1 /* Disassemble MN10300 instructions.
2 Copyright (C) 1996, 1997, 1998 Free Software Foundation, Inc.
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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
22 #include "opcode/mn10300.h"
26 static void disassemble PARAMS ((bfd_vma, struct disassemble_info *,
27 unsigned long insn, unsigned int));
30 print_insn_mn10300 (memaddr, info)
32 struct disassemble_info *info;
39 /* First figure out how big the opcode is. */
40 status = (*info->read_memory_func) (memaddr, buffer, 1, info);
43 (*info->memory_error_func) (status, memaddr, info);
46 insn = *(unsigned char *) buffer;
48 /* These are one byte insns. */
49 if ((insn & 0xf3) == 0x00
50 || (insn & 0xf0) == 0x10
51 || (insn & 0xfc) == 0x3c
52 || (insn & 0xf3) == 0x41
53 || (insn & 0xf3) == 0x40
54 || (insn & 0xfc) == 0x50
55 || (insn & 0xfc) == 0x54
56 || (insn & 0xf0) == 0x60
57 || (insn & 0xf0) == 0x70
58 || ((insn & 0xf0) == 0x80
59 && (insn & 0x0c) >> 2 != (insn & 0x03))
60 || ((insn & 0xf0) == 0x90
61 && (insn & 0x0c) >> 2 != (insn & 0x03))
62 || ((insn & 0xf0) == 0xa0
63 && (insn & 0x0c) >> 2 != (insn & 0x03))
64 || ((insn & 0xf0) == 0xb0
65 && (insn & 0x0c) >> 2 != (insn & 0x03))
66 || (insn & 0xff) == 0xcb
67 || (insn & 0xfc) == 0xd0
68 || (insn & 0xfc) == 0xd4
69 || (insn & 0xfc) == 0xd8
70 || (insn & 0xf0) == 0xe0
71 || (insn & 0xff) == 0xff)
76 /* These are two byte insns. */
77 else if ((insn & 0xf0) == 0x80
78 || (insn & 0xf0) == 0x90
79 || (insn & 0xf0) == 0xa0
80 || (insn & 0xf0) == 0xb0
81 || (insn & 0xfc) == 0x20
82 || (insn & 0xfc) == 0x28
83 || (insn & 0xf3) == 0x43
84 || (insn & 0xf3) == 0x42
85 || (insn & 0xfc) == 0x58
86 || (insn & 0xfc) == 0x5c
87 || ((insn & 0xf0) == 0xc0
88 && (insn & 0xff) != 0xcb
89 && (insn & 0xff) != 0xcc
90 && (insn & 0xff) != 0xcd)
91 || (insn & 0xff) == 0xf0
92 || (insn & 0xff) == 0xf1
93 || (insn & 0xff) == 0xf2
94 || (insn & 0xff) == 0xf3
95 || (insn & 0xff) == 0xf4
96 || (insn & 0xff) == 0xf5
97 || (insn & 0xff) == 0xf6)
99 status = (*info->read_memory_func) (memaddr, buffer, 2, info);
102 (*info->memory_error_func) (status, memaddr, info);
105 insn = bfd_getb16 (buffer);
109 /* These are three byte insns. */
110 else if ((insn & 0xff) == 0xf8
111 || (insn & 0xff) == 0xcc
112 || (insn & 0xff) == 0xf9
113 || (insn & 0xf3) == 0x01
114 || (insn & 0xf3) == 0x02
115 || (insn & 0xf3) == 0x03
116 || (insn & 0xfc) == 0x24
117 || (insn & 0xfc) == 0x2c
118 || (insn & 0xfc) == 0x30
119 || (insn & 0xfc) == 0x34
120 || (insn & 0xfc) == 0x38
121 || (insn & 0xff) == 0xde
122 || (insn & 0xff) == 0xdf
123 /* start-sanitize-am33 */
124 || (insn & 0xff) == 0xf9
125 /* end-sanitize-am33 */
126 || (insn & 0xff) == 0xcc)
128 status = (*info->read_memory_func) (memaddr, buffer, 2, info);
131 (*info->memory_error_func) (status, memaddr, info);
134 insn = bfd_getb16 (buffer);
136 status = (*info->read_memory_func) (memaddr + 2, buffer, 1, info);
139 (*info->memory_error_func) (status, memaddr, info);
142 insn |= *(unsigned char *)buffer;
146 /* These are four byte insns. */
147 else if ((insn & 0xff) == 0xfa
148 || (insn & 0xff) == 0xfb)
150 status = (*info->read_memory_func) (memaddr, buffer, 4, info);
153 (*info->memory_error_func) (status, memaddr, info);
156 insn = bfd_getb32 (buffer);
160 /* These are five byte insns. */
161 else if ((insn & 0xff) == 0xcd
162 || (insn & 0xff) == 0xdc)
164 status = (*info->read_memory_func) (memaddr, buffer, 4, info);
167 (*info->memory_error_func) (status, memaddr, info);
170 insn = bfd_getb32 (buffer);
174 /* These are six byte insns. */
175 else if ((insn & 0xff) == 0xfd
176 || (insn & 0xff) == 0xfc)
178 status = (*info->read_memory_func) (memaddr, buffer, 4, info);
181 (*info->memory_error_func) (status, memaddr, info);
185 insn = bfd_getb32 (buffer);
189 /* Else its a seven byte insns (in theory). */
192 status = (*info->read_memory_func) (memaddr, buffer, 4, info);
195 (*info->memory_error_func) (status, memaddr, info);
199 insn = bfd_getb32 (buffer);
203 disassemble (memaddr, info, insn, consume);
209 disassemble (memaddr, info, insn, size)
211 struct disassemble_info *info;
215 struct mn10300_opcode *op = (struct mn10300_opcode *)mn10300_opcodes;
216 const struct mn10300_operand *operand;
218 unsigned long extension = 0;
219 int status, match = 0;
221 /* Find the opcode. */
224 int mysize, extra_shift;
226 if (op->format == FMT_S0)
228 else if (op->format == FMT_S1
229 || op->format == FMT_D0)
231 else if (op->format == FMT_S2
232 || op->format == FMT_D1)
234 else if (op->format == FMT_S4)
236 else if (op->format == FMT_D2)
238 else if (op->format == FMT_D4)
240 /* start-sanitize-am33 */
241 else if (op->format == FMT_D6)
243 else if (op->format == FMT_D7 || op->format == FMT_D10)
245 else if (op->format == FMT_D8)
247 else if (op->format == FMT_D9)
249 /* end-sanitize-am33 */
253 if ((op->mask & insn) == op->opcode
254 && size == (unsigned int) mysize)
256 const unsigned char *opindex_ptr;
257 unsigned int nocomma;
260 if (op->format == FMT_D1 || op->format == FMT_S1)
262 else if (op->format == FMT_D2 || op->format == FMT_D4
263 || op->format == FMT_S2 || op->format == FMT_S4
264 || op->format == FMT_S6 || op->format == FMT_D5)
266 /* start-sanitize-am33 */
267 else if (op->format == FMT_D7
268 || op->format == FMT_D8
269 || op->format == FMT_D9)
271 /* end-sanitize-am33 */
275 if (size == 1 || size == 2)
280 && (op->format == FMT_D1
281 || op->opcode == 0xdf0000
282 || op->opcode == 0xde0000))
286 /* start-sanitize-am33 */
288 && op->format == FMT_D6)
292 /* end-sanitize-am33 */
296 status = (*info->read_memory_func) (memaddr + 1, buffer, 2, info);
299 (*info->memory_error_func) (status, memaddr, info);
303 insn |= bfd_getl16 (buffer);
307 && (op->opcode == 0xfaf80000
308 || op->opcode == 0xfaf00000
309 || op->opcode == 0xfaf40000))
313 /* start-sanitize-am33 */
315 && op->format == FMT_D7)
319 /* end-sanitize-am33 */
323 status = (*info->read_memory_func) (memaddr + 2, buffer, 2, info);
326 (*info->memory_error_func) (status, memaddr, info);
330 insn |= bfd_getl16 (buffer);
333 else if (size == 5 && op->opcode == 0xdc000000)
335 unsigned long temp = 0;
336 status = (*info->read_memory_func) (memaddr + 1, buffer, 4, info);
339 (*info->memory_error_func) (status, memaddr, info);
342 temp |= bfd_getl32 (buffer);
345 insn |= (temp & 0xffffff00) >> 8;
346 extension = temp & 0xff;
350 unsigned long temp = 0;
351 status = (*info->read_memory_func) (memaddr + 1, buffer, 2, info);
354 (*info->memory_error_func) (status, memaddr, info);
357 temp |= bfd_getl16 (buffer);
362 status = (*info->read_memory_func) (memaddr + 4, buffer, 1, info);
365 (*info->memory_error_func) (status, memaddr, info);
368 extension = *(unsigned char *)buffer;
370 /* start-sanitize-am33 */
371 else if (size == 6 && op->format == FMT_D8)
374 status = (*info->read_memory_func) (memaddr + 5, buffer, 1, info);
377 (*info->memory_error_func) (status, memaddr, info);
380 insn |= *(unsigned char *)buffer;
382 status = (*info->read_memory_func) (memaddr + 3, buffer, 2, info);
385 (*info->memory_error_func) (status, memaddr, info);
388 extension = bfd_getl16 (buffer);
390 /* end-sanitize-am33 */
393 unsigned long temp = 0;
394 status = (*info->read_memory_func) (memaddr + 2, buffer, 4, info);
397 (*info->memory_error_func) (status, memaddr, info);
400 temp |= bfd_getl32 (buffer);
403 insn |= (temp >> 16) & 0xffff;
404 extension = temp & 0xffff;
406 /* start-sanitize-am33 */
407 else if (size == 7 && op->format == FMT_D9)
410 status = (*info->read_memory_func) (memaddr + 3, buffer, 4, info);
413 (*info->memory_error_func) (status, memaddr, info);
416 extension = bfd_getl32 (buffer);
417 insn |= (extension & 0xff000000) >> 24;
418 extension &= 0xffffff;
420 /* end-sanitize-am33 */
421 else if (size == 7 && op->opcode == 0xdd000000)
423 unsigned long temp = 0;
424 status = (*info->read_memory_func) (memaddr + 1, buffer, 4, info);
427 (*info->memory_error_func) (status, memaddr, info);
430 temp |= bfd_getl32 (buffer);
433 insn |= (temp >> 8) & 0xffffff;
434 extension = (temp & 0xff) << 16;
436 status = (*info->read_memory_func) (memaddr + 5, buffer, 2, info);
439 (*info->memory_error_func) (status, memaddr, info);
442 extension |= bfd_getb16 (buffer);
446 unsigned long temp = 0;
447 status = (*info->read_memory_func) (memaddr + 2, buffer, 4, info);
450 (*info->memory_error_func) (status, memaddr, info);
453 temp |= bfd_getl32 (buffer);
456 insn |= (temp >> 16) & 0xffff;
457 extension = (temp & 0xffff) << 8;
459 status = (*info->read_memory_func) (memaddr + 6, buffer, 1, info);
462 (*info->memory_error_func) (status, memaddr, info);
465 extension |= *(unsigned char *)buffer;
469 (*info->fprintf_func) (info->stream, "%s\t", op->name);
471 /* Now print the operands. */
472 for (opindex_ptr = op->operands, nocomma = 1;
478 operand = &mn10300_operands[*opindex_ptr];
480 if ((operand->flags & MN10300_OPERAND_SPLIT) != 0)
483 value = insn & ((1 << operand->bits) - 1);
484 value <<= (32 - operand->bits);
485 temp = extension >> operand->shift;
486 temp &= ((1 << (32 - operand->bits)) - 1);
489 /* start-sanitize-am33 */
490 else if ((operand->flags & MN10300_OPERAND_24BIT) != 0)
493 value = insn & ((1 << operand->bits) - 1);
494 value <<= (24 - operand->bits);
495 temp = extension >> operand->shift;
496 temp &= ((1 << (24 - operand->bits)) - 1);
498 if ((operand->flags & MN10300_OPERAND_SIGNED) != 0)
499 value = ((value & 0xffffff) ^ (~0x7fffff)) + 0x800000;
501 /* end-sanitize-am33 */
502 else if ((operand->flags & MN10300_OPERAND_EXTENDED) != 0)
504 value = ((extension >> (operand->shift))
505 & ((1 << operand->bits) - 1));
509 value = ((insn >> (operand->shift))
510 & ((1 << operand->bits) - 1));
513 if ((operand->flags & MN10300_OPERAND_SIGNED) != 0
514 /* start-sanitize-am33 */
515 /* These are properly extended by the code above. */
516 && ((operand->flags & MN10300_OPERAND_24BIT) == 0)
517 /* end-sanitize-am33 */
519 value = ((long)(value << (32 - operand->bits))
520 >> (32 - operand->bits));
524 || ((operand->flags & MN10300_OPERAND_PAREN) == 0)))
525 (*info->fprintf_func) (info->stream, ",");
529 if ((operand->flags & MN10300_OPERAND_DREG) != 0)
531 value = ((insn >> (operand->shift + extra_shift))
532 & ((1 << operand->bits) - 1));
533 (*info->fprintf_func) (info->stream, "d%d", value);
536 else if ((operand->flags & MN10300_OPERAND_AREG) != 0)
538 value = ((insn >> (operand->shift + extra_shift))
539 & ((1 << operand->bits) - 1));
540 (*info->fprintf_func) (info->stream, "a%d", value);
543 else if ((operand->flags & MN10300_OPERAND_SP) != 0)
544 (*info->fprintf_func) (info->stream, "sp");
546 else if ((operand->flags & MN10300_OPERAND_PSW) != 0)
547 (*info->fprintf_func) (info->stream, "psw");
549 else if ((operand->flags & MN10300_OPERAND_MDR) != 0)
550 (*info->fprintf_func) (info->stream, "mdr");
552 /* start-sanitize-am33 */
553 else if ((operand->flags & MN10300_OPERAND_RREG) != 0)
555 value = ((insn >> (operand->shift + extra_shift))
556 & ((1 << operand->bits) - 1));
557 (*info->fprintf_func) (info->stream, "r%d", value);
560 else if ((operand->flags & MN10300_OPERAND_XRREG) != 0)
562 value = ((insn >> (operand->shift + extra_shift))
563 & ((1 << operand->bits) - 1));
564 (*info->fprintf_func) (info->stream, "xr%d", value);
567 else if ((operand->flags & MN10300_OPERAND_USP) != 0)
568 (*info->fprintf_func) (info->stream, "usp");
570 else if ((operand->flags & MN10300_OPERAND_SSP) != 0)
571 (*info->fprintf_func) (info->stream, "ssp");
573 else if ((operand->flags & MN10300_OPERAND_MSP) != 0)
574 (*info->fprintf_func) (info->stream, "msp");
576 else if ((operand->flags & MN10300_OPERAND_PC) != 0)
577 (*info->fprintf_func) (info->stream, "pc");
579 else if ((operand->flags & MN10300_OPERAND_EPSW) != 0)
580 (*info->fprintf_func) (info->stream, "epsw");
582 else if ((operand->flags & MN10300_OPERAND_PLUS) != 0)
583 (*info->fprintf_func) (info->stream, "+");
584 /* end-sanitize-am33 */
586 else if ((operand->flags & MN10300_OPERAND_PAREN) != 0)
589 (*info->fprintf_func) (info->stream, ")");
592 (*info->fprintf_func) (info->stream, "(");
598 else if ((operand->flags & MN10300_OPERAND_PCREL) != 0)
599 (*info->print_address_func) ((long) value + memaddr, info);
601 else if ((operand->flags & MN10300_OPERAND_MEMADDR) != 0)
602 (*info->print_address_func) (value, info);
604 else if ((operand->flags & MN10300_OPERAND_REG_LIST) != 0)
608 (*info->fprintf_func) (info->stream, "[");
611 (*info->fprintf_func) (info->stream, "d2");
618 (*info->fprintf_func) (info->stream, ",");
619 (*info->fprintf_func) (info->stream, "d3");
626 (*info->fprintf_func) (info->stream, ",");
627 (*info->fprintf_func) (info->stream, "a2");
634 (*info->fprintf_func) (info->stream, ",");
635 (*info->fprintf_func) (info->stream, "a3");
642 (*info->fprintf_func) (info->stream, ",");
643 (*info->fprintf_func) (info->stream, "other");
647 /* start-sanitize-am33 */
651 (*info->fprintf_func) (info->stream, ",");
652 (*info->fprintf_func) (info->stream, "exreg0");
658 (*info->fprintf_func) (info->stream, ",");
659 (*info->fprintf_func) (info->stream, "exreg1");
665 (*info->fprintf_func) (info->stream, ",");
666 (*info->fprintf_func) (info->stream, "exother");
669 /* end-sanitize-am33 */
670 (*info->fprintf_func) (info->stream, "]");
674 (*info->fprintf_func) (info->stream, "%d", value);
684 /* xgettext:c-format */
685 (*info->fprintf_func) (info->stream, _("unknown\t0x%04x"), insn);