Commit | Line | Data |
---|---|---|
252b5132 | 1 | /* Disassemble D30V instructions. |
9b201bb5 NC |
2 | Copyright 1997, 1998, 2000, 2001, 2005, 2007 |
3 | Free Software Foundation, Inc. | |
252b5132 | 4 | |
9b201bb5 NC |
5 | This file is part of the GNU opcodes library. |
6 | ||
7 | This library is free software; you can redistribute it and/or modify | |
47b0e7ad | 8 | it under the terms of the GNU General Public License as published by |
9b201bb5 NC |
9 | the Free Software Foundation; either version 3, or (at your option) |
10 | any later version. | |
252b5132 | 11 | |
9b201bb5 NC |
12 | It is distributed in the hope that it will be useful, but WITHOUT |
13 | ANY WARRANTY; without even the implied warranty of MERCHANTABILITY | |
14 | or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public | |
15 | License for more details. | |
252b5132 | 16 | |
47b0e7ad NC |
17 | You should have received a copy of the GNU General Public License |
18 | along with this program; if not, write to the Free Software | |
19 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, | |
20 | MA 02110-1301, USA. */ | |
252b5132 RH |
21 | |
22 | #include <stdio.h> | |
0d8dfecf | 23 | #include "sysdep.h" |
2dcee538 | 24 | #include "opcode/d30v.h" |
252b5132 RH |
25 | #include "dis-asm.h" |
26 | #include "opintl.h" | |
27 | ||
28 | #define PC_MASK 0xFFFFFFFF | |
29 | ||
2dcee538 KH |
30 | /* Return 0 if lookup fails, |
31 | 1 if found and only one form, | |
32 | 2 if found and there are short and long forms. */ | |
252b5132 | 33 | |
252b5132 | 34 | static int |
47b0e7ad | 35 | lookup_opcode (struct d30v_insn *insn, long num, int is_long) |
252b5132 | 36 | { |
2dcee538 | 37 | int i = 0, index; |
252b5132 | 38 | struct d30v_format *f; |
2dcee538 | 39 | struct d30v_opcode *op = (struct d30v_opcode *) d30v_opcode_table; |
252b5132 RH |
40 | int op1 = (num >> 25) & 0x7; |
41 | int op2 = (num >> 20) & 0x1f; | |
42 | int mod = (num >> 18) & 0x3; | |
43 | ||
2dcee538 KH |
44 | /* Find the opcode. */ |
45 | do | |
46 | { | |
47 | if ((op->op1 == op1) && (op->op2 == op2)) | |
48 | break; | |
49 | op++; | |
50 | } | |
51 | while (op->name); | |
252b5132 RH |
52 | |
53 | if (!op || !op->name) | |
54 | return 0; | |
55 | ||
56 | while (op->op1 == op1 && op->op2 == op2) | |
57 | { | |
2dcee538 | 58 | /* Scan through all the formats for the opcode. */ |
252b5132 | 59 | index = op->format[i++]; |
2dcee538 | 60 | do |
252b5132 | 61 | { |
2dcee538 | 62 | f = (struct d30v_format *) &d30v_format_table[index]; |
252b5132 RH |
63 | while (f->form == index) |
64 | { | |
65 | if ((!is_long || f->form >= LONG) && (f->modifier == mod)) | |
66 | { | |
67 | insn->form = f; | |
68 | break; | |
69 | } | |
70 | f++; | |
71 | } | |
72 | if (insn->form) | |
73 | break; | |
2dcee538 KH |
74 | } |
75 | while ((index = op->format[i++]) != 0); | |
252b5132 RH |
76 | if (insn->form) |
77 | break; | |
78 | op++; | |
2dcee538 | 79 | i = 0; |
252b5132 RH |
80 | } |
81 | if (insn->form == NULL) | |
82 | return 0; | |
83 | ||
84 | insn->op = op; | |
85 | insn->ecc = (num >> 28) & 0x7; | |
86 | if (op->format[1]) | |
87 | return 2; | |
88 | else | |
89 | return 1; | |
90 | } | |
91 | ||
47b0e7ad NC |
92 | static int |
93 | extract_value (long long num, struct d30v_operand *oper, int is_long) | |
94 | { | |
95 | int val; | |
96 | int shift = 12 - oper->position; | |
97 | int mask = (0xFFFFFFFF >> (32 - oper->bits)); | |
98 | ||
99 | if (is_long) | |
100 | { | |
101 | if (oper->bits == 32) | |
102 | /* Piece together 32-bit constant. */ | |
103 | val = ((num & 0x3FFFF) | |
104 | | ((num & 0xFF00000) >> 2) | |
105 | | ((num & 0x3F00000000LL) >> 6)); | |
106 | else | |
107 | val = (num >> (32 + shift)) & mask; | |
108 | } | |
109 | else | |
110 | val = (num >> shift) & mask; | |
111 | ||
112 | if (oper->flags & OPERAND_SHIFT) | |
113 | val <<= 3; | |
114 | ||
115 | return val; | |
116 | } | |
117 | ||
2dcee538 | 118 | static void |
47b0e7ad NC |
119 | print_insn (struct disassemble_info *info, |
120 | bfd_vma memaddr, | |
121 | long long num, | |
122 | struct d30v_insn *insn, | |
123 | int is_long, | |
124 | int show_ext) | |
252b5132 | 125 | { |
2dcee538 | 126 | int val, opnum, need_comma = 0; |
252b5132 | 127 | struct d30v_operand *oper; |
2dcee538 | 128 | int i, match, opind = 0, need_paren = 0, found_control = 0; |
252b5132 | 129 | |
2dcee538 | 130 | (*info->fprintf_func) (info->stream, "%s", insn->op->name); |
252b5132 | 131 | |
2dcee538 | 132 | /* Check for CMP or CMPU. */ |
252b5132 RH |
133 | if (d30v_operand_table[insn->form->operands[0]].flags & OPERAND_NAME) |
134 | { | |
135 | opind++; | |
2dcee538 KH |
136 | val = |
137 | extract_value (num, | |
138 | (struct d30v_operand *) &d30v_operand_table[insn->form->operands[0]], | |
139 | is_long); | |
140 | (*info->fprintf_func) (info->stream, "%s", d30v_cc_names[val]); | |
252b5132 RH |
141 | } |
142 | ||
2dcee538 | 143 | /* Add in ".s" or ".l". */ |
252b5132 RH |
144 | if (show_ext == 2) |
145 | { | |
146 | if (is_long) | |
147 | (*info->fprintf_func) (info->stream, ".l"); | |
148 | else | |
149 | (*info->fprintf_func) (info->stream, ".s"); | |
150 | } | |
151 | ||
152 | if (insn->ecc) | |
2dcee538 | 153 | (*info->fprintf_func) (info->stream, "/%s", d30v_ecc_names[insn->ecc]); |
252b5132 RH |
154 | |
155 | (*info->fprintf_func) (info->stream, "\t"); | |
156 | ||
157 | while ((opnum = insn->form->operands[opind++]) != 0) | |
158 | { | |
159 | int bits; | |
47b0e7ad | 160 | |
2dcee538 | 161 | oper = (struct d30v_operand *) &d30v_operand_table[opnum]; |
252b5132 RH |
162 | bits = oper->bits; |
163 | if (oper->flags & OPERAND_SHIFT) | |
164 | bits += 3; | |
165 | ||
2dcee538 KH |
166 | if (need_comma |
167 | && oper->flags != OPERAND_PLUS | |
168 | && oper->flags != OPERAND_MINUS) | |
252b5132 | 169 | { |
2dcee538 | 170 | need_comma = 0; |
252b5132 RH |
171 | (*info->fprintf_func) (info->stream, ", "); |
172 | } | |
173 | ||
174 | if (oper->flags == OPERAND_ATMINUS) | |
175 | { | |
176 | (*info->fprintf_func) (info->stream, "@-"); | |
177 | continue; | |
178 | } | |
179 | if (oper->flags == OPERAND_MINUS) | |
180 | { | |
2dcee538 | 181 | (*info->fprintf_func) (info->stream, "-"); |
252b5132 RH |
182 | continue; |
183 | } | |
184 | if (oper->flags == OPERAND_PLUS) | |
185 | { | |
2dcee538 | 186 | (*info->fprintf_func) (info->stream, "+"); |
252b5132 RH |
187 | continue; |
188 | } | |
189 | if (oper->flags == OPERAND_ATSIGN) | |
190 | { | |
2dcee538 | 191 | (*info->fprintf_func) (info->stream, "@"); |
252b5132 RH |
192 | continue; |
193 | } | |
194 | if (oper->flags == OPERAND_ATPAR) | |
195 | { | |
2dcee538 | 196 | (*info->fprintf_func) (info->stream, "@("); |
252b5132 RH |
197 | need_paren = 1; |
198 | continue; | |
199 | } | |
200 | ||
201 | if (oper->flags == OPERAND_SPECIAL) | |
202 | continue; | |
203 | ||
2dcee538 KH |
204 | val = extract_value (num, oper, is_long); |
205 | ||
252b5132 RH |
206 | if (oper->flags & OPERAND_REG) |
207 | { | |
208 | match = 0; | |
209 | if (oper->flags & OPERAND_CONTROL) | |
210 | { | |
2dcee538 KH |
211 | struct d30v_operand *oper3 = |
212 | (struct d30v_operand *) &d30v_operand_table[insn->form->operands[2]]; | |
213 | int id = extract_value (num, oper3, is_long); | |
47b0e7ad | 214 | |
252b5132 | 215 | found_control = 1; |
2dcee538 | 216 | switch (id) |
252b5132 RH |
217 | { |
218 | case 0: | |
219 | val |= OPERAND_CONTROL; | |
220 | break; | |
221 | case 1: | |
222 | case 2: | |
223 | val = OPERAND_CONTROL + MAX_CONTROL_REG + id; | |
224 | break; | |
225 | case 3: | |
226 | val |= OPERAND_FLAG; | |
227 | break; | |
228 | default: | |
2dcee538 | 229 | fprintf (stderr, "illegal id (%d)\n", id); |
252b5132 RH |
230 | } |
231 | } | |
232 | else if (oper->flags & OPERAND_ACC) | |
233 | val |= OPERAND_ACC; | |
234 | else if (oper->flags & OPERAND_FLAG) | |
235 | val |= OPERAND_FLAG; | |
2dcee538 | 236 | for (i = 0; i < reg_name_cnt (); i++) |
252b5132 RH |
237 | { |
238 | if (val == pre_defined_registers[i].value) | |
239 | { | |
240 | if (pre_defined_registers[i].pname) | |
241 | (*info->fprintf_func) | |
2dcee538 | 242 | (info->stream, "%s", pre_defined_registers[i].pname); |
252b5132 RH |
243 | else |
244 | (*info->fprintf_func) | |
2dcee538 KH |
245 | (info->stream, "%s", pre_defined_registers[i].name); |
246 | match = 1; | |
252b5132 RH |
247 | break; |
248 | } | |
249 | } | |
2dcee538 | 250 | if (match == 0) |
252b5132 | 251 | { |
2dcee538 KH |
252 | /* This would only get executed if a register was not in |
253 | the register table. */ | |
252b5132 | 254 | (*info->fprintf_func) |
2dcee538 | 255 | (info->stream, _("<unknown register %d>"), val & 0x3F); |
252b5132 RH |
256 | } |
257 | } | |
866afedc NC |
258 | /* repeati has a relocation, but its first argument is a plain |
259 | immediate. OTOH instructions like djsri have a pc-relative | |
d9a35582 | 260 | delay target, but an absolute jump target. Therefore, a test |
866afedc NC |
261 | of insn->op->reloc_flag is not specific enough; we must test |
262 | if the actual operand we are handling now is pc-relative. */ | |
263 | else if (oper->flags & OPERAND_PCREL) | |
252b5132 | 264 | { |
866afedc | 265 | int neg = 0; |
2dcee538 | 266 | |
866afedc NC |
267 | /* IMM6S3 is unsigned. */ |
268 | if (oper->flags & OPERAND_SIGNED || bits == 32) | |
252b5132 | 269 | { |
866afedc NC |
270 | long max; |
271 | max = (1 << (bits - 1)); | |
272 | if (val & max) | |
273 | { | |
274 | if (bits == 32) | |
275 | val = -val; | |
276 | else | |
2dcee538 | 277 | val = -val & ((1 << bits) - 1); |
866afedc NC |
278 | neg = 1; |
279 | } | |
280 | } | |
281 | if (neg) | |
282 | { | |
2dcee538 | 283 | (*info->fprintf_func) (info->stream, "-%x\t(", val); |
866afedc NC |
284 | (*info->print_address_func) ((memaddr - val) & PC_MASK, info); |
285 | (*info->fprintf_func) (info->stream, ")"); | |
252b5132 | 286 | } |
866afedc | 287 | else |
252b5132 | 288 | { |
2dcee538 | 289 | (*info->fprintf_func) (info->stream, "%x\t(", val); |
866afedc NC |
290 | (*info->print_address_func) ((memaddr + val) & PC_MASK, info); |
291 | (*info->fprintf_func) (info->stream, ")"); | |
252b5132 | 292 | } |
252b5132 RH |
293 | } |
294 | else if (insn->op->reloc_flag == RELOC_ABS) | |
295 | { | |
296 | (*info->print_address_func) (val, info); | |
297 | } | |
298 | else | |
299 | { | |
300 | if (oper->flags & OPERAND_SIGNED) | |
301 | { | |
302 | int max = (1 << (bits - 1)); | |
47b0e7ad | 303 | |
252b5132 RH |
304 | if (val & max) |
305 | { | |
306 | val = -val; | |
307 | if (bits < 32) | |
308 | val &= ((1 << bits) - 1); | |
309 | (*info->fprintf_func) (info->stream, "-"); | |
310 | } | |
311 | } | |
2dcee538 | 312 | (*info->fprintf_func) (info->stream, "0x%x", val); |
252b5132 | 313 | } |
2dcee538 | 314 | /* If there is another operand, then write a comma and space. */ |
252b5132 RH |
315 | if (insn->form->operands[opind] && !(found_control && opind == 2)) |
316 | need_comma = 1; | |
317 | } | |
318 | if (need_paren) | |
319 | (*info->fprintf_func) (info->stream, ")"); | |
320 | } | |
321 | ||
47b0e7ad NC |
322 | int |
323 | print_insn_d30v (bfd_vma memaddr, struct disassemble_info *info) | |
252b5132 | 324 | { |
47b0e7ad NC |
325 | int status, result; |
326 | bfd_byte buffer[12]; | |
327 | unsigned long in1, in2; | |
328 | struct d30v_insn insn; | |
329 | long long num; | |
252b5132 | 330 | |
47b0e7ad NC |
331 | insn.form = NULL; |
332 | ||
333 | info->bytes_per_line = 8; | |
334 | info->bytes_per_chunk = 4; | |
335 | info->display_endian = BFD_ENDIAN_BIG; | |
336 | ||
337 | status = (*info->read_memory_func) (memaddr, buffer, 4, info); | |
338 | if (status != 0) | |
252b5132 | 339 | { |
47b0e7ad NC |
340 | (*info->memory_error_func) (status, memaddr, info); |
341 | return -1; | |
342 | } | |
343 | in1 = bfd_getb32 (buffer); | |
344 | ||
345 | status = (*info->read_memory_func) (memaddr + 4, buffer, 4, info); | |
346 | if (status != 0) | |
347 | { | |
348 | info->bytes_per_line = 8; | |
349 | if (!(result = lookup_opcode (&insn, in1, 0))) | |
0fd3a477 | 350 | (*info->fprintf_func) (info->stream, ".long\t0x%lx", in1); |
47b0e7ad NC |
351 | else |
352 | print_insn (info, memaddr, (long long) in1, &insn, 0, result); | |
353 | return 4; | |
354 | } | |
355 | in2 = bfd_getb32 (buffer); | |
356 | ||
357 | if (in1 & in2 & FM01) | |
358 | { | |
359 | /* LONG instruction. */ | |
360 | if (!(result = lookup_opcode (&insn, in1, 1))) | |
252b5132 | 361 | { |
0fd3a477 | 362 | (*info->fprintf_func) (info->stream, ".long\t0x%lx,0x%lx", in1, in2); |
47b0e7ad | 363 | return 8; |
252b5132 | 364 | } |
47b0e7ad NC |
365 | num = (long long) in1 << 32 | in2; |
366 | print_insn (info, memaddr, num, &insn, 1, result); | |
252b5132 RH |
367 | } |
368 | else | |
47b0e7ad NC |
369 | { |
370 | num = in1; | |
371 | if (!(result = lookup_opcode (&insn, in1, 0))) | |
0fd3a477 | 372 | (*info->fprintf_func) (info->stream, ".long\t0x%lx", in1); |
47b0e7ad NC |
373 | else |
374 | print_insn (info, memaddr, num, &insn, 0, result); | |
252b5132 | 375 | |
47b0e7ad NC |
376 | switch (((in1 >> 31) << 1) | (in2 >> 31)) |
377 | { | |
378 | case 0: | |
379 | (*info->fprintf_func) (info->stream, "\t||\t"); | |
380 | break; | |
381 | case 1: | |
382 | (*info->fprintf_func) (info->stream, "\t->\t"); | |
383 | break; | |
384 | case 2: | |
385 | (*info->fprintf_func) (info->stream, "\t<-\t"); | |
386 | default: | |
387 | break; | |
388 | } | |
252b5132 | 389 | |
47b0e7ad NC |
390 | insn.form = NULL; |
391 | num = in2; | |
392 | if (!(result = lookup_opcode (&insn, in2, 0))) | |
0fd3a477 | 393 | (*info->fprintf_func) (info->stream, ".long\t0x%lx", in2); |
47b0e7ad NC |
394 | else |
395 | print_insn (info, memaddr, num, &insn, 0, result); | |
396 | } | |
397 | return 8; | |
252b5132 | 398 | } |