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) == 0xcc)
125 status = (*info->read_memory_func) (memaddr, buffer, 2, info);
128 (*info->memory_error_func) (status, memaddr, info);
131 insn = bfd_getb16 (buffer);
133 status = (*info->read_memory_func) (memaddr + 2, buffer, 1, info);
136 (*info->memory_error_func) (status, memaddr, info);
139 insn |= *(unsigned char *)buffer;
143 /* These are four byte insns. */
144 else if ((insn & 0xff) == 0xfa
145 || (insn & 0xff) == 0xfb)
147 status = (*info->read_memory_func) (memaddr, buffer, 4, info);
150 (*info->memory_error_func) (status, memaddr, info);
153 insn = bfd_getb32 (buffer);
157 /* These are five byte insns. */
158 else if ((insn & 0xff) == 0xcd
159 || (insn & 0xff) == 0xdc)
161 status = (*info->read_memory_func) (memaddr, buffer, 4, info);
164 (*info->memory_error_func) (status, memaddr, info);
167 insn = bfd_getb32 (buffer);
171 /* These are six byte insns. */
172 else if ((insn & 0xff) == 0xfd
173 || (insn & 0xff) == 0xfc)
175 status = (*info->read_memory_func) (memaddr, buffer, 4, info);
178 (*info->memory_error_func) (status, memaddr, info);
182 insn = bfd_getb32 (buffer);
186 /* Else its a seven byte insns (in theory). */
189 status = (*info->read_memory_func) (memaddr, buffer, 4, info);
192 (*info->memory_error_func) (status, memaddr, info);
196 insn = bfd_getb32 (buffer);
200 disassemble (memaddr, info, insn, consume);
206 disassemble (memaddr, info, insn, size)
208 struct disassemble_info *info;
212 struct mn10300_opcode *op = (struct mn10300_opcode *)mn10300_opcodes;
213 const struct mn10300_operand *operand;
215 unsigned long extension = 0;
216 int status, match = 0;
218 /* Find the opcode. */
221 int mysize, extra_shift;
223 if (op->format == FMT_S0)
225 else if (op->format == FMT_S1
226 || op->format == FMT_D0)
228 else if (op->format == FMT_S2
229 || op->format == FMT_D1)
231 else if (op->format == FMT_S4)
233 else if (op->format == FMT_D2)
235 else if (op->format == FMT_D4)
240 if ((op->mask & insn) == op->opcode
241 && size == (unsigned int) mysize
243 || op->machine == info->mach))
245 const unsigned char *opindex_ptr;
246 unsigned int nocomma;
249 if (op->format == FMT_D1 || op->format == FMT_S1)
251 else if (op->format == FMT_D2 || op->format == FMT_D4
252 || op->format == FMT_S2 || op->format == FMT_S4
253 || op->format == FMT_S6 || op->format == FMT_D5)
258 if (size == 1 || size == 2)
263 && (op->format == FMT_D1
264 || op->opcode == 0xdf0000
265 || op->opcode == 0xde0000))
272 status = (*info->read_memory_func) (memaddr + 1, buffer, 2, info);
275 (*info->memory_error_func) (status, memaddr, info);
279 insn |= bfd_getl16 (buffer);
283 && (op->opcode == 0xfaf80000
284 || op->opcode == 0xfaf00000
285 || op->opcode == 0xfaf40000))
292 status = (*info->read_memory_func) (memaddr + 2, buffer, 2, info);
295 (*info->memory_error_func) (status, memaddr, info);
299 insn |= bfd_getl16 (buffer);
302 else if (size == 5 && op->opcode == 0xdc000000)
304 unsigned long temp = 0;
305 status = (*info->read_memory_func) (memaddr + 1, buffer, 4, info);
308 (*info->memory_error_func) (status, memaddr, info);
311 temp |= bfd_getl32 (buffer);
314 insn |= (temp & 0xffffff00) >> 8;
315 extension = temp & 0xff;
319 unsigned long temp = 0;
320 status = (*info->read_memory_func) (memaddr + 1, buffer, 2, info);
323 (*info->memory_error_func) (status, memaddr, info);
326 temp |= bfd_getl16 (buffer);
331 status = (*info->read_memory_func) (memaddr + 4, buffer, 1, info);
334 (*info->memory_error_func) (status, memaddr, info);
337 extension = *(unsigned char *)buffer;
341 unsigned long temp = 0;
342 status = (*info->read_memory_func) (memaddr + 2, buffer, 4, info);
345 (*info->memory_error_func) (status, memaddr, info);
348 temp |= bfd_getl32 (buffer);
351 insn |= (temp >> 16) & 0xffff;
352 extension = temp & 0xffff;
354 else if (size == 7 && op->opcode == 0xdd000000)
356 unsigned long temp = 0;
357 status = (*info->read_memory_func) (memaddr + 1, buffer, 4, info);
360 (*info->memory_error_func) (status, memaddr, info);
363 temp |= bfd_getl32 (buffer);
366 insn |= (temp >> 8) & 0xffffff;
367 extension = (temp & 0xff) << 16;
369 status = (*info->read_memory_func) (memaddr + 5, buffer, 2, info);
372 (*info->memory_error_func) (status, memaddr, info);
375 extension |= bfd_getb16 (buffer);
379 unsigned long temp = 0;
380 status = (*info->read_memory_func) (memaddr + 2, buffer, 4, info);
383 (*info->memory_error_func) (status, memaddr, info);
386 temp |= bfd_getl32 (buffer);
389 insn |= (temp >> 16) & 0xffff;
390 extension = (temp & 0xffff) << 8;
392 status = (*info->read_memory_func) (memaddr + 6, buffer, 1, info);
395 (*info->memory_error_func) (status, memaddr, info);
398 extension |= *(unsigned char *)buffer;
402 (*info->fprintf_func) (info->stream, "%s\t", op->name);
404 /* Now print the operands. */
405 for (opindex_ptr = op->operands, nocomma = 1;
411 operand = &mn10300_operands[*opindex_ptr];
414 if ((operand->flags & MN10300_OPERAND_SPLIT) != 0)
417 value = insn & ((1 << operand->bits) - 1);
418 value <<= (32 - operand->bits);
419 temp = extension >> operand->shift;
420 temp &= ((1 << (32 - operand->bits)) - 1);
423 else if ((operand->flags & MN10300_OPERAND_EXTENDED) != 0)
425 value = ((extension >> (operand->shift))
426 & ((1 << operand->bits) - 1));
430 value = ((insn >> (operand->shift))
431 & ((1 << operand->bits) - 1));
434 if ((operand->flags & MN10300_OPERAND_SIGNED) != 0
436 value = ((long)(value << (32 - operand->bits))
437 >> (32 - operand->bits));
441 || ((operand->flags & MN10300_OPERAND_PAREN) == 0)))
442 (*info->fprintf_func) (info->stream, ",");
446 if ((operand->flags & MN10300_OPERAND_DREG) != 0)
448 value = ((insn >> (operand->shift + extra_shift))
449 & ((1 << operand->bits) - 1));
450 (*info->fprintf_func) (info->stream, "d%d", value);
453 else if ((operand->flags & MN10300_OPERAND_AREG) != 0)
455 value = ((insn >> (operand->shift + extra_shift))
456 & ((1 << operand->bits) - 1));
457 (*info->fprintf_func) (info->stream, "a%d", value);
460 else if ((operand->flags & MN10300_OPERAND_SP) != 0)
461 (*info->fprintf_func) (info->stream, "sp");
463 else if ((operand->flags & MN10300_OPERAND_PSW) != 0)
464 (*info->fprintf_func) (info->stream, "psw");
466 else if ((operand->flags & MN10300_OPERAND_MDR) != 0)
467 (*info->fprintf_func) (info->stream, "mdr");
470 else if ((operand->flags & MN10300_OPERAND_PAREN) != 0)
473 (*info->fprintf_func) (info->stream, ")");
476 (*info->fprintf_func) (info->stream, "(");
482 else if ((operand->flags & MN10300_OPERAND_PCREL) != 0)
483 (*info->print_address_func) ((long) value + memaddr, info);
485 else if ((operand->flags & MN10300_OPERAND_MEMADDR) != 0)
486 (*info->print_address_func) (value, info);
488 else if ((operand->flags & MN10300_OPERAND_REG_LIST) != 0)
492 (*info->fprintf_func) (info->stream, "[");
495 (*info->fprintf_func) (info->stream, "d2");
502 (*info->fprintf_func) (info->stream, ",");
503 (*info->fprintf_func) (info->stream, "d3");
510 (*info->fprintf_func) (info->stream, ",");
511 (*info->fprintf_func) (info->stream, "a2");
518 (*info->fprintf_func) (info->stream, ",");
519 (*info->fprintf_func) (info->stream, "a3");
526 (*info->fprintf_func) (info->stream, ",");
527 (*info->fprintf_func) (info->stream, "other");
531 (*info->fprintf_func) (info->stream, "]");
535 (*info->fprintf_func) (info->stream, "%d", value);
545 /* xgettext:c-format */
546 (*info->fprintf_func) (info->stream, _("unknown\t0x%04x"), insn);