Commit | Line | Data |
---|---|---|
c08a4e6b | 1 | /* Instruction printing code for the ARM |
0ff7faaf | 2 | Copyright (C) 1994, 95, 96, 97, 1998 Free Software Foundation, Inc. |
c08a4e6b NC |
3 | Contributed by Richard Earnshaw (rwe@pegasus.esprit.ec.org) |
4 | Modification by James G. Smith (jsmith@cygnus.co.uk) | |
5 | ||
6 | This file is part of libopcodes. | |
7 | ||
8 | This program is free software; you can redistribute it and/or modify it under | |
9 | the terms of the GNU General Public License as published by the Free | |
10 | Software Foundation; either version 2 of the License, or (at your option) | |
11 | any later version. | |
12 | ||
13 | This program is distributed in the hope that it will be useful, but WITHOUT | |
14 | ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
15 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
16 | more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
19 | along with this program; if not, write to the Free Software | |
20 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ | |
21 | ||
22 | #include "dis-asm.h" | |
23 | #define DEFINE_TABLE | |
24 | #include "arm-opc.h" | |
0c4f6dc2 NC |
25 | #include "coff/internal.h" |
26 | #include "libcoff.h" | |
0ff7faaf CM |
27 | #include "opintl.h" |
28 | ||
0ff7faaf CM |
29 | /* FIXME: This shouldn't be done here */ |
30 | #include "elf-bfd.h" | |
31 | #include "elf/internal.h" | |
c08a4e6b NC |
32 | |
33 | static char *arm_conditional[] = | |
34 | {"eq", "ne", "cs", "cc", "mi", "pl", "vs", "vc", | |
35 | "hi", "ls", "ge", "lt", "gt", "le", "", "nv"}; | |
36 | ||
37 | static char *arm_regnames[] = | |
38 | {"r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", | |
39 | "r8", "r9", "sl", "fp", "ip", "sp", "lr", "pc"}; | |
40 | ||
41 | static char *arm_fp_const[] = | |
42 | {"0.0", "1.0", "2.0", "3.0", "4.0", "5.0", "0.5", "10.0"}; | |
43 | ||
44 | static char *arm_shift[] = | |
45 | {"lsl", "lsr", "asr", "ror"}; | |
46 | ||
47 | static int print_insn_arm PARAMS ((bfd_vma, struct disassemble_info *, | |
48 | long)); | |
49 | ||
50 | static void | |
51 | arm_decode_shift (given, func, stream) | |
52 | long given; | |
53 | fprintf_ftype func; | |
54 | void *stream; | |
55 | { | |
56 | func (stream, "%s", arm_regnames[given & 0xf]); | |
57 | if ((given & 0xff0) != 0) | |
58 | { | |
59 | if ((given & 0x10) == 0) | |
60 | { | |
61 | int amount = (given & 0xf80) >> 7; | |
62 | int shift = (given & 0x60) >> 5; | |
63 | if (amount == 0) | |
64 | { | |
65 | if (shift == 3) | |
66 | { | |
67 | func (stream, ", rrx"); | |
68 | return; | |
69 | } | |
70 | amount = 32; | |
71 | } | |
72 | func (stream, ", %s #%d", arm_shift[shift], amount); | |
73 | } | |
74 | else | |
75 | func (stream, ", %s %s", arm_shift[(given & 0x60) >> 5], | |
76 | arm_regnames[(given & 0xf00) >> 8]); | |
77 | } | |
78 | } | |
79 | ||
80 | /* Print one instruction from PC on INFO->STREAM. | |
81 | Return the size of the instruction (always 4 on ARM). */ | |
82 | ||
83 | static int | |
84 | print_insn_arm (pc, info, given) | |
85 | bfd_vma pc; | |
86 | struct disassemble_info *info; | |
87 | long given; | |
88 | { | |
89 | struct arm_opcode *insn; | |
90 | void *stream = info->stream; | |
91 | fprintf_ftype func = info->fprintf_func; | |
92 | ||
93 | for (insn = arm_opcodes; insn->assembler; insn++) | |
94 | { | |
95 | if ((given & insn->mask) == insn->value) | |
96 | { | |
97 | char *c; | |
98 | for (c = insn->assembler; *c; c++) | |
99 | { | |
100 | if (*c == '%') | |
101 | { | |
102 | switch (*++c) | |
103 | { | |
104 | case '%': | |
105 | func (stream, "%%"); | |
106 | break; | |
107 | ||
108 | case 'a': | |
109 | if (((given & 0x000f0000) == 0x000f0000) | |
110 | && ((given & 0x02000000) == 0)) | |
111 | { | |
112 | int offset = given & 0xfff; | |
113 | if ((given & 0x00800000) == 0) | |
114 | offset = -offset; | |
115 | (*info->print_address_func) | |
116 | (offset + pc + 8, info); | |
117 | } | |
118 | else | |
119 | { | |
120 | func (stream, "[%s", | |
121 | arm_regnames[(given >> 16) & 0xf]); | |
122 | if ((given & 0x01000000) != 0) | |
123 | { | |
124 | if ((given & 0x02000000) == 0) | |
125 | { | |
126 | int offset = given & 0xfff; | |
127 | if (offset) | |
128 | func (stream, ", %s#%d", | |
129 | (((given & 0x00800000) == 0) | |
130 | ? "-" : ""), offset); | |
131 | } | |
132 | else | |
133 | { | |
134 | func (stream, ", %s", | |
135 | (((given & 0x00800000) == 0) | |
136 | ? "-" : "")); | |
137 | arm_decode_shift (given, func, stream); | |
138 | } | |
139 | ||
140 | func (stream, "]%s", | |
141 | ((given & 0x00200000) != 0) ? "!" : ""); | |
142 | } | |
143 | else | |
144 | { | |
145 | if ((given & 0x02000000) == 0) | |
146 | { | |
147 | int offset = given & 0xfff; | |
148 | if (offset) | |
149 | func (stream, "], %s#%d", | |
150 | (((given & 0x00800000) == 0) | |
151 | ? "-" : ""), offset); | |
152 | else | |
153 | func (stream, "]"); | |
154 | } | |
155 | else | |
156 | { | |
157 | func (stream, "], %s", | |
158 | (((given & 0x00800000) == 0) | |
159 | ? "-" : "")); | |
160 | arm_decode_shift (given, func, stream); | |
161 | } | |
162 | } | |
163 | } | |
164 | break; | |
165 | ||
166 | case 's': | |
167 | if ((given & 0x004f0000) == 0x004f0000) | |
168 | { | |
169 | /* PC relative with immediate offset */ | |
170 | int offset = ((given & 0xf00) >> 4) | (given & 0xf); | |
171 | if ((given & 0x00800000) == 0) | |
172 | offset = -offset; | |
173 | (*info->print_address_func) | |
174 | (offset + pc + 8, info); | |
175 | } | |
176 | else | |
177 | { | |
178 | func (stream, "[%s", | |
179 | arm_regnames[(given >> 16) & 0xf]); | |
180 | if ((given & 0x01000000) != 0) | |
181 | { | |
182 | /* pre-indexed */ | |
183 | if ((given & 0x00400000) == 0x00400000) | |
184 | { | |
185 | /* immediate */ | |
186 | int offset = ((given & 0xf00) >> 4) | (given & 0xf); | |
187 | if (offset) | |
188 | func (stream, ", %s#%d", | |
189 | (((given & 0x00800000) == 0) | |
190 | ? "-" : ""), offset); | |
191 | } | |
192 | else | |
193 | { | |
194 | /* register */ | |
195 | func (stream, ", %s%s", | |
196 | (((given & 0x00800000) == 0) | |
197 | ? "-" : ""), | |
198 | arm_regnames[given & 0xf]); | |
199 | } | |
200 | ||
201 | func (stream, "]%s", | |
202 | ((given & 0x00200000) != 0) ? "!" : ""); | |
203 | } | |
204 | else | |
205 | { | |
206 | /* post-indexed */ | |
207 | if ((given & 0x00400000) == 0x00400000) | |
208 | { | |
209 | /* immediate */ | |
210 | int offset = ((given & 0xf00) >> 4) | (given & 0xf); | |
211 | if (offset) | |
212 | func (stream, "], %s#%d", | |
213 | (((given & 0x00800000) == 0) | |
214 | ? "-" : ""), offset); | |
215 | else | |
216 | func (stream, "]"); | |
217 | } | |
218 | else | |
219 | { | |
220 | /* register */ | |
221 | func (stream, "], %s%s", | |
222 | (((given & 0x00800000) == 0) | |
223 | ? "-" : ""), | |
224 | arm_regnames[given & 0xf]); | |
225 | } | |
226 | } | |
227 | } | |
228 | break; | |
229 | ||
230 | case 'b': | |
231 | (*info->print_address_func) | |
232 | (BDISP (given) * 4 + pc + 8, info); | |
233 | break; | |
234 | ||
235 | case 'c': | |
236 | func (stream, "%s", | |
237 | arm_conditional [(given >> 28) & 0xf]); | |
238 | break; | |
239 | ||
240 | case 'm': | |
241 | { | |
242 | int started = 0; | |
243 | int reg; | |
244 | ||
245 | func (stream, "{"); | |
246 | for (reg = 0; reg < 16; reg++) | |
247 | if ((given & (1 << reg)) != 0) | |
248 | { | |
249 | if (started) | |
250 | func (stream, ", "); | |
251 | started = 1; | |
252 | func (stream, "%s", arm_regnames[reg]); | |
253 | } | |
254 | func (stream, "}"); | |
255 | } | |
256 | break; | |
257 | ||
258 | case 'o': | |
259 | if ((given & 0x02000000) != 0) | |
260 | { | |
261 | int rotate = (given & 0xf00) >> 7; | |
262 | int immed = (given & 0xff); | |
263 | func (stream, "#%d", | |
264 | ((immed << (32 - rotate)) | |
265 | | (immed >> rotate)) & 0xffffffff); | |
266 | } | |
267 | else | |
268 | arm_decode_shift (given, func, stream); | |
269 | break; | |
270 | ||
271 | case 'p': | |
272 | if ((given & 0x0000f000) == 0x0000f000) | |
273 | func (stream, "p"); | |
274 | break; | |
275 | ||
276 | case 't': | |
277 | if ((given & 0x01200000) == 0x00200000) | |
278 | func (stream, "t"); | |
279 | break; | |
280 | ||
281 | case 'h': | |
282 | if ((given & 0x00000020) == 0x00000020) | |
283 | func (stream, "h"); | |
284 | else | |
285 | func (stream, "b"); | |
286 | break; | |
287 | ||
288 | case 'A': | |
289 | func (stream, "[%s", arm_regnames [(given >> 16) & 0xf]); | |
290 | if ((given & 0x01000000) != 0) | |
291 | { | |
292 | int offset = given & 0xff; | |
293 | if (offset) | |
294 | func (stream, ", %s#%d]%s", | |
295 | ((given & 0x00800000) == 0 ? "-" : ""), | |
296 | offset * 4, | |
297 | ((given & 0x00200000) != 0 ? "!" : "")); | |
298 | else | |
299 | func (stream, "]"); | |
300 | } | |
301 | else | |
302 | { | |
303 | int offset = given & 0xff; | |
304 | if (offset) | |
305 | func (stream, "], %s#%d", | |
306 | ((given & 0x00800000) == 0 ? "-" : ""), | |
307 | offset * 4); | |
308 | else | |
309 | func (stream, "]"); | |
310 | } | |
311 | break; | |
312 | ||
313 | case 'C': | |
314 | switch (given & 0x00090000) | |
315 | { | |
0ff7faaf | 316 | default: |
c08a4e6b NC |
317 | func (stream, "_???"); |
318 | break; | |
0ff7faaf CM |
319 | case 0x90000: |
320 | func (stream, "_all"); | |
321 | break; | |
c08a4e6b NC |
322 | case 0x10000: |
323 | func (stream, "_ctl"); | |
324 | break; | |
325 | case 0x80000: | |
326 | func (stream, "_flg"); | |
327 | break; | |
328 | } | |
329 | break; | |
330 | ||
331 | case 'F': | |
332 | switch (given & 0x00408000) | |
333 | { | |
334 | case 0: | |
335 | func (stream, "4"); | |
336 | break; | |
337 | case 0x8000: | |
338 | func (stream, "1"); | |
339 | break; | |
340 | case 0x00400000: | |
341 | func (stream, "2"); | |
342 | break; | |
343 | default: | |
344 | func (stream, "3"); | |
345 | } | |
346 | break; | |
347 | ||
348 | case 'P': | |
349 | switch (given & 0x00080080) | |
350 | { | |
351 | case 0: | |
352 | func (stream, "s"); | |
353 | break; | |
354 | case 0x80: | |
355 | func (stream, "d"); | |
356 | break; | |
357 | case 0x00080000: | |
358 | func (stream, "e"); | |
359 | break; | |
360 | default: | |
0ff7faaf | 361 | func (stream, _("<illegal precision>")); |
c08a4e6b NC |
362 | break; |
363 | } | |
364 | break; | |
365 | case 'Q': | |
366 | switch (given & 0x00408000) | |
367 | { | |
368 | case 0: | |
369 | func (stream, "s"); | |
370 | break; | |
371 | case 0x8000: | |
372 | func (stream, "d"); | |
373 | break; | |
374 | case 0x00400000: | |
375 | func (stream, "e"); | |
376 | break; | |
377 | default: | |
378 | func (stream, "p"); | |
379 | break; | |
380 | } | |
381 | break; | |
382 | case 'R': | |
383 | switch (given & 0x60) | |
384 | { | |
385 | case 0: | |
386 | break; | |
387 | case 0x20: | |
388 | func (stream, "p"); | |
389 | break; | |
390 | case 0x40: | |
391 | func (stream, "m"); | |
392 | break; | |
393 | default: | |
394 | func (stream, "z"); | |
395 | break; | |
396 | } | |
397 | break; | |
398 | ||
399 | case '0': case '1': case '2': case '3': case '4': | |
400 | case '5': case '6': case '7': case '8': case '9': | |
401 | { | |
402 | int bitstart = *c++ - '0'; | |
403 | int bitend = 0; | |
404 | while (*c >= '0' && *c <= '9') | |
405 | bitstart = (bitstart * 10) + *c++ - '0'; | |
406 | ||
407 | switch (*c) | |
408 | { | |
409 | case '-': | |
410 | c++; | |
411 | while (*c >= '0' && *c <= '9') | |
412 | bitend = (bitend * 10) + *c++ - '0'; | |
413 | if (!bitend) | |
414 | abort (); | |
415 | switch (*c) | |
416 | { | |
417 | case 'r': | |
418 | { | |
419 | long reg; | |
420 | reg = given >> bitstart; | |
421 | reg &= (2 << (bitend - bitstart)) - 1; | |
422 | func (stream, "%s", arm_regnames[reg]); | |
423 | } | |
424 | break; | |
425 | case 'd': | |
426 | { | |
427 | long reg; | |
428 | reg = given >> bitstart; | |
429 | reg &= (2 << (bitend - bitstart)) - 1; | |
430 | func (stream, "%d", reg); | |
431 | } | |
432 | break; | |
433 | case 'x': | |
434 | { | |
435 | long reg; | |
436 | reg = given >> bitstart; | |
437 | reg &= (2 << (bitend - bitstart)) - 1; | |
438 | func (stream, "0x%08x", reg); | |
439 | } | |
440 | break; | |
441 | case 'f': | |
442 | { | |
443 | long reg; | |
444 | reg = given >> bitstart; | |
445 | reg &= (2 << (bitend - bitstart)) - 1; | |
446 | if (reg > 7) | |
447 | func (stream, "#%s", | |
448 | arm_fp_const[reg & 7]); | |
449 | else | |
450 | func (stream, "f%d", reg); | |
451 | } | |
452 | break; | |
453 | default: | |
454 | abort (); | |
455 | } | |
456 | break; | |
457 | case '`': | |
458 | c++; | |
459 | if ((given & (1 << bitstart)) == 0) | |
460 | func (stream, "%c", *c); | |
461 | break; | |
462 | case '\'': | |
463 | c++; | |
464 | if ((given & (1 << bitstart)) != 0) | |
465 | func (stream, "%c", *c); | |
466 | break; | |
467 | case '?': | |
468 | ++c; | |
469 | if ((given & (1 << bitstart)) != 0) | |
470 | func (stream, "%c", *c++); | |
471 | else | |
472 | func (stream, "%c", *++c); | |
473 | break; | |
474 | default: | |
475 | abort (); | |
476 | } | |
477 | break; | |
478 | ||
479 | default: | |
480 | abort (); | |
481 | } | |
482 | } | |
483 | } | |
484 | else | |
485 | func (stream, "%c", *c); | |
486 | } | |
487 | return 4; | |
488 | } | |
489 | } | |
490 | abort (); | |
491 | } | |
492 | ||
493 | /* Print one instruction from PC on INFO->STREAM. | |
494 | Return the size of the instruction. */ | |
495 | ||
496 | static int | |
497 | print_insn_thumb (pc, info, given) | |
498 | bfd_vma pc; | |
499 | struct disassemble_info *info; | |
500 | long given; | |
501 | { | |
502 | struct thumb_opcode *insn; | |
503 | void *stream = info->stream; | |
504 | fprintf_ftype func = info->fprintf_func; | |
505 | ||
506 | for (insn = thumb_opcodes; insn->assembler; insn++) | |
507 | { | |
508 | if ((given & insn->mask) == insn->value) | |
509 | { | |
510 | char *c = insn->assembler; | |
511 | ||
512 | /* Special processing for Thumb 2 instruction BL sequence: */ | |
513 | if (!*c) /* check for empty (not NULL) assembler string */ | |
514 | { | |
515 | info->bytes_per_chunk = 4; | |
516 | info->bytes_per_line = 4; | |
517 | ||
518 | func (stream, "%04x\tbl\t", given & 0xffff); | |
519 | (*info->print_address_func) | |
520 | (BDISP23 (given) * 2 + pc + 4, info); | |
521 | return 4; | |
522 | } | |
523 | else | |
524 | { | |
525 | info->bytes_per_chunk = 2; | |
526 | info->bytes_per_line = 4; | |
527 | ||
528 | given &= 0xffff; | |
529 | func (stream, "%04x\t", given); | |
530 | for (; *c; c++) | |
531 | { | |
532 | if (*c == '%') | |
533 | { | |
534 | int domaskpc = 0; | |
535 | int domasklr = 0; | |
536 | switch (*++c) | |
537 | { | |
538 | case '%': | |
539 | func (stream, "%%"); | |
540 | break; | |
541 | ||
542 | case 'S': | |
543 | { | |
544 | long reg; | |
545 | reg = (given >> 3) & 0x7; | |
546 | if (given & (1 << 6)) | |
547 | reg += 8; | |
548 | func (stream, "%s", arm_regnames[reg]); | |
549 | } | |
550 | break; | |
551 | ||
552 | case 'D': | |
553 | { | |
554 | long reg; | |
555 | reg = given & 0x7; | |
556 | if (given & (1 << 7)) | |
557 | reg += 8; | |
558 | func (stream, "%s", arm_regnames[reg]); | |
559 | } | |
560 | break; | |
561 | ||
562 | case 'T': | |
563 | func (stream, "%s", | |
564 | arm_conditional [(given >> 8) & 0xf]); | |
565 | break; | |
566 | ||
567 | case 'N': | |
568 | if (given & (1 << 8)) | |
569 | domasklr = 1; | |
570 | /* fall through */ | |
571 | case 'O': | |
572 | if (*c == 'O' && (given & (1 << 8))) | |
573 | domaskpc = 1; | |
574 | /* fall through */ | |
575 | case 'M': | |
576 | { | |
577 | int started = 0; | |
578 | int reg; | |
579 | func (stream, "{"); | |
580 | /* It would be nice if we could spot | |
581 | ranges, and generate the rS-rE format: */ | |
582 | for (reg = 0; (reg < 8); reg++) | |
583 | if ((given & (1 << reg)) != 0) | |
584 | { | |
585 | if (started) | |
586 | func (stream, ", "); | |
587 | started = 1; | |
588 | func (stream, "%s", arm_regnames[reg]); | |
589 | } | |
590 | ||
591 | if (domasklr) | |
592 | { | |
593 | if (started) | |
594 | func (stream, ", "); | |
595 | started = 1; | |
596 | func (stream, "lr"); | |
597 | } | |
598 | ||
599 | if (domaskpc) | |
600 | { | |
601 | if (started) | |
602 | func (stream, ", "); | |
603 | func (stream, "pc"); | |
604 | } | |
605 | ||
606 | func (stream, "}"); | |
607 | } | |
608 | break; | |
609 | ||
610 | ||
611 | case '0': case '1': case '2': case '3': case '4': | |
612 | case '5': case '6': case '7': case '8': case '9': | |
613 | { | |
614 | int bitstart = *c++ - '0'; | |
615 | int bitend = 0; | |
616 | while (*c >= '0' && *c <= '9') | |
617 | bitstart = (bitstart * 10) + *c++ - '0'; | |
618 | ||
619 | switch (*c) | |
620 | { | |
621 | case '-': | |
622 | { | |
623 | long reg; | |
624 | c++; | |
625 | while (*c >= '0' && *c <= '9') | |
626 | bitend = (bitend * 10) + *c++ - '0'; | |
627 | if (!bitend) | |
628 | abort (); | |
629 | reg = given >> bitstart; | |
630 | reg &= (2 << (bitend - bitstart)) - 1; | |
631 | switch (*c) | |
632 | { | |
633 | case 'r': | |
634 | func (stream, "%s", arm_regnames[reg]); | |
635 | break; | |
636 | ||
637 | case 'd': | |
638 | func (stream, "%d", reg); | |
639 | break; | |
640 | ||
641 | case 'H': | |
642 | func (stream, "%d", reg << 1); | |
643 | break; | |
644 | ||
645 | case 'W': | |
646 | func (stream, "%d", reg << 2); | |
647 | break; | |
648 | ||
649 | case 'a': | |
0ff7faaf CM |
650 | /* PC-relative address -- the bottom two |
651 | bits of the address are dropped before | |
652 | the calculation. */ | |
653 | info->print_address_func | |
654 | (((pc + 4) & ~3) + (reg << 2), info); | |
c08a4e6b NC |
655 | break; |
656 | ||
657 | case 'x': | |
658 | func (stream, "0x%04x", reg); | |
659 | break; | |
660 | ||
661 | case 'I': | |
662 | reg = ((reg ^ (1 << bitend)) - (1 << bitend)); | |
663 | func (stream, "%d", reg); | |
664 | break; | |
665 | ||
666 | case 'B': | |
667 | reg = ((reg ^ (1 << bitend)) - (1 << bitend)); | |
668 | (*info->print_address_func) | |
669 | (reg * 2 + pc + 4, info); | |
670 | break; | |
671 | ||
672 | default: | |
673 | abort(); | |
674 | } | |
675 | } | |
676 | break; | |
677 | ||
678 | case '\'': | |
679 | c++; | |
680 | if ((given & (1 << bitstart)) != 0) | |
681 | func (stream, "%c", *c); | |
682 | break; | |
683 | ||
684 | case '?': | |
685 | ++c; | |
686 | if ((given & (1 << bitstart)) != 0) | |
687 | func (stream, "%c", *c++); | |
688 | else | |
689 | func (stream, "%c", *++c); | |
690 | break; | |
691 | ||
692 | default: | |
693 | abort(); | |
694 | } | |
695 | } | |
696 | break; | |
697 | ||
698 | default: | |
699 | abort (); | |
700 | } | |
701 | } | |
702 | else | |
703 | func (stream, "%c", *c); | |
704 | } | |
705 | } | |
706 | return 2; | |
707 | } | |
708 | } | |
709 | ||
710 | /* no match */ | |
711 | abort (); | |
712 | } | |
713 | ||
714 | /* NOTE: There are no checks in these routines that the relevant number of data bytes exist */ | |
715 | ||
716 | int | |
717 | print_insn_big_arm (pc, info) | |
718 | bfd_vma pc; | |
719 | struct disassemble_info *info; | |
720 | { | |
0c4f6dc2 NC |
721 | unsigned char b[4]; |
722 | long given; | |
723 | int status; | |
0ff7faaf | 724 | coff_symbol_type *cs; |
0ff7faaf | 725 | elf_symbol_type *es; |
0c4f6dc2 NC |
726 | int is_thumb; |
727 | ||
0ff7faaf CM |
728 | is_thumb = false; |
729 | if (info->symbols != NULL) | |
730 | { | |
731 | if (bfd_asymbol_flavour (*info->symbols) == bfd_target_coff_flavour) | |
732 | { | |
0c6c0bbe CM |
733 | cs = coffsymbol (*info->symbols); |
734 | is_thumb = (cs->native->u.syment.n_sclass == C_THUMBEXT | |
735 | || cs->native->u.syment.n_sclass == C_THUMBSTAT | |
736 | || cs->native->u.syment.n_sclass == C_THUMBLABEL | |
737 | || cs->native->u.syment.n_sclass == C_THUMBEXTFUNC | |
738 | || cs->native->u.syment.n_sclass == C_THUMBSTATFUNC); | |
0ff7faaf CM |
739 | |
740 | } | |
0ff7faaf CM |
741 | else if (bfd_asymbol_flavour (*info->symbols) == bfd_target_elf_flavour) |
742 | { | |
0c6c0bbe | 743 | es = *(elf_symbol_type **)(info->symbols); |
49fe8864 NC |
744 | is_thumb = ELF_ST_TYPE (es->internal_elf_sym.st_info) == |
745 | STT_ARM_TFUNC; | |
0ff7faaf | 746 | } |
0ff7faaf | 747 | } |
c08a4e6b NC |
748 | |
749 | info->bytes_per_chunk = 4; | |
750 | info->display_endian = BFD_ENDIAN_BIG; | |
751 | ||
752 | /* Always fetch word aligned values. */ | |
753 | ||
754 | status = (*info->read_memory_func) (pc & ~ 0x3, (bfd_byte *) &b[0], 4, info); | |
755 | if (status != 0) | |
756 | { | |
757 | (*info->memory_error_func) (status, pc, info); | |
758 | return -1; | |
759 | } | |
760 | ||
0c4f6dc2 | 761 | if (is_thumb) |
c08a4e6b NC |
762 | { |
763 | if (pc & 0x2) | |
764 | { | |
765 | given = (b[2] << 8) | b[3]; | |
766 | ||
767 | status = info->read_memory_func ((pc + 4) & ~ 0x3, (bfd_byte *) b, 4, info); | |
768 | if (status != 0) | |
769 | { | |
770 | info->memory_error_func (status, pc + 4, info); | |
771 | return -1; | |
772 | } | |
773 | ||
774 | given |= (b[0] << 24) | (b[1] << 16); | |
775 | } | |
776 | else | |
777 | { | |
778 | given = (b[0] << 8) | b[1] | (b[2] << 24) | (b[3] << 16); | |
779 | } | |
780 | } | |
781 | else | |
782 | { | |
783 | given = (b[0] << 24) | (b[1] << 16) | (b[2] << 8) | (b[3]); | |
784 | } | |
785 | ||
0c4f6dc2 | 786 | if (is_thumb) |
c08a4e6b NC |
787 | { |
788 | status = print_insn_thumb (pc, info, given); | |
c08a4e6b NC |
789 | } |
790 | else | |
791 | { | |
792 | status = print_insn_arm (pc, info, given); | |
c08a4e6b NC |
793 | } |
794 | ||
795 | return status; | |
796 | } | |
797 | ||
798 | int | |
799 | print_insn_little_arm (pc, info) | |
800 | bfd_vma pc; | |
0c4f6dc2 | 801 | struct disassemble_info * info; |
c08a4e6b | 802 | { |
0c4f6dc2 NC |
803 | unsigned char b[4]; |
804 | long given; | |
805 | int status; | |
0ff7faaf | 806 | coff_symbol_type *cs; |
0ff7faaf | 807 | elf_symbol_type *es; |
0c4f6dc2 | 808 | int is_thumb; |
0ff7faaf CM |
809 | |
810 | is_thumb = false; | |
811 | if (info->symbols != NULL) | |
812 | { | |
813 | if (bfd_asymbol_flavour (*info->symbols) == bfd_target_coff_flavour) | |
814 | { | |
0c6c0bbe CM |
815 | cs = coffsymbol (*info->symbols); |
816 | is_thumb = (cs->native->u.syment.n_sclass == C_THUMBEXT | |
817 | || cs->native->u.syment.n_sclass == C_THUMBSTAT | |
818 | || cs->native->u.syment.n_sclass == C_THUMBLABEL | |
819 | || cs->native->u.syment.n_sclass == C_THUMBEXTFUNC | |
820 | || cs->native->u.syment.n_sclass == C_THUMBSTATFUNC); | |
0ff7faaf CM |
821 | |
822 | } | |
0ff7faaf CM |
823 | else if (bfd_asymbol_flavour (*info->symbols) == bfd_target_elf_flavour) |
824 | { | |
0c6c0bbe | 825 | es = *(elf_symbol_type **)(info->symbols); |
49fe8864 NC |
826 | is_thumb = ELF_ST_TYPE (es->internal_elf_sym.st_info) == |
827 | STT_ARM_TFUNC; | |
0ff7faaf | 828 | } |
0ff7faaf | 829 | } |
c08a4e6b NC |
830 | |
831 | info->bytes_per_chunk = 4; | |
832 | info->display_endian = BFD_ENDIAN_LITTLE; | |
833 | ||
834 | status = (*info->read_memory_func) (pc, (bfd_byte *) &b[0], 4, info); | |
0c4f6dc2 | 835 | if (status != 0 && is_thumb) |
c08a4e6b NC |
836 | { |
837 | info->bytes_per_chunk = 2; | |
838 | ||
839 | status = info->read_memory_func (pc, (bfd_byte *) b, 2, info); | |
840 | b[3] = b[2] = 0; | |
841 | } | |
842 | if (status != 0) | |
843 | { | |
844 | (*info->memory_error_func) (status, pc, info); | |
845 | return -1; | |
846 | } | |
847 | ||
848 | given = (b[0]) | (b[1] << 8) | (b[2] << 16) | (b[3] << 24); | |
849 | ||
0c4f6dc2 | 850 | if (is_thumb) |
c08a4e6b NC |
851 | { |
852 | status = print_insn_thumb (pc, info, given); | |
c08a4e6b NC |
853 | } |
854 | else | |
855 | { | |
856 | status = print_insn_arm (pc, info, given); | |
c08a4e6b NC |
857 | } |
858 | ||
859 | return status; | |
860 | } |