1 /* Disassemble MN10200 instructions.
2 Copyright (C) 1996-2020 Free Software Foundation, Inc.
4 This file is part of the GNU opcodes library.
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)
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.
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. */
23 #include "opcode/mn10200.h"
24 #include "disassemble.h"
28 disassemble (bfd_vma memaddr,
29 struct disassemble_info *info,
31 unsigned long extension,
34 struct mn10200_opcode *op = (struct mn10200_opcode *)mn10200_opcodes;
35 const struct mn10200_operand *operand;
38 /* Find the opcode. */
41 int mysize, extra_shift;
43 if (op->format == FMT_1)
45 else if (op->format == FMT_2
46 || op->format == FMT_4)
48 else if (op->format == FMT_3
49 || op->format == FMT_5)
51 else if (op->format == FMT_6)
53 else if (op->format == FMT_7)
58 if (op->format == FMT_2 || op->format == FMT_5)
60 else if (op->format == FMT_3
61 || op->format == FMT_6
62 || op->format == FMT_7)
67 if ((op->mask & insn) == op->opcode
68 && size == (unsigned int) mysize)
70 const unsigned char *opindex_ptr;
75 (*info->fprintf_func) (info->stream, "%s\t", op->name);
77 /* Now print the operands. */
78 for (opindex_ptr = op->operands, nocomma = 1;
84 operand = &mn10200_operands[*opindex_ptr];
86 if ((operand->flags & MN10200_OPERAND_DREG) != 0
87 || (operand->flags & MN10200_OPERAND_AREG) != 0)
88 value = ((insn >> (operand->shift + extra_shift))
89 & ((1 << operand->bits) - 1));
90 else if ((operand->flags & MN10200_OPERAND_EXTENDED) != 0)
92 value = (insn & 0xffff) << 8;
96 value = ((insn >> (operand->shift))
97 & ((1L << operand->bits) - 1L));
99 if ((operand->flags & MN10200_OPERAND_SIGNED) != 0)
100 value = ((long)(value << (32 - operand->bits))
101 >> (32 - operand->bits));
105 || ((operand->flags & MN10200_OPERAND_PAREN) == 0)))
106 (*info->fprintf_func) (info->stream, ",");
110 if ((operand->flags & MN10200_OPERAND_DREG) != 0)
111 (*info->fprintf_func) (info->stream, "d%ld", value);
113 else if ((operand->flags & MN10200_OPERAND_AREG) != 0)
114 (*info->fprintf_func) (info->stream, "a%ld", value);
116 else if ((operand->flags & MN10200_OPERAND_PSW) != 0)
117 (*info->fprintf_func) (info->stream, "psw");
119 else if ((operand->flags & MN10200_OPERAND_MDR) != 0)
120 (*info->fprintf_func) (info->stream, "mdr");
122 else if ((operand->flags & MN10200_OPERAND_PAREN) != 0)
125 (*info->fprintf_func) (info->stream, ")");
128 (*info->fprintf_func) (info->stream, "(");
134 else if ((operand->flags & MN10200_OPERAND_PCREL) != 0)
135 (*info->print_address_func)
136 ((value + memaddr + mysize) & 0xffffff, info);
138 else if ((operand->flags & MN10200_OPERAND_MEMADDR) != 0)
139 (*info->print_address_func) (value, info);
142 (*info->fprintf_func) (info->stream, "%ld", value);
151 (*info->fprintf_func) (info->stream, _("unknown\t0x%04lx"), insn);
155 print_insn_mn10200 (bfd_vma memaddr, struct disassemble_info *info)
160 unsigned long extension = 0;
161 unsigned int consume;
163 /* First figure out how big the opcode is. */
164 status = (*info->read_memory_func) (memaddr, buffer, 1, info);
167 (*info->memory_error_func) (status, memaddr, info);
171 insn = *(unsigned char *) buffer;
173 /* These are one byte insns. */
174 if ((insn & 0xf0) == 0x00
175 || (insn & 0xf0) == 0x10
176 || (insn & 0xf0) == 0x20
177 || (insn & 0xf0) == 0x30
178 || ((insn & 0xf0) == 0x80
179 && (insn & 0x0c) >> 2 != (insn & 0x03))
180 || (insn & 0xf0) == 0x90
181 || (insn & 0xf0) == 0xa0
182 || (insn & 0xf0) == 0xb0
183 || (insn & 0xff) == 0xeb
184 || (insn & 0xff) == 0xf6
185 || (insn & 0xff) == 0xfe
186 || (insn & 0xff) == 0xff)
192 /* These are two byte insns. */
193 else if ((insn & 0xf0) == 0x40
194 || (insn & 0xf0) == 0x50
195 || (insn & 0xf0) == 0x60
196 || (insn & 0xf0) == 0x70
197 || (insn & 0xf0) == 0x80
198 || (insn & 0xfc) == 0xd0
199 || (insn & 0xfc) == 0xd4
200 || (insn & 0xfc) == 0xd8
201 || (insn & 0xfc) == 0xe0
202 || (insn & 0xfc) == 0xe4
203 || (insn & 0xff) == 0xe8
204 || (insn & 0xff) == 0xe9
205 || (insn & 0xff) == 0xea
206 || (insn & 0xff) == 0xf0
207 || (insn & 0xff) == 0xf1
208 || (insn & 0xff) == 0xf2
209 || (insn & 0xff) == 0xf3)
211 status = (*info->read_memory_func) (memaddr, buffer, 2, info);
214 (*info->memory_error_func) (status, memaddr, info);
217 insn = bfd_getb16 (buffer);
221 /* These are three byte insns with a 16bit operand in little
223 else if ((insn & 0xf0) == 0xc0
224 || (insn & 0xfc) == 0xdc
225 || (insn & 0xfc) == 0xec
226 || (insn & 0xff) == 0xf8
227 || (insn & 0xff) == 0xf9
228 || (insn & 0xff) == 0xfa
229 || (insn & 0xff) == 0xfb
230 || (insn & 0xff) == 0xfc
231 || (insn & 0xff) == 0xfd)
233 status = (*info->read_memory_func) (memaddr + 1, buffer, 2, info);
236 (*info->memory_error_func) (status, memaddr, info);
240 insn |= bfd_getl16 (buffer);
244 /* These are three byte insns too, but we don't have to mess with
246 else if ((insn & 0xff) == 0xf5)
248 status = (*info->read_memory_func) (memaddr + 1, buffer, 2, info);
251 (*info->memory_error_func) (status, memaddr, info);
255 insn |= bfd_getb16 (buffer);
260 /* These are four byte insns. */
261 else if ((insn & 0xff) == 0xf7)
263 status = (*info->read_memory_func) (memaddr, buffer, 2, info);
266 (*info->memory_error_func) (status, memaddr, info);
269 insn = bfd_getb16 (buffer);
271 status = (*info->read_memory_func) (memaddr + 2, buffer, 2, info);
274 (*info->memory_error_func) (status, memaddr, info);
277 insn |= bfd_getl16 (buffer);
282 /* These are five byte insns. */
283 else if ((insn & 0xff) == 0xf4)
285 status = (*info->read_memory_func) (memaddr, buffer, 2, info);
288 (*info->memory_error_func) (status, memaddr, info);
291 insn = bfd_getb16 (buffer);
294 status = (*info->read_memory_func) (memaddr + 4, buffer, 1, info);
297 (*info->memory_error_func) (status, memaddr, info);
300 insn |= (*(unsigned char *)buffer << 8) & 0xff00;
302 status = (*info->read_memory_func) (memaddr + 3, buffer, 1, info);
305 (*info->memory_error_func) (status, memaddr, info);
308 insn |= (*(unsigned char *)buffer) & 0xff;
310 status = (*info->read_memory_func) (memaddr + 2, buffer, 1, info);
313 (*info->memory_error_func) (status, memaddr, info);
316 extension = (*(unsigned char *)buffer) & 0xff;
321 (*info->fprintf_func) (info->stream, _("unknown\t0x%02lx"), insn);
325 disassemble (memaddr, info, insn, extension, consume);