700 | { |
| 701 | status = (*info->read_memory_func) (memaddr, buffer, 4, info); |
| 702 | if (status != 0) |
| 703 | { |
| 704 | (*info->memory_error_func) (status, memaddr, info); |
| 705 | return -1; |
| 706 | } |
| 707 | insn = bfd_getb32 (buffer); |
| 708 | consume = 4; |
| 709 | } |
| 710 | |
| 711 | /* These are five byte insns. */ |
| 712 | else if ((insn & 0xff) == 0xcd |
| 713 | || (insn & 0xff) == 0xdc) |
| 714 | { |
| 715 | status = (*info->read_memory_func) (memaddr, buffer, 4, info); |
| 716 | if (status != 0) |
| 717 | { |
| 718 | (*info->memory_error_func) (status, memaddr, info); |
| 719 | return -1; |
| 720 | } |
| 721 | insn = bfd_getb32 (buffer); |
| 722 | consume = 5; |
| 723 | } |
| 724 | |
| 725 | /* These are six byte insns. */ |
| 726 | else if ((insn & 0xff) == 0xfd |
| 727 | || (insn & 0xff) == 0xfc) |
| 728 | { |
| 729 | status = (*info->read_memory_func) (memaddr, buffer, 4, info); |
| 730 | if (status != 0) |
| 731 | { |
| 732 | (*info->memory_error_func) (status, memaddr, info); |
| 733 | return -1; |
| 734 | } |
| 735 | |
| 736 | insn = bfd_getb32 (buffer); |
| 737 | consume = 6; |
| 738 | } |
| 739 | |
| 740 | /* Else its a seven byte insns (in theory). */ |
| 741 | else |
| 742 | { |
| 743 | status = (*info->read_memory_func) (memaddr, buffer, 4, info); |
| 744 | if (status != 0) |
| 745 | { |
| 746 | (*info->memory_error_func) (status, memaddr, info); |
| 747 | return -1; |
| 748 | } |
| 749 | |
| 750 | insn = bfd_getb32 (buffer); |
| 751 | consume = 7; |
| 752 | /* Handle the 5-byte extended instruction codes. */ |
| 753 | if ((insn & 0xfff80000) == 0xfe800000) |
| 754 | consume = 5; |
| 755 | } |
| 756 | |
| 757 | disassemble (memaddr, info, insn, consume); |
| 758 | |
| 759 | return consume; |
| 760 | } |