2 This file is part of GNU Binutils.
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
31 /* These are all indexed by nibble number (i.e only every other entry
32 of bytes is used, and every 4th entry of words). */
33 unsigned char nibbles[24];
34 unsigned char bytes[24];
35 unsigned short words[24];
37 /* Nibble number of first word not yet fetched. */
43 char instr_asmsrc[80];
44 unsigned long arg_reg[0x0f];
45 unsigned long immediate;
46 unsigned long displacement;
47 unsigned long address;
48 unsigned long cond_code;
49 unsigned long ctrl_code;
51 unsigned long interrupts;
55 /* Make sure that bytes from INFO->PRIVATE_DATA->BUFFER (inclusive)
56 to ADDR (exclusive) are valid. Returns 1 for success, longjmps
58 #define FETCH_DATA(info, nibble) \
59 ((nibble) <= ((instr_data_s *)(info->private_data))->max_fetched \
60 ? 1 : fetch_data ((info), (nibble)))
63 fetch_data (info, nibble)
64 struct disassemble_info *info;
69 instr_data_s *priv = (instr_data_s *)info->private_data;
70 bfd_vma start = priv->insn_start + priv->max_fetched / 2;
72 if ((nibble % 4) != 0)
74 status = (*info->read_memory_func) (start,
76 (nibble - priv->max_fetched) / 2,
80 (*info->memory_error_func) (status, start, info);
81 longjmp (priv->bailout);
86 char *p = mybuf + priv->max_fetched / 2;
88 for (i = priv->max_fetched; i < nibble;)
90 priv->words[i] = (p[0] << 8) | p[1];
93 priv->nibbles[i++] = *p >> 4;
94 priv->nibbles[i++] = *p &0xf;
98 priv->nibbles[i++] = *p >> 4;
99 priv->nibbles[i++] = *p & 0xf;
104 priv->max_fetched = nibble;
108 static char *codes[16] =
128 int z8k_lookup_instr PARAMS ((unsigned char*, disassemble_info *));
129 static void output_instr
130 PARAMS ((instr_data_s *, unsigned long, disassemble_info *));
131 static void unpack_instr PARAMS ((instr_data_s *, int, disassemble_info *));
132 static void unparse_instr PARAMS ((instr_data_s *));
135 print_insn_z8k (addr, info, is_segmented)
137 disassemble_info *info;
140 instr_data_s instr_data;
142 info->private_data = (PTR) &instr_data;
143 instr_data.max_fetched = 0;
144 instr_data.insn_start = addr;
145 if (setjmp (instr_data.bailout) != 0)
149 instr_data.tabl_index = z8k_lookup_instr (instr_data.nibbles, info);
150 if (instr_data.tabl_index > 0)
152 unpack_instr (&instr_data, is_segmented, info);
153 unparse_instr (&instr_data);
154 output_instr (&instr_data, addr, info);
155 return z8k_table[instr_data.tabl_index].length;
159 FETCH_DATA (info, 4);
160 (*info->fprintf_func) (info->stream, ".word %02x%02x",
161 instr_data.bytes[0], instr_data.bytes[2]);
166 print_insn_z8001 (addr, info)
168 disassemble_info *info;
170 return print_insn_z8k (addr, info, 1);
173 print_insn_z8002 (addr, info)
175 disassemble_info *info;
177 return print_insn_z8k (addr, info, 0);
181 z8k_lookup_instr (nibbles, info)
182 unsigned char *nibbles;
183 disassemble_info *info;
186 int nibl_index, tabl_index;
188 unsigned short instr_nibl;
189 unsigned short tabl_datum, datum_class, datum_value;
193 while (!nibl_matched && z8k_table[tabl_index].name)
196 for (nibl_index = 0; nibl_index < z8k_table[tabl_index].length * 2 && nibl_matched; nibl_index++)
198 if ((nibl_index % 4) == 0)
199 /* Fetch one word at a time. */
200 FETCH_DATA (info, nibl_index + 4);
201 instr_nibl = nibbles[nibl_index];
203 tabl_datum = z8k_table[tabl_index].byte_info[nibl_index];
204 datum_class = tabl_datum & CLASS_MASK;
205 datum_value = ~CLASS_MASK & tabl_datum;
210 if (datum_value != instr_nibl)
214 if (!((~instr_nibl) & 0x4))
218 if (!(instr_nibl & 0x4))
222 if (!((~instr_nibl) & 0x8))
226 if (!(instr_nibl & 0x8))
230 if (!((~instr_nibl) & 0x8))
235 if (!(instr_nibl & 0x8))
244 if ((instr_nibl | 0x2) != (datum_value | 0x2))
263 output_instr (instr_data, addr, info)
264 instr_data_s *instr_data;
266 disassemble_info *info;
268 int loop, loop_limit;
272 strcpy (out_str, "\t");
274 loop_limit = z8k_table[instr_data->tabl_index].length * 2;
275 FETCH_DATA (info, loop_limit);
276 for (loop = 0; loop < loop_limit; loop++)
278 sprintf (tmp_str, "%x", instr_data->nibbles[loop]);
279 strcat (out_str, tmp_str);
284 strcat (out_str, " ");
287 strcat (out_str, instr_data->instr_asmsrc);
289 (*info->fprintf_func) (info->stream, "%s", out_str);
293 unpack_instr (instr_data, is_segmented, info)
294 instr_data_s *instr_data;
296 disassemble_info *info;
298 int nibl_count, loop;
299 unsigned short instr_nibl, instr_byte, instr_word;
301 unsigned short tabl_datum, datum_class, datum_value;
305 while (z8k_table[instr_data->tabl_index].byte_info[loop] != 0)
307 FETCH_DATA (info, nibl_count + 4 - (nibl_count % 4));
308 instr_nibl = instr_data->nibbles[nibl_count];
309 instr_byte = instr_data->bytes[nibl_count];
310 instr_word = instr_data->words[nibl_count];
312 tabl_datum = z8k_table[instr_data->tabl_index].byte_info[loop];
313 datum_class = tabl_datum & CLASS_MASK;
314 datum_value = tabl_datum & ~CLASS_MASK;
319 instr_data->address = instr_nibl;
322 instr_data->displacement = instr_nibl;
325 instr_data->arg_reg[datum_value] = instr_nibl;
331 instr_data->displacement = instr_word;
335 instr_data->displacement = instr_word & 0x0fff;
346 instr_data->immediate = instr_nibl;
349 instr_data->immediate = (-instr_byte);
353 instr_data->immediate = instr_byte;
357 instr_data->immediate = instr_word;
361 FETCH_DATA (info, nibl_count + 8);
362 instr_long = (instr_data->words[nibl_count] << 16)
363 | (instr_data->words[nibl_count + 4]);
364 instr_data->immediate = instr_long;
368 instr_data->immediate = instr_nibl - 1;
371 /* missing ARG_IMMNMINUS1 */
373 instr_data->immediate = 1;
376 instr_data->immediate = 2;
379 instr_data->immediate = instr_nibl & 0x3;
386 instr_data->cond_code = instr_nibl;
389 instr_data->ctrl_code = instr_nibl;
395 if (instr_nibl & 0x8)
397 FETCH_DATA (info, nibl_count + 8);
398 instr_long = (instr_data->words[nibl_count] << 16)
399 | (instr_data->words[nibl_count + 4]);
400 instr_data->address = ((instr_word & 0x7f00) << 8) +
401 (instr_long & 0xffff);
406 instr_data->address = ((instr_word & 0x7f00) << 8) +
407 (instr_word & 0x00ff);
413 instr_data->address = instr_word;
418 instr_data->cond_code = instr_nibl & 0x7;
421 instr_data->cond_code = instr_nibl & 0x7;
424 instr_data->displacement = instr_byte & 0x7f;
428 instr_data->displacement = instr_byte & 0x7f;
432 instr_data->interrupts = instr_nibl & 0x3;
435 instr_data->interrupts = instr_nibl & 0x3;
441 instr_data->arg_reg[datum_value] = instr_nibl;
444 instr_data->flags = instr_nibl;
447 instr_data->arg_reg[datum_value] = instr_nibl;
450 instr_data->arg_reg[datum_value] = instr_nibl;
453 instr_data->arg_reg[datum_value] = instr_nibl;
456 instr_data->arg_reg[datum_value] = instr_nibl;
459 instr_data->arg_reg[datum_value] = instr_nibl;
462 instr_data->arg_reg[datum_value] = instr_nibl;
474 unparse_instr (instr_data)
475 instr_data_s *instr_data;
477 unsigned short tabl_datum, datum_class, datum_value;
478 int loop, loop_limit;
479 char out_str[80], tmp_str[25];
481 sprintf (out_str, "\t%s\t", z8k_table[instr_data->tabl_index].name);
483 loop_limit = z8k_table[instr_data->tabl_index].noperands;
484 for (loop = 0; loop < loop_limit; loop++)
487 strcat (out_str, ",");
489 tabl_datum = z8k_table[instr_data->tabl_index].arg_info[loop];
490 datum_class = tabl_datum & CLASS_MASK;
491 datum_value = tabl_datum & ~CLASS_MASK;
496 sprintf (tmp_str, "0x%0x(R%d)", instr_data->address,
497 instr_data->arg_reg[datum_value]);
498 strcat (out_str, tmp_str);
501 sprintf (tmp_str, "r%d(#%x)", instr_data->arg_reg[datum_value],
502 instr_data->immediate);
503 strcat (out_str, tmp_str);
506 sprintf (tmp_str, "r%d(R%d)", instr_data->arg_reg[datum_value],
507 instr_data->arg_reg[ARG_RX]);
508 strcat (out_str, tmp_str);
511 sprintf (tmp_str, "#0x%0x", instr_data->displacement);
512 strcat (out_str, tmp_str);
515 sprintf (tmp_str, "#0x%0x", instr_data->immediate);
516 strcat (out_str, tmp_str);
519 sprintf (tmp_str, "%s", codes[instr_data->cond_code]);
520 strcat (out_str, tmp_str);
523 sprintf (tmp_str, "0x%0x", instr_data->ctrl_code);
524 strcat (out_str, tmp_str);
528 sprintf (tmp_str, "#0x%0x", instr_data->address);
529 strcat (out_str, tmp_str);
532 sprintf (tmp_str, "@R%d", instr_data->arg_reg[datum_value]);
533 strcat (out_str, tmp_str);
536 sprintf (tmp_str, "0x%0x", instr_data->flags);
537 strcat (out_str, tmp_str);
540 if (instr_data->arg_reg[datum_value] >= 0x8)
542 sprintf (tmp_str, "rl%d",
543 instr_data->arg_reg[datum_value] - 0x8);
547 sprintf (tmp_str, "rh%d", instr_data->arg_reg[datum_value]);
549 strcat (out_str, tmp_str);
552 sprintf (tmp_str, "r%d", instr_data->arg_reg[datum_value]);
553 strcat (out_str, tmp_str);
556 sprintf (tmp_str, "rq%d", instr_data->arg_reg[datum_value]);
557 strcat (out_str, tmp_str);
560 sprintf (tmp_str, "rr%d", instr_data->arg_reg[datum_value]);
561 strcat (out_str, tmp_str);
568 strcpy (instr_data->instr_asmsrc, out_str);