Commit | Line | Data |
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252b5132 | 1 | /* Disassemble MN10200 instructions. |
b3adc24a | 2 | Copyright (C) 1996-2020 Free Software Foundation, Inc. |
252b5132 | 3 | |
9b201bb5 NC |
4 | This file is part of the GNU opcodes library. |
5 | ||
6 | This library is free software; you can redistribute it and/or modify | |
47b0e7ad | 7 | it under the terms of the GNU General Public License as published by |
9b201bb5 NC |
8 | the Free Software Foundation; either version 3, or (at your option) |
9 | any later version. | |
252b5132 | 10 | |
9b201bb5 NC |
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. | |
252b5132 | 15 | |
47b0e7ad NC |
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. */ | |
252b5132 | 20 | |
0d8dfecf | 21 | #include "sysdep.h" |
df7b86aa | 22 | #include <stdio.h> |
43e65147 | 23 | #include "opcode/mn10200.h" |
88c1242d | 24 | #include "disassemble.h" |
252b5132 RH |
25 | #include "opintl.h" |
26 | ||
47b0e7ad NC |
27 | static void |
28 | disassemble (bfd_vma memaddr, | |
29 | struct disassemble_info *info, | |
30 | unsigned long insn, | |
31 | unsigned long extension, | |
32 | unsigned int size) | |
33 | { | |
34 | struct mn10200_opcode *op = (struct mn10200_opcode *)mn10200_opcodes; | |
35 | const struct mn10200_operand *operand; | |
36 | int match = 0; | |
37 | ||
38 | /* Find the opcode. */ | |
39 | while (op->name) | |
40 | { | |
41 | int mysize, extra_shift; | |
42 | ||
43 | if (op->format == FMT_1) | |
44 | mysize = 1; | |
45 | else if (op->format == FMT_2 | |
46 | || op->format == FMT_4) | |
47 | mysize = 2; | |
48 | else if (op->format == FMT_3 | |
49 | || op->format == FMT_5) | |
50 | mysize = 3; | |
51 | else if (op->format == FMT_6) | |
52 | mysize = 4; | |
53 | else if (op->format == FMT_7) | |
54 | mysize = 5; | |
55 | else | |
56 | abort (); | |
43e65147 | 57 | |
47b0e7ad NC |
58 | if (op->format == FMT_2 || op->format == FMT_5) |
59 | extra_shift = 8; | |
60 | else if (op->format == FMT_3 | |
61 | || op->format == FMT_6 | |
62 | || op->format == FMT_7) | |
63 | extra_shift = 16; | |
64 | else | |
65 | extra_shift = 0; | |
66 | ||
67 | if ((op->mask & insn) == op->opcode | |
68 | && size == (unsigned int) mysize) | |
69 | { | |
70 | const unsigned char *opindex_ptr; | |
71 | unsigned int nocomma; | |
72 | int paren = 0; | |
43e65147 | 73 | |
47b0e7ad NC |
74 | match = 1; |
75 | (*info->fprintf_func) (info->stream, "%s\t", op->name); | |
76 | ||
77 | /* Now print the operands. */ | |
78 | for (opindex_ptr = op->operands, nocomma = 1; | |
79 | *opindex_ptr != 0; | |
80 | opindex_ptr++) | |
81 | { | |
82 | unsigned long value; | |
83 | ||
84 | operand = &mn10200_operands[*opindex_ptr]; | |
85 | ||
441af85b AM |
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) | |
47b0e7ad NC |
91 | { |
92 | value = (insn & 0xffff) << 8; | |
93 | value |= extension; | |
94 | } | |
95 | else | |
441af85b AM |
96 | value = ((insn >> (operand->shift)) |
97 | & ((1L << operand->bits) - 1L)); | |
47b0e7ad NC |
98 | |
99 | if ((operand->flags & MN10200_OPERAND_SIGNED) != 0) | |
100 | value = ((long)(value << (32 - operand->bits)) | |
101 | >> (32 - operand->bits)); | |
102 | ||
103 | if (!nocomma | |
104 | && (!paren | |
105 | || ((operand->flags & MN10200_OPERAND_PAREN) == 0))) | |
106 | (*info->fprintf_func) (info->stream, ","); | |
107 | ||
108 | nocomma = 0; | |
43e65147 | 109 | |
47b0e7ad | 110 | if ((operand->flags & MN10200_OPERAND_DREG) != 0) |
441af85b | 111 | (*info->fprintf_func) (info->stream, "d%ld", value); |
47b0e7ad NC |
112 | |
113 | else if ((operand->flags & MN10200_OPERAND_AREG) != 0) | |
441af85b | 114 | (*info->fprintf_func) (info->stream, "a%ld", value); |
47b0e7ad NC |
115 | |
116 | else if ((operand->flags & MN10200_OPERAND_PSW) != 0) | |
117 | (*info->fprintf_func) (info->stream, "psw"); | |
118 | ||
119 | else if ((operand->flags & MN10200_OPERAND_MDR) != 0) | |
120 | (*info->fprintf_func) (info->stream, "mdr"); | |
121 | ||
122 | else if ((operand->flags & MN10200_OPERAND_PAREN) != 0) | |
123 | { | |
124 | if (paren) | |
125 | (*info->fprintf_func) (info->stream, ")"); | |
126 | else | |
127 | { | |
128 | (*info->fprintf_func) (info->stream, "("); | |
129 | nocomma = 1; | |
130 | } | |
131 | paren = !paren; | |
132 | } | |
133 | ||
134 | else if ((operand->flags & MN10200_OPERAND_PCREL) != 0) | |
135 | (*info->print_address_func) | |
136 | ((value + memaddr + mysize) & 0xffffff, info); | |
137 | ||
138 | else if ((operand->flags & MN10200_OPERAND_MEMADDR) != 0) | |
139 | (*info->print_address_func) (value, info); | |
140 | ||
43e65147 | 141 | else |
47b0e7ad NC |
142 | (*info->fprintf_func) (info->stream, "%ld", value); |
143 | } | |
144 | /* All done. */ | |
145 | break; | |
146 | } | |
147 | op++; | |
148 | } | |
149 | ||
150 | if (!match) | |
151 | (*info->fprintf_func) (info->stream, _("unknown\t0x%04lx"), insn); | |
152 | } | |
252b5132 | 153 | |
43e65147 | 154 | int |
47b0e7ad | 155 | print_insn_mn10200 (bfd_vma memaddr, struct disassemble_info *info) |
252b5132 RH |
156 | { |
157 | int status; | |
158 | bfd_byte buffer[4]; | |
159 | unsigned long insn; | |
160 | unsigned long extension = 0; | |
161 | unsigned int consume; | |
162 | ||
163 | /* First figure out how big the opcode is. */ | |
164 | status = (*info->read_memory_func) (memaddr, buffer, 1, info); | |
165 | if (status != 0) | |
166 | { | |
167 | (*info->memory_error_func) (status, memaddr, info); | |
168 | return -1; | |
169 | } | |
170 | ||
171 | insn = *(unsigned char *) buffer; | |
172 | ||
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) | |
187 | { | |
188 | extension = 0; | |
189 | consume = 1; | |
190 | } | |
191 | ||
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) | |
210 | { | |
211 | status = (*info->read_memory_func) (memaddr, buffer, 2, info); | |
212 | if (status != 0) | |
213 | { | |
214 | (*info->memory_error_func) (status, memaddr, info); | |
215 | return -1; | |
216 | } | |
217 | insn = bfd_getb16 (buffer); | |
218 | consume = 2; | |
219 | } | |
220 | ||
221 | /* These are three byte insns with a 16bit operand in little | |
222 | endian form. */ | |
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) | |
232 | { | |
233 | status = (*info->read_memory_func) (memaddr + 1, buffer, 2, info); | |
234 | if (status != 0) | |
235 | { | |
236 | (*info->memory_error_func) (status, memaddr, info); | |
237 | return -1; | |
238 | } | |
239 | insn <<= 16; | |
240 | insn |= bfd_getl16 (buffer); | |
241 | extension = 0; | |
242 | consume = 3; | |
243 | } | |
244 | /* These are three byte insns too, but we don't have to mess with | |
245 | endianness stuff. */ | |
246 | else if ((insn & 0xff) == 0xf5) | |
247 | { | |
248 | status = (*info->read_memory_func) (memaddr + 1, buffer, 2, info); | |
249 | if (status != 0) | |
250 | { | |
251 | (*info->memory_error_func) (status, memaddr, info); | |
252 | return -1; | |
253 | } | |
254 | insn <<= 16; | |
255 | insn |= bfd_getb16 (buffer); | |
256 | extension = 0; | |
257 | consume = 3; | |
258 | } | |
259 | ||
260 | /* These are four byte insns. */ | |
261 | else if ((insn & 0xff) == 0xf7) | |
262 | { | |
263 | status = (*info->read_memory_func) (memaddr, buffer, 2, info); | |
264 | if (status != 0) | |
265 | { | |
266 | (*info->memory_error_func) (status, memaddr, info); | |
267 | return -1; | |
268 | } | |
269 | insn = bfd_getb16 (buffer); | |
270 | insn <<= 16; | |
271 | status = (*info->read_memory_func) (memaddr + 2, buffer, 2, info); | |
272 | if (status != 0) | |
273 | { | |
274 | (*info->memory_error_func) (status, memaddr, info); | |
275 | return -1; | |
276 | } | |
277 | insn |= bfd_getl16 (buffer); | |
278 | extension = 0; | |
279 | consume = 4; | |
280 | } | |
281 | ||
282 | /* These are five byte insns. */ | |
283 | else if ((insn & 0xff) == 0xf4) | |
284 | { | |
285 | status = (*info->read_memory_func) (memaddr, buffer, 2, info); | |
286 | if (status != 0) | |
287 | { | |
288 | (*info->memory_error_func) (status, memaddr, info); | |
289 | return -1; | |
290 | } | |
291 | insn = bfd_getb16 (buffer); | |
292 | insn <<= 16; | |
293 | ||
294 | status = (*info->read_memory_func) (memaddr + 4, buffer, 1, info); | |
295 | if (status != 0) | |
296 | { | |
297 | (*info->memory_error_func) (status, memaddr, info); | |
298 | return -1; | |
299 | } | |
300 | insn |= (*(unsigned char *)buffer << 8) & 0xff00; | |
301 | ||
302 | status = (*info->read_memory_func) (memaddr + 3, buffer, 1, info); | |
303 | if (status != 0) | |
304 | { | |
305 | (*info->memory_error_func) (status, memaddr, info); | |
306 | return -1; | |
307 | } | |
308 | insn |= (*(unsigned char *)buffer) & 0xff; | |
309 | ||
310 | status = (*info->read_memory_func) (memaddr + 2, buffer, 1, info); | |
311 | if (status != 0) | |
312 | { | |
313 | (*info->memory_error_func) (status, memaddr, info); | |
314 | return -1; | |
315 | } | |
316 | extension = (*(unsigned char *)buffer) & 0xff; | |
317 | consume = 5; | |
318 | } | |
319 | else | |
320 | { | |
0fd3a477 | 321 | (*info->fprintf_func) (info->stream, _("unknown\t0x%02lx"), insn); |
252b5132 RH |
322 | return 1; |
323 | } | |
324 | ||
325 | disassemble (memaddr, info, insn, extension, consume); | |
326 | ||
327 | return consume; | |
328 | } |