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 | ||
29 | /* start-sanitize-armelf */ | |
30 | /* FIXME: This shouldn't be done here */ | |
31 | #include "elf-bfd.h" | |
32 | #include "elf/internal.h" | |
33 | /* end-sanitize-armelf */ | |
c08a4e6b NC |
34 | |
35 | static char *arm_conditional[] = | |
36 | {"eq", "ne", "cs", "cc", "mi", "pl", "vs", "vc", | |
37 | "hi", "ls", "ge", "lt", "gt", "le", "", "nv"}; | |
38 | ||
39 | static char *arm_regnames[] = | |
40 | {"r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", | |
41 | "r8", "r9", "sl", "fp", "ip", "sp", "lr", "pc"}; | |
42 | ||
43 | static char *arm_fp_const[] = | |
44 | {"0.0", "1.0", "2.0", "3.0", "4.0", "5.0", "0.5", "10.0"}; | |
45 | ||
46 | static char *arm_shift[] = | |
47 | {"lsl", "lsr", "asr", "ror"}; | |
48 | ||
49 | static int print_insn_arm PARAMS ((bfd_vma, struct disassemble_info *, | |
50 | long)); | |
51 | ||
52 | static void | |
53 | arm_decode_shift (given, func, stream) | |
54 | long given; | |
55 | fprintf_ftype func; | |
56 | void *stream; | |
57 | { | |
58 | func (stream, "%s", arm_regnames[given & 0xf]); | |
59 | if ((given & 0xff0) != 0) | |
60 | { | |
61 | if ((given & 0x10) == 0) | |
62 | { | |
63 | int amount = (given & 0xf80) >> 7; | |
64 | int shift = (given & 0x60) >> 5; | |
65 | if (amount == 0) | |
66 | { | |
67 | if (shift == 3) | |
68 | { | |
69 | func (stream, ", rrx"); | |
70 | return; | |
71 | } | |
72 | amount = 32; | |
73 | } | |
74 | func (stream, ", %s #%d", arm_shift[shift], amount); | |
75 | } | |
76 | else | |
77 | func (stream, ", %s %s", arm_shift[(given & 0x60) >> 5], | |
78 | arm_regnames[(given & 0xf00) >> 8]); | |
79 | } | |
80 | } | |
81 | ||
82 | /* Print one instruction from PC on INFO->STREAM. | |
83 | Return the size of the instruction (always 4 on ARM). */ | |
84 | ||
85 | static int | |
86 | print_insn_arm (pc, info, given) | |
87 | bfd_vma pc; | |
88 | struct disassemble_info *info; | |
89 | long given; | |
90 | { | |
91 | struct arm_opcode *insn; | |
92 | void *stream = info->stream; | |
93 | fprintf_ftype func = info->fprintf_func; | |
94 | ||
95 | for (insn = arm_opcodes; insn->assembler; insn++) | |
96 | { | |
97 | if ((given & insn->mask) == insn->value) | |
98 | { | |
99 | char *c; | |
100 | for (c = insn->assembler; *c; c++) | |
101 | { | |
102 | if (*c == '%') | |
103 | { | |
104 | switch (*++c) | |
105 | { | |
106 | case '%': | |
107 | func (stream, "%%"); | |
108 | break; | |
109 | ||
110 | case 'a': | |
111 | if (((given & 0x000f0000) == 0x000f0000) | |
112 | && ((given & 0x02000000) == 0)) | |
113 | { | |
114 | int offset = given & 0xfff; | |
115 | if ((given & 0x00800000) == 0) | |
116 | offset = -offset; | |
117 | (*info->print_address_func) | |
118 | (offset + pc + 8, info); | |
119 | } | |
120 | else | |
121 | { | |
122 | func (stream, "[%s", | |
123 | arm_regnames[(given >> 16) & 0xf]); | |
124 | if ((given & 0x01000000) != 0) | |
125 | { | |
126 | if ((given & 0x02000000) == 0) | |
127 | { | |
128 | int offset = given & 0xfff; | |
129 | if (offset) | |
130 | func (stream, ", %s#%d", | |
131 | (((given & 0x00800000) == 0) | |
132 | ? "-" : ""), offset); | |
133 | } | |
134 | else | |
135 | { | |
136 | func (stream, ", %s", | |
137 | (((given & 0x00800000) == 0) | |
138 | ? "-" : "")); | |
139 | arm_decode_shift (given, func, stream); | |
140 | } | |
141 | ||
142 | func (stream, "]%s", | |
143 | ((given & 0x00200000) != 0) ? "!" : ""); | |
144 | } | |
145 | else | |
146 | { | |
147 | if ((given & 0x02000000) == 0) | |
148 | { | |
149 | int offset = given & 0xfff; | |
150 | if (offset) | |
151 | func (stream, "], %s#%d", | |
152 | (((given & 0x00800000) == 0) | |
153 | ? "-" : ""), offset); | |
154 | else | |
155 | func (stream, "]"); | |
156 | } | |
157 | else | |
158 | { | |
159 | func (stream, "], %s", | |
160 | (((given & 0x00800000) == 0) | |
161 | ? "-" : "")); | |
162 | arm_decode_shift (given, func, stream); | |
163 | } | |
164 | } | |
165 | } | |
166 | break; | |
167 | ||
168 | case 's': | |
169 | if ((given & 0x004f0000) == 0x004f0000) | |
170 | { | |
171 | /* PC relative with immediate offset */ | |
172 | int offset = ((given & 0xf00) >> 4) | (given & 0xf); | |
173 | if ((given & 0x00800000) == 0) | |
174 | offset = -offset; | |
175 | (*info->print_address_func) | |
176 | (offset + pc + 8, info); | |
177 | } | |
178 | else | |
179 | { | |
180 | func (stream, "[%s", | |
181 | arm_regnames[(given >> 16) & 0xf]); | |
182 | if ((given & 0x01000000) != 0) | |
183 | { | |
184 | /* pre-indexed */ | |
185 | if ((given & 0x00400000) == 0x00400000) | |
186 | { | |
187 | /* immediate */ | |
188 | int offset = ((given & 0xf00) >> 4) | (given & 0xf); | |
189 | if (offset) | |
190 | func (stream, ", %s#%d", | |
191 | (((given & 0x00800000) == 0) | |
192 | ? "-" : ""), offset); | |
193 | } | |
194 | else | |
195 | { | |
196 | /* register */ | |
197 | func (stream, ", %s%s", | |
198 | (((given & 0x00800000) == 0) | |
199 | ? "-" : ""), | |
200 | arm_regnames[given & 0xf]); | |
201 | } | |
202 | ||
203 | func (stream, "]%s", | |
204 | ((given & 0x00200000) != 0) ? "!" : ""); | |
205 | } | |
206 | else | |
207 | { | |
208 | /* post-indexed */ | |
209 | if ((given & 0x00400000) == 0x00400000) | |
210 | { | |
211 | /* immediate */ | |
212 | int offset = ((given & 0xf00) >> 4) | (given & 0xf); | |
213 | if (offset) | |
214 | func (stream, "], %s#%d", | |
215 | (((given & 0x00800000) == 0) | |
216 | ? "-" : ""), offset); | |
217 | else | |
218 | func (stream, "]"); | |
219 | } | |
220 | else | |
221 | { | |
222 | /* register */ | |
223 | func (stream, "], %s%s", | |
224 | (((given & 0x00800000) == 0) | |
225 | ? "-" : ""), | |
226 | arm_regnames[given & 0xf]); | |
227 | } | |
228 | } | |
229 | } | |
230 | break; | |
231 | ||
232 | case 'b': | |
233 | (*info->print_address_func) | |
234 | (BDISP (given) * 4 + pc + 8, info); | |
235 | break; | |
236 | ||
237 | case 'c': | |
238 | func (stream, "%s", | |
239 | arm_conditional [(given >> 28) & 0xf]); | |
240 | break; | |
241 | ||
242 | case 'm': | |
243 | { | |
244 | int started = 0; | |
245 | int reg; | |
246 | ||
247 | func (stream, "{"); | |
248 | for (reg = 0; reg < 16; reg++) | |
249 | if ((given & (1 << reg)) != 0) | |
250 | { | |
251 | if (started) | |
252 | func (stream, ", "); | |
253 | started = 1; | |
254 | func (stream, "%s", arm_regnames[reg]); | |
255 | } | |
256 | func (stream, "}"); | |
257 | } | |
258 | break; | |
259 | ||
260 | case 'o': | |
261 | if ((given & 0x02000000) != 0) | |
262 | { | |
263 | int rotate = (given & 0xf00) >> 7; | |
264 | int immed = (given & 0xff); | |
265 | func (stream, "#%d", | |
266 | ((immed << (32 - rotate)) | |
267 | | (immed >> rotate)) & 0xffffffff); | |
268 | } | |
269 | else | |
270 | arm_decode_shift (given, func, stream); | |
271 | break; | |
272 | ||
273 | case 'p': | |
274 | if ((given & 0x0000f000) == 0x0000f000) | |
275 | func (stream, "p"); | |
276 | break; | |
277 | ||
278 | case 't': | |
279 | if ((given & 0x01200000) == 0x00200000) | |
280 | func (stream, "t"); | |
281 | break; | |
282 | ||
283 | case 'h': | |
284 | if ((given & 0x00000020) == 0x00000020) | |
285 | func (stream, "h"); | |
286 | else | |
287 | func (stream, "b"); | |
288 | break; | |
289 | ||
290 | case 'A': | |
291 | func (stream, "[%s", arm_regnames [(given >> 16) & 0xf]); | |
292 | if ((given & 0x01000000) != 0) | |
293 | { | |
294 | int offset = given & 0xff; | |
295 | if (offset) | |
296 | func (stream, ", %s#%d]%s", | |
297 | ((given & 0x00800000) == 0 ? "-" : ""), | |
298 | offset * 4, | |
299 | ((given & 0x00200000) != 0 ? "!" : "")); | |
300 | else | |
301 | func (stream, "]"); | |
302 | } | |
303 | else | |
304 | { | |
305 | int offset = given & 0xff; | |
306 | if (offset) | |
307 | func (stream, "], %s#%d", | |
308 | ((given & 0x00800000) == 0 ? "-" : ""), | |
309 | offset * 4); | |
310 | else | |
311 | func (stream, "]"); | |
312 | } | |
313 | break; | |
314 | ||
315 | case 'C': | |
316 | switch (given & 0x00090000) | |
317 | { | |
0ff7faaf | 318 | default: |
c08a4e6b NC |
319 | func (stream, "_???"); |
320 | break; | |
0ff7faaf CM |
321 | case 0x90000: |
322 | func (stream, "_all"); | |
323 | break; | |
c08a4e6b NC |
324 | case 0x10000: |
325 | func (stream, "_ctl"); | |
326 | break; | |
327 | case 0x80000: | |
328 | func (stream, "_flg"); | |
329 | break; | |
330 | } | |
331 | break; | |
332 | ||
333 | case 'F': | |
334 | switch (given & 0x00408000) | |
335 | { | |
336 | case 0: | |
337 | func (stream, "4"); | |
338 | break; | |
339 | case 0x8000: | |
340 | func (stream, "1"); | |
341 | break; | |
342 | case 0x00400000: | |
343 | func (stream, "2"); | |
344 | break; | |
345 | default: | |
346 | func (stream, "3"); | |
347 | } | |
348 | break; | |
349 | ||
350 | case 'P': | |
351 | switch (given & 0x00080080) | |
352 | { | |
353 | case 0: | |
354 | func (stream, "s"); | |
355 | break; | |
356 | case 0x80: | |
357 | func (stream, "d"); | |
358 | break; | |
359 | case 0x00080000: | |
360 | func (stream, "e"); | |
361 | break; | |
362 | default: | |
0ff7faaf | 363 | func (stream, _("<illegal precision>")); |
c08a4e6b NC |
364 | break; |
365 | } | |
366 | break; | |
367 | case 'Q': | |
368 | switch (given & 0x00408000) | |
369 | { | |
370 | case 0: | |
371 | func (stream, "s"); | |
372 | break; | |
373 | case 0x8000: | |
374 | func (stream, "d"); | |
375 | break; | |
376 | case 0x00400000: | |
377 | func (stream, "e"); | |
378 | break; | |
379 | default: | |
380 | func (stream, "p"); | |
381 | break; | |
382 | } | |
383 | break; | |
384 | case 'R': | |
385 | switch (given & 0x60) | |
386 | { | |
387 | case 0: | |
388 | break; | |
389 | case 0x20: | |
390 | func (stream, "p"); | |
391 | break; | |
392 | case 0x40: | |
393 | func (stream, "m"); | |
394 | break; | |
395 | default: | |
396 | func (stream, "z"); | |
397 | break; | |
398 | } | |
399 | break; | |
400 | ||
401 | case '0': case '1': case '2': case '3': case '4': | |
402 | case '5': case '6': case '7': case '8': case '9': | |
403 | { | |
404 | int bitstart = *c++ - '0'; | |
405 | int bitend = 0; | |
406 | while (*c >= '0' && *c <= '9') | |
407 | bitstart = (bitstart * 10) + *c++ - '0'; | |
408 | ||
409 | switch (*c) | |
410 | { | |
411 | case '-': | |
412 | c++; | |
413 | while (*c >= '0' && *c <= '9') | |
414 | bitend = (bitend * 10) + *c++ - '0'; | |
415 | if (!bitend) | |
416 | abort (); | |
417 | switch (*c) | |
418 | { | |
419 | case 'r': | |
420 | { | |
421 | long reg; | |
422 | reg = given >> bitstart; | |
423 | reg &= (2 << (bitend - bitstart)) - 1; | |
424 | func (stream, "%s", arm_regnames[reg]); | |
425 | } | |
426 | break; | |
427 | case 'd': | |
428 | { | |
429 | long reg; | |
430 | reg = given >> bitstart; | |
431 | reg &= (2 << (bitend - bitstart)) - 1; | |
432 | func (stream, "%d", reg); | |
433 | } | |
434 | break; | |
435 | case 'x': | |
436 | { | |
437 | long reg; | |
438 | reg = given >> bitstart; | |
439 | reg &= (2 << (bitend - bitstart)) - 1; | |
440 | func (stream, "0x%08x", reg); | |
441 | } | |
442 | break; | |
443 | case 'f': | |
444 | { | |
445 | long reg; | |
446 | reg = given >> bitstart; | |
447 | reg &= (2 << (bitend - bitstart)) - 1; | |
448 | if (reg > 7) | |
449 | func (stream, "#%s", | |
450 | arm_fp_const[reg & 7]); | |
451 | else | |
452 | func (stream, "f%d", reg); | |
453 | } | |
454 | break; | |
455 | default: | |
456 | abort (); | |
457 | } | |
458 | break; | |
459 | case '`': | |
460 | c++; | |
461 | if ((given & (1 << bitstart)) == 0) | |
462 | func (stream, "%c", *c); | |
463 | break; | |
464 | case '\'': | |
465 | c++; | |
466 | if ((given & (1 << bitstart)) != 0) | |
467 | func (stream, "%c", *c); | |
468 | break; | |
469 | case '?': | |
470 | ++c; | |
471 | if ((given & (1 << bitstart)) != 0) | |
472 | func (stream, "%c", *c++); | |
473 | else | |
474 | func (stream, "%c", *++c); | |
475 | break; | |
476 | default: | |
477 | abort (); | |
478 | } | |
479 | break; | |
480 | ||
481 | default: | |
482 | abort (); | |
483 | } | |
484 | } | |
485 | } | |
486 | else | |
487 | func (stream, "%c", *c); | |
488 | } | |
489 | return 4; | |
490 | } | |
491 | } | |
492 | abort (); | |
493 | } | |
494 | ||
495 | /* Print one instruction from PC on INFO->STREAM. | |
496 | Return the size of the instruction. */ | |
497 | ||
498 | static int | |
499 | print_insn_thumb (pc, info, given) | |
500 | bfd_vma pc; | |
501 | struct disassemble_info *info; | |
502 | long given; | |
503 | { | |
504 | struct thumb_opcode *insn; | |
505 | void *stream = info->stream; | |
506 | fprintf_ftype func = info->fprintf_func; | |
507 | ||
508 | for (insn = thumb_opcodes; insn->assembler; insn++) | |
509 | { | |
510 | if ((given & insn->mask) == insn->value) | |
511 | { | |
512 | char *c = insn->assembler; | |
513 | ||
514 | /* Special processing for Thumb 2 instruction BL sequence: */ | |
515 | if (!*c) /* check for empty (not NULL) assembler string */ | |
516 | { | |
517 | info->bytes_per_chunk = 4; | |
518 | info->bytes_per_line = 4; | |
519 | ||
520 | func (stream, "%04x\tbl\t", given & 0xffff); | |
521 | (*info->print_address_func) | |
522 | (BDISP23 (given) * 2 + pc + 4, info); | |
523 | return 4; | |
524 | } | |
525 | else | |
526 | { | |
527 | info->bytes_per_chunk = 2; | |
528 | info->bytes_per_line = 4; | |
529 | ||
530 | given &= 0xffff; | |
531 | func (stream, "%04x\t", given); | |
532 | for (; *c; c++) | |
533 | { | |
534 | if (*c == '%') | |
535 | { | |
536 | int domaskpc = 0; | |
537 | int domasklr = 0; | |
538 | switch (*++c) | |
539 | { | |
540 | case '%': | |
541 | func (stream, "%%"); | |
542 | break; | |
543 | ||
544 | case 'S': | |
545 | { | |
546 | long reg; | |
547 | reg = (given >> 3) & 0x7; | |
548 | if (given & (1 << 6)) | |
549 | reg += 8; | |
550 | func (stream, "%s", arm_regnames[reg]); | |
551 | } | |
552 | break; | |
553 | ||
554 | case 'D': | |
555 | { | |
556 | long reg; | |
557 | reg = given & 0x7; | |
558 | if (given & (1 << 7)) | |
559 | reg += 8; | |
560 | func (stream, "%s", arm_regnames[reg]); | |
561 | } | |
562 | break; | |
563 | ||
564 | case 'T': | |
565 | func (stream, "%s", | |
566 | arm_conditional [(given >> 8) & 0xf]); | |
567 | break; | |
568 | ||
569 | case 'N': | |
570 | if (given & (1 << 8)) | |
571 | domasklr = 1; | |
572 | /* fall through */ | |
573 | case 'O': | |
574 | if (*c == 'O' && (given & (1 << 8))) | |
575 | domaskpc = 1; | |
576 | /* fall through */ | |
577 | case 'M': | |
578 | { | |
579 | int started = 0; | |
580 | int reg; | |
581 | func (stream, "{"); | |
582 | /* It would be nice if we could spot | |
583 | ranges, and generate the rS-rE format: */ | |
584 | for (reg = 0; (reg < 8); reg++) | |
585 | if ((given & (1 << reg)) != 0) | |
586 | { | |
587 | if (started) | |
588 | func (stream, ", "); | |
589 | started = 1; | |
590 | func (stream, "%s", arm_regnames[reg]); | |
591 | } | |
592 | ||
593 | if (domasklr) | |
594 | { | |
595 | if (started) | |
596 | func (stream, ", "); | |
597 | started = 1; | |
598 | func (stream, "lr"); | |
599 | } | |
600 | ||
601 | if (domaskpc) | |
602 | { | |
603 | if (started) | |
604 | func (stream, ", "); | |
605 | func (stream, "pc"); | |
606 | } | |
607 | ||
608 | func (stream, "}"); | |
609 | } | |
610 | break; | |
611 | ||
612 | ||
613 | case '0': case '1': case '2': case '3': case '4': | |
614 | case '5': case '6': case '7': case '8': case '9': | |
615 | { | |
616 | int bitstart = *c++ - '0'; | |
617 | int bitend = 0; | |
618 | while (*c >= '0' && *c <= '9') | |
619 | bitstart = (bitstart * 10) + *c++ - '0'; | |
620 | ||
621 | switch (*c) | |
622 | { | |
623 | case '-': | |
624 | { | |
625 | long reg; | |
626 | c++; | |
627 | while (*c >= '0' && *c <= '9') | |
628 | bitend = (bitend * 10) + *c++ - '0'; | |
629 | if (!bitend) | |
630 | abort (); | |
631 | reg = given >> bitstart; | |
632 | reg &= (2 << (bitend - bitstart)) - 1; | |
633 | switch (*c) | |
634 | { | |
635 | case 'r': | |
636 | func (stream, "%s", arm_regnames[reg]); | |
637 | break; | |
638 | ||
639 | case 'd': | |
640 | func (stream, "%d", reg); | |
641 | break; | |
642 | ||
643 | case 'H': | |
644 | func (stream, "%d", reg << 1); | |
645 | break; | |
646 | ||
647 | case 'W': | |
648 | func (stream, "%d", reg << 2); | |
649 | break; | |
650 | ||
651 | case 'a': | |
0ff7faaf CM |
652 | /* PC-relative address -- the bottom two |
653 | bits of the address are dropped before | |
654 | the calculation. */ | |
655 | info->print_address_func | |
656 | (((pc + 4) & ~3) + (reg << 2), info); | |
c08a4e6b NC |
657 | break; |
658 | ||
659 | case 'x': | |
660 | func (stream, "0x%04x", reg); | |
661 | break; | |
662 | ||
663 | case 'I': | |
664 | reg = ((reg ^ (1 << bitend)) - (1 << bitend)); | |
665 | func (stream, "%d", reg); | |
666 | break; | |
667 | ||
668 | case 'B': | |
669 | reg = ((reg ^ (1 << bitend)) - (1 << bitend)); | |
670 | (*info->print_address_func) | |
671 | (reg * 2 + pc + 4, info); | |
672 | break; | |
673 | ||
674 | default: | |
675 | abort(); | |
676 | } | |
677 | } | |
678 | break; | |
679 | ||
680 | case '\'': | |
681 | c++; | |
682 | if ((given & (1 << bitstart)) != 0) | |
683 | func (stream, "%c", *c); | |
684 | break; | |
685 | ||
686 | case '?': | |
687 | ++c; | |
688 | if ((given & (1 << bitstart)) != 0) | |
689 | func (stream, "%c", *c++); | |
690 | else | |
691 | func (stream, "%c", *++c); | |
692 | break; | |
693 | ||
694 | default: | |
695 | abort(); | |
696 | } | |
697 | } | |
698 | break; | |
699 | ||
700 | default: | |
701 | abort (); | |
702 | } | |
703 | } | |
704 | else | |
705 | func (stream, "%c", *c); | |
706 | } | |
707 | } | |
708 | return 2; | |
709 | } | |
710 | } | |
711 | ||
712 | /* no match */ | |
713 | abort (); | |
714 | } | |
715 | ||
716 | /* NOTE: There are no checks in these routines that the relevant number of data bytes exist */ | |
717 | ||
718 | int | |
719 | print_insn_big_arm (pc, info) | |
720 | bfd_vma pc; | |
721 | struct disassemble_info *info; | |
722 | { | |
0c4f6dc2 NC |
723 | unsigned char b[4]; |
724 | long given; | |
725 | int status; | |
0ff7faaf CM |
726 | coff_symbol_type *cs; |
727 | /* start-sanitize-armelf */ | |
728 | elf_symbol_type *es; | |
729 | /* end-sanitize-armelf */ | |
0c4f6dc2 NC |
730 | int is_thumb; |
731 | ||
0ff7faaf CM |
732 | is_thumb = false; |
733 | if (info->symbols != NULL) | |
734 | { | |
735 | if (bfd_asymbol_flavour (*info->symbols) == bfd_target_coff_flavour) | |
736 | { | |
737 | cs = coffsymbol (*info->symbols); | |
738 | is_thumb = (cs->native->u.syment.n_sclass == C_THUMBEXT | |
739 | || cs->native->u.syment.n_sclass == C_THUMBSTAT | |
740 | || cs->native->u.syment.n_sclass == C_THUMBLABEL | |
741 | || cs->native->u.syment.n_sclass == C_THUMBEXTFUNC | |
742 | || cs->native->u.syment.n_sclass == C_THUMBSTATFUNC); | |
743 | ||
744 | } | |
745 | /* start-sanitize-armelf */ | |
746 | else if (bfd_asymbol_flavour (*info->symbols) == bfd_target_elf_flavour) | |
747 | { | |
748 | es = *(elf_symbol_type **)(info->symbols); | |
749 | is_thumb = (es->internal_elf_sym.st_other == C_THUMBEXT | |
750 | || es->internal_elf_sym.st_other == C_THUMBSTAT | |
751 | || es->internal_elf_sym.st_other == C_THUMBLABEL | |
752 | || es->internal_elf_sym.st_other == C_THUMBEXTFUNC | |
753 | || es->internal_elf_sym.st_other == C_THUMBSTATFUNC); | |
754 | } | |
755 | /* end-sanitize-armelf */ | |
756 | } | |
c08a4e6b NC |
757 | |
758 | info->bytes_per_chunk = 4; | |
759 | info->display_endian = BFD_ENDIAN_BIG; | |
760 | ||
761 | /* Always fetch word aligned values. */ | |
762 | ||
763 | status = (*info->read_memory_func) (pc & ~ 0x3, (bfd_byte *) &b[0], 4, info); | |
764 | if (status != 0) | |
765 | { | |
766 | (*info->memory_error_func) (status, pc, info); | |
767 | return -1; | |
768 | } | |
769 | ||
0c4f6dc2 | 770 | if (is_thumb) |
c08a4e6b NC |
771 | { |
772 | if (pc & 0x2) | |
773 | { | |
774 | given = (b[2] << 8) | b[3]; | |
775 | ||
776 | status = info->read_memory_func ((pc + 4) & ~ 0x3, (bfd_byte *) b, 4, info); | |
777 | if (status != 0) | |
778 | { | |
779 | info->memory_error_func (status, pc + 4, info); | |
780 | return -1; | |
781 | } | |
782 | ||
783 | given |= (b[0] << 24) | (b[1] << 16); | |
784 | } | |
785 | else | |
786 | { | |
787 | given = (b[0] << 8) | b[1] | (b[2] << 24) | (b[3] << 16); | |
788 | } | |
789 | } | |
790 | else | |
791 | { | |
792 | given = (b[0] << 24) | (b[1] << 16) | (b[2] << 8) | (b[3]); | |
793 | } | |
794 | ||
0c4f6dc2 | 795 | if (is_thumb) |
c08a4e6b NC |
796 | { |
797 | status = print_insn_thumb (pc, info, given); | |
c08a4e6b NC |
798 | } |
799 | else | |
800 | { | |
801 | status = print_insn_arm (pc, info, given); | |
c08a4e6b NC |
802 | } |
803 | ||
804 | return status; | |
805 | } | |
806 | ||
807 | int | |
808 | print_insn_little_arm (pc, info) | |
809 | bfd_vma pc; | |
0c4f6dc2 | 810 | struct disassemble_info * info; |
c08a4e6b | 811 | { |
0c4f6dc2 NC |
812 | unsigned char b[4]; |
813 | long given; | |
814 | int status; | |
0ff7faaf CM |
815 | coff_symbol_type *cs; |
816 | /* start-sanitize-armelf */ | |
817 | elf_symbol_type *es; | |
818 | /* end-sanitize-armelf */ | |
0c4f6dc2 | 819 | int is_thumb; |
0ff7faaf CM |
820 | |
821 | is_thumb = false; | |
822 | if (info->symbols != NULL) | |
823 | { | |
824 | if (bfd_asymbol_flavour (*info->symbols) == bfd_target_coff_flavour) | |
825 | { | |
826 | cs = coffsymbol (*info->symbols); | |
827 | is_thumb = (cs->native->u.syment.n_sclass == C_THUMBEXT | |
828 | || cs->native->u.syment.n_sclass == C_THUMBSTAT | |
829 | || cs->native->u.syment.n_sclass == C_THUMBLABEL | |
830 | || cs->native->u.syment.n_sclass == C_THUMBEXTFUNC | |
831 | || cs->native->u.syment.n_sclass == C_THUMBSTATFUNC); | |
832 | ||
833 | } | |
834 | /* start-sanitize-armelf */ | |
835 | else if (bfd_asymbol_flavour (*info->symbols) == bfd_target_elf_flavour) | |
836 | { | |
837 | es = *(elf_symbol_type **)(info->symbols); | |
838 | is_thumb = (es->internal_elf_sym.st_other == C_THUMBEXT | |
839 | || es->internal_elf_sym.st_other == C_THUMBSTAT | |
840 | || es->internal_elf_sym.st_other == C_THUMBLABEL | |
841 | || es->internal_elf_sym.st_other == C_THUMBEXTFUNC | |
842 | || es->internal_elf_sym.st_other == C_THUMBSTATFUNC); | |
843 | } | |
844 | /* end-sanitize-armelf */ | |
845 | } | |
0c4f6dc2 | 846 | |
c08a4e6b NC |
847 | |
848 | info->bytes_per_chunk = 4; | |
849 | info->display_endian = BFD_ENDIAN_LITTLE; | |
850 | ||
851 | status = (*info->read_memory_func) (pc, (bfd_byte *) &b[0], 4, info); | |
0c4f6dc2 | 852 | if (status != 0 && is_thumb) |
c08a4e6b NC |
853 | { |
854 | info->bytes_per_chunk = 2; | |
855 | ||
856 | status = info->read_memory_func (pc, (bfd_byte *) b, 2, info); | |
857 | b[3] = b[2] = 0; | |
858 | } | |
859 | if (status != 0) | |
860 | { | |
861 | (*info->memory_error_func) (status, pc, info); | |
862 | return -1; | |
863 | } | |
864 | ||
865 | given = (b[0]) | (b[1] << 8) | (b[2] << 16) | (b[3] << 24); | |
866 | ||
0c4f6dc2 | 867 | if (is_thumb) |
c08a4e6b NC |
868 | { |
869 | status = print_insn_thumb (pc, info, given); | |
c08a4e6b NC |
870 | } |
871 | else | |
872 | { | |
873 | status = print_insn_arm (pc, info, given); | |
c08a4e6b NC |
874 | } |
875 | ||
876 | return status; | |
877 | } |