1 /* Disassemble MN10300 instructions.
2 Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2003
3 Free Software Foundation, Inc.
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation; either version 2 of the License, or
8 (at your option) any later version.
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with this program; if not, write to the Free Software
17 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
23 #include "opcode/mn10300.h"
27 static void disassemble PARAMS ((bfd_vma, struct disassemble_info *,
28 unsigned long insn, unsigned int));
30 #define HAVE_AM33_2 (info->mach == AM33_2)
31 #define HAVE_AM33 (info->mach == AM33 || HAVE_AM33_2)
32 #define HAVE_AM30 (info->mach == AM30)
35 print_insn_mn10300 (memaddr, info)
37 struct disassemble_info *info;
44 /* First figure out how big the opcode is. */
45 status = (*info->read_memory_func) (memaddr, buffer, 1, info);
48 (*info->memory_error_func) (status, memaddr, info);
51 insn = *(unsigned char *) buffer;
53 /* These are one byte insns. */
54 if ((insn & 0xf3) == 0x00
55 || (insn & 0xf0) == 0x10
56 || (insn & 0xfc) == 0x3c
57 || (insn & 0xf3) == 0x41
58 || (insn & 0xf3) == 0x40
59 || (insn & 0xfc) == 0x50
60 || (insn & 0xfc) == 0x54
61 || (insn & 0xf0) == 0x60
62 || (insn & 0xf0) == 0x70
63 || ((insn & 0xf0) == 0x80
64 && (insn & 0x0c) >> 2 != (insn & 0x03))
65 || ((insn & 0xf0) == 0x90
66 && (insn & 0x0c) >> 2 != (insn & 0x03))
67 || ((insn & 0xf0) == 0xa0
68 && (insn & 0x0c) >> 2 != (insn & 0x03))
69 || ((insn & 0xf0) == 0xb0
70 && (insn & 0x0c) >> 2 != (insn & 0x03))
71 || (insn & 0xff) == 0xcb
72 || (insn & 0xfc) == 0xd0
73 || (insn & 0xfc) == 0xd4
74 || (insn & 0xfc) == 0xd8
75 || (insn & 0xf0) == 0xe0
76 || (insn & 0xff) == 0xff)
81 /* These are two byte insns. */
82 else if ((insn & 0xf0) == 0x80
83 || (insn & 0xf0) == 0x90
84 || (insn & 0xf0) == 0xa0
85 || (insn & 0xf0) == 0xb0
86 || (insn & 0xfc) == 0x20
87 || (insn & 0xfc) == 0x28
88 || (insn & 0xf3) == 0x43
89 || (insn & 0xf3) == 0x42
90 || (insn & 0xfc) == 0x58
91 || (insn & 0xfc) == 0x5c
92 || ((insn & 0xf0) == 0xc0
93 && (insn & 0xff) != 0xcb
94 && (insn & 0xff) != 0xcc
95 && (insn & 0xff) != 0xcd)
96 || (insn & 0xff) == 0xf0
97 || (insn & 0xff) == 0xf1
98 || (insn & 0xff) == 0xf2
99 || (insn & 0xff) == 0xf3
100 || (insn & 0xff) == 0xf4
101 || (insn & 0xff) == 0xf5
102 || (insn & 0xff) == 0xf6)
104 status = (*info->read_memory_func) (memaddr, buffer, 2, info);
107 (*info->memory_error_func) (status, memaddr, info);
110 insn = bfd_getb16 (buffer);
114 /* These are three byte insns. */
115 else if ((insn & 0xff) == 0xf8
116 || (insn & 0xff) == 0xcc
117 || (insn & 0xff) == 0xf9
118 || (insn & 0xf3) == 0x01
119 || (insn & 0xf3) == 0x02
120 || (insn & 0xf3) == 0x03
121 || (insn & 0xfc) == 0x24
122 || (insn & 0xfc) == 0x2c
123 || (insn & 0xfc) == 0x30
124 || (insn & 0xfc) == 0x34
125 || (insn & 0xfc) == 0x38
126 || (insn & 0xff) == 0xde
127 || (insn & 0xff) == 0xdf
128 || (insn & 0xff) == 0xf9
129 || (insn & 0xff) == 0xcc)
131 status = (*info->read_memory_func) (memaddr, buffer, 2, info);
134 (*info->memory_error_func) (status, memaddr, info);
137 insn = bfd_getb16 (buffer);
139 status = (*info->read_memory_func) (memaddr + 2, buffer, 1, info);
142 (*info->memory_error_func) (status, memaddr, info);
145 insn |= *(unsigned char *) buffer;
149 /* These are four byte insns. */
150 else if ((insn & 0xff) == 0xfa
151 || (insn & 0xff) == 0xf7
152 || (insn & 0xff) == 0xfb)
154 status = (*info->read_memory_func) (memaddr, buffer, 4, info);
157 (*info->memory_error_func) (status, memaddr, info);
160 insn = bfd_getb32 (buffer);
164 /* These are five byte insns. */
165 else if ((insn & 0xff) == 0xcd
166 || (insn & 0xff) == 0xdc)
168 status = (*info->read_memory_func) (memaddr, buffer, 4, info);
171 (*info->memory_error_func) (status, memaddr, info);
174 insn = bfd_getb32 (buffer);
178 /* These are six byte insns. */
179 else if ((insn & 0xff) == 0xfd
180 || (insn & 0xff) == 0xfc)
182 status = (*info->read_memory_func) (memaddr, buffer, 4, info);
185 (*info->memory_error_func) (status, memaddr, info);
189 insn = bfd_getb32 (buffer);
193 /* Else its a seven byte insns (in theory). */
196 status = (*info->read_memory_func) (memaddr, buffer, 4, info);
199 (*info->memory_error_func) (status, memaddr, info);
203 insn = bfd_getb32 (buffer);
205 /* Handle the 5-byte extended instruction codes. */
206 if ((insn & 0xfff80000) == 0xfe800000)
210 disassemble (memaddr, info, insn, consume);
216 disassemble (memaddr, info, insn, size)
218 struct disassemble_info *info;
222 struct mn10300_opcode *op = (struct mn10300_opcode *)mn10300_opcodes;
223 const struct mn10300_operand *operand;
225 unsigned long extension = 0;
226 int status, match = 0;
228 /* Find the opcode. */
231 int mysize, extra_shift;
233 if (op->format == FMT_S0)
235 else if (op->format == FMT_S1
236 || op->format == FMT_D0)
238 else if (op->format == FMT_S2
239 || op->format == FMT_D1)
241 else if (op->format == FMT_S4)
243 else if (op->format == FMT_D2)
245 else if (op->format == FMT_D3)
247 else if (op->format == FMT_D4)
249 else if (op->format == FMT_D6)
251 else if (op->format == FMT_D7 || op->format == FMT_D10)
253 else if (op->format == FMT_D8)
255 else if (op->format == FMT_D9)
260 if ((op->mask & insn) == op->opcode
261 && size == (unsigned int) mysize
263 || (op->machine == AM33_2 && HAVE_AM33_2)
264 || (op->machine == AM33 && HAVE_AM33)
265 || (op->machine == AM30 && HAVE_AM30)))
267 const unsigned char *opindex_ptr;
268 unsigned int nocomma;
271 if (op->format == FMT_D1 || op->format == FMT_S1)
273 else if (op->format == FMT_D2 || op->format == FMT_D4
274 || op->format == FMT_S2 || op->format == FMT_S4
275 || op->format == FMT_S6 || op->format == FMT_D5)
277 else if (op->format == FMT_D7
278 || op->format == FMT_D8
279 || op->format == FMT_D9)
284 if (size == 1 || size == 2)
289 && (op->format == FMT_D1
290 || op->opcode == 0xdf0000
291 || op->opcode == 0xde0000))
296 && op->format == FMT_D6)
303 status = (*info->read_memory_func) (memaddr + 1, buffer, 2, info);
306 (*info->memory_error_func) (status, memaddr, info);
310 insn |= bfd_getl16 (buffer);
314 && (op->opcode == 0xfaf80000
315 || op->opcode == 0xfaf00000
316 || op->opcode == 0xfaf40000))
321 && (op->format == FMT_D7
322 || op->format == FMT_D10))
329 status = (*info->read_memory_func) (memaddr + 2, buffer, 2, info);
332 (*info->memory_error_func) (status, memaddr, info);
336 insn |= bfd_getl16 (buffer);
339 else if (size == 5 && op->opcode == 0xdc000000)
341 unsigned long temp = 0;
342 status = (*info->read_memory_func) (memaddr + 1, buffer, 4, info);
345 (*info->memory_error_func) (status, memaddr, info);
348 temp |= bfd_getl32 (buffer);
351 insn |= (temp & 0xffffff00) >> 8;
352 extension = temp & 0xff;
354 else if (size == 5 && op->format == FMT_D3)
356 status = (*info->read_memory_func) (memaddr + 2, buffer, 2, info);
359 (*info->memory_error_func) (status, memaddr, info);
363 insn |= bfd_getl16 (buffer);
365 status = (*info->read_memory_func) (memaddr + 4, buffer, 1, info);
368 (*info->memory_error_func) (status, memaddr, info);
371 extension = *(unsigned char *) buffer;
375 unsigned long temp = 0;
376 status = (*info->read_memory_func) (memaddr + 1, buffer, 2, info);
379 (*info->memory_error_func) (status, memaddr, info);
382 temp |= bfd_getl16 (buffer);
387 status = (*info->read_memory_func) (memaddr + 4, buffer, 1, info);
390 (*info->memory_error_func) (status, memaddr, info);
393 extension = *(unsigned char *) buffer;
395 else if (size == 6 && op->format == FMT_D8)
398 status = (*info->read_memory_func) (memaddr + 5, buffer, 1, info);
401 (*info->memory_error_func) (status, memaddr, info);
404 insn |= *(unsigned char *) buffer;
406 status = (*info->read_memory_func) (memaddr + 3, buffer, 2, info);
409 (*info->memory_error_func) (status, memaddr, info);
412 extension = bfd_getl16 (buffer);
416 unsigned long temp = 0;
417 status = (*info->read_memory_func) (memaddr + 2, buffer, 4, info);
420 (*info->memory_error_func) (status, memaddr, info);
423 temp |= bfd_getl32 (buffer);
426 insn |= (temp >> 16) & 0xffff;
427 extension = temp & 0xffff;
429 else if (size == 7 && op->format == FMT_D9)
432 status = (*info->read_memory_func) (memaddr + 3, buffer, 4, info);
435 (*info->memory_error_func) (status, memaddr, info);
438 extension = bfd_getl32 (buffer);
439 insn |= (extension & 0xff000000) >> 24;
440 extension &= 0xffffff;
442 else if (size == 7 && op->opcode == 0xdd000000)
444 unsigned long temp = 0;
445 status = (*info->read_memory_func) (memaddr + 1, buffer, 4, info);
448 (*info->memory_error_func) (status, memaddr, info);
451 temp |= bfd_getl32 (buffer);
454 insn |= (temp >> 8) & 0xffffff;
455 extension = (temp & 0xff) << 16;
457 status = (*info->read_memory_func) (memaddr + 5, buffer, 2, info);
460 (*info->memory_error_func) (status, memaddr, info);
463 extension |= bfd_getb16 (buffer);
467 unsigned long temp = 0;
468 status = (*info->read_memory_func) (memaddr + 2, buffer, 4, info);
471 (*info->memory_error_func) (status, memaddr, info);
474 temp |= bfd_getl32 (buffer);
477 insn |= (temp >> 16) & 0xffff;
478 extension = (temp & 0xffff) << 8;
480 status = (*info->read_memory_func) (memaddr + 6, buffer, 1, info);
483 (*info->memory_error_func) (status, memaddr, info);
486 extension |= *(unsigned char *) buffer;
490 (*info->fprintf_func) (info->stream, "%s\t", op->name);
492 /* Now print the operands. */
493 for (opindex_ptr = op->operands, nocomma = 1;
499 operand = &mn10300_operands[*opindex_ptr];
501 /* If this operand is a PLUS (autoincrement), then do not emit
502 a comma before emitting the plus. */
503 if ((operand->flags & MN10300_OPERAND_PLUS) != 0)
506 if ((operand->flags & MN10300_OPERAND_SPLIT) != 0)
509 value = insn & ((1 << operand->bits) - 1);
510 value <<= (32 - operand->bits);
511 temp = extension >> operand->shift;
512 temp &= ((1 << (32 - operand->bits)) - 1);
514 value = ((value ^ (((unsigned long) 1) << 31))
515 - (((unsigned long) 1) << 31));
517 else if ((operand->flags & MN10300_OPERAND_24BIT) != 0)
520 value = insn & ((1 << operand->bits) - 1);
521 value <<= (24 - operand->bits);
522 temp = extension >> operand->shift;
523 temp &= ((1 << (24 - operand->bits)) - 1);
525 if ((operand->flags & MN10300_OPERAND_SIGNED) != 0)
526 value = ((value & 0xffffff) ^ 0x800000) - 0x800000;
528 else if ((operand->flags & (MN10300_OPERAND_FSREG
529 | MN10300_OPERAND_FDREG)))
531 /* See m10300-opc.c just before #define FSM0 for an
532 explanation of these variables. Note that
533 FMT-implied shifts are not taken into account for
535 unsigned long mask_low, mask_high;
536 int shl_low, shr_high, shl_high;
538 switch (operand->bits)
541 /* Handle regular FP registers. */
542 if (operand->shift >= 0)
544 /* This is an `m' register. */
545 shl_low = operand->shift;
546 shl_high = 8 + (8 & shl_low) + (shl_low & 4) / 4;
550 /* This is an `n' register. */
551 shl_low = -operand->shift;
552 shl_high = shl_low / 4;
560 /* Handle accumulators. */
561 shl_low = -operand->shift;
571 value = ((((insn >> shl_high) << shr_high) & mask_high)
572 | ((insn >> shl_low) & mask_low));
574 else if ((operand->flags & MN10300_OPERAND_EXTENDED) != 0)
576 value = ((extension >> (operand->shift))
577 & ((1 << operand->bits) - 1));
581 value = ((insn >> (operand->shift))
582 & ((1 << operand->bits) - 1));
585 if ((operand->flags & MN10300_OPERAND_SIGNED) != 0
586 /* These are properly extended by the code above. */
587 && ((operand->flags & MN10300_OPERAND_24BIT) == 0))
588 value = ((value ^ (((unsigned long) 1) << (operand->bits - 1)))
589 - (((unsigned long) 1) << (operand->bits - 1)));
593 || ((operand->flags & MN10300_OPERAND_PAREN) == 0)))
594 (*info->fprintf_func) (info->stream, ",");
598 if ((operand->flags & MN10300_OPERAND_DREG) != 0)
600 value = ((insn >> (operand->shift + extra_shift))
601 & ((1 << operand->bits) - 1));
602 (*info->fprintf_func) (info->stream, "d%d", (int) value);
605 else if ((operand->flags & MN10300_OPERAND_AREG) != 0)
607 value = ((insn >> (operand->shift + extra_shift))
608 & ((1 << operand->bits) - 1));
609 (*info->fprintf_func) (info->stream, "a%d", (int) value);
612 else if ((operand->flags & MN10300_OPERAND_SP) != 0)
613 (*info->fprintf_func) (info->stream, "sp");
615 else if ((operand->flags & MN10300_OPERAND_PSW) != 0)
616 (*info->fprintf_func) (info->stream, "psw");
618 else if ((operand->flags & MN10300_OPERAND_MDR) != 0)
619 (*info->fprintf_func) (info->stream, "mdr");
621 else if ((operand->flags & MN10300_OPERAND_RREG) != 0)
623 value = ((insn >> (operand->shift + extra_shift))
624 & ((1 << operand->bits) - 1));
626 (*info->fprintf_func) (info->stream, "r%d", (int) value);
628 (*info->fprintf_func) (info->stream, "a%d", (int) value - 8);
630 (*info->fprintf_func) (info->stream, "d%d", (int) value - 12);
633 else if ((operand->flags & MN10300_OPERAND_XRREG) != 0)
635 value = ((insn >> (operand->shift + extra_shift))
636 & ((1 << operand->bits) - 1));
638 (*info->fprintf_func) (info->stream, "sp", value);
640 (*info->fprintf_func) (info->stream, "xr%d", (int) value);
643 else if ((operand->flags & MN10300_OPERAND_FSREG) != 0)
644 (*info->fprintf_func) (info->stream, "fs%d", (int) value);
646 else if ((operand->flags & MN10300_OPERAND_FDREG) != 0)
647 (*info->fprintf_func) (info->stream, "fd%d", (int) value);
649 else if ((operand->flags & MN10300_OPERAND_FPCR) != 0)
650 (*info->fprintf_func) (info->stream, "fpcr");
652 else if ((operand->flags & MN10300_OPERAND_USP) != 0)
653 (*info->fprintf_func) (info->stream, "usp");
655 else if ((operand->flags & MN10300_OPERAND_SSP) != 0)
656 (*info->fprintf_func) (info->stream, "ssp");
658 else if ((operand->flags & MN10300_OPERAND_MSP) != 0)
659 (*info->fprintf_func) (info->stream, "msp");
661 else if ((operand->flags & MN10300_OPERAND_PC) != 0)
662 (*info->fprintf_func) (info->stream, "pc");
664 else if ((operand->flags & MN10300_OPERAND_EPSW) != 0)
665 (*info->fprintf_func) (info->stream, "epsw");
667 else if ((operand->flags & MN10300_OPERAND_PLUS) != 0)
668 (*info->fprintf_func) (info->stream, "+");
670 else if ((operand->flags & MN10300_OPERAND_PAREN) != 0)
673 (*info->fprintf_func) (info->stream, ")");
676 (*info->fprintf_func) (info->stream, "(");
682 else if ((operand->flags & MN10300_OPERAND_PCREL) != 0)
683 (*info->print_address_func) ((long) value + memaddr, info);
685 else if ((operand->flags & MN10300_OPERAND_MEMADDR) != 0)
686 (*info->print_address_func) (value, info);
688 else if ((operand->flags & MN10300_OPERAND_REG_LIST) != 0)
692 (*info->fprintf_func) (info->stream, "[");
695 (*info->fprintf_func) (info->stream, "d2");
702 (*info->fprintf_func) (info->stream, ",");
703 (*info->fprintf_func) (info->stream, "d3");
710 (*info->fprintf_func) (info->stream, ",");
711 (*info->fprintf_func) (info->stream, "a2");
718 (*info->fprintf_func) (info->stream, ",");
719 (*info->fprintf_func) (info->stream, "a3");
726 (*info->fprintf_func) (info->stream, ",");
727 (*info->fprintf_func) (info->stream, "other");
734 (*info->fprintf_func) (info->stream, ",");
735 (*info->fprintf_func) (info->stream, "exreg0");
741 (*info->fprintf_func) (info->stream, ",");
742 (*info->fprintf_func) (info->stream, "exreg1");
748 (*info->fprintf_func) (info->stream, ",");
749 (*info->fprintf_func) (info->stream, "exother");
752 (*info->fprintf_func) (info->stream, "]");
756 (*info->fprintf_func) (info->stream, "%ld", (long) value);
766 /* xgettext:c-format */
767 (*info->fprintf_func) (info->stream, _("unknown\t0x%04x"), insn);