| 1 | /* Disassemble h8300 instructions. |
| 2 | Copyright (C) 1993-2020 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 | #define DEFINE_TABLE |
| 22 | |
| 23 | #include "sysdep.h" |
| 24 | #define h8_opcodes h8ops |
| 25 | #include "opcode/h8300.h" |
| 26 | #include "disassemble.h" |
| 27 | #include "opintl.h" |
| 28 | #include "libiberty.h" |
| 29 | |
| 30 | struct h8_instruction |
| 31 | { |
| 32 | int length; |
| 33 | const struct h8_opcode *opcode; |
| 34 | }; |
| 35 | |
| 36 | struct h8_instruction *h8_instructions; |
| 37 | |
| 38 | /* Run through the opcodes and sort them into order to make them easy |
| 39 | to disassemble. */ |
| 40 | |
| 41 | static void |
| 42 | bfd_h8_disassemble_init (void) |
| 43 | { |
| 44 | unsigned int i; |
| 45 | unsigned int nopcodes; |
| 46 | const struct h8_opcode *p; |
| 47 | struct h8_instruction *pi; |
| 48 | |
| 49 | nopcodes = sizeof (h8_opcodes) / sizeof (struct h8_opcode); |
| 50 | |
| 51 | h8_instructions = xmalloc (nopcodes * sizeof (struct h8_instruction)); |
| 52 | |
| 53 | for (p = h8_opcodes, pi = h8_instructions; p->name; p++, pi++) |
| 54 | { |
| 55 | /* Just make sure there are an even number of nibbles in it, and |
| 56 | that the count is the same as the length. */ |
| 57 | for (i = 0; p->data.nib[i] != (op_type) E; i++) |
| 58 | ; |
| 59 | |
| 60 | if (i & 1) |
| 61 | { |
| 62 | /* xgettext:c-format */ |
| 63 | opcodes_error_handler (_("internal error, h8_disassemble_init")); |
| 64 | abort (); |
| 65 | } |
| 66 | |
| 67 | pi->length = i / 2; |
| 68 | pi->opcode = p; |
| 69 | } |
| 70 | |
| 71 | /* Add entry for the NULL vector terminator. */ |
| 72 | pi->length = 0; |
| 73 | pi->opcode = p; |
| 74 | } |
| 75 | |
| 76 | static void |
| 77 | extract_immediate (FILE *stream, |
| 78 | op_type looking_for, |
| 79 | int thisnib, |
| 80 | unsigned char *data, |
| 81 | int *cst, |
| 82 | int *len, |
| 83 | const struct h8_opcode *q) |
| 84 | { |
| 85 | switch (looking_for & SIZE) |
| 86 | { |
| 87 | case L_2: |
| 88 | *len = 2; |
| 89 | *cst = thisnib & 3; |
| 90 | |
| 91 | /* DISP2 special treatment. */ |
| 92 | if ((looking_for & MODE) == DISP) |
| 93 | { |
| 94 | if (OP_KIND (q->how) == O_MOVAB |
| 95 | || OP_KIND (q->how) == O_MOVAW |
| 96 | || OP_KIND (q->how) == O_MOVAL) |
| 97 | { |
| 98 | /* Handling for mova insn. */ |
| 99 | switch (q->args.nib[0] & MODE) |
| 100 | { |
| 101 | case INDEXB: |
| 102 | default: |
| 103 | break; |
| 104 | case INDEXW: |
| 105 | *cst *= 2; |
| 106 | break; |
| 107 | case INDEXL: |
| 108 | *cst *= 4; |
| 109 | break; |
| 110 | } |
| 111 | } |
| 112 | else |
| 113 | { |
| 114 | /* Handling for non-mova insn. */ |
| 115 | switch (OP_SIZE (q->how)) |
| 116 | { |
| 117 | default: break; |
| 118 | case SW: |
| 119 | *cst *= 2; |
| 120 | break; |
| 121 | case SL: |
| 122 | *cst *= 4; |
| 123 | break; |
| 124 | } |
| 125 | } |
| 126 | } |
| 127 | break; |
| 128 | case L_8: |
| 129 | *len = 8; |
| 130 | *cst = data[0]; |
| 131 | break; |
| 132 | case L_16: |
| 133 | case L_16U: |
| 134 | *len = 16; |
| 135 | *cst = (data[0] << 8) + data [1]; |
| 136 | #if 0 |
| 137 | if ((looking_for & SIZE) == L_16) |
| 138 | *cst = (short) *cst; /* Sign extend. */ |
| 139 | #endif |
| 140 | break; |
| 141 | case L_32: |
| 142 | *len = 32; |
| 143 | *cst = (((unsigned) data[0] << 24) + (data[1] << 16) |
| 144 | + (data[2] << 8) + data[3]); |
| 145 | break; |
| 146 | default: |
| 147 | *len = 0; |
| 148 | *cst = 0; |
| 149 | fprintf (stream, "DISP bad size\n"); |
| 150 | break; |
| 151 | } |
| 152 | } |
| 153 | |
| 154 | static const char *regnames[] = |
| 155 | { |
| 156 | "r0h", "r1h", "r2h", "r3h", "r4h", "r5h", "r6h", "r7h", |
| 157 | "r0l", "r1l", "r2l", "r3l", "r4l", "r5l", "r6l", "r7l" |
| 158 | }; |
| 159 | static const char *wregnames[] = |
| 160 | { |
| 161 | "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", |
| 162 | "e0", "e1", "e2", "e3", "e4", "e5", "e6", "e7" |
| 163 | }; |
| 164 | static const char *lregnames[] = |
| 165 | { |
| 166 | "er0", "er1", "er2", "er3", "er4", "er5", "er6", "er7", |
| 167 | "er0", "er1", "er2", "er3", "er4", "er5", "er6", "er7" |
| 168 | }; |
| 169 | static const char *cregnames[] = |
| 170 | { |
| 171 | "ccr", "exr", "mach", "macl", "", "", "vbr", "sbr" |
| 172 | }; |
| 173 | |
| 174 | static void |
| 175 | print_one_arg (disassemble_info *info, |
| 176 | bfd_vma addr, |
| 177 | op_type x, |
| 178 | int cst, |
| 179 | int cstlen, |
| 180 | int rdisp_n, |
| 181 | int rn, |
| 182 | const char **pregnames, |
| 183 | int len) |
| 184 | { |
| 185 | void * stream = info->stream; |
| 186 | fprintf_ftype outfn = info->fprintf_func; |
| 187 | |
| 188 | if ((x & SIZE) == L_3 || (x & SIZE) == L_3NZ) |
| 189 | outfn (stream, "#0x%x", (unsigned) cst); |
| 190 | else if ((x & MODE) == IMM) |
| 191 | outfn (stream, "#0x%x", (unsigned) cst); |
| 192 | else if ((x & MODE) == DBIT || (x & MODE) == KBIT) |
| 193 | outfn (stream, "#%d", (unsigned) cst); |
| 194 | else if ((x & MODE) == CONST_2) |
| 195 | outfn (stream, "#2"); |
| 196 | else if ((x & MODE) == CONST_4) |
| 197 | outfn (stream, "#4"); |
| 198 | else if ((x & MODE) == CONST_8) |
| 199 | outfn (stream, "#8"); |
| 200 | else if ((x & MODE) == CONST_16) |
| 201 | outfn (stream, "#16"); |
| 202 | else if ((x & MODE) == REG) |
| 203 | { |
| 204 | switch (x & SIZE) |
| 205 | { |
| 206 | case L_8: |
| 207 | outfn (stream, "%s", regnames[rn]); |
| 208 | break; |
| 209 | case L_16: |
| 210 | case L_16U: |
| 211 | outfn (stream, "%s", wregnames[rn]); |
| 212 | break; |
| 213 | case L_P: |
| 214 | case L_32: |
| 215 | outfn (stream, "%s", lregnames[rn]); |
| 216 | break; |
| 217 | } |
| 218 | } |
| 219 | else if ((x & MODE) == LOWREG) |
| 220 | { |
| 221 | switch (x & SIZE) |
| 222 | { |
| 223 | case L_8: |
| 224 | /* Always take low half of reg. */ |
| 225 | outfn (stream, "%s.b", regnames[rn < 8 ? rn + 8 : rn]); |
| 226 | break; |
| 227 | case L_16: |
| 228 | case L_16U: |
| 229 | /* Always take low half of reg. */ |
| 230 | outfn (stream, "%s.w", wregnames[rn < 8 ? rn : rn - 8]); |
| 231 | break; |
| 232 | case L_P: |
| 233 | case L_32: |
| 234 | outfn (stream, "%s.l", lregnames[rn]); |
| 235 | break; |
| 236 | } |
| 237 | } |
| 238 | else if ((x & MODE) == POSTINC) |
| 239 | outfn (stream, "@%s+", pregnames[rn]); |
| 240 | |
| 241 | else if ((x & MODE) == POSTDEC) |
| 242 | outfn (stream, "@%s-", pregnames[rn]); |
| 243 | |
| 244 | else if ((x & MODE) == PREINC) |
| 245 | outfn (stream, "@+%s", pregnames[rn]); |
| 246 | |
| 247 | else if ((x & MODE) == PREDEC) |
| 248 | outfn (stream, "@-%s", pregnames[rn]); |
| 249 | |
| 250 | else if ((x & MODE) == IND) |
| 251 | outfn (stream, "@%s", pregnames[rn]); |
| 252 | |
| 253 | else if ((x & MODE) == ABS || (x & ABSJMP)) |
| 254 | outfn (stream, "@0x%x:%d", (unsigned) cst, cstlen); |
| 255 | |
| 256 | else if ((x & MODE) == MEMIND) |
| 257 | outfn (stream, "@@%d (0x%x)", cst, cst); |
| 258 | |
| 259 | else if ((x & MODE) == VECIND) |
| 260 | { |
| 261 | /* FIXME Multiplier should be 2 or 4, depending on processor mode, |
| 262 | by which is meant "normal" vs. "middle", "advanced", "maximum". */ |
| 263 | |
| 264 | int offset = (cst + 0x80) * 4; |
| 265 | outfn (stream, "@@%d (0x%x)", offset, offset); |
| 266 | } |
| 267 | else if ((x & MODE) == PCREL) |
| 268 | { |
| 269 | if ((x & SIZE) == L_16 || |
| 270 | (x & SIZE) == L_16U) |
| 271 | { |
| 272 | outfn (stream, ".%s%d (0x%lx)", |
| 273 | (short) cst > 0 ? "+" : "", |
| 274 | (short) cst, |
| 275 | (long)(addr + (short) cst + len)); |
| 276 | } |
| 277 | else |
| 278 | { |
| 279 | outfn (stream, ".%s%d (0x%lx)", |
| 280 | (char) cst > 0 ? "+" : "", |
| 281 | (char) cst, |
| 282 | (long)(addr + (char) cst + len)); |
| 283 | } |
| 284 | } |
| 285 | else if ((x & MODE) == DISP) |
| 286 | outfn (stream, "@(0x%x:%d,%s)", cst, cstlen, pregnames[rdisp_n]); |
| 287 | |
| 288 | else if ((x & MODE) == INDEXB) |
| 289 | /* Always take low half of reg. */ |
| 290 | outfn (stream, "@(0x%x:%d,%s.b)", cst, cstlen, |
| 291 | regnames[rdisp_n < 8 ? rdisp_n + 8 : rdisp_n]); |
| 292 | |
| 293 | else if ((x & MODE) == INDEXW) |
| 294 | /* Always take low half of reg. */ |
| 295 | outfn (stream, "@(0x%x:%d,%s.w)", cst, cstlen, |
| 296 | wregnames[rdisp_n < 8 ? rdisp_n : rdisp_n - 8]); |
| 297 | |
| 298 | else if ((x & MODE) == INDEXL) |
| 299 | outfn (stream, "@(0x%x:%d,%s.l)", cst, cstlen, lregnames[rdisp_n]); |
| 300 | |
| 301 | else if (x & CTRL) |
| 302 | outfn (stream, "%s", cregnames[rn]); |
| 303 | |
| 304 | else if ((x & MODE) == CCR) |
| 305 | outfn (stream, "ccr"); |
| 306 | |
| 307 | else if ((x & MODE) == EXR) |
| 308 | outfn (stream, "exr"); |
| 309 | |
| 310 | else if ((x & MODE) == MACREG) |
| 311 | outfn (stream, "mac%c", cst ? 'l' : 'h'); |
| 312 | |
| 313 | else |
| 314 | /* xgettext:c-format */ |
| 315 | outfn (stream, _("Hmmmm 0x%x"), x); |
| 316 | } |
| 317 | |
| 318 | static unsigned int |
| 319 | bfd_h8_disassemble (bfd_vma addr, disassemble_info *info, int mach) |
| 320 | { |
| 321 | /* Find the first entry in the table for this opcode. */ |
| 322 | int regno[3] = { 0, 0, 0 }; |
| 323 | int dispregno[3] = { 0, 0, 0 }; |
| 324 | int cst[3] = { 0, 0, 0 }; |
| 325 | int cstlen[3] = { 0, 0, 0 }; |
| 326 | static bfd_boolean init = 0; |
| 327 | const struct h8_instruction *qi; |
| 328 | char const **pregnames = mach != 0 ? lregnames : wregnames; |
| 329 | int status; |
| 330 | unsigned int l; |
| 331 | unsigned char data[MAX_CODE_NIBBLES]; |
| 332 | void *stream = info->stream; |
| 333 | fprintf_ftype outfn = info->fprintf_func; |
| 334 | |
| 335 | if (!init) |
| 336 | { |
| 337 | bfd_h8_disassemble_init (); |
| 338 | init = 1; |
| 339 | } |
| 340 | |
| 341 | status = info->read_memory_func (addr, data, 2, info); |
| 342 | if (status != 0) |
| 343 | { |
| 344 | info->memory_error_func (status, addr, info); |
| 345 | return -1; |
| 346 | } |
| 347 | |
| 348 | for (l = 2; status == 0 && l < sizeof (data) / 2; l += 2) |
| 349 | status = info->read_memory_func (addr + l, data + l, 2, info); |
| 350 | |
| 351 | /* Find the exact opcode/arg combo. */ |
| 352 | for (qi = h8_instructions; qi->opcode->name; qi++) |
| 353 | { |
| 354 | const struct h8_opcode *q = qi->opcode; |
| 355 | const op_type *nib = q->data.nib; |
| 356 | unsigned int len = 0; |
| 357 | |
| 358 | while (1) |
| 359 | { |
| 360 | op_type looking_for = *nib; |
| 361 | int thisnib = data[len / 2]; |
| 362 | int opnr; |
| 363 | |
| 364 | thisnib = (len & 1) ? (thisnib & 0xf) : ((thisnib / 16) & 0xf); |
| 365 | opnr = ((looking_for & OP3) == OP3 ? 2 |
| 366 | : (looking_for & DST) == DST ? 1 : 0); |
| 367 | |
| 368 | if (looking_for < 16 && looking_for >= 0) |
| 369 | { |
| 370 | if (looking_for != thisnib) |
| 371 | goto fail; |
| 372 | } |
| 373 | else |
| 374 | { |
| 375 | if ((int) looking_for & (int) B31) |
| 376 | { |
| 377 | if (!((thisnib & 0x8) != 0)) |
| 378 | goto fail; |
| 379 | |
| 380 | looking_for = (op_type) ((int) looking_for & ~(int) B31); |
| 381 | thisnib &= 0x7; |
| 382 | } |
| 383 | else if ((int) looking_for & (int) B30) |
| 384 | { |
| 385 | if (!((thisnib & 0x8) == 0)) |
| 386 | goto fail; |
| 387 | |
| 388 | looking_for = (op_type) ((int) looking_for & ~(int) B30); |
| 389 | } |
| 390 | |
| 391 | if ((int) looking_for & (int) B21) |
| 392 | { |
| 393 | if (!((thisnib & 0x4) != 0)) |
| 394 | goto fail; |
| 395 | |
| 396 | looking_for = (op_type) ((int) looking_for & ~(int) B21); |
| 397 | thisnib &= 0xb; |
| 398 | } |
| 399 | else if ((int) looking_for & (int) B20) |
| 400 | { |
| 401 | if (!((thisnib & 0x4) == 0)) |
| 402 | goto fail; |
| 403 | |
| 404 | looking_for = (op_type) ((int) looking_for & ~(int) B20); |
| 405 | } |
| 406 | if ((int) looking_for & (int) B11) |
| 407 | { |
| 408 | if (!((thisnib & 0x2) != 0)) |
| 409 | goto fail; |
| 410 | |
| 411 | looking_for = (op_type) ((int) looking_for & ~(int) B11); |
| 412 | thisnib &= 0xd; |
| 413 | } |
| 414 | else if ((int) looking_for & (int) B10) |
| 415 | { |
| 416 | if (!((thisnib & 0x2) == 0)) |
| 417 | goto fail; |
| 418 | |
| 419 | looking_for = (op_type) ((int) looking_for & ~(int) B10); |
| 420 | } |
| 421 | |
| 422 | if ((int) looking_for & (int) B01) |
| 423 | { |
| 424 | if (!((thisnib & 0x1) != 0)) |
| 425 | goto fail; |
| 426 | |
| 427 | looking_for = (op_type) ((int) looking_for & ~(int) B01); |
| 428 | thisnib &= 0xe; |
| 429 | } |
| 430 | else if ((int) looking_for & (int) B00) |
| 431 | { |
| 432 | if (!((thisnib & 0x1) == 0)) |
| 433 | goto fail; |
| 434 | |
| 435 | looking_for = (op_type) ((int) looking_for & ~(int) B00); |
| 436 | } |
| 437 | |
| 438 | if (looking_for & IGNORE) |
| 439 | { |
| 440 | /* Hitachi has declared that IGNORE must be zero. */ |
| 441 | if (thisnib != 0) |
| 442 | goto fail; |
| 443 | } |
| 444 | else if ((looking_for & MODE) == DATA) |
| 445 | { |
| 446 | ; /* Skip embedded data. */ |
| 447 | } |
| 448 | else if ((looking_for & MODE) == DBIT) |
| 449 | { |
| 450 | /* Exclude adds/subs by looking at bit 0 and 2, and |
| 451 | make sure the operand size, either w or l, |
| 452 | matches by looking at bit 1. */ |
| 453 | if ((looking_for & 7) != (thisnib & 7)) |
| 454 | goto fail; |
| 455 | |
| 456 | cst[opnr] = (thisnib & 0x8) ? 2 : 1; |
| 457 | } |
| 458 | else if ((looking_for & MODE) == DISP |
| 459 | || (looking_for & MODE) == ABS |
| 460 | || (looking_for & MODE) == PCREL |
| 461 | || (looking_for & MODE) == INDEXB |
| 462 | || (looking_for & MODE) == INDEXW |
| 463 | || (looking_for & MODE) == INDEXL) |
| 464 | { |
| 465 | extract_immediate (stream, looking_for, thisnib, |
| 466 | data + len / 2, cst + opnr, |
| 467 | cstlen + opnr, q); |
| 468 | /* Even address == bra, odd == bra/s. */ |
| 469 | if (q->how == O (O_BRAS, SB)) |
| 470 | cst[opnr] -= 1; |
| 471 | } |
| 472 | else if ((looking_for & MODE) == REG |
| 473 | || (looking_for & MODE) == LOWREG |
| 474 | || (looking_for & MODE) == IND |
| 475 | || (looking_for & MODE) == PREINC |
| 476 | || (looking_for & MODE) == POSTINC |
| 477 | || (looking_for & MODE) == PREDEC |
| 478 | || (looking_for & MODE) == POSTDEC) |
| 479 | { |
| 480 | regno[opnr] = thisnib; |
| 481 | } |
| 482 | else if (looking_for & CTRL) /* Control Register. */ |
| 483 | { |
| 484 | thisnib &= 7; |
| 485 | if (((looking_for & MODE) == CCR && (thisnib != C_CCR)) |
| 486 | || ((looking_for & MODE) == EXR && (thisnib != C_EXR)) |
| 487 | || ((looking_for & MODE) == MACH && (thisnib != C_MACH)) |
| 488 | || ((looking_for & MODE) == MACL && (thisnib != C_MACL)) |
| 489 | || ((looking_for & MODE) == VBR && (thisnib != C_VBR)) |
| 490 | || ((looking_for & MODE) == SBR && (thisnib != C_SBR))) |
| 491 | goto fail; |
| 492 | if (((looking_for & MODE) == CCR_EXR |
| 493 | && (thisnib != C_CCR && thisnib != C_EXR)) |
| 494 | || ((looking_for & MODE) == VBR_SBR |
| 495 | && (thisnib != C_VBR && thisnib != C_SBR)) |
| 496 | || ((looking_for & MODE) == MACREG |
| 497 | && (thisnib != C_MACH && thisnib != C_MACL))) |
| 498 | goto fail; |
| 499 | if (((looking_for & MODE) == CC_EX_VB_SB |
| 500 | && (thisnib != C_CCR && thisnib != C_EXR |
| 501 | && thisnib != C_VBR && thisnib != C_SBR))) |
| 502 | goto fail; |
| 503 | |
| 504 | regno[opnr] = thisnib; |
| 505 | } |
| 506 | else if ((looking_for & SIZE) == L_5) |
| 507 | { |
| 508 | cst[opnr] = data[len / 2] & 31; |
| 509 | cstlen[opnr] = 5; |
| 510 | } |
| 511 | else if ((looking_for & SIZE) == L_4) |
| 512 | { |
| 513 | cst[opnr] = thisnib; |
| 514 | cstlen[opnr] = 4; |
| 515 | } |
| 516 | else if ((looking_for & SIZE) == L_16 |
| 517 | || (looking_for & SIZE) == L_16U) |
| 518 | { |
| 519 | cst[opnr] = (data[len / 2]) * 256 + data[(len + 2) / 2]; |
| 520 | cstlen[opnr] = 16; |
| 521 | } |
| 522 | else if ((looking_for & MODE) == MEMIND) |
| 523 | { |
| 524 | cst[opnr] = data[1]; |
| 525 | } |
| 526 | else if ((looking_for & MODE) == VECIND) |
| 527 | { |
| 528 | cst[opnr] = data[1] & 0x7f; |
| 529 | } |
| 530 | else if ((looking_for & SIZE) == L_32) |
| 531 | { |
| 532 | int i = len / 2; |
| 533 | |
| 534 | cst[opnr] = (((unsigned) data[i] << 24) |
| 535 | | (data[i + 1] << 16) |
| 536 | | (data[i + 2] << 8) |
| 537 | | (data[i + 3])); |
| 538 | |
| 539 | cstlen[opnr] = 32; |
| 540 | } |
| 541 | else if ((looking_for & SIZE) == L_24) |
| 542 | { |
| 543 | int i = len / 2; |
| 544 | |
| 545 | cst[opnr] = |
| 546 | (data[i] << 16) | (data[i + 1] << 8) | (data[i + 2]); |
| 547 | cstlen[opnr] = 24; |
| 548 | } |
| 549 | else if (looking_for & DISPREG) |
| 550 | { |
| 551 | dispregno[opnr] = thisnib & 7; |
| 552 | } |
| 553 | else if ((looking_for & MODE) == KBIT) |
| 554 | { |
| 555 | switch (thisnib) |
| 556 | { |
| 557 | case 9: |
| 558 | cst[opnr] = 4; |
| 559 | break; |
| 560 | case 8: |
| 561 | cst[opnr] = 2; |
| 562 | break; |
| 563 | case 0: |
| 564 | cst[opnr] = 1; |
| 565 | break; |
| 566 | default: |
| 567 | goto fail; |
| 568 | } |
| 569 | } |
| 570 | else if ((looking_for & SIZE) == L_8) |
| 571 | { |
| 572 | cstlen[opnr] = 8; |
| 573 | cst[opnr] = data[len / 2]; |
| 574 | } |
| 575 | else if ((looking_for & SIZE) == L_3 |
| 576 | || (looking_for & SIZE) == L_3NZ) |
| 577 | { |
| 578 | cst[opnr] = thisnib & 0x7; |
| 579 | if (cst[opnr] == 0 && (looking_for & SIZE) == L_3NZ) |
| 580 | goto fail; |
| 581 | } |
| 582 | else if ((looking_for & SIZE) == L_2) |
| 583 | { |
| 584 | cstlen[opnr] = 2; |
| 585 | cst[opnr] = thisnib & 0x3; |
| 586 | } |
| 587 | else if ((looking_for & MODE) == MACREG) |
| 588 | { |
| 589 | cst[opnr] = (thisnib == 3); |
| 590 | } |
| 591 | else if (looking_for == (op_type) E) |
| 592 | { |
| 593 | outfn (stream, "%s\t", q->name); |
| 594 | |
| 595 | /* Gross. Disgusting. */ |
| 596 | if (strcmp (q->name, "ldm.l") == 0) |
| 597 | { |
| 598 | int count, high; |
| 599 | |
| 600 | count = (data[1] / 16) & 0x3; |
| 601 | high = regno[1]; |
| 602 | |
| 603 | outfn (stream, "@sp+,er%d-er%d", high - count, high); |
| 604 | return qi->length; |
| 605 | } |
| 606 | |
| 607 | if (strcmp (q->name, "stm.l") == 0) |
| 608 | { |
| 609 | int count, low; |
| 610 | |
| 611 | count = (data[1] / 16) & 0x3; |
| 612 | low = regno[0]; |
| 613 | |
| 614 | outfn (stream, "er%d-er%d,@-sp", low, low + count); |
| 615 | return qi->length; |
| 616 | } |
| 617 | if (strcmp (q->name, "rte/l") == 0 |
| 618 | || strcmp (q->name, "rts/l") == 0) |
| 619 | { |
| 620 | if (regno[0] == 0) |
| 621 | outfn (stream, "er%d", regno[1]); |
| 622 | else |
| 623 | outfn (stream, "er%d-er%d", regno[1] - regno[0], |
| 624 | regno[1]); |
| 625 | return qi->length; |
| 626 | } |
| 627 | if (CONST_STRNEQ (q->name, "mova")) |
| 628 | { |
| 629 | const op_type *args = q->args.nib; |
| 630 | |
| 631 | if (args[1] == (op_type) E) |
| 632 | { |
| 633 | /* Short form. */ |
| 634 | print_one_arg (info, addr, args[0], cst[0], |
| 635 | cstlen[0], dispregno[0], regno[0], |
| 636 | pregnames, qi->length); |
| 637 | outfn (stream, ",er%d", dispregno[0]); |
| 638 | } |
| 639 | else |
| 640 | { |
| 641 | outfn (stream, "@(0x%x:%d,", cst[0], cstlen[0]); |
| 642 | print_one_arg (info, addr, args[1], cst[1], |
| 643 | cstlen[1], dispregno[1], regno[1], |
| 644 | pregnames, qi->length); |
| 645 | outfn (stream, ".%c),", |
| 646 | (args[0] & MODE) == INDEXB ? 'b' : 'w'); |
| 647 | print_one_arg (info, addr, args[2], cst[2], |
| 648 | cstlen[2], dispregno[2], regno[2], |
| 649 | pregnames, qi->length); |
| 650 | } |
| 651 | return qi->length; |
| 652 | } |
| 653 | /* Fill in the args. */ |
| 654 | { |
| 655 | const op_type *args = q->args.nib; |
| 656 | int hadone = 0; |
| 657 | int nargs; |
| 658 | |
| 659 | /* Special case handling for the adds and subs instructions |
| 660 | since in H8 mode thay can only take the r0-r7 registers |
| 661 | but in other (higher) modes they can take the er0-er7 |
| 662 | registers as well. */ |
| 663 | if (strcmp (qi->opcode->name, "adds") == 0 |
| 664 | || strcmp (qi->opcode->name, "subs") == 0) |
| 665 | { |
| 666 | outfn (stream, "#%d,%s", cst[0], pregnames[regno[1] & 0x7]); |
| 667 | return qi->length; |
| 668 | } |
| 669 | |
| 670 | for (nargs = 0; |
| 671 | nargs < 3 && args[nargs] != (op_type) E; |
| 672 | nargs++) |
| 673 | { |
| 674 | int x = args[nargs]; |
| 675 | |
| 676 | if (hadone) |
| 677 | outfn (stream, ","); |
| 678 | |
| 679 | print_one_arg (info, addr, x, |
| 680 | cst[nargs], cstlen[nargs], |
| 681 | dispregno[nargs], regno[nargs], |
| 682 | pregnames, qi->length); |
| 683 | |
| 684 | hadone = 1; |
| 685 | } |
| 686 | } |
| 687 | |
| 688 | return qi->length; |
| 689 | } |
| 690 | else |
| 691 | /* xgettext:c-format */ |
| 692 | outfn (stream, _("Don't understand 0x%x \n"), looking_for); |
| 693 | } |
| 694 | |
| 695 | len++; |
| 696 | nib++; |
| 697 | } |
| 698 | |
| 699 | fail: |
| 700 | ; |
| 701 | } |
| 702 | |
| 703 | /* Fell off the end. */ |
| 704 | outfn (stream, ".word\tH'%x,H'%x", data[0], data[1]); |
| 705 | return 2; |
| 706 | } |
| 707 | |
| 708 | int |
| 709 | print_insn_h8300 (bfd_vma addr, disassemble_info *info) |
| 710 | { |
| 711 | return bfd_h8_disassemble (addr, info, 0); |
| 712 | } |
| 713 | |
| 714 | int |
| 715 | print_insn_h8300h (bfd_vma addr, disassemble_info *info) |
| 716 | { |
| 717 | return bfd_h8_disassemble (addr, info, 1); |
| 718 | } |
| 719 | |
| 720 | int |
| 721 | print_insn_h8300s (bfd_vma addr, disassemble_info *info) |
| 722 | { |
| 723 | return bfd_h8_disassemble (addr, info, 2); |
| 724 | } |