| 1 | /* Print Z80 and R800 instructions |
| 2 | Copyright (C) 2005-2015 Free Software Foundation, Inc. |
| 3 | Contributed by Arnold Metselaar <arnold_m@operamail.com> |
| 4 | |
| 5 | This file is part of the GNU opcodes library. |
| 6 | |
| 7 | This library is free software; you can redistribute it and/or modify |
| 8 | it under the terms of the GNU General Public License as published by |
| 9 | the Free Software Foundation; either version 3, or (at your option) |
| 10 | any later version. |
| 11 | |
| 12 | It is distributed in the hope that it will be useful, but WITHOUT |
| 13 | ANY WARRANTY; without even the implied warranty of MERCHANTABILITY |
| 14 | or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public |
| 15 | License for more details. |
| 16 | |
| 17 | You should have received a copy of the GNU General Public License |
| 18 | along with this program; if not, write to the Free Software |
| 19 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
| 20 | MA 02110-1301, USA. */ |
| 21 | |
| 22 | #include "sysdep.h" |
| 23 | #include "dis-asm.h" |
| 24 | #include <stdio.h> |
| 25 | |
| 26 | struct buffer |
| 27 | { |
| 28 | bfd_vma base; |
| 29 | int n_fetch; |
| 30 | int n_used; |
| 31 | signed char data[4]; |
| 32 | } ; |
| 33 | |
| 34 | typedef int (*func)(struct buffer *, disassemble_info *, char *); |
| 35 | |
| 36 | struct tab_elt |
| 37 | { |
| 38 | unsigned char val; |
| 39 | unsigned char mask; |
| 40 | func fp; |
| 41 | char * text; |
| 42 | } ; |
| 43 | |
| 44 | #define TXTSIZ 24 |
| 45 | /* Names of 16-bit registers. */ |
| 46 | static char * rr_str[] = { "bc", "de", "hl", "sp" }; |
| 47 | /* Names of 8-bit registers. */ |
| 48 | static char * r_str[] = { "b", "c", "d", "e", "h", "l", "(hl)", "a" }; |
| 49 | /* Texts for condition codes. */ |
| 50 | static char * cc_str[] = { "nz", "z", "nc", "c", "po", "pe", "p", "m" }; |
| 51 | /* Instruction names for 8-bit arithmetic, operand "a" is often implicit */ |
| 52 | static char * arit_str[] = |
| 53 | { |
| 54 | "add a,", "adc a,", "sub ", "sbc a,", "and ", "xor ", "or ", "cp " |
| 55 | } ; |
| 56 | \f |
| 57 | static int |
| 58 | fetch_data (struct buffer *buf, disassemble_info * info, int n) |
| 59 | { |
| 60 | int r; |
| 61 | |
| 62 | if (buf->n_fetch + n > 4) |
| 63 | abort (); |
| 64 | |
| 65 | r = info->read_memory_func (buf->base + buf->n_fetch, |
| 66 | (unsigned char*) buf->data + buf->n_fetch, |
| 67 | n, info); |
| 68 | if (r == 0) |
| 69 | buf->n_fetch += n; |
| 70 | return !r; |
| 71 | } |
| 72 | |
| 73 | static int |
| 74 | prt (struct buffer *buf, disassemble_info * info, char *txt) |
| 75 | { |
| 76 | info->fprintf_func (info->stream, "%s", txt); |
| 77 | buf->n_used = buf->n_fetch; |
| 78 | return 1; |
| 79 | } |
| 80 | |
| 81 | static int |
| 82 | prt_e (struct buffer *buf, disassemble_info * info, char *txt) |
| 83 | { |
| 84 | char e; |
| 85 | int target_addr; |
| 86 | |
| 87 | if (fetch_data (buf, info, 1)) |
| 88 | { |
| 89 | e = buf->data[1]; |
| 90 | target_addr = (buf->base + 2 + e) & 0xffff; |
| 91 | buf->n_used = buf->n_fetch; |
| 92 | info->fprintf_func (info->stream, "%s0x%04x", txt, target_addr); |
| 93 | } |
| 94 | else |
| 95 | buf->n_used = -1; |
| 96 | |
| 97 | return buf->n_used; |
| 98 | } |
| 99 | |
| 100 | static int |
| 101 | jr_cc (struct buffer *buf, disassemble_info * info, char *txt) |
| 102 | { |
| 103 | char mytxt[TXTSIZ]; |
| 104 | |
| 105 | snprintf (mytxt, TXTSIZ, txt, cc_str[(buf->data[0] >> 3) & 3]); |
| 106 | return prt_e (buf, info, mytxt); |
| 107 | } |
| 108 | |
| 109 | static int |
| 110 | prt_nn (struct buffer *buf, disassemble_info * info, char *txt) |
| 111 | { |
| 112 | int nn; |
| 113 | unsigned char *p; |
| 114 | |
| 115 | p = (unsigned char*) buf->data + buf->n_fetch; |
| 116 | if (fetch_data (buf, info, 2)) |
| 117 | { |
| 118 | nn = p[0] + (p[1] << 8); |
| 119 | info->fprintf_func (info->stream, txt, nn); |
| 120 | buf->n_used = buf->n_fetch; |
| 121 | } |
| 122 | else |
| 123 | buf->n_used = -1; |
| 124 | return buf->n_used; |
| 125 | } |
| 126 | |
| 127 | static int |
| 128 | prt_rr_nn (struct buffer *buf, disassemble_info * info, char *txt) |
| 129 | { |
| 130 | char mytxt[TXTSIZ]; |
| 131 | int rr; |
| 132 | |
| 133 | rr = (buf->data[buf->n_fetch - 1] >> 4) & 3; |
| 134 | snprintf (mytxt, TXTSIZ, txt, rr_str[rr]); |
| 135 | return prt_nn (buf, info, mytxt); |
| 136 | } |
| 137 | |
| 138 | static int |
| 139 | prt_rr (struct buffer *buf, disassemble_info * info, char *txt) |
| 140 | { |
| 141 | info->fprintf_func (info->stream, "%s%s", txt, |
| 142 | rr_str[(buf->data[buf->n_fetch - 1] >> 4) & 3]); |
| 143 | buf->n_used = buf->n_fetch; |
| 144 | return buf->n_used; |
| 145 | } |
| 146 | |
| 147 | static int |
| 148 | prt_n (struct buffer *buf, disassemble_info * info, char *txt) |
| 149 | { |
| 150 | int n; |
| 151 | unsigned char *p; |
| 152 | |
| 153 | p = (unsigned char*) buf->data + buf->n_fetch; |
| 154 | |
| 155 | if (fetch_data (buf, info, 1)) |
| 156 | { |
| 157 | n = p[0]; |
| 158 | info->fprintf_func (info->stream, txt, n); |
| 159 | buf->n_used = buf->n_fetch; |
| 160 | } |
| 161 | else |
| 162 | buf->n_used = -1; |
| 163 | |
| 164 | return buf->n_used; |
| 165 | } |
| 166 | |
| 167 | static int |
| 168 | ld_r_n (struct buffer *buf, disassemble_info * info, char *txt) |
| 169 | { |
| 170 | char mytxt[TXTSIZ]; |
| 171 | |
| 172 | snprintf (mytxt, TXTSIZ, txt, r_str[(buf->data[0] >> 3) & 7]); |
| 173 | return prt_n (buf, info, mytxt); |
| 174 | } |
| 175 | |
| 176 | static int |
| 177 | prt_r (struct buffer *buf, disassemble_info * info, char *txt) |
| 178 | { |
| 179 | info->fprintf_func (info->stream, txt, |
| 180 | r_str[(buf->data[buf->n_fetch - 1] >> 3) & 7]); |
| 181 | buf->n_used = buf->n_fetch; |
| 182 | return buf->n_used; |
| 183 | } |
| 184 | |
| 185 | static int |
| 186 | ld_r_r (struct buffer *buf, disassemble_info * info, char *txt) |
| 187 | { |
| 188 | info->fprintf_func (info->stream, txt, |
| 189 | r_str[(buf->data[buf->n_fetch - 1] >> 3) & 7], |
| 190 | r_str[buf->data[buf->n_fetch - 1] & 7]); |
| 191 | buf->n_used = buf->n_fetch; |
| 192 | return buf->n_used; |
| 193 | } |
| 194 | |
| 195 | static int |
| 196 | arit_r (struct buffer *buf, disassemble_info * info, char *txt) |
| 197 | { |
| 198 | info->fprintf_func (info->stream, txt, |
| 199 | arit_str[(buf->data[buf->n_fetch - 1] >> 3) & 7], |
| 200 | r_str[buf->data[buf->n_fetch - 1] & 7]); |
| 201 | buf->n_used = buf->n_fetch; |
| 202 | return buf->n_used; |
| 203 | } |
| 204 | |
| 205 | static int |
| 206 | prt_cc (struct buffer *buf, disassemble_info * info, char *txt) |
| 207 | { |
| 208 | info->fprintf_func (info->stream, "%s%s", txt, |
| 209 | cc_str[(buf->data[0] >> 3) & 7]); |
| 210 | buf->n_used = buf->n_fetch; |
| 211 | return buf->n_used; |
| 212 | } |
| 213 | |
| 214 | static int |
| 215 | pop_rr (struct buffer *buf, disassemble_info * info, char *txt) |
| 216 | { |
| 217 | static char *rr_stack[] = { "bc","de","hl","af"}; |
| 218 | |
| 219 | info->fprintf_func (info->stream, "%s %s", txt, |
| 220 | rr_stack[(buf->data[0] >> 4) & 3]); |
| 221 | buf->n_used = buf->n_fetch; |
| 222 | return buf->n_used; |
| 223 | } |
| 224 | |
| 225 | |
| 226 | static int |
| 227 | jp_cc_nn (struct buffer *buf, disassemble_info * info, char *txt) |
| 228 | { |
| 229 | char mytxt[TXTSIZ]; |
| 230 | |
| 231 | snprintf (mytxt,TXTSIZ, |
| 232 | "%s%s,0x%%04x", txt, cc_str[(buf->data[0] >> 3) & 7]); |
| 233 | return prt_nn (buf, info, mytxt); |
| 234 | } |
| 235 | |
| 236 | static int |
| 237 | arit_n (struct buffer *buf, disassemble_info * info, char *txt) |
| 238 | { |
| 239 | char mytxt[TXTSIZ]; |
| 240 | |
| 241 | snprintf (mytxt,TXTSIZ, txt, arit_str[(buf->data[0] >> 3) & 7]); |
| 242 | return prt_n (buf, info, mytxt); |
| 243 | } |
| 244 | |
| 245 | static int |
| 246 | rst (struct buffer *buf, disassemble_info * info, char *txt) |
| 247 | { |
| 248 | info->fprintf_func (info->stream, txt, buf->data[0] & 0x38); |
| 249 | buf->n_used = buf->n_fetch; |
| 250 | return buf->n_used; |
| 251 | } |
| 252 | |
| 253 | \f |
| 254 | static int |
| 255 | cis (struct buffer *buf, disassemble_info * info, char *txt ATTRIBUTE_UNUSED) |
| 256 | { |
| 257 | static char * opar[] = { "ld", "cp", "in", "out" }; |
| 258 | char * op; |
| 259 | char c; |
| 260 | |
| 261 | c = buf->data[1]; |
| 262 | op = ((0x13 & c) == 0x13) ? "ot" : (opar[c & 3]); |
| 263 | info->fprintf_func (info->stream, |
| 264 | "%s%c%s", op, |
| 265 | (c & 0x08) ? 'd' : 'i', |
| 266 | (c & 0x10) ? "r" : ""); |
| 267 | buf->n_used = 2; |
| 268 | return buf->n_used; |
| 269 | } |
| 270 | |
| 271 | static int |
| 272 | dump (struct buffer *buf, disassemble_info * info, char *txt) |
| 273 | { |
| 274 | int i; |
| 275 | |
| 276 | info->fprintf_func (info->stream, "defb "); |
| 277 | for (i = 0; txt[i]; ++i) |
| 278 | info->fprintf_func (info->stream, i ? ", 0x%02x" : "0x%02x", |
| 279 | (unsigned char) buf->data[i]); |
| 280 | buf->n_used = i; |
| 281 | return buf->n_used; |
| 282 | } |
| 283 | \f |
| 284 | /* Table to disassemble machine codes with prefix 0xED. */ |
| 285 | struct tab_elt opc_ed[] = |
| 286 | { |
| 287 | { 0x70, 0xFF, prt, "in f,(c)" }, |
| 288 | { 0x70, 0xFF, dump, "xx" }, |
| 289 | { 0x40, 0xC7, prt_r, "in %s,(c)" }, |
| 290 | { 0x71, 0xFF, prt, "out (c),0" }, |
| 291 | { 0x70, 0xFF, dump, "xx" }, |
| 292 | { 0x41, 0xC7, prt_r, "out (c),%s" }, |
| 293 | { 0x42, 0xCF, prt_rr, "sbc hl," }, |
| 294 | { 0x43, 0xCF, prt_rr_nn, "ld (0x%%04x),%s" }, |
| 295 | { 0x44, 0xFF, prt, "neg" }, |
| 296 | { 0x45, 0xFF, prt, "retn" }, |
| 297 | { 0x46, 0xFF, prt, "im 0" }, |
| 298 | { 0x47, 0xFF, prt, "ld i,a" }, |
| 299 | { 0x4A, 0xCF, prt_rr, "adc hl," }, |
| 300 | { 0x4B, 0xCF, prt_rr_nn, "ld %s,(0x%%04x)" }, |
| 301 | { 0x4D, 0xFF, prt, "reti" }, |
| 302 | { 0x4F, 0xFF, prt, "ld r,a" }, |
| 303 | { 0x56, 0xFF, prt, "im 1" }, |
| 304 | { 0x57, 0xFF, prt, "ld a,i" }, |
| 305 | { 0x5E, 0xFF, prt, "im 2" }, |
| 306 | { 0x5F, 0xFF, prt, "ld a,r" }, |
| 307 | { 0x67, 0xFF, prt, "rrd" }, |
| 308 | { 0x6F, 0xFF, prt, "rld" }, |
| 309 | { 0xA0, 0xE4, cis, "" }, |
| 310 | { 0xC3, 0xFF, prt, "muluw hl,bc" }, |
| 311 | { 0xC5, 0xE7, prt_r, "mulub a,%s" }, |
| 312 | { 0xF3, 0xFF, prt, "muluw hl,sp" }, |
| 313 | { 0x00, 0x00, dump, "xx" } |
| 314 | }; |
| 315 | |
| 316 | static int |
| 317 | pref_ed (struct buffer * buf, disassemble_info * info, |
| 318 | char* txt ATTRIBUTE_UNUSED) |
| 319 | { |
| 320 | struct tab_elt *p; |
| 321 | |
| 322 | if (fetch_data(buf, info, 1)) |
| 323 | { |
| 324 | for (p = opc_ed; p->val != (buf->data[1] & p->mask); ++p) |
| 325 | ; |
| 326 | p->fp (buf, info, p->text); |
| 327 | } |
| 328 | else |
| 329 | buf->n_used = -1; |
| 330 | |
| 331 | return buf->n_used; |
| 332 | } |
| 333 | \f |
| 334 | /* Instruction names for the instructions addressing single bits. */ |
| 335 | static char *cb1_str[] = { "", "bit", "res", "set"}; |
| 336 | /* Instruction names for shifts and rotates. */ |
| 337 | static char *cb2_str[] = |
| 338 | { |
| 339 | "rlc", "rrc", "rl", "rr", "sla", "sra", "sli", "srl" |
| 340 | }; |
| 341 | |
| 342 | static int |
| 343 | pref_cb (struct buffer * buf, disassemble_info * info, |
| 344 | char* txt ATTRIBUTE_UNUSED) |
| 345 | { |
| 346 | if (fetch_data (buf, info, 1)) |
| 347 | { |
| 348 | buf->n_used = 2; |
| 349 | if ((buf->data[1] & 0xc0) == 0) |
| 350 | info->fprintf_func (info->stream, "%s %s", |
| 351 | cb2_str[(buf->data[1] >> 3) & 7], |
| 352 | r_str[buf->data[1] & 7]); |
| 353 | else |
| 354 | info->fprintf_func (info->stream, "%s %d,%s", |
| 355 | cb1_str[(buf->data[1] >> 6) & 3], |
| 356 | (buf->data[1] >> 3) & 7, |
| 357 | r_str[buf->data[1] & 7]); |
| 358 | } |
| 359 | else |
| 360 | buf->n_used = -1; |
| 361 | |
| 362 | return buf->n_used; |
| 363 | } |
| 364 | \f |
| 365 | static int |
| 366 | addvv (struct buffer * buf, disassemble_info * info, char* txt) |
| 367 | { |
| 368 | info->fprintf_func (info->stream, "add %s,%s", txt, txt); |
| 369 | |
| 370 | return buf->n_used = buf->n_fetch; |
| 371 | } |
| 372 | |
| 373 | static int |
| 374 | ld_v_v (struct buffer * buf, disassemble_info * info, char* txt) |
| 375 | { |
| 376 | char mytxt[TXTSIZ]; |
| 377 | |
| 378 | snprintf (mytxt, TXTSIZ, "ld %s%%s,%s%%s", txt, txt); |
| 379 | return ld_r_r (buf, info, mytxt); |
| 380 | } |
| 381 | |
| 382 | static int |
| 383 | prt_d (struct buffer *buf, disassemble_info * info, char *txt) |
| 384 | { |
| 385 | int d; |
| 386 | signed char *p; |
| 387 | |
| 388 | p = buf->data + buf->n_fetch; |
| 389 | |
| 390 | if (fetch_data (buf, info, 1)) |
| 391 | { |
| 392 | d = p[0]; |
| 393 | info->fprintf_func (info->stream, txt, d); |
| 394 | buf->n_used = buf->n_fetch; |
| 395 | } |
| 396 | else |
| 397 | buf->n_used = -1; |
| 398 | |
| 399 | return buf->n_used; |
| 400 | } |
| 401 | |
| 402 | static int |
| 403 | prt_d_n (struct buffer *buf, disassemble_info * info, char *txt) |
| 404 | { |
| 405 | char mytxt[TXTSIZ]; |
| 406 | int d; |
| 407 | signed char *p; |
| 408 | |
| 409 | p = buf->data + buf->n_fetch; |
| 410 | |
| 411 | if (fetch_data (buf, info, 1)) |
| 412 | { |
| 413 | d = p[0]; |
| 414 | snprintf (mytxt, TXTSIZ, txt, d); |
| 415 | return prt_n (buf, info, mytxt); |
| 416 | } |
| 417 | else |
| 418 | buf->n_used = -1; |
| 419 | |
| 420 | return buf->n_used; |
| 421 | } |
| 422 | |
| 423 | static int |
| 424 | arit_d (struct buffer *buf, disassemble_info * info, char *txt) |
| 425 | { |
| 426 | char mytxt[TXTSIZ]; |
| 427 | signed char c; |
| 428 | |
| 429 | c = buf->data[buf->n_fetch - 1]; |
| 430 | snprintf (mytxt, TXTSIZ, txt, arit_str[(c >> 3) & 7]); |
| 431 | return prt_d (buf, info, mytxt); |
| 432 | } |
| 433 | |
| 434 | static int |
| 435 | ld_r_d (struct buffer *buf, disassemble_info * info, char *txt) |
| 436 | { |
| 437 | char mytxt[TXTSIZ]; |
| 438 | signed char c; |
| 439 | |
| 440 | c = buf->data[buf->n_fetch - 1]; |
| 441 | snprintf (mytxt, TXTSIZ, txt, r_str[(c >> 3) & 7]); |
| 442 | return prt_d (buf, info, mytxt); |
| 443 | } |
| 444 | |
| 445 | static int |
| 446 | ld_d_r(struct buffer *buf, disassemble_info * info, char *txt) |
| 447 | { |
| 448 | char mytxt[TXTSIZ]; |
| 449 | signed char c; |
| 450 | |
| 451 | c = buf->data[buf->n_fetch - 1]; |
| 452 | snprintf (mytxt, TXTSIZ, txt, r_str[c & 7]); |
| 453 | return prt_d (buf, info, mytxt); |
| 454 | } |
| 455 | |
| 456 | static int |
| 457 | pref_xd_cb (struct buffer * buf, disassemble_info * info, char* txt) |
| 458 | { |
| 459 | if (fetch_data (buf, info, 2)) |
| 460 | { |
| 461 | int d; |
| 462 | char arg[TXTSIZ]; |
| 463 | signed char *p; |
| 464 | |
| 465 | buf->n_used = 4; |
| 466 | p = buf->data; |
| 467 | d = p[2]; |
| 468 | |
| 469 | if (((p[3] & 0xC0) == 0x40) || ((p[3] & 7) == 0x06)) |
| 470 | snprintf (arg, TXTSIZ, "(%s%+d)", txt, d); |
| 471 | else |
| 472 | snprintf (arg, TXTSIZ, "(%s%+d),%s", txt, d, r_str[p[3] & 7]); |
| 473 | |
| 474 | if ((p[3] & 0xc0) == 0) |
| 475 | info->fprintf_func (info->stream, "%s %s", |
| 476 | cb2_str[(buf->data[3] >> 3) & 7], |
| 477 | arg); |
| 478 | else |
| 479 | info->fprintf_func (info->stream, "%s %d,%s", |
| 480 | cb1_str[(buf->data[3] >> 6) & 3], |
| 481 | (buf->data[3] >> 3) & 7, |
| 482 | arg); |
| 483 | } |
| 484 | else |
| 485 | buf->n_used = -1; |
| 486 | |
| 487 | return buf->n_used; |
| 488 | } |
| 489 | \f |
| 490 | /* Table to disassemble machine codes with prefix 0xDD or 0xFD. */ |
| 491 | static struct tab_elt opc_ind[] = |
| 492 | { |
| 493 | { 0x24, 0xF7, prt_r, "inc %s%%s" }, |
| 494 | { 0x25, 0xF7, prt_r, "dec %s%%s" }, |
| 495 | { 0x26, 0xF7, ld_r_n, "ld %s%%s,0x%%%%02x" }, |
| 496 | { 0x21, 0xFF, prt_nn, "ld %s,0x%%04x" }, |
| 497 | { 0x22, 0xFF, prt_nn, "ld (0x%%04x),%s" }, |
| 498 | { 0x2A, 0xFF, prt_nn, "ld %s,(0x%%04x)" }, |
| 499 | { 0x23, 0xFF, prt, "inc %s" }, |
| 500 | { 0x2B, 0xFF, prt, "dec %s" }, |
| 501 | { 0x29, 0xFF, addvv, "%s" }, |
| 502 | { 0x09, 0xCF, prt_rr, "add %s," }, |
| 503 | { 0x34, 0xFF, prt_d, "inc (%s%%+d)" }, |
| 504 | { 0x35, 0xFF, prt_d, "dec (%s%%+d)" }, |
| 505 | { 0x36, 0xFF, prt_d_n, "ld (%s%%+d),0x%%%%02x" }, |
| 506 | |
| 507 | { 0x76, 0xFF, dump, "h" }, |
| 508 | { 0x46, 0xC7, ld_r_d, "ld %%s,(%s%%%%+d)" }, |
| 509 | { 0x70, 0xF8, ld_d_r, "ld (%s%%%%+d),%%s" }, |
| 510 | { 0x64, 0xF6, ld_v_v, "%s" }, |
| 511 | { 0x60, 0xF0, ld_r_r, "ld %s%%s,%%s" }, |
| 512 | { 0x44, 0xC6, ld_r_r, "ld %%s,%s%%s" }, |
| 513 | |
| 514 | { 0x86, 0xC7, arit_d, "%%s(%s%%%%+d)" }, |
| 515 | { 0x84, 0xC6, arit_r, "%%s%s%%s" }, |
| 516 | |
| 517 | { 0xE1, 0xFF, prt, "pop %s" }, |
| 518 | { 0xE5, 0xFF, prt, "push %s" }, |
| 519 | { 0xCB, 0xFF, pref_xd_cb, "%s" }, |
| 520 | { 0xE3, 0xFF, prt, "ex (sp),%s" }, |
| 521 | { 0xE9, 0xFF, prt, "jp (%s)" }, |
| 522 | { 0xF9, 0xFF, prt, "ld sp,%s" }, |
| 523 | { 0x00, 0x00, dump, "?" }, |
| 524 | } ; |
| 525 | |
| 526 | static int |
| 527 | pref_ind (struct buffer * buf, disassemble_info * info, char* txt) |
| 528 | { |
| 529 | if (fetch_data (buf, info, 1)) |
| 530 | { |
| 531 | char mytxt[TXTSIZ]; |
| 532 | struct tab_elt *p; |
| 533 | |
| 534 | for (p = opc_ind; p->val != (buf->data[1] & p->mask); ++p) |
| 535 | ; |
| 536 | snprintf (mytxt, TXTSIZ, p->text, txt); |
| 537 | p->fp (buf, info, mytxt); |
| 538 | } |
| 539 | else |
| 540 | buf->n_used = -1; |
| 541 | |
| 542 | return buf->n_used; |
| 543 | } |
| 544 | |
| 545 | /* Table to disassemble machine codes without prefix. */ |
| 546 | static struct tab_elt opc_main[] = |
| 547 | { |
| 548 | { 0x00, 0xFF, prt, "nop" }, |
| 549 | { 0x01, 0xCF, prt_rr_nn, "ld %s,0x%%04x" }, |
| 550 | { 0x02, 0xFF, prt, "ld (bc),a" }, |
| 551 | { 0x03, 0xCF, prt_rr, "inc " }, |
| 552 | { 0x04, 0xC7, prt_r, "inc %s" }, |
| 553 | { 0x05, 0xC7, prt_r, "dec %s" }, |
| 554 | { 0x06, 0xC7, ld_r_n, "ld %s,0x%%02x" }, |
| 555 | { 0x07, 0xFF, prt, "rlca" }, |
| 556 | { 0x08, 0xFF, prt, "ex af,af'" }, |
| 557 | { 0x09, 0xCF, prt_rr, "add hl," }, |
| 558 | { 0x0A, 0xFF, prt, "ld a,(bc)" }, |
| 559 | { 0x0B, 0xCF, prt_rr, "dec " }, |
| 560 | { 0x0F, 0xFF, prt, "rrca" }, |
| 561 | { 0x10, 0xFF, prt_e, "djnz " }, |
| 562 | { 0x12, 0xFF, prt, "ld (de),a" }, |
| 563 | { 0x17, 0xFF, prt, "rla" }, |
| 564 | { 0x18, 0xFF, prt_e, "jr "}, |
| 565 | { 0x1A, 0xFF, prt, "ld a,(de)" }, |
| 566 | { 0x1F, 0xFF, prt, "rra" }, |
| 567 | { 0x20, 0xE7, jr_cc, "jr %s,"}, |
| 568 | { 0x22, 0xFF, prt_nn, "ld (0x%04x),hl" }, |
| 569 | { 0x27, 0xFF, prt, "daa"}, |
| 570 | { 0x2A, 0xFF, prt_nn, "ld hl,(0x%04x)" }, |
| 571 | { 0x2F, 0xFF, prt, "cpl" }, |
| 572 | { 0x32, 0xFF, prt_nn, "ld (0x%04x),a" }, |
| 573 | { 0x37, 0xFF, prt, "scf" }, |
| 574 | { 0x3A, 0xFF, prt_nn, "ld a,(0x%04x)" }, |
| 575 | { 0x3F, 0xFF, prt, "ccf" }, |
| 576 | |
| 577 | { 0x76, 0xFF, prt, "halt" }, |
| 578 | { 0x40, 0xC0, ld_r_r, "ld %s,%s"}, |
| 579 | |
| 580 | { 0x80, 0xC0, arit_r, "%s%s" }, |
| 581 | |
| 582 | { 0xC0, 0xC7, prt_cc, "ret " }, |
| 583 | { 0xC1, 0xCF, pop_rr, "pop" }, |
| 584 | { 0xC2, 0xC7, jp_cc_nn, "jp " }, |
| 585 | { 0xC3, 0xFF, prt_nn, "jp 0x%04x" }, |
| 586 | { 0xC4, 0xC7, jp_cc_nn, "call " }, |
| 587 | { 0xC5, 0xCF, pop_rr, "push" }, |
| 588 | { 0xC6, 0xC7, arit_n, "%s0x%%02x" }, |
| 589 | { 0xC7, 0xC7, rst, "rst 0x%02x" }, |
| 590 | { 0xC9, 0xFF, prt, "ret" }, |
| 591 | { 0xCB, 0xFF, pref_cb, "" }, |
| 592 | { 0xCD, 0xFF, prt_nn, "call 0x%04x" }, |
| 593 | { 0xD3, 0xFF, prt_n, "out (0x%02x),a" }, |
| 594 | { 0xD9, 0xFF, prt, "exx" }, |
| 595 | { 0xDB, 0xFF, prt_n, "in a,(0x%02x)" }, |
| 596 | { 0xDD, 0xFF, pref_ind, "ix" }, |
| 597 | { 0xE3, 0xFF, prt, "ex (sp),hl" }, |
| 598 | { 0xE9, 0xFF, prt, "jp (hl)" }, |
| 599 | { 0xEB, 0xFF, prt, "ex de,hl" }, |
| 600 | { 0xED, 0xFF, pref_ed, ""}, |
| 601 | { 0xF3, 0xFF, prt, "di" }, |
| 602 | { 0xF9, 0xFF, prt, "ld sp,hl" }, |
| 603 | { 0xFB, 0xFF, prt, "ei" }, |
| 604 | { 0xFD, 0xFF, pref_ind, "iy" }, |
| 605 | { 0x00, 0x00, prt, "????" }, |
| 606 | } ; |
| 607 | |
| 608 | int |
| 609 | print_insn_z80 (bfd_vma addr, disassemble_info * info) |
| 610 | { |
| 611 | struct buffer buf; |
| 612 | struct tab_elt *p; |
| 613 | |
| 614 | buf.base = addr; |
| 615 | buf.n_fetch = 0; |
| 616 | buf.n_used = 0; |
| 617 | |
| 618 | if (! fetch_data (& buf, info, 1)) |
| 619 | return -1; |
| 620 | |
| 621 | for (p = opc_main; p->val != (buf.data[0] & p->mask); ++p) |
| 622 | ; |
| 623 | p->fp (& buf, info, p->text); |
| 624 | |
| 625 | return buf.n_used; |
| 626 | } |