file as.info-6 was initially added on branch binutils-2_10-branch.
[binutils.git] / opcodes / arm-dis.c
bloba3e7112b3fc1767447fbd02e6afa586f56406d1e
1 /* Instruction printing code for the ARM
2 Copyright (C) 1994, 95, 96, 97, 98, 99, 2000 Free Software Foundation, Inc.
3 Contributed by Richard Earnshaw (rwe@pegasus.esprit.ec.org)
4 Modification by James G. Smith (jsmith@cygnus.co.uk)
6 This file is part of libopcodes.
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.
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.
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. */
22 #include "sysdep.h"
23 #include "dis-asm.h"
24 #define DEFINE_TABLE
25 #include "arm-opc.h"
26 #include "coff/internal.h"
27 #include "libcoff.h"
28 #include "opintl.h"
30 /* FIXME: This shouldn't be done here */
31 #include "elf-bfd.h"
32 #include "elf/internal.h"
33 #include "elf/arm.h"
35 #ifndef streq
36 #define streq(a,b) (strcmp ((a), (b)) == 0)
37 #endif
39 #ifndef strneq
40 #define strneq(a,b,n) (strncmp ((a), (b), (n)) == 0)
41 #endif
43 #ifndef NUM_ELEM
44 #define NUM_ELEM(a) (sizeof (a) / sizeof (a)[0])
45 #endif
47 static char * arm_conditional[] =
48 {"eq", "ne", "cs", "cc", "mi", "pl", "vs", "vc",
49 "hi", "ls", "ge", "lt", "gt", "le", "", "nv"};
51 typedef struct
53 const char * name;
54 const char * description;
55 const char * reg_names[16];
57 arm_regname;
59 static arm_regname regnames[] =
61 { "raw" , "Select raw register names",
62 { "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15"}},
63 { "std", "Select register names used in ARM's ISA documentation",
64 { "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", "r8", "r9", "r10", "r11", "r12", "sp", "lr", "pc" }},
65 { "apcs", "Select register names used in the APCS",
66 { "a1", "a2", "a3", "a4", "v1", "v2", "v3", "v4", "v5", "v6", "sl", "fp", "ip", "sp", "lr", "pc" }},
67 { "atpcs", "Select register names used in the ATPCS",
68 { "a1", "a2", "a3", "a4", "v1", "v2", "v3", "v4", "v5", "v6", "v7", "v8", "IP", "SP", "LR", "PC" }},
69 { "special-atpcs", "Select special register names used in the ATPCS",
70 { "a1", "a2", "a3", "a4", "v1", "v2", "v3", "WR", "v5", "SB", "SL", "FP", "IP", "SP", "LR", "PC" }}
73 /* Default to standard register name set. */
74 static unsigned int regname_selected = 1;
76 #define NUM_ARM_REGNAMES NUM_ELEM (regnames)
77 #define arm_regnames regnames[regname_selected].reg_names
79 static boolean force_thumb = false;
81 static char * arm_fp_const[] =
82 {"0.0", "1.0", "2.0", "3.0", "4.0", "5.0", "0.5", "10.0"};
84 static char * arm_shift[] =
85 {"lsl", "lsr", "asr", "ror"};
87 /* Forward declarations. */
88 static void arm_decode_shift PARAMS ((long, fprintf_ftype, void *));
89 static int print_insn_arm PARAMS ((bfd_vma, struct disassemble_info *, long));
90 static int print_insn_thumb PARAMS ((bfd_vma, struct disassemble_info *, long));
91 static void parse_disassembler_options PARAMS ((char *));
92 static int print_insn PARAMS ((bfd_vma, struct disassemble_info *, boolean));
93 int get_arm_regname_num_options (void);
94 int set_arm_regname_option (int option);
95 int get_arm_regnames (int option, const char **setname,
96 const char **setdescription,
97 const char ***register_names);
99 /* Functions. */
101 get_arm_regname_num_options (void)
103 return NUM_ARM_REGNAMES;
107 set_arm_regname_option (int option)
109 int old = regname_selected;
110 regname_selected = option;
111 return old;
115 get_arm_regnames (int option, const char **setname,
116 const char **setdescription,
117 const char ***register_names)
119 *setname = regnames[option].name;
120 *setdescription = regnames[option].description;
121 *register_names = regnames[option].reg_names;
122 return 16;
125 static void
126 arm_decode_shift (given, func, stream)
127 long given;
128 fprintf_ftype func;
129 void * stream;
131 func (stream, "%s", arm_regnames[given & 0xf]);
133 if ((given & 0xff0) != 0)
135 if ((given & 0x10) == 0)
137 int amount = (given & 0xf80) >> 7;
138 int shift = (given & 0x60) >> 5;
140 if (amount == 0)
142 if (shift == 3)
144 func (stream, ", rrx");
145 return;
148 amount = 32;
151 func (stream, ", %s #%d", arm_shift[shift], amount);
153 else
154 func (stream, ", %s %s", arm_shift[(given & 0x60) >> 5],
155 arm_regnames[(given & 0xf00) >> 8]);
159 /* Print one instruction from PC on INFO->STREAM.
160 Return the size of the instruction (always 4 on ARM). */
161 static int
162 print_insn_arm (pc, info, given)
163 bfd_vma pc;
164 struct disassemble_info * info;
165 long given;
167 struct arm_opcode * insn;
168 void * stream = info->stream;
169 fprintf_ftype func = info->fprintf_func;
171 for (insn = arm_opcodes; insn->assembler; insn++)
173 if ((given & insn->mask) == insn->value)
175 char * c;
177 for (c = insn->assembler; *c; c++)
179 if (*c == '%')
181 switch (*++c)
183 case '%':
184 func (stream, "%%");
185 break;
187 case 'a':
188 if (((given & 0x000f0000) == 0x000f0000)
189 && ((given & 0x02000000) == 0))
191 int offset = given & 0xfff;
193 func (stream, "[pc");
195 if (given & 0x01000000)
197 if ((given & 0x00800000) == 0)
198 offset = - offset;
200 /* pre-indexed */
201 func (stream, ", #%x]", offset);
203 offset += pc + 8;
205 /* Cope with the possibility of write-back
206 being used. Probably a very dangerous thing
207 for the programmer to do, but who are we to
208 argue ? */
209 if (given & 0x00200000)
210 func (stream, "!");
212 else
214 /* Post indexed. */
215 func (stream, "], #%x", offset);
217 offset = pc + 8; /* ie ignore the offset. */
220 func (stream, "\t; ");
221 info->print_address_func (offset, info);
223 else
225 func (stream, "[%s",
226 arm_regnames[(given >> 16) & 0xf]);
227 if ((given & 0x01000000) != 0)
229 if ((given & 0x02000000) == 0)
231 int offset = given & 0xfff;
232 if (offset)
233 func (stream, ", %s#%d",
234 (((given & 0x00800000) == 0)
235 ? "-" : ""), offset);
237 else
239 func (stream, ", %s",
240 (((given & 0x00800000) == 0)
241 ? "-" : ""));
242 arm_decode_shift (given, func, stream);
245 func (stream, "]%s",
246 ((given & 0x00200000) != 0) ? "!" : "");
248 else
250 if ((given & 0x02000000) == 0)
252 int offset = given & 0xfff;
253 if (offset)
254 func (stream, "], %s#%d",
255 (((given & 0x00800000) == 0)
256 ? "-" : ""), offset);
257 else
258 func (stream, "]");
260 else
262 func (stream, "], %s",
263 (((given & 0x00800000) == 0)
264 ? "-" : ""));
265 arm_decode_shift (given, func, stream);
269 break;
271 case 's':
272 if ((given & 0x004f0000) == 0x004f0000)
274 /* PC relative with immediate offset. */
275 int offset = ((given & 0xf00) >> 4) | (given & 0xf);
277 if ((given & 0x00800000) == 0)
278 offset = -offset;
280 func (stream, "[pc, #%x]\t; ", offset);
282 (*info->print_address_func)
283 (offset + pc + 8, info);
285 else
287 func (stream, "[%s",
288 arm_regnames[(given >> 16) & 0xf]);
289 if ((given & 0x01000000) != 0)
291 /* Pre-indexed. */
292 if ((given & 0x00400000) == 0x00400000)
294 /* Immediate. */
295 int offset = ((given & 0xf00) >> 4) | (given & 0xf);
296 if (offset)
297 func (stream, ", %s#%d",
298 (((given & 0x00800000) == 0)
299 ? "-" : ""), offset);
301 else
303 /* Register. */
304 func (stream, ", %s%s",
305 (((given & 0x00800000) == 0)
306 ? "-" : ""),
307 arm_regnames[given & 0xf]);
310 func (stream, "]%s",
311 ((given & 0x00200000) != 0) ? "!" : "");
313 else
315 /* Post-indexed. */
316 if ((given & 0x00400000) == 0x00400000)
318 /* Immediate. */
319 int offset = ((given & 0xf00) >> 4) | (given & 0xf);
320 if (offset)
321 func (stream, "], %s#%d",
322 (((given & 0x00800000) == 0)
323 ? "-" : ""), offset);
324 else
325 func (stream, "]");
327 else
329 /* Register. */
330 func (stream, "], %s%s",
331 (((given & 0x00800000) == 0)
332 ? "-" : ""),
333 arm_regnames[given & 0xf]);
337 break;
339 case 'b':
340 (*info->print_address_func)
341 (BDISP (given) * 4 + pc + 8, info);
342 break;
344 case 'c':
345 func (stream, "%s",
346 arm_conditional [(given >> 28) & 0xf]);
347 break;
349 case 'm':
351 int started = 0;
352 int reg;
354 func (stream, "{");
355 for (reg = 0; reg < 16; reg++)
356 if ((given & (1 << reg)) != 0)
358 if (started)
359 func (stream, ", ");
360 started = 1;
361 func (stream, "%s", arm_regnames[reg]);
363 func (stream, "}");
365 break;
367 case 'o':
368 if ((given & 0x02000000) != 0)
370 int rotate = (given & 0xf00) >> 7;
371 int immed = (given & 0xff);
372 immed = (((immed << (32 - rotate))
373 | (immed >> rotate)) & 0xffffffff);
374 func (stream, "#%d\t; 0x%x", immed, immed);
376 else
377 arm_decode_shift (given, func, stream);
378 break;
380 case 'p':
381 if ((given & 0x0000f000) == 0x0000f000)
382 func (stream, "p");
383 break;
385 case 't':
386 if ((given & 0x01200000) == 0x00200000)
387 func (stream, "t");
388 break;
390 case 'h':
391 if ((given & 0x00000020) == 0x00000020)
392 func (stream, "h");
393 else
394 func (stream, "b");
395 break;
397 case 'A':
398 func (stream, "[%s", arm_regnames [(given >> 16) & 0xf]);
399 if ((given & 0x01000000) != 0)
401 int offset = given & 0xff;
402 if (offset)
403 func (stream, ", %s#%d]%s",
404 ((given & 0x00800000) == 0 ? "-" : ""),
405 offset * 4,
406 ((given & 0x00200000) != 0 ? "!" : ""));
407 else
408 func (stream, "]");
410 else
412 int offset = given & 0xff;
413 if (offset)
414 func (stream, "], %s#%d",
415 ((given & 0x00800000) == 0 ? "-" : ""),
416 offset * 4);
417 else
418 func (stream, "]");
420 break;
422 case 'C':
423 switch (given & 0x000f0000)
425 default:
426 func (stream, "_???");
427 break;
428 case 0x90000:
429 func (stream, "_all");
430 break;
431 case 0x10000:
432 func (stream, "_c");
433 break;
434 case 0x20000:
435 func (stream, "_x");
436 break;
437 case 0x40000:
438 func (stream, "_s");
439 break;
440 case 0x80000:
441 func (stream, "_f");
442 break;
444 break;
446 case 'F':
447 switch (given & 0x00408000)
449 case 0:
450 func (stream, "4");
451 break;
452 case 0x8000:
453 func (stream, "1");
454 break;
455 case 0x00400000:
456 func (stream, "2");
457 break;
458 default:
459 func (stream, "3");
461 break;
463 case 'P':
464 switch (given & 0x00080080)
466 case 0:
467 func (stream, "s");
468 break;
469 case 0x80:
470 func (stream, "d");
471 break;
472 case 0x00080000:
473 func (stream, "e");
474 break;
475 default:
476 func (stream, _("<illegal precision>"));
477 break;
479 break;
480 case 'Q':
481 switch (given & 0x00408000)
483 case 0:
484 func (stream, "s");
485 break;
486 case 0x8000:
487 func (stream, "d");
488 break;
489 case 0x00400000:
490 func (stream, "e");
491 break;
492 default:
493 func (stream, "p");
494 break;
496 break;
497 case 'R':
498 switch (given & 0x60)
500 case 0:
501 break;
502 case 0x20:
503 func (stream, "p");
504 break;
505 case 0x40:
506 func (stream, "m");
507 break;
508 default:
509 func (stream, "z");
510 break;
512 break;
514 case '0': case '1': case '2': case '3': case '4':
515 case '5': case '6': case '7': case '8': case '9':
517 int bitstart = *c++ - '0';
518 int bitend = 0;
519 while (*c >= '0' && *c <= '9')
520 bitstart = (bitstart * 10) + *c++ - '0';
522 switch (*c)
524 case '-':
525 c++;
527 while (*c >= '0' && *c <= '9')
528 bitend = (bitend * 10) + *c++ - '0';
530 if (!bitend)
531 abort ();
533 switch (*c)
535 case 'r':
537 long reg;
539 reg = given >> bitstart;
540 reg &= (2 << (bitend - bitstart)) - 1;
542 func (stream, "%s", arm_regnames[reg]);
544 break;
545 case 'd':
547 long reg;
549 reg = given >> bitstart;
550 reg &= (2 << (bitend - bitstart)) - 1;
552 func (stream, "%d", reg);
554 break;
555 case 'x':
557 long reg;
559 reg = given >> bitstart;
560 reg &= (2 << (bitend - bitstart)) - 1;
562 func (stream, "0x%08x", reg);
564 /* Some SWI instructions have special
565 meanings. */
566 if ((given & 0x0fffffff) == 0x0FF00000)
567 func (stream, "\t; IMB");
568 else if ((given & 0x0fffffff) == 0x0FF00001)
569 func (stream, "\t; IMBRange");
571 break;
572 case 'X':
574 long reg;
576 reg = given >> bitstart;
577 reg &= (2 << (bitend - bitstart)) - 1;
579 func (stream, "%01x", reg & 0xf);
581 break;
582 case 'f':
584 long reg;
586 reg = given >> bitstart;
587 reg &= (2 << (bitend - bitstart)) - 1;
589 if (reg > 7)
590 func (stream, "#%s",
591 arm_fp_const[reg & 7]);
592 else
593 func (stream, "f%d", reg);
595 break;
596 default:
597 abort ();
599 break;
601 case '`':
602 c++;
603 if ((given & (1 << bitstart)) == 0)
604 func (stream, "%c", *c);
605 break;
606 case '\'':
607 c++;
608 if ((given & (1 << bitstart)) != 0)
609 func (stream, "%c", *c);
610 break;
611 case '?':
612 ++c;
613 if ((given & (1 << bitstart)) != 0)
614 func (stream, "%c", *c++);
615 else
616 func (stream, "%c", *++c);
617 break;
618 default:
619 abort ();
621 break;
623 default:
624 abort ();
628 else
629 func (stream, "%c", *c);
631 return 4;
634 abort ();
637 /* Print one instruction from PC on INFO->STREAM.
638 Return the size of the instruction. */
639 static int
640 print_insn_thumb (pc, info, given)
641 bfd_vma pc;
642 struct disassemble_info * info;
643 long given;
645 struct thumb_opcode * insn;
646 void * stream = info->stream;
647 fprintf_ftype func = info->fprintf_func;
649 for (insn = thumb_opcodes; insn->assembler; insn++)
651 if ((given & insn->mask) == insn->value)
653 char * c = insn->assembler;
655 /* Special processing for Thumb 2 instruction BL sequence: */
656 if (!*c) /* Check for empty (not NULL) assembler string. */
658 info->bytes_per_chunk = 4;
659 info->bytes_per_line = 4;
661 func (stream, "bl\t");
663 info->print_address_func (BDISP23 (given) * 2 + pc + 4, info);
664 return 4;
666 else
668 info->bytes_per_chunk = 2;
669 info->bytes_per_line = 4;
671 given &= 0xffff;
673 for (; *c; c++)
675 if (*c == '%')
677 int domaskpc = 0;
678 int domasklr = 0;
680 switch (*++c)
682 case '%':
683 func (stream, "%%");
684 break;
686 case 'S':
688 long reg;
690 reg = (given >> 3) & 0x7;
691 if (given & (1 << 6))
692 reg += 8;
694 func (stream, "%s", arm_regnames[reg]);
696 break;
698 case 'D':
700 long reg;
702 reg = given & 0x7;
703 if (given & (1 << 7))
704 reg += 8;
706 func (stream, "%s", arm_regnames[reg]);
708 break;
710 case 'T':
711 func (stream, "%s",
712 arm_conditional [(given >> 8) & 0xf]);
713 break;
715 case 'N':
716 if (given & (1 << 8))
717 domasklr = 1;
718 /* Fall through. */
719 case 'O':
720 if (*c == 'O' && (given & (1 << 8)))
721 domaskpc = 1;
722 /* Fall through. */
723 case 'M':
725 int started = 0;
726 int reg;
728 func (stream, "{");
730 /* It would be nice if we could spot
731 ranges, and generate the rS-rE format: */
732 for (reg = 0; (reg < 8); reg++)
733 if ((given & (1 << reg)) != 0)
735 if (started)
736 func (stream, ", ");
737 started = 1;
738 func (stream, "%s", arm_regnames[reg]);
741 if (domasklr)
743 if (started)
744 func (stream, ", ");
745 started = 1;
746 func (stream, arm_regnames[14] /* "lr" */);
749 if (domaskpc)
751 if (started)
752 func (stream, ", ");
753 func (stream, arm_regnames[15] /* "pc" */);
756 func (stream, "}");
758 break;
761 case '0': case '1': case '2': case '3': case '4':
762 case '5': case '6': case '7': case '8': case '9':
764 int bitstart = *c++ - '0';
765 int bitend = 0;
767 while (*c >= '0' && *c <= '9')
768 bitstart = (bitstart * 10) + *c++ - '0';
770 switch (*c)
772 case '-':
774 long reg;
776 c++;
777 while (*c >= '0' && *c <= '9')
778 bitend = (bitend * 10) + *c++ - '0';
779 if (!bitend)
780 abort ();
781 reg = given >> bitstart;
782 reg &= (2 << (bitend - bitstart)) - 1;
783 switch (*c)
785 case 'r':
786 func (stream, "%s", arm_regnames[reg]);
787 break;
789 case 'd':
790 func (stream, "%d", reg);
791 break;
793 case 'H':
794 func (stream, "%d", reg << 1);
795 break;
797 case 'W':
798 func (stream, "%d", reg << 2);
799 break;
801 case 'a':
802 /* PC-relative address -- the bottom two
803 bits of the address are dropped
804 before the calculation. */
805 info->print_address_func
806 (((pc + 4) & ~3) + (reg << 2), info);
807 break;
809 case 'x':
810 func (stream, "0x%04x", reg);
811 break;
813 case 'I':
814 reg = ((reg ^ (1 << bitend)) - (1 << bitend));
815 func (stream, "%d", reg);
816 break;
818 case 'B':
819 reg = ((reg ^ (1 << bitend)) - (1 << bitend));
820 (*info->print_address_func)
821 (reg * 2 + pc + 4, info);
822 break;
824 default:
825 abort ();
828 break;
830 case '\'':
831 c++;
832 if ((given & (1 << bitstart)) != 0)
833 func (stream, "%c", *c);
834 break;
836 case '?':
837 ++c;
838 if ((given & (1 << bitstart)) != 0)
839 func (stream, "%c", *c++);
840 else
841 func (stream, "%c", *++c);
842 break;
844 default:
845 abort ();
848 break;
850 default:
851 abort ();
854 else
855 func (stream, "%c", *c);
858 return 2;
862 /* No match. */
863 abort ();
866 /* Parse an individual disassembler option. */
867 void
868 parse_arm_disassembler_option (option)
869 char * option;
871 if (option == NULL)
872 return;
874 if (strneq (option, "reg-names-", 10))
876 int i;
878 option += 10;
880 for (i = NUM_ARM_REGNAMES; i--;)
881 if (streq (option, regnames[i].name))
883 regname_selected = i;
884 break;
887 if (i < 0)
888 fprintf (stderr, _("Unrecognised register name set: %s\n"), option);
890 else if (streq (option, "force-thumb"))
891 force_thumb = 1;
892 else if (streq (option, "no-force-thumb"))
893 force_thumb = 0;
894 else
895 fprintf (stderr, _("Unrecognised disassembler option: %s\n"), option);
897 return;
900 /* Parse the string of disassembler options, spliting it at whitespaces. */
901 static void
902 parse_disassembler_options (options)
903 char * options;
905 char * space;
907 if (options == NULL)
908 return;
912 space = strchr (options, ' ');
914 if (space)
916 * space = '\0';
917 parse_arm_disassembler_option (options);
918 * space = ' ';
919 options = space + 1;
921 else
922 parse_arm_disassembler_option (options);
924 while (space);
927 /* NOTE: There are no checks in these routines that
928 the relevant number of data bytes exist. */
929 static int
930 print_insn (pc, info, little)
931 bfd_vma pc;
932 struct disassemble_info * info;
933 boolean little;
935 unsigned char b[4];
936 long given;
937 int status;
938 int is_thumb;
940 if (info->disassembler_options)
942 parse_disassembler_options (info->disassembler_options);
944 /* To avoid repeated parsing of these options, we remove them here. */
945 info->disassembler_options = NULL;
948 is_thumb = force_thumb;
950 if (!is_thumb && info->symbols != NULL)
952 if (bfd_asymbol_flavour (*info->symbols) == bfd_target_coff_flavour)
954 coff_symbol_type * cs;
956 cs = coffsymbol (*info->symbols);
957 is_thumb = ( cs->native->u.syment.n_sclass == C_THUMBEXT
958 || cs->native->u.syment.n_sclass == C_THUMBSTAT
959 || cs->native->u.syment.n_sclass == C_THUMBLABEL
960 || cs->native->u.syment.n_sclass == C_THUMBEXTFUNC
961 || cs->native->u.syment.n_sclass == C_THUMBSTATFUNC);
963 else if (bfd_asymbol_flavour (*info->symbols) == bfd_target_elf_flavour)
965 elf_symbol_type * es;
966 unsigned int type;
968 es = *(elf_symbol_type **)(info->symbols);
969 type = ELF_ST_TYPE (es->internal_elf_sym.st_info);
971 is_thumb = (type == STT_ARM_TFUNC) || (type == STT_ARM_16BIT);
975 info->bytes_per_chunk = 4;
976 info->display_endian = little ? BFD_ENDIAN_LITTLE : BFD_ENDIAN_BIG;
978 if (little)
980 status = info->read_memory_func (pc, (bfd_byte *) &b[0], 4, info);
981 if (status != 0 && is_thumb)
983 info->bytes_per_chunk = 2;
985 status = info->read_memory_func (pc, (bfd_byte *) b, 2, info);
986 b[3] = b[2] = 0;
989 if (status != 0)
991 info->memory_error_func (status, pc, info);
992 return -1;
995 given = (b[0]) | (b[1] << 8) | (b[2] << 16) | (b[3] << 24);
997 else
999 status = info->read_memory_func
1000 (pc & ~ 0x3, (bfd_byte *) &b[0], 4, info);
1001 if (status != 0)
1003 info->memory_error_func (status, pc, info);
1004 return -1;
1007 if (is_thumb)
1009 if (pc & 0x2)
1011 given = (b[2] << 8) | b[3];
1013 status = info->read_memory_func
1014 ((pc + 4) & ~ 0x3, (bfd_byte *) b, 4, info);
1015 if (status != 0)
1017 info->memory_error_func (status, pc + 4, info);
1018 return -1;
1021 given |= (b[0] << 24) | (b[1] << 16);
1023 else
1024 given = (b[0] << 8) | b[1] | (b[2] << 24) | (b[3] << 16);
1026 else
1027 given = (b[0] << 24) | (b[1] << 16) | (b[2] << 8) | (b[3]);
1030 if (is_thumb)
1031 status = print_insn_thumb (pc, info, given);
1032 else
1033 status = print_insn_arm (pc, info, given);
1035 return status;
1039 print_insn_big_arm (pc, info)
1040 bfd_vma pc;
1041 struct disassemble_info * info;
1043 return print_insn (pc, info, false);
1047 print_insn_little_arm (pc, info)
1048 bfd_vma pc;
1049 struct disassemble_info * info;
1051 return print_insn (pc, info, true);
1054 void
1055 print_arm_disassembler_options (FILE * stream)
1057 int i;
1059 fprintf (stream, _("\n\
1060 The following ARM specific disassembler options are supported for use with\n\
1061 the -M switch:\n"));
1063 for (i = NUM_ARM_REGNAMES; i--;)
1064 fprintf (stream, " reg-names-%s %*c%s\n",
1065 regnames[i].name,
1066 14 - strlen (regnames[i].name), ' ',
1067 regnames[i].description);
1069 fprintf (stream, " force-thumb Assume all insns are Thumb insns\n");
1070 fprintf (stream, " no-force-thumb Examine preceeding label to determine an insn's type\n\n");