| 1 |
24 |
jeremybenn |
/* Disassemble MN10200 instructions.
|
| 2 |
|
|
Copyright 1996, 1997, 1998, 2000, 2005, 2007 Free Software Foundation, Inc.
|
| 3 |
|
|
|
| 4 |
|
|
This file is part of the GNU opcodes library.
|
| 5 |
|
|
|
| 6 |
|
|
This library is free software; you can redistribute it and/or modify
|
| 7 |
|
|
it under the terms of the GNU General Public License as published by
|
| 8 |
|
|
the Free Software Foundation; either version 3, or (at your option)
|
| 9 |
|
|
any later version.
|
| 10 |
|
|
|
| 11 |
|
|
It is distributed in the hope that it will be useful, but WITHOUT
|
| 12 |
|
|
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
|
| 13 |
|
|
or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
|
| 14 |
|
|
License for more details.
|
| 15 |
|
|
|
| 16 |
|
|
You should have received a copy of the GNU General Public License
|
| 17 |
|
|
along with this program; if not, write to the Free Software
|
| 18 |
|
|
Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
|
| 19 |
|
|
MA 02110-1301, USA. */
|
| 20 |
|
|
|
| 21 |
|
|
#include <stdio.h>
|
| 22 |
|
|
|
| 23 |
|
|
#include "sysdep.h"
|
| 24 |
|
|
#include "opcode/mn10200.h"
|
| 25 |
|
|
#include "dis-asm.h"
|
| 26 |
|
|
#include "opintl.h"
|
| 27 |
|
|
|
| 28 |
|
|
static void
|
| 29 |
|
|
disassemble (bfd_vma memaddr,
|
| 30 |
|
|
struct disassemble_info *info,
|
| 31 |
|
|
unsigned long insn,
|
| 32 |
|
|
unsigned long extension,
|
| 33 |
|
|
unsigned int size)
|
| 34 |
|
|
{
|
| 35 |
|
|
struct mn10200_opcode *op = (struct mn10200_opcode *)mn10200_opcodes;
|
| 36 |
|
|
const struct mn10200_operand *operand;
|
| 37 |
|
|
int match = 0;
|
| 38 |
|
|
|
| 39 |
|
|
/* Find the opcode. */
|
| 40 |
|
|
while (op->name)
|
| 41 |
|
|
{
|
| 42 |
|
|
int mysize, extra_shift;
|
| 43 |
|
|
|
| 44 |
|
|
if (op->format == FMT_1)
|
| 45 |
|
|
mysize = 1;
|
| 46 |
|
|
else if (op->format == FMT_2
|
| 47 |
|
|
|| op->format == FMT_4)
|
| 48 |
|
|
mysize = 2;
|
| 49 |
|
|
else if (op->format == FMT_3
|
| 50 |
|
|
|| op->format == FMT_5)
|
| 51 |
|
|
mysize = 3;
|
| 52 |
|
|
else if (op->format == FMT_6)
|
| 53 |
|
|
mysize = 4;
|
| 54 |
|
|
else if (op->format == FMT_7)
|
| 55 |
|
|
mysize = 5;
|
| 56 |
|
|
else
|
| 57 |
|
|
abort ();
|
| 58 |
|
|
|
| 59 |
|
|
if (op->format == FMT_2 || op->format == FMT_5)
|
| 60 |
|
|
extra_shift = 8;
|
| 61 |
|
|
else if (op->format == FMT_3
|
| 62 |
|
|
|| op->format == FMT_6
|
| 63 |
|
|
|| op->format == FMT_7)
|
| 64 |
|
|
extra_shift = 16;
|
| 65 |
|
|
else
|
| 66 |
|
|
extra_shift = 0;
|
| 67 |
|
|
|
| 68 |
|
|
if ((op->mask & insn) == op->opcode
|
| 69 |
|
|
&& size == (unsigned int) mysize)
|
| 70 |
|
|
{
|
| 71 |
|
|
const unsigned char *opindex_ptr;
|
| 72 |
|
|
unsigned int nocomma;
|
| 73 |
|
|
int paren = 0;
|
| 74 |
|
|
|
| 75 |
|
|
match = 1;
|
| 76 |
|
|
(*info->fprintf_func) (info->stream, "%s\t", op->name);
|
| 77 |
|
|
|
| 78 |
|
|
/* Now print the operands. */
|
| 79 |
|
|
for (opindex_ptr = op->operands, nocomma = 1;
|
| 80 |
|
|
*opindex_ptr != 0;
|
| 81 |
|
|
opindex_ptr++)
|
| 82 |
|
|
{
|
| 83 |
|
|
unsigned long value;
|
| 84 |
|
|
|
| 85 |
|
|
operand = &mn10200_operands[*opindex_ptr];
|
| 86 |
|
|
|
| 87 |
|
|
if ((operand->flags & MN10200_OPERAND_EXTENDED) != 0)
|
| 88 |
|
|
{
|
| 89 |
|
|
value = (insn & 0xffff) << 8;
|
| 90 |
|
|
value |= extension;
|
| 91 |
|
|
}
|
| 92 |
|
|
else
|
| 93 |
|
|
{
|
| 94 |
|
|
value = ((insn >> (operand->shift))
|
| 95 |
|
|
& ((1L << operand->bits) - 1L));
|
| 96 |
|
|
}
|
| 97 |
|
|
|
| 98 |
|
|
if ((operand->flags & MN10200_OPERAND_SIGNED) != 0)
|
| 99 |
|
|
value = ((long)(value << (32 - operand->bits))
|
| 100 |
|
|
>> (32 - operand->bits));
|
| 101 |
|
|
|
| 102 |
|
|
if (!nocomma
|
| 103 |
|
|
&& (!paren
|
| 104 |
|
|
|| ((operand->flags & MN10200_OPERAND_PAREN) == 0)))
|
| 105 |
|
|
(*info->fprintf_func) (info->stream, ",");
|
| 106 |
|
|
|
| 107 |
|
|
nocomma = 0;
|
| 108 |
|
|
|
| 109 |
|
|
if ((operand->flags & MN10200_OPERAND_DREG) != 0)
|
| 110 |
|
|
{
|
| 111 |
|
|
value = ((insn >> (operand->shift + extra_shift))
|
| 112 |
|
|
& ((1 << operand->bits) - 1));
|
| 113 |
|
|
(*info->fprintf_func) (info->stream, "d%ld", value);
|
| 114 |
|
|
}
|
| 115 |
|
|
|
| 116 |
|
|
else if ((operand->flags & MN10200_OPERAND_AREG) != 0)
|
| 117 |
|
|
{
|
| 118 |
|
|
value = ((insn >> (operand->shift + extra_shift))
|
| 119 |
|
|
& ((1 << operand->bits) - 1));
|
| 120 |
|
|
(*info->fprintf_func) (info->stream, "a%ld", value);
|
| 121 |
|
|
}
|
| 122 |
|
|
|
| 123 |
|
|
else if ((operand->flags & MN10200_OPERAND_PSW) != 0)
|
| 124 |
|
|
(*info->fprintf_func) (info->stream, "psw");
|
| 125 |
|
|
|
| 126 |
|
|
else if ((operand->flags & MN10200_OPERAND_MDR) != 0)
|
| 127 |
|
|
(*info->fprintf_func) (info->stream, "mdr");
|
| 128 |
|
|
|
| 129 |
|
|
else if ((operand->flags & MN10200_OPERAND_PAREN) != 0)
|
| 130 |
|
|
{
|
| 131 |
|
|
if (paren)
|
| 132 |
|
|
(*info->fprintf_func) (info->stream, ")");
|
| 133 |
|
|
else
|
| 134 |
|
|
{
|
| 135 |
|
|
(*info->fprintf_func) (info->stream, "(");
|
| 136 |
|
|
nocomma = 1;
|
| 137 |
|
|
}
|
| 138 |
|
|
paren = !paren;
|
| 139 |
|
|
}
|
| 140 |
|
|
|
| 141 |
|
|
else if ((operand->flags & MN10200_OPERAND_PCREL) != 0)
|
| 142 |
|
|
(*info->print_address_func)
|
| 143 |
|
|
((value + memaddr + mysize) & 0xffffff, info);
|
| 144 |
|
|
|
| 145 |
|
|
else if ((operand->flags & MN10200_OPERAND_MEMADDR) != 0)
|
| 146 |
|
|
(*info->print_address_func) (value, info);
|
| 147 |
|
|
|
| 148 |
|
|
else
|
| 149 |
|
|
(*info->fprintf_func) (info->stream, "%ld", value);
|
| 150 |
|
|
}
|
| 151 |
|
|
/* All done. */
|
| 152 |
|
|
break;
|
| 153 |
|
|
}
|
| 154 |
|
|
op++;
|
| 155 |
|
|
}
|
| 156 |
|
|
|
| 157 |
|
|
if (!match)
|
| 158 |
|
|
(*info->fprintf_func) (info->stream, _("unknown\t0x%04lx"), insn);
|
| 159 |
|
|
}
|
| 160 |
|
|
|
| 161 |
|
|
int
|
| 162 |
|
|
print_insn_mn10200 (bfd_vma memaddr, struct disassemble_info *info)
|
| 163 |
|
|
{
|
| 164 |
|
|
int status;
|
| 165 |
|
|
bfd_byte buffer[4];
|
| 166 |
|
|
unsigned long insn;
|
| 167 |
|
|
unsigned long extension = 0;
|
| 168 |
|
|
unsigned int consume;
|
| 169 |
|
|
|
| 170 |
|
|
/* First figure out how big the opcode is. */
|
| 171 |
|
|
status = (*info->read_memory_func) (memaddr, buffer, 1, info);
|
| 172 |
|
|
if (status != 0)
|
| 173 |
|
|
{
|
| 174 |
|
|
(*info->memory_error_func) (status, memaddr, info);
|
| 175 |
|
|
return -1;
|
| 176 |
|
|
}
|
| 177 |
|
|
|
| 178 |
|
|
insn = *(unsigned char *) buffer;
|
| 179 |
|
|
|
| 180 |
|
|
/* These are one byte insns. */
|
| 181 |
|
|
if ((insn & 0xf0) == 0x00
|
| 182 |
|
|
|| (insn & 0xf0) == 0x10
|
| 183 |
|
|
|| (insn & 0xf0) == 0x20
|
| 184 |
|
|
|| (insn & 0xf0) == 0x30
|
| 185 |
|
|
|| ((insn & 0xf0) == 0x80
|
| 186 |
|
|
&& (insn & 0x0c) >> 2 != (insn & 0x03))
|
| 187 |
|
|
|| (insn & 0xf0) == 0x90
|
| 188 |
|
|
|| (insn & 0xf0) == 0xa0
|
| 189 |
|
|
|| (insn & 0xf0) == 0xb0
|
| 190 |
|
|
|| (insn & 0xff) == 0xeb
|
| 191 |
|
|
|| (insn & 0xff) == 0xf6
|
| 192 |
|
|
|| (insn & 0xff) == 0xfe
|
| 193 |
|
|
|| (insn & 0xff) == 0xff)
|
| 194 |
|
|
{
|
| 195 |
|
|
extension = 0;
|
| 196 |
|
|
consume = 1;
|
| 197 |
|
|
}
|
| 198 |
|
|
|
| 199 |
|
|
/* These are two byte insns. */
|
| 200 |
|
|
else if ((insn & 0xf0) == 0x40
|
| 201 |
|
|
|| (insn & 0xf0) == 0x50
|
| 202 |
|
|
|| (insn & 0xf0) == 0x60
|
| 203 |
|
|
|| (insn & 0xf0) == 0x70
|
| 204 |
|
|
|| (insn & 0xf0) == 0x80
|
| 205 |
|
|
|| (insn & 0xfc) == 0xd0
|
| 206 |
|
|
|| (insn & 0xfc) == 0xd4
|
| 207 |
|
|
|| (insn & 0xfc) == 0xd8
|
| 208 |
|
|
|| (insn & 0xfc) == 0xe0
|
| 209 |
|
|
|| (insn & 0xfc) == 0xe4
|
| 210 |
|
|
|| (insn & 0xff) == 0xe8
|
| 211 |
|
|
|| (insn & 0xff) == 0xe9
|
| 212 |
|
|
|| (insn & 0xff) == 0xea
|
| 213 |
|
|
|| (insn & 0xff) == 0xf0
|
| 214 |
|
|
|| (insn & 0xff) == 0xf1
|
| 215 |
|
|
|| (insn & 0xff) == 0xf2
|
| 216 |
|
|
|| (insn & 0xff) == 0xf3)
|
| 217 |
|
|
{
|
| 218 |
|
|
status = (*info->read_memory_func) (memaddr, buffer, 2, info);
|
| 219 |
|
|
if (status != 0)
|
| 220 |
|
|
{
|
| 221 |
|
|
(*info->memory_error_func) (status, memaddr, info);
|
| 222 |
|
|
return -1;
|
| 223 |
|
|
}
|
| 224 |
|
|
insn = bfd_getb16 (buffer);
|
| 225 |
|
|
consume = 2;
|
| 226 |
|
|
}
|
| 227 |
|
|
|
| 228 |
|
|
/* These are three byte insns with a 16bit operand in little
|
| 229 |
|
|
endian form. */
|
| 230 |
|
|
else if ((insn & 0xf0) == 0xc0
|
| 231 |
|
|
|| (insn & 0xfc) == 0xdc
|
| 232 |
|
|
|| (insn & 0xfc) == 0xec
|
| 233 |
|
|
|| (insn & 0xff) == 0xf8
|
| 234 |
|
|
|| (insn & 0xff) == 0xf9
|
| 235 |
|
|
|| (insn & 0xff) == 0xfa
|
| 236 |
|
|
|| (insn & 0xff) == 0xfb
|
| 237 |
|
|
|| (insn & 0xff) == 0xfc
|
| 238 |
|
|
|| (insn & 0xff) == 0xfd)
|
| 239 |
|
|
{
|
| 240 |
|
|
status = (*info->read_memory_func) (memaddr + 1, buffer, 2, info);
|
| 241 |
|
|
if (status != 0)
|
| 242 |
|
|
{
|
| 243 |
|
|
(*info->memory_error_func) (status, memaddr, info);
|
| 244 |
|
|
return -1;
|
| 245 |
|
|
}
|
| 246 |
|
|
insn <<= 16;
|
| 247 |
|
|
insn |= bfd_getl16 (buffer);
|
| 248 |
|
|
extension = 0;
|
| 249 |
|
|
consume = 3;
|
| 250 |
|
|
}
|
| 251 |
|
|
/* These are three byte insns too, but we don't have to mess with
|
| 252 |
|
|
endianness stuff. */
|
| 253 |
|
|
else if ((insn & 0xff) == 0xf5)
|
| 254 |
|
|
{
|
| 255 |
|
|
status = (*info->read_memory_func) (memaddr + 1, buffer, 2, info);
|
| 256 |
|
|
if (status != 0)
|
| 257 |
|
|
{
|
| 258 |
|
|
(*info->memory_error_func) (status, memaddr, info);
|
| 259 |
|
|
return -1;
|
| 260 |
|
|
}
|
| 261 |
|
|
insn <<= 16;
|
| 262 |
|
|
insn |= bfd_getb16 (buffer);
|
| 263 |
|
|
extension = 0;
|
| 264 |
|
|
consume = 3;
|
| 265 |
|
|
}
|
| 266 |
|
|
|
| 267 |
|
|
/* These are four byte insns. */
|
| 268 |
|
|
else if ((insn & 0xff) == 0xf7)
|
| 269 |
|
|
{
|
| 270 |
|
|
status = (*info->read_memory_func) (memaddr, buffer, 2, info);
|
| 271 |
|
|
if (status != 0)
|
| 272 |
|
|
{
|
| 273 |
|
|
(*info->memory_error_func) (status, memaddr, info);
|
| 274 |
|
|
return -1;
|
| 275 |
|
|
}
|
| 276 |
|
|
insn = bfd_getb16 (buffer);
|
| 277 |
|
|
insn <<= 16;
|
| 278 |
|
|
status = (*info->read_memory_func) (memaddr + 2, buffer, 2, info);
|
| 279 |
|
|
if (status != 0)
|
| 280 |
|
|
{
|
| 281 |
|
|
(*info->memory_error_func) (status, memaddr, info);
|
| 282 |
|
|
return -1;
|
| 283 |
|
|
}
|
| 284 |
|
|
insn |= bfd_getl16 (buffer);
|
| 285 |
|
|
extension = 0;
|
| 286 |
|
|
consume = 4;
|
| 287 |
|
|
}
|
| 288 |
|
|
|
| 289 |
|
|
/* These are five byte insns. */
|
| 290 |
|
|
else if ((insn & 0xff) == 0xf4)
|
| 291 |
|
|
{
|
| 292 |
|
|
status = (*info->read_memory_func) (memaddr, buffer, 2, info);
|
| 293 |
|
|
if (status != 0)
|
| 294 |
|
|
{
|
| 295 |
|
|
(*info->memory_error_func) (status, memaddr, info);
|
| 296 |
|
|
return -1;
|
| 297 |
|
|
}
|
| 298 |
|
|
insn = bfd_getb16 (buffer);
|
| 299 |
|
|
insn <<= 16;
|
| 300 |
|
|
|
| 301 |
|
|
status = (*info->read_memory_func) (memaddr + 4, buffer, 1, info);
|
| 302 |
|
|
if (status != 0)
|
| 303 |
|
|
{
|
| 304 |
|
|
(*info->memory_error_func) (status, memaddr, info);
|
| 305 |
|
|
return -1;
|
| 306 |
|
|
}
|
| 307 |
|
|
insn |= (*(unsigned char *)buffer << 8) & 0xff00;
|
| 308 |
|
|
|
| 309 |
|
|
status = (*info->read_memory_func) (memaddr + 3, buffer, 1, info);
|
| 310 |
|
|
if (status != 0)
|
| 311 |
|
|
{
|
| 312 |
|
|
(*info->memory_error_func) (status, memaddr, info);
|
| 313 |
|
|
return -1;
|
| 314 |
|
|
}
|
| 315 |
|
|
insn |= (*(unsigned char *)buffer) & 0xff;
|
| 316 |
|
|
|
| 317 |
|
|
status = (*info->read_memory_func) (memaddr + 2, buffer, 1, info);
|
| 318 |
|
|
if (status != 0)
|
| 319 |
|
|
{
|
| 320 |
|
|
(*info->memory_error_func) (status, memaddr, info);
|
| 321 |
|
|
return -1;
|
| 322 |
|
|
}
|
| 323 |
|
|
extension = (*(unsigned char *)buffer) & 0xff;
|
| 324 |
|
|
consume = 5;
|
| 325 |
|
|
}
|
| 326 |
|
|
else
|
| 327 |
|
|
{
|
| 328 |
|
|
(*info->fprintf_func) (info->stream, _("unknown\t0x%02lx"), insn);
|
| 329 |
|
|
return 1;
|
| 330 |
|
|
}
|
| 331 |
|
|
|
| 332 |
|
|
disassemble (memaddr, info, insn, extension, consume);
|
| 333 |
|
|
|
| 334 |
|
|
return consume;
|
| 335 |
|
|
}
|
