1 /* Disassemble MN10200 instructions.
2 Copyright 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., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
22 #include "opcode/mn10200.h"
26 static void disassemble PARAMS ((bfd_vma, struct disassemble_info *,
27 unsigned long insn, unsigned long,
31 print_insn_mn10200 (memaddr, info)
33 struct disassemble_info *info;
38 unsigned long extension = 0;
41 /* First figure out how big the opcode is. */
42 status = (*info->read_memory_func) (memaddr, buffer, 1, info);
45 (*info->memory_error_func) (status, memaddr, info);
49 insn = *(unsigned char *) buffer;
51 /* These are one byte insns. */
52 if ((insn & 0xf0) == 0x00
53 || (insn & 0xf0) == 0x10
54 || (insn & 0xf0) == 0x20
55 || (insn & 0xf0) == 0x30
56 || ((insn & 0xf0) == 0x80
57 && (insn & 0x0c) >> 2 != (insn & 0x03))
58 || (insn & 0xf0) == 0x90
59 || (insn & 0xf0) == 0xa0
60 || (insn & 0xf0) == 0xb0
61 || (insn & 0xff) == 0xeb
62 || (insn & 0xff) == 0xf6
63 || (insn & 0xff) == 0xfe
64 || (insn & 0xff) == 0xff)
70 /* These are two byte insns. */
71 else if ((insn & 0xf0) == 0x40
72 || (insn & 0xf0) == 0x50
73 || (insn & 0xf0) == 0x60
74 || (insn & 0xf0) == 0x70
75 || (insn & 0xf0) == 0x80
76 || (insn & 0xfc) == 0xd0
77 || (insn & 0xfc) == 0xd4
78 || (insn & 0xfc) == 0xd8
79 || (insn & 0xfc) == 0xe0
80 || (insn & 0xfc) == 0xe4
81 || (insn & 0xff) == 0xe8
82 || (insn & 0xff) == 0xe9
83 || (insn & 0xff) == 0xea
84 || (insn & 0xff) == 0xf0
85 || (insn & 0xff) == 0xf1
86 || (insn & 0xff) == 0xf2
87 || (insn & 0xff) == 0xf3)
89 status = (*info->read_memory_func) (memaddr, buffer, 2, info);
92 (*info->memory_error_func) (status, memaddr, info);
95 insn = bfd_getb16 (buffer);
99 /* These are three byte insns with a 16bit operand in little
101 else if ((insn & 0xf0) == 0xc0
102 || (insn & 0xfc) == 0xdc
103 || (insn & 0xfc) == 0xec
104 || (insn & 0xff) == 0xf8
105 || (insn & 0xff) == 0xf9
106 || (insn & 0xff) == 0xfa
107 || (insn & 0xff) == 0xfb
108 || (insn & 0xff) == 0xfc
109 || (insn & 0xff) == 0xfd)
111 status = (*info->read_memory_func) (memaddr + 1, buffer, 2, info);
114 (*info->memory_error_func) (status, memaddr, info);
118 insn |= bfd_getl16 (buffer);
122 /* These are three byte insns too, but we don't have to mess with
124 else if ((insn & 0xff) == 0xf5)
126 status = (*info->read_memory_func) (memaddr + 1, buffer, 2, info);
129 (*info->memory_error_func) (status, memaddr, info);
133 insn |= bfd_getb16 (buffer);
138 /* These are four byte insns. */
139 else if ((insn & 0xff) == 0xf7)
141 status = (*info->read_memory_func) (memaddr, buffer, 2, info);
144 (*info->memory_error_func) (status, memaddr, info);
147 insn = bfd_getb16 (buffer);
149 status = (*info->read_memory_func) (memaddr + 2, buffer, 2, info);
152 (*info->memory_error_func) (status, memaddr, info);
155 insn |= bfd_getl16 (buffer);
160 /* These are five byte insns. */
161 else if ((insn & 0xff) == 0xf4)
163 status = (*info->read_memory_func) (memaddr, buffer, 2, info);
166 (*info->memory_error_func) (status, memaddr, info);
169 insn = bfd_getb16 (buffer);
172 status = (*info->read_memory_func) (memaddr + 4, buffer, 1, info);
175 (*info->memory_error_func) (status, memaddr, info);
178 insn |= (*(unsigned char *)buffer << 8) & 0xff00;
180 status = (*info->read_memory_func) (memaddr + 3, buffer, 1, info);
183 (*info->memory_error_func) (status, memaddr, info);
186 insn |= (*(unsigned char *)buffer) & 0xff;
188 status = (*info->read_memory_func) (memaddr + 2, buffer, 1, info);
191 (*info->memory_error_func) (status, memaddr, info);
194 extension = (*(unsigned char *)buffer) & 0xff;
199 (*info->fprintf_func) (info->stream, _("unknown\t0x%02x"), insn);
203 disassemble (memaddr, info, insn, extension, consume);
209 disassemble (memaddr, info, insn, extension, size)
211 struct disassemble_info *info;
213 unsigned long extension;
216 struct mn10200_opcode *op = (struct mn10200_opcode *)mn10200_opcodes;
217 const struct mn10200_operand *operand;
220 /* Find the opcode. */
223 int mysize, extra_shift;
225 if (op->format == FMT_1)
227 else if (op->format == FMT_2
228 || op->format == FMT_4)
230 else if (op->format == FMT_3
231 || op->format == FMT_5)
233 else if (op->format == FMT_6)
235 else if (op->format == FMT_7)
240 if (op->format == FMT_2 || op->format == FMT_5)
242 else if (op->format == FMT_3
243 || op->format == FMT_6
244 || op->format == FMT_7)
249 if ((op->mask & insn) == op->opcode
250 && size == (unsigned int) mysize)
252 const unsigned char *opindex_ptr;
253 unsigned int nocomma;
257 (*info->fprintf_func) (info->stream, "%s\t", op->name);
259 /* Now print the operands. */
260 for (opindex_ptr = op->operands, nocomma = 1;
266 operand = &mn10200_operands[*opindex_ptr];
268 if ((operand->flags & MN10200_OPERAND_EXTENDED) != 0)
270 value = (insn & 0xffff) << 8;
275 value = ((insn >> (operand->shift))
276 & ((1L << operand->bits) - 1L));
279 if ((operand->flags & MN10200_OPERAND_SIGNED) != 0)
280 value = ((long)(value << (32 - operand->bits))
281 >> (32 - operand->bits));
285 || ((operand->flags & MN10200_OPERAND_PAREN) == 0)))
286 (*info->fprintf_func) (info->stream, ",");
290 if ((operand->flags & MN10200_OPERAND_DREG) != 0)
292 value = ((insn >> (operand->shift + extra_shift))
293 & ((1 << operand->bits) - 1));
294 (*info->fprintf_func) (info->stream, "d%d", value);
297 else if ((operand->flags & MN10200_OPERAND_AREG) != 0)
299 value = ((insn >> (operand->shift + extra_shift))
300 & ((1 << operand->bits) - 1));
301 (*info->fprintf_func) (info->stream, "a%d", value);
304 else if ((operand->flags & MN10200_OPERAND_PSW) != 0)
305 (*info->fprintf_func) (info->stream, "psw");
307 else if ((operand->flags & MN10200_OPERAND_MDR) != 0)
308 (*info->fprintf_func) (info->stream, "mdr");
310 else if ((operand->flags & MN10200_OPERAND_PAREN) != 0)
313 (*info->fprintf_func) (info->stream, ")");
316 (*info->fprintf_func) (info->stream, "(");
322 else if ((operand->flags & MN10200_OPERAND_PCREL) != 0)
323 (*info->print_address_func) ((value + memaddr + mysize) & 0xffffff, info);
325 else if ((operand->flags & MN10200_OPERAND_MEMADDR) != 0)
326 (*info->print_address_func) (value, info);
329 (*info->fprintf_func) (info->stream, "%ld", value);
339 (*info->fprintf_func) (info->stream, _("unknown\t0x%04lx"), insn);