Commit | Line | Data |
---|---|---|
252b5132 | 1 | /* Instruction printing code for the ARM |
e16bb312 | 2 | Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003 |
060d22b0 | 3 | Free Software Foundation, Inc. |
252b5132 RH |
4 | Contributed by Richard Earnshaw (rwe@pegasus.esprit.ec.org) |
5 | Modification by James G. Smith (jsmith@cygnus.co.uk) | |
6 | ||
e16bb312 | 7 | This file is part of libopcodes. |
252b5132 | 8 | |
e16bb312 NC |
9 | This program is free software; you can redistribute it and/or modify it under |
10 | the terms of the GNU General Public License as published by the Free | |
11 | Software Foundation; either version 2 of the License, or (at your option) | |
12 | any later version. | |
252b5132 | 13 | |
e16bb312 NC |
14 | This program is distributed in the hope that it will be useful, but WITHOUT |
15 | ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
16 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
17 | more details. | |
252b5132 | 18 | |
e16bb312 NC |
19 | You should have received a copy of the GNU General Public License |
20 | along with this program; if not, write to the Free Software | |
21 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ | |
252b5132 | 22 | |
cb6a5892 | 23 | #include "sysdep.h" |
252b5132 RH |
24 | #include "dis-asm.h" |
25 | #define DEFINE_TABLE | |
26 | #include "arm-opc.h" | |
27 | #include "coff/internal.h" | |
28 | #include "libcoff.h" | |
29 | #include "opintl.h" | |
31e0f3cd | 30 | #include "safe-ctype.h" |
252b5132 | 31 | |
baf0cc5e | 32 | /* FIXME: This shouldn't be done here. */ |
252b5132 RH |
33 | #include "elf-bfd.h" |
34 | #include "elf/internal.h" | |
35 | #include "elf/arm.h" | |
36 | ||
01c7f630 | 37 | #ifndef streq |
58efb6c0 | 38 | #define streq(a,b) (strcmp ((a), (b)) == 0) |
01c7f630 | 39 | #endif |
58efb6c0 | 40 | |
01c7f630 | 41 | #ifndef strneq |
58efb6c0 NC |
42 | #define strneq(a,b,n) (strncmp ((a), (b), (n)) == 0) |
43 | #endif | |
44 | ||
45 | #ifndef NUM_ELEM | |
46 | #define NUM_ELEM(a) (sizeof (a) / sizeof (a)[0]) | |
01c7f630 NC |
47 | #endif |
48 | ||
5876e06d | 49 | static char * arm_conditional[] = |
252b5132 RH |
50 | {"eq", "ne", "cs", "cc", "mi", "pl", "vs", "vc", |
51 | "hi", "ls", "ge", "lt", "gt", "le", "", "nv"}; | |
52 | ||
58efb6c0 NC |
53 | typedef struct |
54 | { | |
55 | const char * name; | |
56 | const char * description; | |
57 | const char * reg_names[16]; | |
58 | } | |
59 | arm_regname; | |
dd92f639 | 60 | |
58efb6c0 NC |
61 | static arm_regname regnames[] = |
62 | { | |
63 | { "raw" , "Select raw register names", | |
64 | { "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15"}}, | |
7c03c75e SB |
65 | { "gcc", "Select register names used by GCC", |
66 | { "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", "r8", "r9", "sl", "fp", "ip", "sp", "lr", "pc" }}, | |
58efb6c0 NC |
67 | { "std", "Select register names used in ARM's ISA documentation", |
68 | { "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", "r8", "r9", "r10", "r11", "r12", "sp", "lr", "pc" }}, | |
69 | { "apcs", "Select register names used in the APCS", | |
70 | { "a1", "a2", "a3", "a4", "v1", "v2", "v3", "v4", "v5", "v6", "sl", "fp", "ip", "sp", "lr", "pc" }}, | |
71 | { "atpcs", "Select register names used in the ATPCS", | |
72 | { "a1", "a2", "a3", "a4", "v1", "v2", "v3", "v4", "v5", "v6", "v7", "v8", "IP", "SP", "LR", "PC" }}, | |
a7f8487e | 73 | { "special-atpcs", "Select special register names used in the ATPCS", |
e16bb312 | 74 | { "a1", "a2", "a3", "a4", "v1", "v2", "v3", "WR", "v5", "SB", "SL", "FP", "IP", "SP", "LR", "PC" }}, |
5a6c6817 | 75 | { "iwmmxt_regnames", "Select register names used on the Intel Wireless MMX technology coprocessor", |
e16bb312 | 76 | { "wr0", "wr1", "wr2", "wr3", "wr4", "wr5", "wr6", "wr7", "wr8", "wr9", "wr10", "wr11", "wr12", "wr13", "wr14", "wr15"}}, |
5a6c6817 | 77 | { "iwmmxt_Cregnames", "Select control register names used on the Intel Wireless MMX technology coprocessor", |
e16bb312 NC |
78 | {"wcid", "wcon", "wcssf", "wcasf", "reserved", "reserved", "reserved", "reserved", "wcgr0", "wcgr1", "wcgr2", "wcgr3", "reserved", "reserved", "reserved", "reserved"}} |
79 | }; | |
80 | ||
81 | static char * iwmmxt_wwnames[] = | |
82 | {"b", "h", "w", "d"}; | |
83 | ||
84 | static char * iwmmxt_wwssnames[] = | |
85 | {"b", "bus", "b", "bss", | |
86 | "h", "hus", "h", "hss", | |
87 | "w", "wus", "w", "wss", | |
88 | "d", "dus", "d", "dss" | |
58efb6c0 NC |
89 | }; |
90 | ||
7c03c75e | 91 | /* Default to GCC register name set. */ |
58efb6c0 NC |
92 | static unsigned int regname_selected = 1; |
93 | ||
94 | #define NUM_ARM_REGNAMES NUM_ELEM (regnames) | |
95 | #define arm_regnames regnames[regname_selected].reg_names | |
252b5132 | 96 | |
b34976b6 | 97 | static bfd_boolean force_thumb = FALSE; |
01c7f630 | 98 | |
5876e06d | 99 | static char * arm_fp_const[] = |
252b5132 RH |
100 | {"0.0", "1.0", "2.0", "3.0", "4.0", "5.0", "0.5", "10.0"}; |
101 | ||
b34976b6 | 102 | static char * arm_shift[] = |
252b5132 | 103 | {"lsl", "lsr", "asr", "ror"}; |
01c7f630 NC |
104 | \f |
105 | /* Forward declarations. */ | |
b34976b6 AM |
106 | static void arm_decode_shift |
107 | PARAMS ((long, fprintf_ftype, void *)); | |
108 | static int print_insn_arm | |
109 | PARAMS ((bfd_vma, struct disassemble_info *, long)); | |
110 | static int print_insn_thumb | |
111 | PARAMS ((bfd_vma, struct disassemble_info *, long)); | |
112 | static void parse_disassembler_options | |
113 | PARAMS ((char *)); | |
114 | static int print_insn | |
115 | PARAMS ((bfd_vma, struct disassemble_info *, bfd_boolean)); | |
e16bb312 NC |
116 | static int set_iwmmxt_regnames |
117 | PARAMS ((void)); | |
118 | ||
119 | int get_arm_regname_num_options | |
120 | PARAMS ((void)); | |
121 | int set_arm_regname_option | |
122 | PARAMS ((int)); | |
123 | int get_arm_regnames | |
124 | PARAMS ((int, const char **, const char **, const char ***)); | |
01c7f630 | 125 | \f |
baf0cc5e | 126 | /* Functions. */ |
a7f8487e | 127 | int |
baf0cc5e | 128 | get_arm_regname_num_options () |
a7f8487e FN |
129 | { |
130 | return NUM_ARM_REGNAMES; | |
131 | } | |
132 | ||
133 | int | |
baf0cc5e NC |
134 | set_arm_regname_option (option) |
135 | int option; | |
a7f8487e FN |
136 | { |
137 | int old = regname_selected; | |
138 | regname_selected = option; | |
139 | return old; | |
140 | } | |
141 | ||
142 | int | |
baf0cc5e NC |
143 | get_arm_regnames (option, setname, setdescription, register_names) |
144 | int option; | |
145 | const char **setname; | |
146 | const char **setdescription; | |
147 | const char ***register_names; | |
a7f8487e FN |
148 | { |
149 | *setname = regnames[option].name; | |
150 | *setdescription = regnames[option].description; | |
151 | *register_names = regnames[option].reg_names; | |
152 | return 16; | |
153 | } | |
154 | ||
252b5132 RH |
155 | static void |
156 | arm_decode_shift (given, func, stream) | |
157 | long given; | |
158 | fprintf_ftype func; | |
5876e06d | 159 | void * stream; |
252b5132 RH |
160 | { |
161 | func (stream, "%s", arm_regnames[given & 0xf]); | |
b34976b6 | 162 | |
252b5132 RH |
163 | if ((given & 0xff0) != 0) |
164 | { | |
165 | if ((given & 0x10) == 0) | |
166 | { | |
167 | int amount = (given & 0xf80) >> 7; | |
168 | int shift = (given & 0x60) >> 5; | |
b34976b6 | 169 | |
252b5132 RH |
170 | if (amount == 0) |
171 | { | |
172 | if (shift == 3) | |
173 | { | |
174 | func (stream, ", rrx"); | |
175 | return; | |
176 | } | |
b34976b6 | 177 | |
252b5132 RH |
178 | amount = 32; |
179 | } | |
b34976b6 | 180 | |
252b5132 RH |
181 | func (stream, ", %s #%d", arm_shift[shift], amount); |
182 | } | |
183 | else | |
184 | func (stream, ", %s %s", arm_shift[(given & 0x60) >> 5], | |
185 | arm_regnames[(given & 0xf00) >> 8]); | |
186 | } | |
187 | } | |
188 | ||
e16bb312 NC |
189 | static int |
190 | set_iwmmxt_regnames () | |
191 | { | |
192 | const char * setname; | |
193 | const char * setdesc; | |
194 | const char ** regnames; | |
195 | int iwmmxt_regnames = 0; | |
196 | int num_regnames = get_arm_regname_num_options (); | |
197 | ||
198 | get_arm_regnames (iwmmxt_regnames, &setname, | |
199 | &setdesc, ®names); | |
200 | while ((strcmp ("iwmmxt_regnames", setname)) | |
201 | && (iwmmxt_regnames < num_regnames)) | |
202 | get_arm_regnames (++iwmmxt_regnames, &setname, &setdesc, ®names); | |
203 | ||
204 | return iwmmxt_regnames; | |
205 | } | |
206 | ||
252b5132 RH |
207 | /* Print one instruction from PC on INFO->STREAM. |
208 | Return the size of the instruction (always 4 on ARM). */ | |
baf0cc5e | 209 | |
252b5132 RH |
210 | static int |
211 | print_insn_arm (pc, info, given) | |
6a51a8a8 AM |
212 | bfd_vma pc; |
213 | struct disassemble_info *info; | |
214 | long given; | |
252b5132 | 215 | { |
6a51a8a8 AM |
216 | const struct arm_opcode *insn; |
217 | void *stream = info->stream; | |
218 | fprintf_ftype func = info->fprintf_func; | |
e16bb312 | 219 | static int iwmmxt_regnames = 0; |
252b5132 RH |
220 | |
221 | for (insn = arm_opcodes; insn->assembler; insn++) | |
222 | { | |
e16bb312 NC |
223 | if (insn->value == FIRST_IWMMXT_INSN |
224 | && info->mach != bfd_mach_arm_XScale | |
225 | && info->mach != bfd_mach_arm_iWMMXt) | |
226 | insn = insn + IWMMXT_INSN_COUNT; | |
227 | ||
252b5132 RH |
228 | if ((given & insn->mask) == insn->value) |
229 | { | |
230 | char * c; | |
b34976b6 | 231 | |
252b5132 RH |
232 | for (c = insn->assembler; *c; c++) |
233 | { | |
234 | if (*c == '%') | |
235 | { | |
236 | switch (*++c) | |
237 | { | |
238 | case '%': | |
239 | func (stream, "%%"); | |
240 | break; | |
241 | ||
242 | case 'a': | |
243 | if (((given & 0x000f0000) == 0x000f0000) | |
244 | && ((given & 0x02000000) == 0)) | |
245 | { | |
246 | int offset = given & 0xfff; | |
b34976b6 | 247 | |
252b5132 | 248 | func (stream, "[pc"); |
b34976b6 | 249 | |
252b5132 RH |
250 | if (given & 0x01000000) |
251 | { | |
252 | if ((given & 0x00800000) == 0) | |
253 | offset = - offset; | |
b34976b6 | 254 | |
baf0cc5e | 255 | /* Pre-indexed. */ |
40536497 | 256 | func (stream, ", #%d]", offset); |
252b5132 RH |
257 | |
258 | offset += pc + 8; | |
259 | ||
58efb6c0 NC |
260 | /* Cope with the possibility of write-back |
261 | being used. Probably a very dangerous thing | |
262 | for the programmer to do, but who are we to | |
263 | argue ? */ | |
252b5132 RH |
264 | if (given & 0x00200000) |
265 | func (stream, "!"); | |
266 | } | |
267 | else | |
268 | { | |
58efb6c0 | 269 | /* Post indexed. */ |
40536497 | 270 | func (stream, "], #%d", offset); |
252b5132 | 271 | |
baf0cc5e NC |
272 | /* ie ignore the offset. */ |
273 | offset = pc + 8; | |
252b5132 | 274 | } |
b34976b6 | 275 | |
252b5132 RH |
276 | func (stream, "\t; "); |
277 | info->print_address_func (offset, info); | |
278 | } | |
279 | else | |
280 | { | |
b34976b6 | 281 | func (stream, "[%s", |
252b5132 RH |
282 | arm_regnames[(given >> 16) & 0xf]); |
283 | if ((given & 0x01000000) != 0) | |
284 | { | |
285 | if ((given & 0x02000000) == 0) | |
286 | { | |
287 | int offset = given & 0xfff; | |
288 | if (offset) | |
8e6446ff | 289 | func (stream, ", #%s%d", |
252b5132 RH |
290 | (((given & 0x00800000) == 0) |
291 | ? "-" : ""), offset); | |
292 | } | |
293 | else | |
294 | { | |
295 | func (stream, ", %s", | |
296 | (((given & 0x00800000) == 0) | |
297 | ? "-" : "")); | |
298 | arm_decode_shift (given, func, stream); | |
299 | } | |
300 | ||
b34976b6 | 301 | func (stream, "]%s", |
252b5132 RH |
302 | ((given & 0x00200000) != 0) ? "!" : ""); |
303 | } | |
304 | else | |
305 | { | |
306 | if ((given & 0x02000000) == 0) | |
307 | { | |
308 | int offset = given & 0xfff; | |
309 | if (offset) | |
8e6446ff | 310 | func (stream, "], #%s%d", |
252b5132 RH |
311 | (((given & 0x00800000) == 0) |
312 | ? "-" : ""), offset); | |
b34976b6 | 313 | else |
252b5132 RH |
314 | func (stream, "]"); |
315 | } | |
316 | else | |
317 | { | |
318 | func (stream, "], %s", | |
b34976b6 | 319 | (((given & 0x00800000) == 0) |
252b5132 RH |
320 | ? "-" : "")); |
321 | arm_decode_shift (given, func, stream); | |
322 | } | |
323 | } | |
324 | } | |
325 | break; | |
326 | ||
327 | case 's': | |
328 | if ((given & 0x004f0000) == 0x004f0000) | |
329 | { | |
58efb6c0 | 330 | /* PC relative with immediate offset. */ |
252b5132 | 331 | int offset = ((given & 0xf00) >> 4) | (given & 0xf); |
b34976b6 | 332 | |
252b5132 RH |
333 | if ((given & 0x00800000) == 0) |
334 | offset = -offset; | |
b34976b6 | 335 | |
40536497 | 336 | func (stream, "[pc, #%d]\t; ", offset); |
b34976b6 | 337 | |
252b5132 RH |
338 | (*info->print_address_func) |
339 | (offset + pc + 8, info); | |
340 | } | |
341 | else | |
342 | { | |
b34976b6 | 343 | func (stream, "[%s", |
252b5132 RH |
344 | arm_regnames[(given >> 16) & 0xf]); |
345 | if ((given & 0x01000000) != 0) | |
346 | { | |
58efb6c0 | 347 | /* Pre-indexed. */ |
252b5132 RH |
348 | if ((given & 0x00400000) == 0x00400000) |
349 | { | |
58efb6c0 | 350 | /* Immediate. */ |
252b5132 RH |
351 | int offset = ((given & 0xf00) >> 4) | (given & 0xf); |
352 | if (offset) | |
8e6446ff | 353 | func (stream, ", #%s%d", |
252b5132 RH |
354 | (((given & 0x00800000) == 0) |
355 | ? "-" : ""), offset); | |
356 | } | |
357 | else | |
358 | { | |
58efb6c0 | 359 | /* Register. */ |
252b5132 RH |
360 | func (stream, ", %s%s", |
361 | (((given & 0x00800000) == 0) | |
362 | ? "-" : ""), | |
363 | arm_regnames[given & 0xf]); | |
364 | } | |
365 | ||
b34976b6 | 366 | func (stream, "]%s", |
252b5132 RH |
367 | ((given & 0x00200000) != 0) ? "!" : ""); |
368 | } | |
369 | else | |
370 | { | |
58efb6c0 | 371 | /* Post-indexed. */ |
252b5132 RH |
372 | if ((given & 0x00400000) == 0x00400000) |
373 | { | |
58efb6c0 | 374 | /* Immediate. */ |
252b5132 RH |
375 | int offset = ((given & 0xf00) >> 4) | (given & 0xf); |
376 | if (offset) | |
8e6446ff | 377 | func (stream, "], #%s%d", |
252b5132 RH |
378 | (((given & 0x00800000) == 0) |
379 | ? "-" : ""), offset); | |
b34976b6 | 380 | else |
252b5132 RH |
381 | func (stream, "]"); |
382 | } | |
383 | else | |
384 | { | |
58efb6c0 | 385 | /* Register. */ |
252b5132 RH |
386 | func (stream, "], %s%s", |
387 | (((given & 0x00800000) == 0) | |
388 | ? "-" : ""), | |
389 | arm_regnames[given & 0xf]); | |
390 | } | |
391 | } | |
392 | } | |
393 | break; | |
b34976b6 | 394 | |
252b5132 RH |
395 | case 'b': |
396 | (*info->print_address_func) | |
397 | (BDISP (given) * 4 + pc + 8, info); | |
398 | break; | |
399 | ||
400 | case 'c': | |
401 | func (stream, "%s", | |
402 | arm_conditional [(given >> 28) & 0xf]); | |
403 | break; | |
404 | ||
405 | case 'm': | |
406 | { | |
407 | int started = 0; | |
408 | int reg; | |
409 | ||
410 | func (stream, "{"); | |
411 | for (reg = 0; reg < 16; reg++) | |
412 | if ((given & (1 << reg)) != 0) | |
413 | { | |
414 | if (started) | |
415 | func (stream, ", "); | |
416 | started = 1; | |
417 | func (stream, "%s", arm_regnames[reg]); | |
418 | } | |
419 | func (stream, "}"); | |
420 | } | |
421 | break; | |
422 | ||
423 | case 'o': | |
424 | if ((given & 0x02000000) != 0) | |
425 | { | |
426 | int rotate = (given & 0xf00) >> 7; | |
427 | int immed = (given & 0xff); | |
9f20bbfd NC |
428 | immed = (((immed << (32 - rotate)) |
429 | | (immed >> rotate)) & 0xffffffff); | |
430 | func (stream, "#%d\t; 0x%x", immed, immed); | |
252b5132 RH |
431 | } |
432 | else | |
433 | arm_decode_shift (given, func, stream); | |
434 | break; | |
435 | ||
436 | case 'p': | |
437 | if ((given & 0x0000f000) == 0x0000f000) | |
438 | func (stream, "p"); | |
439 | break; | |
440 | ||
441 | case 't': | |
442 | if ((given & 0x01200000) == 0x00200000) | |
443 | func (stream, "t"); | |
444 | break; | |
445 | ||
252b5132 RH |
446 | case 'A': |
447 | func (stream, "[%s", arm_regnames [(given >> 16) & 0xf]); | |
f02232aa NC |
448 | |
449 | if ((given & (1 << 24)) != 0) | |
252b5132 RH |
450 | { |
451 | int offset = given & 0xff; | |
f02232aa | 452 | |
252b5132 | 453 | if (offset) |
8e6446ff | 454 | func (stream, ", #%s%d]%s", |
252b5132 RH |
455 | ((given & 0x00800000) == 0 ? "-" : ""), |
456 | offset * 4, | |
457 | ((given & 0x00200000) != 0 ? "!" : "")); | |
458 | else | |
459 | func (stream, "]"); | |
460 | } | |
461 | else | |
462 | { | |
463 | int offset = given & 0xff; | |
f02232aa NC |
464 | |
465 | func (stream, "]"); | |
466 | ||
467 | if (given & (1 << 21)) | |
468 | { | |
469 | if (offset) | |
8e6446ff | 470 | func (stream, ", #%s%d", |
f02232aa NC |
471 | ((given & 0x00800000) == 0 ? "-" : ""), |
472 | offset * 4); | |
473 | } | |
252b5132 | 474 | else |
f02232aa | 475 | func (stream, ", {%d}", offset); |
252b5132 RH |
476 | } |
477 | break; | |
478 | ||
077b8428 NC |
479 | case 'B': |
480 | /* Print ARM V5 BLX(1) address: pc+25 bits. */ | |
481 | { | |
482 | bfd_vma address; | |
483 | bfd_vma offset = 0; | |
b34976b6 | 484 | |
077b8428 NC |
485 | if (given & 0x00800000) |
486 | /* Is signed, hi bits should be ones. */ | |
487 | offset = (-1) ^ 0x00ffffff; | |
488 | ||
489 | /* Offset is (SignExtend(offset field)<<2). */ | |
490 | offset += given & 0x00ffffff; | |
491 | offset <<= 2; | |
492 | address = offset + pc + 8; | |
b34976b6 | 493 | |
077b8428 NC |
494 | if (given & 0x01000000) |
495 | /* H bit allows addressing to 2-byte boundaries. */ | |
496 | address += 2; | |
497 | ||
498 | info->print_address_func (address, info); | |
499 | } | |
500 | break; | |
501 | ||
b1ee46c5 AH |
502 | case 'I': |
503 | /* Print a Cirrus/DSP shift immediate. */ | |
504 | /* Immediates are 7bit signed ints with bits 0..3 in | |
505 | bits 0..3 of opcode and bits 4..6 in bits 5..7 | |
506 | of opcode. */ | |
507 | { | |
508 | int imm; | |
509 | ||
510 | imm = (given & 0xf) | ((given & 0xe0) >> 1); | |
511 | ||
512 | /* Is ``imm'' a negative number? */ | |
513 | if (imm & 0x40) | |
514 | imm |= (-1 << 7); | |
515 | ||
516 | func (stream, "%d", imm); | |
517 | } | |
518 | ||
519 | break; | |
520 | ||
252b5132 | 521 | case 'C': |
6eeeb4b4 AO |
522 | func (stream, "_"); |
523 | if (given & 0x80000) | |
524 | func (stream, "f"); | |
525 | if (given & 0x40000) | |
526 | func (stream, "s"); | |
527 | if (given & 0x20000) | |
528 | func (stream, "x"); | |
529 | if (given & 0x10000) | |
530 | func (stream, "c"); | |
252b5132 RH |
531 | break; |
532 | ||
533 | case 'F': | |
534 | switch (given & 0x00408000) | |
535 | { | |
536 | case 0: | |
537 | func (stream, "4"); | |
538 | break; | |
539 | case 0x8000: | |
540 | func (stream, "1"); | |
541 | break; | |
542 | case 0x00400000: | |
543 | func (stream, "2"); | |
544 | break; | |
545 | default: | |
546 | func (stream, "3"); | |
547 | } | |
548 | break; | |
b34976b6 | 549 | |
252b5132 RH |
550 | case 'P': |
551 | switch (given & 0x00080080) | |
552 | { | |
553 | case 0: | |
554 | func (stream, "s"); | |
555 | break; | |
556 | case 0x80: | |
557 | func (stream, "d"); | |
558 | break; | |
559 | case 0x00080000: | |
560 | func (stream, "e"); | |
561 | break; | |
562 | default: | |
563 | func (stream, _("<illegal precision>")); | |
564 | break; | |
565 | } | |
566 | break; | |
567 | case 'Q': | |
568 | switch (given & 0x00408000) | |
569 | { | |
570 | case 0: | |
571 | func (stream, "s"); | |
572 | break; | |
573 | case 0x8000: | |
574 | func (stream, "d"); | |
575 | break; | |
576 | case 0x00400000: | |
577 | func (stream, "e"); | |
578 | break; | |
579 | default: | |
580 | func (stream, "p"); | |
581 | break; | |
582 | } | |
583 | break; | |
584 | case 'R': | |
585 | switch (given & 0x60) | |
586 | { | |
587 | case 0: | |
588 | break; | |
589 | case 0x20: | |
590 | func (stream, "p"); | |
591 | break; | |
592 | case 0x40: | |
593 | func (stream, "m"); | |
594 | break; | |
595 | default: | |
596 | func (stream, "z"); | |
597 | break; | |
598 | } | |
599 | break; | |
600 | ||
b34976b6 | 601 | case '0': case '1': case '2': case '3': case '4': |
252b5132 RH |
602 | case '5': case '6': case '7': case '8': case '9': |
603 | { | |
604 | int bitstart = *c++ - '0'; | |
605 | int bitend = 0; | |
606 | while (*c >= '0' && *c <= '9') | |
607 | bitstart = (bitstart * 10) + *c++ - '0'; | |
608 | ||
609 | switch (*c) | |
610 | { | |
611 | case '-': | |
612 | c++; | |
b34976b6 | 613 | |
252b5132 RH |
614 | while (*c >= '0' && *c <= '9') |
615 | bitend = (bitend * 10) + *c++ - '0'; | |
b34976b6 | 616 | |
252b5132 RH |
617 | if (!bitend) |
618 | abort (); | |
b34976b6 | 619 | |
252b5132 RH |
620 | switch (*c) |
621 | { | |
622 | case 'r': | |
623 | { | |
624 | long reg; | |
b34976b6 | 625 | |
252b5132 RH |
626 | reg = given >> bitstart; |
627 | reg &= (2 << (bitend - bitstart)) - 1; | |
b34976b6 | 628 | |
252b5132 RH |
629 | func (stream, "%s", arm_regnames[reg]); |
630 | } | |
631 | break; | |
632 | case 'd': | |
633 | { | |
634 | long reg; | |
b34976b6 | 635 | |
252b5132 RH |
636 | reg = given >> bitstart; |
637 | reg &= (2 << (bitend - bitstart)) - 1; | |
b34976b6 | 638 | |
252b5132 RH |
639 | func (stream, "%d", reg); |
640 | } | |
641 | break; | |
642 | case 'x': | |
643 | { | |
644 | long reg; | |
b34976b6 | 645 | |
252b5132 RH |
646 | reg = given >> bitstart; |
647 | reg &= (2 << (bitend - bitstart)) - 1; | |
b34976b6 | 648 | |
252b5132 | 649 | func (stream, "0x%08x", reg); |
b34976b6 | 650 | |
58efb6c0 NC |
651 | /* Some SWI instructions have special |
652 | meanings. */ | |
5876e06d NC |
653 | if ((given & 0x0fffffff) == 0x0FF00000) |
654 | func (stream, "\t; IMB"); | |
655 | else if ((given & 0x0fffffff) == 0x0FF00001) | |
656 | func (stream, "\t; IMBRange"); | |
252b5132 RH |
657 | } |
658 | break; | |
cfbd315c DL |
659 | case 'X': |
660 | { | |
661 | long reg; | |
b34976b6 | 662 | |
cfbd315c DL |
663 | reg = given >> bitstart; |
664 | reg &= (2 << (bitend - bitstart)) - 1; | |
b34976b6 | 665 | |
cfbd315c DL |
666 | func (stream, "%01x", reg & 0xf); |
667 | } | |
668 | break; | |
252b5132 RH |
669 | case 'f': |
670 | { | |
671 | long reg; | |
b34976b6 | 672 | |
252b5132 RH |
673 | reg = given >> bitstart; |
674 | reg &= (2 << (bitend - bitstart)) - 1; | |
b34976b6 | 675 | |
252b5132 RH |
676 | if (reg > 7) |
677 | func (stream, "#%s", | |
678 | arm_fp_const[reg & 7]); | |
679 | else | |
680 | func (stream, "f%d", reg); | |
681 | } | |
682 | break; | |
e16bb312 NC |
683 | |
684 | case 'w': | |
685 | { | |
686 | long reg; | |
687 | ||
688 | if (bitstart != bitend) | |
689 | { | |
690 | reg = given >> bitstart; | |
691 | reg &= (2 << (bitend - bitstart)) - 1; | |
692 | if (bitend - bitstart == 1) | |
693 | func (stream, "%s", iwmmxt_wwnames[reg]); | |
694 | else | |
695 | func (stream, "%s", iwmmxt_wwssnames[reg]); | |
696 | } | |
697 | else | |
698 | { | |
699 | reg = (((given >> 8) & 0x1) | | |
700 | ((given >> 22) & 0x1)); | |
701 | func (stream, "%s", iwmmxt_wwnames[reg]); | |
702 | } | |
703 | } | |
704 | break; | |
705 | ||
706 | case 'g': | |
707 | { | |
708 | long reg; | |
709 | int current_regnames; | |
710 | ||
711 | if (! iwmmxt_regnames) | |
712 | iwmmxt_regnames = set_iwmmxt_regnames (); | |
713 | current_regnames = set_arm_regname_option | |
714 | (iwmmxt_regnames); | |
715 | ||
716 | reg = given >> bitstart; | |
717 | reg &= (2 << (bitend - bitstart)) - 1; | |
718 | func (stream, "%s", arm_regnames[reg]); | |
719 | set_arm_regname_option (current_regnames); | |
720 | } | |
721 | break; | |
722 | ||
723 | case 'G': | |
724 | { | |
725 | long reg; | |
726 | int current_regnames; | |
727 | ||
728 | if (! iwmmxt_regnames) | |
729 | iwmmxt_regnames = set_iwmmxt_regnames (); | |
730 | current_regnames = set_arm_regname_option | |
731 | (iwmmxt_regnames + 1); | |
732 | ||
733 | reg = given >> bitstart; | |
734 | reg &= (2 << (bitend - bitstart)) - 1; | |
735 | func (stream, "%s", arm_regnames[reg]); | |
736 | set_arm_regname_option (current_regnames); | |
737 | } | |
738 | break; | |
739 | ||
252b5132 RH |
740 | default: |
741 | abort (); | |
742 | } | |
743 | break; | |
a660f11e RE |
744 | |
745 | case 'y': | |
746 | case 'z': | |
747 | { | |
748 | int single = *c == 'y'; | |
749 | int regno; | |
750 | ||
751 | switch (bitstart) | |
752 | { | |
753 | case 4: /* Sm pair */ | |
754 | func (stream, "{"); | |
755 | /* Fall through. */ | |
756 | case 0: /* Sm, Dm */ | |
757 | regno = given & 0x0000000f; | |
758 | if (single) | |
759 | { | |
760 | regno <<= 1; | |
761 | regno += (given >> 5) & 1; | |
762 | } | |
763 | break; | |
764 | ||
765 | case 1: /* Sd, Dd */ | |
766 | regno = (given >> 12) & 0x0000000f; | |
767 | if (single) | |
768 | { | |
769 | regno <<= 1; | |
770 | regno += (given >> 22) & 1; | |
771 | } | |
772 | break; | |
773 | ||
774 | case 2: /* Sn, Dn */ | |
775 | regno = (given >> 16) & 0x0000000f; | |
776 | if (single) | |
777 | { | |
778 | regno <<= 1; | |
779 | regno += (given >> 7) & 1; | |
780 | } | |
781 | break; | |
782 | ||
783 | case 3: /* List */ | |
784 | func (stream, "{"); | |
785 | regno = (given >> 12) & 0x0000000f; | |
786 | if (single) | |
787 | { | |
788 | regno <<= 1; | |
789 | regno += (given >> 22) & 1; | |
790 | } | |
791 | break; | |
792 | ||
b34976b6 | 793 | |
a660f11e RE |
794 | default: |
795 | abort (); | |
796 | } | |
797 | ||
798 | func (stream, "%c%d", single ? 's' : 'd', regno); | |
799 | ||
800 | if (bitstart == 3) | |
801 | { | |
802 | int count = given & 0xff; | |
803 | ||
804 | if (single == 0) | |
805 | count >>= 1; | |
806 | ||
807 | if (--count) | |
808 | { | |
809 | func (stream, "-%c%d", | |
810 | single ? 's' : 'd', | |
811 | regno + count); | |
812 | } | |
813 | ||
814 | func (stream, "}"); | |
815 | } | |
816 | else if (bitstart == 4) | |
817 | func (stream, ", %c%d}", single ? 's' : 'd', | |
818 | regno + 1); | |
819 | ||
820 | break; | |
821 | } | |
822 | ||
252b5132 RH |
823 | case '`': |
824 | c++; | |
825 | if ((given & (1 << bitstart)) == 0) | |
826 | func (stream, "%c", *c); | |
827 | break; | |
828 | case '\'': | |
829 | c++; | |
830 | if ((given & (1 << bitstart)) != 0) | |
831 | func (stream, "%c", *c); | |
832 | break; | |
833 | case '?': | |
834 | ++c; | |
835 | if ((given & (1 << bitstart)) != 0) | |
836 | func (stream, "%c", *c++); | |
837 | else | |
838 | func (stream, "%c", *++c); | |
839 | break; | |
840 | default: | |
841 | abort (); | |
842 | } | |
843 | break; | |
844 | ||
e16bb312 NC |
845 | case 'L': |
846 | switch (given & 0x00400100) | |
847 | { | |
848 | case 0x00000000: func (stream, "b"); break; | |
849 | case 0x00400000: func (stream, "h"); break; | |
850 | case 0x00000100: func (stream, "w"); break; | |
851 | case 0x00400100: func (stream, "d"); break; | |
852 | default: | |
853 | break; | |
854 | } | |
855 | break; | |
856 | ||
857 | case 'Z': | |
858 | { | |
859 | int value; | |
860 | /* given (20, 23) | given (0, 3) */ | |
861 | value = ((given >> 16) & 0xf0) | (given & 0xf); | |
862 | func (stream, "%d", value); | |
863 | } | |
864 | break; | |
865 | ||
866 | case 'l': | |
867 | /* This is like the 'A' operator, except that if | |
868 | the width field "M" is zero, then the offset is | |
869 | *not* multiplied by four. */ | |
870 | { | |
871 | int offset = given & 0xff; | |
872 | int multiplier = (given & 0x00000100) ? 4 : 1; | |
873 | ||
874 | func (stream, "[%s", arm_regnames [(given >> 16) & 0xf]); | |
875 | ||
876 | if (offset) | |
877 | { | |
878 | if ((given & 0x01000000) != 0) | |
8e6446ff | 879 | func (stream, ", #%s%d]%s", |
e16bb312 NC |
880 | ((given & 0x00800000) == 0 ? "-" : ""), |
881 | offset * multiplier, | |
882 | ((given & 0x00200000) != 0 ? "!" : "")); | |
883 | else | |
8e6446ff | 884 | func (stream, "], #%s%d", |
e16bb312 NC |
885 | ((given & 0x00800000) == 0 ? "-" : ""), |
886 | offset * multiplier); | |
887 | } | |
888 | else | |
889 | func (stream, "]"); | |
890 | } | |
891 | break; | |
892 | ||
252b5132 RH |
893 | default: |
894 | abort (); | |
895 | } | |
896 | } | |
897 | } | |
898 | else | |
899 | func (stream, "%c", *c); | |
900 | } | |
901 | return 4; | |
902 | } | |
903 | } | |
904 | abort (); | |
905 | } | |
906 | ||
907 | /* Print one instruction from PC on INFO->STREAM. | |
908 | Return the size of the instruction. */ | |
baf0cc5e | 909 | |
252b5132 RH |
910 | static int |
911 | print_insn_thumb (pc, info, given) | |
6a51a8a8 AM |
912 | bfd_vma pc; |
913 | struct disassemble_info *info; | |
914 | long given; | |
252b5132 | 915 | { |
6a51a8a8 AM |
916 | const struct thumb_opcode *insn; |
917 | void *stream = info->stream; | |
918 | fprintf_ftype func = info->fprintf_func; | |
252b5132 RH |
919 | |
920 | for (insn = thumb_opcodes; insn->assembler; insn++) | |
921 | { | |
922 | if ((given & insn->mask) == insn->value) | |
923 | { | |
5876e06d | 924 | char * c = insn->assembler; |
252b5132 | 925 | |
58efb6c0 NC |
926 | /* Special processing for Thumb 2 instruction BL sequence: */ |
927 | if (!*c) /* Check for empty (not NULL) assembler string. */ | |
252b5132 | 928 | { |
4f3c3dbb | 929 | long offset; |
b34976b6 | 930 | |
252b5132 RH |
931 | info->bytes_per_chunk = 4; |
932 | info->bytes_per_line = 4; | |
4f3c3dbb NC |
933 | |
934 | offset = BDISP23 (given); | |
baf0cc5e NC |
935 | offset = offset * 2 + pc + 4; |
936 | ||
077b8428 | 937 | if ((given & 0x10000000) == 0) |
4f3c3dbb NC |
938 | { |
939 | func (stream, "blx\t"); | |
baf0cc5e | 940 | offset &= 0xfffffffc; |
4f3c3dbb | 941 | } |
077b8428 | 942 | else |
4f3c3dbb NC |
943 | func (stream, "bl\t"); |
944 | ||
baf0cc5e | 945 | info->print_address_func (offset, info); |
252b5132 RH |
946 | return 4; |
947 | } | |
948 | else | |
949 | { | |
950 | info->bytes_per_chunk = 2; | |
951 | info->bytes_per_line = 4; | |
b34976b6 | 952 | |
252b5132 | 953 | given &= 0xffff; |
b34976b6 | 954 | |
252b5132 RH |
955 | for (; *c; c++) |
956 | { | |
957 | if (*c == '%') | |
958 | { | |
959 | int domaskpc = 0; | |
960 | int domasklr = 0; | |
b34976b6 | 961 | |
252b5132 RH |
962 | switch (*++c) |
963 | { | |
964 | case '%': | |
965 | func (stream, "%%"); | |
966 | break; | |
967 | ||
968 | case 'S': | |
969 | { | |
970 | long reg; | |
b34976b6 | 971 | |
252b5132 RH |
972 | reg = (given >> 3) & 0x7; |
973 | if (given & (1 << 6)) | |
974 | reg += 8; | |
b34976b6 | 975 | |
252b5132 RH |
976 | func (stream, "%s", arm_regnames[reg]); |
977 | } | |
978 | break; | |
979 | ||
980 | case 'D': | |
981 | { | |
982 | long reg; | |
b34976b6 | 983 | |
252b5132 RH |
984 | reg = given & 0x7; |
985 | if (given & (1 << 7)) | |
986 | reg += 8; | |
b34976b6 | 987 | |
252b5132 RH |
988 | func (stream, "%s", arm_regnames[reg]); |
989 | } | |
990 | break; | |
991 | ||
992 | case 'T': | |
993 | func (stream, "%s", | |
994 | arm_conditional [(given >> 8) & 0xf]); | |
995 | break; | |
996 | ||
997 | case 'N': | |
998 | if (given & (1 << 8)) | |
999 | domasklr = 1; | |
58efb6c0 | 1000 | /* Fall through. */ |
252b5132 RH |
1001 | case 'O': |
1002 | if (*c == 'O' && (given & (1 << 8))) | |
1003 | domaskpc = 1; | |
58efb6c0 | 1004 | /* Fall through. */ |
252b5132 RH |
1005 | case 'M': |
1006 | { | |
1007 | int started = 0; | |
1008 | int reg; | |
b34976b6 | 1009 | |
252b5132 | 1010 | func (stream, "{"); |
b34976b6 | 1011 | |
252b5132 RH |
1012 | /* It would be nice if we could spot |
1013 | ranges, and generate the rS-rE format: */ | |
1014 | for (reg = 0; (reg < 8); reg++) | |
1015 | if ((given & (1 << reg)) != 0) | |
1016 | { | |
1017 | if (started) | |
1018 | func (stream, ", "); | |
1019 | started = 1; | |
1020 | func (stream, "%s", arm_regnames[reg]); | |
1021 | } | |
1022 | ||
1023 | if (domasklr) | |
1024 | { | |
1025 | if (started) | |
1026 | func (stream, ", "); | |
1027 | started = 1; | |
a7f8487e | 1028 | func (stream, arm_regnames[14] /* "lr" */); |
252b5132 RH |
1029 | } |
1030 | ||
1031 | if (domaskpc) | |
1032 | { | |
1033 | if (started) | |
1034 | func (stream, ", "); | |
a7f8487e | 1035 | func (stream, arm_regnames[15] /* "pc" */); |
252b5132 RH |
1036 | } |
1037 | ||
1038 | func (stream, "}"); | |
1039 | } | |
1040 | break; | |
1041 | ||
1042 | ||
b34976b6 | 1043 | case '0': case '1': case '2': case '3': case '4': |
252b5132 RH |
1044 | case '5': case '6': case '7': case '8': case '9': |
1045 | { | |
1046 | int bitstart = *c++ - '0'; | |
1047 | int bitend = 0; | |
b34976b6 | 1048 | |
252b5132 RH |
1049 | while (*c >= '0' && *c <= '9') |
1050 | bitstart = (bitstart * 10) + *c++ - '0'; | |
1051 | ||
1052 | switch (*c) | |
1053 | { | |
1054 | case '-': | |
1055 | { | |
1056 | long reg; | |
b34976b6 | 1057 | |
252b5132 RH |
1058 | c++; |
1059 | while (*c >= '0' && *c <= '9') | |
1060 | bitend = (bitend * 10) + *c++ - '0'; | |
1061 | if (!bitend) | |
1062 | abort (); | |
1063 | reg = given >> bitstart; | |
1064 | reg &= (2 << (bitend - bitstart)) - 1; | |
1065 | switch (*c) | |
1066 | { | |
1067 | case 'r': | |
1068 | func (stream, "%s", arm_regnames[reg]); | |
1069 | break; | |
1070 | ||
1071 | case 'd': | |
1072 | func (stream, "%d", reg); | |
1073 | break; | |
1074 | ||
1075 | case 'H': | |
1076 | func (stream, "%d", reg << 1); | |
1077 | break; | |
1078 | ||
1079 | case 'W': | |
1080 | func (stream, "%d", reg << 2); | |
1081 | break; | |
1082 | ||
1083 | case 'a': | |
1084 | /* PC-relative address -- the bottom two | |
58efb6c0 NC |
1085 | bits of the address are dropped |
1086 | before the calculation. */ | |
252b5132 RH |
1087 | info->print_address_func |
1088 | (((pc + 4) & ~3) + (reg << 2), info); | |
1089 | break; | |
1090 | ||
1091 | case 'x': | |
1092 | func (stream, "0x%04x", reg); | |
1093 | break; | |
1094 | ||
1095 | case 'I': | |
1096 | reg = ((reg ^ (1 << bitend)) - (1 << bitend)); | |
1097 | func (stream, "%d", reg); | |
1098 | break; | |
1099 | ||
1100 | case 'B': | |
1101 | reg = ((reg ^ (1 << bitend)) - (1 << bitend)); | |
1102 | (*info->print_address_func) | |
1103 | (reg * 2 + pc + 4, info); | |
1104 | break; | |
1105 | ||
1106 | default: | |
5876e06d | 1107 | abort (); |
252b5132 RH |
1108 | } |
1109 | } | |
1110 | break; | |
1111 | ||
1112 | case '\'': | |
1113 | c++; | |
1114 | if ((given & (1 << bitstart)) != 0) | |
1115 | func (stream, "%c", *c); | |
1116 | break; | |
1117 | ||
1118 | case '?': | |
1119 | ++c; | |
1120 | if ((given & (1 << bitstart)) != 0) | |
1121 | func (stream, "%c", *c++); | |
1122 | else | |
1123 | func (stream, "%c", *++c); | |
1124 | break; | |
1125 | ||
1126 | default: | |
5876e06d | 1127 | abort (); |
252b5132 RH |
1128 | } |
1129 | } | |
1130 | break; | |
1131 | ||
1132 | default: | |
1133 | abort (); | |
1134 | } | |
1135 | } | |
1136 | else | |
1137 | func (stream, "%c", *c); | |
1138 | } | |
1139 | } | |
1140 | return 2; | |
1141 | } | |
1142 | } | |
1143 | ||
58efb6c0 | 1144 | /* No match. */ |
252b5132 RH |
1145 | abort (); |
1146 | } | |
1147 | ||
22a398e1 NC |
1148 | /* Disallow mapping symbols ($a, $b, $d, $t etc) from |
1149 | being displayed in symbol relative addresses. */ | |
1150 | ||
1151 | bfd_boolean | |
1152 | arm_symbol_is_valid (asymbol * sym, | |
1153 | struct disassemble_info * info ATTRIBUTE_UNUSED) | |
1154 | { | |
1155 | const char * name; | |
1156 | ||
1157 | if (sym == NULL) | |
1158 | return FALSE; | |
1159 | ||
1160 | name = bfd_asymbol_name (sym); | |
1161 | ||
1162 | return (name && *name != '$'); | |
1163 | } | |
1164 | ||
58efb6c0 | 1165 | /* Parse an individual disassembler option. */ |
baf0cc5e | 1166 | |
a3d9c82d NC |
1167 | void |
1168 | parse_arm_disassembler_option (option) | |
01c7f630 | 1169 | char * option; |
dd92f639 | 1170 | { |
01c7f630 | 1171 | if (option == NULL) |
dd92f639 | 1172 | return; |
b34976b6 | 1173 | |
01c7f630 | 1174 | if (strneq (option, "reg-names-", 10)) |
dd92f639 | 1175 | { |
58efb6c0 | 1176 | int i; |
b34976b6 | 1177 | |
01c7f630 | 1178 | option += 10; |
58efb6c0 NC |
1179 | |
1180 | for (i = NUM_ARM_REGNAMES; i--;) | |
31e0f3cd | 1181 | if (strneq (option, regnames[i].name, strlen (regnames[i].name))) |
58efb6c0 NC |
1182 | { |
1183 | regname_selected = i; | |
1184 | break; | |
1185 | } | |
b34976b6 | 1186 | |
58efb6c0 | 1187 | if (i < 0) |
31e0f3cd | 1188 | /* XXX - should break 'option' at following delimiter. */ |
58efb6c0 | 1189 | fprintf (stderr, _("Unrecognised register name set: %s\n"), option); |
dd92f639 | 1190 | } |
31e0f3cd | 1191 | else if (strneq (option, "force-thumb", 11)) |
01c7f630 | 1192 | force_thumb = 1; |
31e0f3cd | 1193 | else if (strneq (option, "no-force-thumb", 14)) |
01c7f630 | 1194 | force_thumb = 0; |
dd92f639 | 1195 | else |
31e0f3cd | 1196 | /* XXX - should break 'option' at following delimiter. */ |
58efb6c0 | 1197 | fprintf (stderr, _("Unrecognised disassembler option: %s\n"), option); |
b34976b6 | 1198 | |
dd92f639 NC |
1199 | return; |
1200 | } | |
1201 | ||
31e0f3cd NC |
1202 | /* Parse the string of disassembler options, spliting it at whitespaces |
1203 | or commas. (Whitespace separators supported for backwards compatibility). */ | |
baf0cc5e | 1204 | |
01c7f630 NC |
1205 | static void |
1206 | parse_disassembler_options (options) | |
1207 | char * options; | |
1208 | { | |
01c7f630 NC |
1209 | if (options == NULL) |
1210 | return; | |
1211 | ||
31e0f3cd | 1212 | while (*options) |
01c7f630 | 1213 | { |
31e0f3cd NC |
1214 | parse_arm_disassembler_option (options); |
1215 | ||
1216 | /* Skip forward to next seperator. */ | |
1217 | while ((*options) && (! ISSPACE (*options)) && (*options != ',')) | |
1218 | ++ options; | |
1219 | /* Skip forward past seperators. */ | |
1220 | while (ISSPACE (*options) || (*options == ',')) | |
1221 | ++ options; | |
01c7f630 | 1222 | } |
01c7f630 NC |
1223 | } |
1224 | ||
58efb6c0 NC |
1225 | /* NOTE: There are no checks in these routines that |
1226 | the relevant number of data bytes exist. */ | |
baf0cc5e | 1227 | |
58efb6c0 NC |
1228 | static int |
1229 | print_insn (pc, info, little) | |
252b5132 | 1230 | bfd_vma pc; |
5876e06d | 1231 | struct disassemble_info * info; |
b34976b6 | 1232 | bfd_boolean little; |
252b5132 RH |
1233 | { |
1234 | unsigned char b[4]; | |
1235 | long given; | |
1236 | int status; | |
252b5132 | 1237 | int is_thumb; |
58efb6c0 | 1238 | |
dd92f639 NC |
1239 | if (info->disassembler_options) |
1240 | { | |
1241 | parse_disassembler_options (info->disassembler_options); | |
b34976b6 | 1242 | |
58efb6c0 | 1243 | /* To avoid repeated parsing of these options, we remove them here. */ |
dd92f639 NC |
1244 | info->disassembler_options = NULL; |
1245 | } | |
b34976b6 | 1246 | |
01c7f630 | 1247 | is_thumb = force_thumb; |
b34976b6 | 1248 | |
01c7f630 | 1249 | if (!is_thumb && info->symbols != NULL) |
252b5132 | 1250 | { |
5876e06d NC |
1251 | if (bfd_asymbol_flavour (*info->symbols) == bfd_target_coff_flavour) |
1252 | { | |
2f0ca46a | 1253 | coff_symbol_type * cs; |
b34976b6 | 1254 | |
5876e06d NC |
1255 | cs = coffsymbol (*info->symbols); |
1256 | is_thumb = ( cs->native->u.syment.n_sclass == C_THUMBEXT | |
1257 | || cs->native->u.syment.n_sclass == C_THUMBSTAT | |
1258 | || cs->native->u.syment.n_sclass == C_THUMBLABEL | |
1259 | || cs->native->u.syment.n_sclass == C_THUMBEXTFUNC | |
1260 | || cs->native->u.syment.n_sclass == C_THUMBSTATFUNC); | |
1261 | } | |
1262 | else if (bfd_asymbol_flavour (*info->symbols) == bfd_target_elf_flavour) | |
1263 | { | |
2f0ca46a | 1264 | elf_symbol_type * es; |
58efb6c0 | 1265 | unsigned int type; |
b34976b6 | 1266 | |
5876e06d | 1267 | es = *(elf_symbol_type **)(info->symbols); |
58efb6c0 | 1268 | type = ELF_ST_TYPE (es->internal_elf_sym.st_info); |
b34976b6 | 1269 | |
58efb6c0 | 1270 | is_thumb = (type == STT_ARM_TFUNC) || (type == STT_ARM_16BIT); |
5876e06d NC |
1271 | } |
1272 | } | |
b34976b6 | 1273 | |
252b5132 | 1274 | info->bytes_per_chunk = 4; |
58efb6c0 | 1275 | info->display_endian = little ? BFD_ENDIAN_LITTLE : BFD_ENDIAN_BIG; |
252b5132 | 1276 | |
58efb6c0 | 1277 | if (little) |
252b5132 | 1278 | { |
58efb6c0 NC |
1279 | status = info->read_memory_func (pc, (bfd_byte *) &b[0], 4, info); |
1280 | if (status != 0 && is_thumb) | |
1281 | { | |
1282 | info->bytes_per_chunk = 2; | |
b34976b6 | 1283 | |
58efb6c0 NC |
1284 | status = info->read_memory_func (pc, (bfd_byte *) b, 2, info); |
1285 | b[3] = b[2] = 0; | |
1286 | } | |
b34976b6 | 1287 | |
58efb6c0 NC |
1288 | if (status != 0) |
1289 | { | |
1290 | info->memory_error_func (status, pc, info); | |
1291 | return -1; | |
1292 | } | |
b34976b6 | 1293 | |
58efb6c0 | 1294 | given = (b[0]) | (b[1] << 8) | (b[2] << 16) | (b[3] << 24); |
252b5132 | 1295 | } |
58efb6c0 | 1296 | else |
252b5132 | 1297 | { |
58efb6c0 NC |
1298 | status = info->read_memory_func |
1299 | (pc & ~ 0x3, (bfd_byte *) &b[0], 4, info); | |
1300 | if (status != 0) | |
252b5132 | 1301 | { |
58efb6c0 NC |
1302 | info->memory_error_func (status, pc, info); |
1303 | return -1; | |
1304 | } | |
b34976b6 | 1305 | |
58efb6c0 NC |
1306 | if (is_thumb) |
1307 | { | |
1308 | if (pc & 0x2) | |
252b5132 | 1309 | { |
58efb6c0 | 1310 | given = (b[2] << 8) | b[3]; |
b34976b6 | 1311 | |
58efb6c0 NC |
1312 | status = info->read_memory_func |
1313 | ((pc + 4) & ~ 0x3, (bfd_byte *) b, 4, info); | |
1314 | if (status != 0) | |
1315 | { | |
1316 | info->memory_error_func (status, pc + 4, info); | |
1317 | return -1; | |
1318 | } | |
b34976b6 | 1319 | |
58efb6c0 | 1320 | given |= (b[0] << 24) | (b[1] << 16); |
252b5132 | 1321 | } |
58efb6c0 NC |
1322 | else |
1323 | given = (b[0] << 8) | b[1] | (b[2] << 24) | (b[3] << 16); | |
252b5132 RH |
1324 | } |
1325 | else | |
58efb6c0 | 1326 | given = (b[0] << 24) | (b[1] << 16) | (b[2] << 8) | (b[3]); |
252b5132 | 1327 | } |
b34976b6 | 1328 | |
6a56ec7e NC |
1329 | if (info->flags & INSN_HAS_RELOC) |
1330 | /* If the instruction has a reloc associated with it, then | |
1331 | the offset field in the instruction will actually be the | |
1332 | addend for the reloc. (We are using REL type relocs). | |
1333 | In such cases, we can ignore the pc when computing | |
1334 | addresses, since the addend is not currently pc-relative. */ | |
1335 | pc = 0; | |
b34976b6 | 1336 | |
252b5132 | 1337 | if (is_thumb) |
5876e06d | 1338 | status = print_insn_thumb (pc, info, given); |
252b5132 | 1339 | else |
5876e06d | 1340 | status = print_insn_arm (pc, info, given); |
252b5132 RH |
1341 | |
1342 | return status; | |
1343 | } | |
1344 | ||
1345 | int | |
58efb6c0 | 1346 | print_insn_big_arm (pc, info) |
252b5132 RH |
1347 | bfd_vma pc; |
1348 | struct disassemble_info * info; | |
1349 | { | |
b34976b6 | 1350 | return print_insn (pc, info, FALSE); |
58efb6c0 | 1351 | } |
01c7f630 | 1352 | |
58efb6c0 NC |
1353 | int |
1354 | print_insn_little_arm (pc, info) | |
1355 | bfd_vma pc; | |
1356 | struct disassemble_info * info; | |
1357 | { | |
b34976b6 | 1358 | return print_insn (pc, info, TRUE); |
58efb6c0 | 1359 | } |
252b5132 | 1360 | |
58efb6c0 NC |
1361 | void |
1362 | print_arm_disassembler_options (FILE * stream) | |
1363 | { | |
1364 | int i; | |
252b5132 | 1365 | |
58efb6c0 NC |
1366 | fprintf (stream, _("\n\ |
1367 | The following ARM specific disassembler options are supported for use with\n\ | |
1368 | the -M switch:\n")); | |
b34976b6 | 1369 | |
58efb6c0 NC |
1370 | for (i = NUM_ARM_REGNAMES; i--;) |
1371 | fprintf (stream, " reg-names-%s %*c%s\n", | |
1372 | regnames[i].name, | |
d5b2f4d6 | 1373 | (int)(14 - strlen (regnames[i].name)), ' ', |
58efb6c0 NC |
1374 | regnames[i].description); |
1375 | ||
1376 | fprintf (stream, " force-thumb Assume all insns are Thumb insns\n"); | |
1377 | fprintf (stream, " no-force-thumb Examine preceeding label to determine an insn's type\n\n"); | |
252b5132 | 1378 | } |