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 || (insn & 0xff) == 0xf9
124 || (insn & 0xff) == 0xcc)
126 status = (*info->read_memory_func) (memaddr, buffer, 2, info);
129 (*info->memory_error_func) (status, memaddr, info);
132 insn = bfd_getb16 (buffer);
134 status = (*info->read_memory_func) (memaddr + 2, buffer, 1, info);
137 (*info->memory_error_func) (status, memaddr, info);
140 insn |= *(unsigned char *)buffer;
144 /* These are four byte insns. */
145 else if ((insn & 0xff) == 0xfa
146 || (insn & 0xff) == 0xf7
147 || (insn & 0xff) == 0xfb)
149 status = (*info->read_memory_func) (memaddr, buffer, 4, info);
152 (*info->memory_error_func) (status, memaddr, info);
155 insn = bfd_getb32 (buffer);
159 /* These are five byte insns. */
160 else if ((insn & 0xff) == 0xcd
161 || (insn & 0xff) == 0xdc)
163 status = (*info->read_memory_func) (memaddr, buffer, 4, info);
166 (*info->memory_error_func) (status, memaddr, info);
169 insn = bfd_getb32 (buffer);
173 /* These are six byte insns. */
174 else if ((insn & 0xff) == 0xfd
175 || (insn & 0xff) == 0xfc)
177 status = (*info->read_memory_func) (memaddr, buffer, 4, info);
180 (*info->memory_error_func) (status, memaddr, info);
184 insn = bfd_getb32 (buffer);
188 /* Else its a seven byte insns (in theory). */
191 status = (*info->read_memory_func) (memaddr, buffer, 4, info);
194 (*info->memory_error_func) (status, memaddr, info);
198 insn = bfd_getb32 (buffer);
202 disassemble (memaddr, info, insn, consume);
208 disassemble (memaddr, info, insn, size)
210 struct disassemble_info *info;
214 struct mn10300_opcode *op = (struct mn10300_opcode *)mn10300_opcodes;
215 const struct mn10300_operand *operand;
217 unsigned long extension = 0;
218 int status, match = 0;
220 /* Find the opcode. */
223 int mysize, extra_shift;
225 if (op->format == FMT_S0)
227 else if (op->format == FMT_S1
228 || op->format == FMT_D0)
230 else if (op->format == FMT_S2
231 || op->format == FMT_D1)
233 else if (op->format == FMT_S4)
235 else if (op->format == FMT_D2)
237 else if (op->format == FMT_D4)
239 else if (op->format == FMT_D6)
241 else if (op->format == FMT_D7 || op->format == FMT_D10)
243 else if (op->format == FMT_D8)
245 else if (op->format == FMT_D9)
250 if ((op->mask & insn) == op->opcode
251 && size == (unsigned int) mysize
253 || op->machine == info->mach))
255 const unsigned char *opindex_ptr;
256 unsigned int nocomma;
259 if (op->format == FMT_D1 || op->format == FMT_S1)
261 else if (op->format == FMT_D2 || op->format == FMT_D4
262 || op->format == FMT_S2 || op->format == FMT_S4
263 || op->format == FMT_S6 || op->format == FMT_D5)
265 else if (op->format == FMT_D7
266 || op->format == FMT_D8
267 || op->format == FMT_D9)
272 if (size == 1 || size == 2)
277 && (op->format == FMT_D1
278 || op->opcode == 0xdf0000
279 || op->opcode == 0xde0000))
284 && op->format == FMT_D6)
291 status = (*info->read_memory_func) (memaddr + 1, buffer, 2, info);
294 (*info->memory_error_func) (status, memaddr, info);
298 insn |= bfd_getl16 (buffer);
302 && (op->opcode == 0xfaf80000
303 || op->opcode == 0xfaf00000
304 || op->opcode == 0xfaf40000))
309 && (op->format == FMT_D7
310 || op->format == FMT_D10))
317 status = (*info->read_memory_func) (memaddr + 2, buffer, 2, info);
320 (*info->memory_error_func) (status, memaddr, info);
324 insn |= bfd_getl16 (buffer);
327 else if (size == 5 && op->opcode == 0xdc000000)
329 unsigned long temp = 0;
330 status = (*info->read_memory_func) (memaddr + 1, buffer, 4, info);
333 (*info->memory_error_func) (status, memaddr, info);
336 temp |= bfd_getl32 (buffer);
339 insn |= (temp & 0xffffff00) >> 8;
340 extension = temp & 0xff;
344 unsigned long temp = 0;
345 status = (*info->read_memory_func) (memaddr + 1, buffer, 2, info);
348 (*info->memory_error_func) (status, memaddr, info);
351 temp |= bfd_getl16 (buffer);
356 status = (*info->read_memory_func) (memaddr + 4, buffer, 1, info);
359 (*info->memory_error_func) (status, memaddr, info);
362 extension = *(unsigned char *)buffer;
364 else if (size == 6 && op->format == FMT_D8)
367 status = (*info->read_memory_func) (memaddr + 5, buffer, 1, info);
370 (*info->memory_error_func) (status, memaddr, info);
373 insn |= *(unsigned char *)buffer;
375 status = (*info->read_memory_func) (memaddr + 3, buffer, 2, info);
378 (*info->memory_error_func) (status, memaddr, info);
381 extension = bfd_getl16 (buffer);
385 unsigned long temp = 0;
386 status = (*info->read_memory_func) (memaddr + 2, buffer, 4, info);
389 (*info->memory_error_func) (status, memaddr, info);
392 temp |= bfd_getl32 (buffer);
395 insn |= (temp >> 16) & 0xffff;
396 extension = temp & 0xffff;
398 else if (size == 7 && op->format == FMT_D9)
401 status = (*info->read_memory_func) (memaddr + 3, buffer, 4, info);
404 (*info->memory_error_func) (status, memaddr, info);
407 extension = bfd_getl32 (buffer);
408 insn |= (extension & 0xff000000) >> 24;
409 extension &= 0xffffff;
411 else if (size == 7 && op->opcode == 0xdd000000)
413 unsigned long temp = 0;
414 status = (*info->read_memory_func) (memaddr + 1, buffer, 4, info);
417 (*info->memory_error_func) (status, memaddr, info);
420 temp |= bfd_getl32 (buffer);
423 insn |= (temp >> 8) & 0xffffff;
424 extension = (temp & 0xff) << 16;
426 status = (*info->read_memory_func) (memaddr + 5, buffer, 2, info);
429 (*info->memory_error_func) (status, memaddr, info);
432 extension |= bfd_getb16 (buffer);
436 unsigned long temp = 0;
437 status = (*info->read_memory_func) (memaddr + 2, buffer, 4, info);
440 (*info->memory_error_func) (status, memaddr, info);
443 temp |= bfd_getl32 (buffer);
446 insn |= (temp >> 16) & 0xffff;
447 extension = (temp & 0xffff) << 8;
449 status = (*info->read_memory_func) (memaddr + 6, buffer, 1, info);
452 (*info->memory_error_func) (status, memaddr, info);
455 extension |= *(unsigned char *)buffer;
459 (*info->fprintf_func) (info->stream, "%s\t", op->name);
461 /* Now print the operands. */
462 for (opindex_ptr = op->operands, nocomma = 1;
468 operand = &mn10300_operands[*opindex_ptr];
470 /* If this operand is a PLUS (autoincrement), then do not emit
471 a comma before emitting the plus. */
472 if ((operand->flags & MN10300_OPERAND_PLUS) != 0)
475 if ((operand->flags & MN10300_OPERAND_SPLIT) != 0)
478 value = insn & ((1 << operand->bits) - 1);
479 value <<= (32 - operand->bits);
480 temp = extension >> operand->shift;
481 temp &= ((1 << (32 - operand->bits)) - 1);
484 else if ((operand->flags & MN10300_OPERAND_24BIT) != 0)
487 value = insn & ((1 << operand->bits) - 1);
488 value <<= (24 - operand->bits);
489 temp = extension >> operand->shift;
490 temp &= ((1 << (24 - operand->bits)) - 1);
492 if ((operand->flags & MN10300_OPERAND_SIGNED) != 0)
493 value = ((value & 0xffffff) ^ (~0x7fffff)) + 0x800000;
495 else if ((operand->flags & MN10300_OPERAND_EXTENDED) != 0)
497 value = ((extension >> (operand->shift))
498 & ((1 << operand->bits) - 1));
502 value = ((insn >> (operand->shift))
503 & ((1 << operand->bits) - 1));
506 if ((operand->flags & MN10300_OPERAND_SIGNED) != 0
507 /* These are properly extended by the code above. */
508 && ((operand->flags & MN10300_OPERAND_24BIT) == 0)
510 value = ((long)(value << (32 - operand->bits))
511 >> (32 - operand->bits));
515 || ((operand->flags & MN10300_OPERAND_PAREN) == 0)))
516 (*info->fprintf_func) (info->stream, ",");
520 if ((operand->flags & MN10300_OPERAND_DREG) != 0)
522 value = ((insn >> (operand->shift + extra_shift))
523 & ((1 << operand->bits) - 1));
524 (*info->fprintf_func) (info->stream, "d%d", value);
527 else if ((operand->flags & MN10300_OPERAND_AREG) != 0)
529 value = ((insn >> (operand->shift + extra_shift))
530 & ((1 << operand->bits) - 1));
531 (*info->fprintf_func) (info->stream, "a%d", value);
534 else if ((operand->flags & MN10300_OPERAND_SP) != 0)
535 (*info->fprintf_func) (info->stream, "sp");
537 else if ((operand->flags & MN10300_OPERAND_PSW) != 0)
538 (*info->fprintf_func) (info->stream, "psw");
540 else if ((operand->flags & MN10300_OPERAND_MDR) != 0)
541 (*info->fprintf_func) (info->stream, "mdr");
543 else if ((operand->flags & MN10300_OPERAND_RREG) != 0)
545 value = ((insn >> (operand->shift + extra_shift))
546 & ((1 << operand->bits) - 1));
548 (*info->fprintf_func) (info->stream, "r%d", value);
550 (*info->fprintf_func) (info->stream, "a%d", value - 8);
552 (*info->fprintf_func) (info->stream, "d%d", value - 12);
555 else if ((operand->flags & MN10300_OPERAND_XRREG) != 0)
557 value = ((insn >> (operand->shift + extra_shift))
558 & ((1 << operand->bits) - 1));
560 (*info->fprintf_func) (info->stream, "sp", value);
562 (*info->fprintf_func) (info->stream, "xr%d", value);
565 else if ((operand->flags & MN10300_OPERAND_USP) != 0)
566 (*info->fprintf_func) (info->stream, "usp");
568 else if ((operand->flags & MN10300_OPERAND_SSP) != 0)
569 (*info->fprintf_func) (info->stream, "ssp");
571 else if ((operand->flags & MN10300_OPERAND_MSP) != 0)
572 (*info->fprintf_func) (info->stream, "msp");
574 else if ((operand->flags & MN10300_OPERAND_PC) != 0)
575 (*info->fprintf_func) (info->stream, "pc");
577 else if ((operand->flags & MN10300_OPERAND_EPSW) != 0)
578 (*info->fprintf_func) (info->stream, "epsw");
580 else if ((operand->flags & MN10300_OPERAND_PLUS) != 0)
581 (*info->fprintf_func) (info->stream, "+");
583 else if ((operand->flags & MN10300_OPERAND_PAREN) != 0)
586 (*info->fprintf_func) (info->stream, ")");
589 (*info->fprintf_func) (info->stream, "(");
595 else if ((operand->flags & MN10300_OPERAND_PCREL) != 0)
596 (*info->print_address_func) ((long) value + memaddr, info);
598 else if ((operand->flags & MN10300_OPERAND_MEMADDR) != 0)
599 (*info->print_address_func) (value, info);
601 else if ((operand->flags & MN10300_OPERAND_REG_LIST) != 0)
605 (*info->fprintf_func) (info->stream, "[");
608 (*info->fprintf_func) (info->stream, "d2");
615 (*info->fprintf_func) (info->stream, ",");
616 (*info->fprintf_func) (info->stream, "d3");
623 (*info->fprintf_func) (info->stream, ",");
624 (*info->fprintf_func) (info->stream, "a2");
631 (*info->fprintf_func) (info->stream, ",");
632 (*info->fprintf_func) (info->stream, "a3");
639 (*info->fprintf_func) (info->stream, ",");
640 (*info->fprintf_func) (info->stream, "other");
647 (*info->fprintf_func) (info->stream, ",");
648 (*info->fprintf_func) (info->stream, "exreg0");
654 (*info->fprintf_func) (info->stream, ",");
655 (*info->fprintf_func) (info->stream, "exreg1");
661 (*info->fprintf_func) (info->stream, ",");
662 (*info->fprintf_func) (info->stream, "exother");
665 (*info->fprintf_func) (info->stream, "]");
669 (*info->fprintf_func) (info->stream, "%d", value);
679 /* xgettext:c-format */
680 (*info->fprintf_func) (info->stream, _("unknown\t0x%04x"), insn);