1 /* Disassemble MN10300 instructions.
2 Copyright (C) 1996, 1997, 1998, 2000 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));
29 #define HAVE_AM33 (info->mach == AM33)
30 #define HAVE_AM30 (info->mach == AM30)
33 print_insn_mn10300 (memaddr, info)
35 struct disassemble_info *info;
42 /* First figure out how big the opcode is. */
43 status = (*info->read_memory_func) (memaddr, buffer, 1, info);
46 (*info->memory_error_func) (status, memaddr, info);
49 insn = *(unsigned char *) buffer;
51 /* These are one byte insns. */
52 if ((insn & 0xf3) == 0x00
53 || (insn & 0xf0) == 0x10
54 || (insn & 0xfc) == 0x3c
55 || (insn & 0xf3) == 0x41
56 || (insn & 0xf3) == 0x40
57 || (insn & 0xfc) == 0x50
58 || (insn & 0xfc) == 0x54
59 || (insn & 0xf0) == 0x60
60 || (insn & 0xf0) == 0x70
61 || ((insn & 0xf0) == 0x80
62 && (insn & 0x0c) >> 2 != (insn & 0x03))
63 || ((insn & 0xf0) == 0x90
64 && (insn & 0x0c) >> 2 != (insn & 0x03))
65 || ((insn & 0xf0) == 0xa0
66 && (insn & 0x0c) >> 2 != (insn & 0x03))
67 || ((insn & 0xf0) == 0xb0
68 && (insn & 0x0c) >> 2 != (insn & 0x03))
69 || (insn & 0xff) == 0xcb
70 || (insn & 0xfc) == 0xd0
71 || (insn & 0xfc) == 0xd4
72 || (insn & 0xfc) == 0xd8
73 || (insn & 0xf0) == 0xe0
74 || (insn & 0xff) == 0xff)
79 /* These are two byte insns. */
80 else if ((insn & 0xf0) == 0x80
81 || (insn & 0xf0) == 0x90
82 || (insn & 0xf0) == 0xa0
83 || (insn & 0xf0) == 0xb0
84 || (insn & 0xfc) == 0x20
85 || (insn & 0xfc) == 0x28
86 || (insn & 0xf3) == 0x43
87 || (insn & 0xf3) == 0x42
88 || (insn & 0xfc) == 0x58
89 || (insn & 0xfc) == 0x5c
90 || ((insn & 0xf0) == 0xc0
91 && (insn & 0xff) != 0xcb
92 && (insn & 0xff) != 0xcc
93 && (insn & 0xff) != 0xcd)
94 || (insn & 0xff) == 0xf0
95 || (insn & 0xff) == 0xf1
96 || (insn & 0xff) == 0xf2
97 || (insn & 0xff) == 0xf3
98 || (insn & 0xff) == 0xf4
99 || (insn & 0xff) == 0xf5
100 || (insn & 0xff) == 0xf6)
102 status = (*info->read_memory_func) (memaddr, buffer, 2, info);
105 (*info->memory_error_func) (status, memaddr, info);
108 insn = bfd_getb16 (buffer);
112 /* These are three byte insns. */
113 else if ((insn & 0xff) == 0xf8
114 || (insn & 0xff) == 0xcc
115 || (insn & 0xff) == 0xf9
116 || (insn & 0xf3) == 0x01
117 || (insn & 0xf3) == 0x02
118 || (insn & 0xf3) == 0x03
119 || (insn & 0xfc) == 0x24
120 || (insn & 0xfc) == 0x2c
121 || (insn & 0xfc) == 0x30
122 || (insn & 0xfc) == 0x34
123 || (insn & 0xfc) == 0x38
124 || (insn & 0xff) == 0xde
125 || (insn & 0xff) == 0xdf
126 || (insn & 0xff) == 0xf9
127 || (insn & 0xff) == 0xcc)
129 status = (*info->read_memory_func) (memaddr, buffer, 2, info);
132 (*info->memory_error_func) (status, memaddr, info);
135 insn = bfd_getb16 (buffer);
137 status = (*info->read_memory_func) (memaddr + 2, buffer, 1, info);
140 (*info->memory_error_func) (status, memaddr, info);
143 insn |= *(unsigned char *)buffer;
147 /* These are four byte insns. */
148 else if ((insn & 0xff) == 0xfa
149 || (insn & 0xff) == 0xf7
150 || (insn & 0xff) == 0xfb)
152 status = (*info->read_memory_func) (memaddr, buffer, 4, info);
155 (*info->memory_error_func) (status, memaddr, info);
158 insn = bfd_getb32 (buffer);
162 /* These are five byte insns. */
163 else if ((insn & 0xff) == 0xcd
164 || (insn & 0xff) == 0xdc)
166 status = (*info->read_memory_func) (memaddr, buffer, 4, info);
169 (*info->memory_error_func) (status, memaddr, info);
172 insn = bfd_getb32 (buffer);
176 /* These are six byte insns. */
177 else if ((insn & 0xff) == 0xfd
178 || (insn & 0xff) == 0xfc)
180 status = (*info->read_memory_func) (memaddr, buffer, 4, info);
183 (*info->memory_error_func) (status, memaddr, info);
187 insn = bfd_getb32 (buffer);
191 /* Else its a seven byte insns (in theory). */
194 status = (*info->read_memory_func) (memaddr, buffer, 4, info);
197 (*info->memory_error_func) (status, memaddr, info);
201 insn = bfd_getb32 (buffer);
205 disassemble (memaddr, info, insn, consume);
211 disassemble (memaddr, info, insn, size)
213 struct disassemble_info *info;
217 struct mn10300_opcode *op = (struct mn10300_opcode *)mn10300_opcodes;
218 const struct mn10300_operand *operand;
220 unsigned long extension = 0;
221 int status, match = 0;
223 /* Find the opcode. */
226 int mysize, extra_shift;
228 if (op->format == FMT_S0)
230 else if (op->format == FMT_S1
231 || op->format == FMT_D0)
233 else if (op->format == FMT_S2
234 || op->format == FMT_D1)
236 else if (op->format == FMT_S4)
238 else if (op->format == FMT_D2)
240 else if (op->format == FMT_D4)
242 else if (op->format == FMT_D6)
244 else if (op->format == FMT_D7 || op->format == FMT_D10)
246 else if (op->format == FMT_D8)
248 else if (op->format == FMT_D9)
253 if ((op->mask & insn) == op->opcode
254 && size == (unsigned int) mysize
256 || (op->machine == AM33 && HAVE_AM33)
257 || (op->machine == AM30 && HAVE_AM30)))
259 const unsigned char *opindex_ptr;
260 unsigned int nocomma;
263 if (op->format == FMT_D1 || op->format == FMT_S1)
265 else if (op->format == FMT_D2 || op->format == FMT_D4
266 || op->format == FMT_S2 || op->format == FMT_S4
267 || op->format == FMT_S6 || op->format == FMT_D5)
269 else if (op->format == FMT_D7
270 || op->format == FMT_D8
271 || op->format == FMT_D9)
276 if (size == 1 || size == 2)
281 && (op->format == FMT_D1
282 || op->opcode == 0xdf0000
283 || op->opcode == 0xde0000))
288 && op->format == FMT_D6)
295 status = (*info->read_memory_func) (memaddr + 1, buffer, 2, info);
298 (*info->memory_error_func) (status, memaddr, info);
302 insn |= bfd_getl16 (buffer);
306 && (op->opcode == 0xfaf80000
307 || op->opcode == 0xfaf00000
308 || op->opcode == 0xfaf40000))
313 && (op->format == FMT_D7
314 || op->format == FMT_D10))
321 status = (*info->read_memory_func) (memaddr + 2, buffer, 2, info);
324 (*info->memory_error_func) (status, memaddr, info);
328 insn |= bfd_getl16 (buffer);
331 else if (size == 5 && op->opcode == 0xdc000000)
333 unsigned long temp = 0;
334 status = (*info->read_memory_func) (memaddr + 1, buffer, 4, info);
337 (*info->memory_error_func) (status, memaddr, info);
340 temp |= bfd_getl32 (buffer);
343 insn |= (temp & 0xffffff00) >> 8;
344 extension = temp & 0xff;
348 unsigned long temp = 0;
349 status = (*info->read_memory_func) (memaddr + 1, buffer, 2, info);
352 (*info->memory_error_func) (status, memaddr, info);
355 temp |= bfd_getl16 (buffer);
360 status = (*info->read_memory_func) (memaddr + 4, buffer, 1, info);
363 (*info->memory_error_func) (status, memaddr, info);
366 extension = *(unsigned char *)buffer;
368 else if (size == 6 && op->format == FMT_D8)
371 status = (*info->read_memory_func) (memaddr + 5, buffer, 1, info);
374 (*info->memory_error_func) (status, memaddr, info);
377 insn |= *(unsigned char *)buffer;
379 status = (*info->read_memory_func) (memaddr + 3, buffer, 2, info);
382 (*info->memory_error_func) (status, memaddr, info);
385 extension = bfd_getl16 (buffer);
389 unsigned long temp = 0;
390 status = (*info->read_memory_func) (memaddr + 2, buffer, 4, info);
393 (*info->memory_error_func) (status, memaddr, info);
396 temp |= bfd_getl32 (buffer);
399 insn |= (temp >> 16) & 0xffff;
400 extension = temp & 0xffff;
402 else if (size == 7 && op->format == FMT_D9)
405 status = (*info->read_memory_func) (memaddr + 3, buffer, 4, info);
408 (*info->memory_error_func) (status, memaddr, info);
411 extension = bfd_getl32 (buffer);
412 insn |= (extension & 0xff000000) >> 24;
413 extension &= 0xffffff;
415 else if (size == 7 && op->opcode == 0xdd000000)
417 unsigned long temp = 0;
418 status = (*info->read_memory_func) (memaddr + 1, buffer, 4, info);
421 (*info->memory_error_func) (status, memaddr, info);
424 temp |= bfd_getl32 (buffer);
427 insn |= (temp >> 8) & 0xffffff;
428 extension = (temp & 0xff) << 16;
430 status = (*info->read_memory_func) (memaddr + 5, buffer, 2, info);
433 (*info->memory_error_func) (status, memaddr, info);
436 extension |= bfd_getb16 (buffer);
440 unsigned long temp = 0;
441 status = (*info->read_memory_func) (memaddr + 2, buffer, 4, info);
444 (*info->memory_error_func) (status, memaddr, info);
447 temp |= bfd_getl32 (buffer);
450 insn |= (temp >> 16) & 0xffff;
451 extension = (temp & 0xffff) << 8;
453 status = (*info->read_memory_func) (memaddr + 6, buffer, 1, info);
456 (*info->memory_error_func) (status, memaddr, info);
459 extension |= *(unsigned char *)buffer;
463 (*info->fprintf_func) (info->stream, "%s\t", op->name);
465 /* Now print the operands. */
466 for (opindex_ptr = op->operands, nocomma = 1;
472 operand = &mn10300_operands[*opindex_ptr];
474 /* If this operand is a PLUS (autoincrement), then do not emit
475 a comma before emitting the plus. */
476 if ((operand->flags & MN10300_OPERAND_PLUS) != 0)
479 if ((operand->flags & MN10300_OPERAND_SPLIT) != 0)
482 value = insn & ((1 << operand->bits) - 1);
483 value <<= (32 - operand->bits);
484 temp = extension >> operand->shift;
485 temp &= ((1 << (32 - operand->bits)) - 1);
487 value = ((value ^ (((unsigned long)1) << 31))
488 - (((unsigned long)1) << 31));
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) ^ 0x800000) - 0x800000;
501 else if ((operand->flags & MN10300_OPERAND_EXTENDED) != 0)
503 value = ((extension >> (operand->shift))
504 & ((1 << operand->bits) - 1));
508 value = ((insn >> (operand->shift))
509 & ((1 << operand->bits) - 1));
512 if ((operand->flags & MN10300_OPERAND_SIGNED) != 0
513 /* These are properly extended by the code above. */
514 && ((operand->flags & MN10300_OPERAND_24BIT) == 0))
515 value = ((value ^ (((unsigned long)1) << (operand->bits - 1)))
516 - (((unsigned long)1) << (operand->bits - 1)));
520 || ((operand->flags & MN10300_OPERAND_PAREN) == 0)))
521 (*info->fprintf_func) (info->stream, ",");
525 if ((operand->flags & MN10300_OPERAND_DREG) != 0)
527 value = ((insn >> (operand->shift + extra_shift))
528 & ((1 << operand->bits) - 1));
529 (*info->fprintf_func) (info->stream, "d%d", (int)value);
532 else if ((operand->flags & MN10300_OPERAND_AREG) != 0)
534 value = ((insn >> (operand->shift + extra_shift))
535 & ((1 << operand->bits) - 1));
536 (*info->fprintf_func) (info->stream, "a%d", (int)value);
539 else if ((operand->flags & MN10300_OPERAND_SP) != 0)
540 (*info->fprintf_func) (info->stream, "sp");
542 else if ((operand->flags & MN10300_OPERAND_PSW) != 0)
543 (*info->fprintf_func) (info->stream, "psw");
545 else if ((operand->flags & MN10300_OPERAND_MDR) != 0)
546 (*info->fprintf_func) (info->stream, "mdr");
548 else if ((operand->flags & MN10300_OPERAND_RREG) != 0)
550 value = ((insn >> (operand->shift + extra_shift))
551 & ((1 << operand->bits) - 1));
553 (*info->fprintf_func) (info->stream, "r%d", (int)value);
555 (*info->fprintf_func) (info->stream, "a%d", (int)value - 8);
557 (*info->fprintf_func) (info->stream, "d%d", (int)value - 12);
560 else if ((operand->flags & MN10300_OPERAND_XRREG) != 0)
562 value = ((insn >> (operand->shift + extra_shift))
563 & ((1 << operand->bits) - 1));
565 (*info->fprintf_func) (info->stream, "sp", value);
567 (*info->fprintf_func) (info->stream, "xr%d", (int)value);
570 else if ((operand->flags & MN10300_OPERAND_USP) != 0)
571 (*info->fprintf_func) (info->stream, "usp");
573 else if ((operand->flags & MN10300_OPERAND_SSP) != 0)
574 (*info->fprintf_func) (info->stream, "ssp");
576 else if ((operand->flags & MN10300_OPERAND_MSP) != 0)
577 (*info->fprintf_func) (info->stream, "msp");
579 else if ((operand->flags & MN10300_OPERAND_PC) != 0)
580 (*info->fprintf_func) (info->stream, "pc");
582 else if ((operand->flags & MN10300_OPERAND_EPSW) != 0)
583 (*info->fprintf_func) (info->stream, "epsw");
585 else if ((operand->flags & MN10300_OPERAND_PLUS) != 0)
586 (*info->fprintf_func) (info->stream, "+");
588 else if ((operand->flags & MN10300_OPERAND_PAREN) != 0)
591 (*info->fprintf_func) (info->stream, ")");
594 (*info->fprintf_func) (info->stream, "(");
600 else if ((operand->flags & MN10300_OPERAND_PCREL) != 0)
601 (*info->print_address_func) ((long) value + memaddr, info);
603 else if ((operand->flags & MN10300_OPERAND_MEMADDR) != 0)
604 (*info->print_address_func) (value, info);
606 else if ((operand->flags & MN10300_OPERAND_REG_LIST) != 0)
610 (*info->fprintf_func) (info->stream, "[");
613 (*info->fprintf_func) (info->stream, "d2");
620 (*info->fprintf_func) (info->stream, ",");
621 (*info->fprintf_func) (info->stream, "d3");
628 (*info->fprintf_func) (info->stream, ",");
629 (*info->fprintf_func) (info->stream, "a2");
636 (*info->fprintf_func) (info->stream, ",");
637 (*info->fprintf_func) (info->stream, "a3");
644 (*info->fprintf_func) (info->stream, ",");
645 (*info->fprintf_func) (info->stream, "other");
652 (*info->fprintf_func) (info->stream, ",");
653 (*info->fprintf_func) (info->stream, "exreg0");
659 (*info->fprintf_func) (info->stream, ",");
660 (*info->fprintf_func) (info->stream, "exreg1");
666 (*info->fprintf_func) (info->stream, ",");
667 (*info->fprintf_func) (info->stream, "exother");
670 (*info->fprintf_func) (info->stream, "]");
674 (*info->fprintf_func) (info->stream, "%ld", (long)value);
684 /* xgettext:c-format */
685 (*info->fprintf_func) (info->stream, _("unknown\t0x%04x"), insn);