i386: Align branches within a fixed boundary
[deliverable/binutils-gdb.git] / opcodes / disassemble.c
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CommitLineData
1/* Select disassembly routine for specified architecture.
2 Copyright (C) 1994-2019 Free Software Foundation, Inc.
3
4 This file is part of the GNU opcodes library.
5
6 This library is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 3 of the License, or
9 (at your option) any later version.
10
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
15
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
19 MA 02110-1301, USA. */
20
21#include "sysdep.h"
22#include "disassemble.h"
23#include "safe-ctype.h"
24#include <assert.h>
25
26#ifdef ARCH_all
27#define ARCH_aarch64
28#define ARCH_alpha
29#define ARCH_arc
30#define ARCH_arm
31#define ARCH_avr
32#define ARCH_bfin
33#define ARCH_cr16
34#define ARCH_cris
35#define ARCH_crx
36#define ARCH_csky
37#define ARCH_d10v
38#define ARCH_d30v
39#define ARCH_dlx
40#define ARCH_bpf
41#define ARCH_epiphany
42#define ARCH_fr30
43#define ARCH_frv
44#define ARCH_ft32
45#define ARCH_h8300
46#define ARCH_hppa
47#define ARCH_i386
48#define ARCH_ia64
49#define ARCH_ip2k
50#define ARCH_iq2000
51#define ARCH_lm32
52#define ARCH_m32c
53#define ARCH_m32r
54#define ARCH_m68hc11
55#define ARCH_m68hc12
56#define ARCH_m68k
57#define ARCH_mcore
58#define ARCH_mep
59#define ARCH_metag
60#define ARCH_microblaze
61#define ARCH_mips
62#define ARCH_mmix
63#define ARCH_mn10200
64#define ARCH_mn10300
65#define ARCH_moxie
66#define ARCH_mt
67#define ARCH_msp430
68#define ARCH_nds32
69#define ARCH_nfp
70#define ARCH_nios2
71#define ARCH_ns32k
72#define ARCH_or1k
73#define ARCH_pdp11
74#define ARCH_pj
75#define ARCH_powerpc
76#define ARCH_pru
77#define ARCH_riscv
78#define ARCH_rs6000
79#define ARCH_rl78
80#define ARCH_rx
81#define ARCH_s12z
82#define ARCH_s390
83#define ARCH_score
84#define ARCH_sh
85#define ARCH_sparc
86#define ARCH_spu
87#define ARCH_tic30
88#define ARCH_tic4x
89#define ARCH_tic54x
90#define ARCH_tic6x
91#define ARCH_tic80
92#define ARCH_tilegx
93#define ARCH_tilepro
94#define ARCH_v850
95#define ARCH_vax
96#define ARCH_visium
97#define ARCH_wasm32
98#define ARCH_xstormy16
99#define ARCH_xc16x
100#define ARCH_xgate
101#define ARCH_xtensa
102#define ARCH_z80
103#define ARCH_z8k
104#endif
105
106#ifdef ARCH_m32c
107#include "m32c-desc.h"
108#endif
109
110#ifdef ARCH_bpf
111/* XXX this should be including bpf-desc.h instead of this hackery,
112 but at the moment it is not possible to include several CGEN
113 generated *-desc.h files simultaneously. To be fixed in
114 CGEN... */
115
116# ifdef ARCH_m32c
117enum epbf_isa_attr
118{
119 ISA_EBPFLE, ISA_EBPFBE, ISA_EBPFMAX
120};
121# else
122# include "bpf-desc.h"
123# define ISA_EBPFMAX ISA_MAX
124# endif
125#endif /* ARCH_bpf */
126
127disassembler_ftype
128disassembler (enum bfd_architecture a,
129 bfd_boolean big ATTRIBUTE_UNUSED,
130 unsigned long mach ATTRIBUTE_UNUSED,
131 bfd *abfd ATTRIBUTE_UNUSED)
132{
133 disassembler_ftype disassemble;
134
135 switch (a)
136 {
137 /* If you add a case to this table, also add it to the
138 ARCH_all definition right above this function. */
139#ifdef ARCH_aarch64
140 case bfd_arch_aarch64:
141 disassemble = print_insn_aarch64;
142 break;
143#endif
144#ifdef ARCH_alpha
145 case bfd_arch_alpha:
146 disassemble = print_insn_alpha;
147 break;
148#endif
149#ifdef ARCH_arc
150 case bfd_arch_arc:
151 disassemble = arc_get_disassembler (abfd);
152 break;
153#endif
154#ifdef ARCH_arm
155 case bfd_arch_arm:
156 if (big)
157 disassemble = print_insn_big_arm;
158 else
159 disassemble = print_insn_little_arm;
160 break;
161#endif
162#ifdef ARCH_avr
163 case bfd_arch_avr:
164 disassemble = print_insn_avr;
165 break;
166#endif
167#ifdef ARCH_bfin
168 case bfd_arch_bfin:
169 disassemble = print_insn_bfin;
170 break;
171#endif
172#ifdef ARCH_cr16
173 case bfd_arch_cr16:
174 disassemble = print_insn_cr16;
175 break;
176#endif
177#ifdef ARCH_cris
178 case bfd_arch_cris:
179 disassemble = cris_get_disassembler (abfd);
180 break;
181#endif
182#ifdef ARCH_crx
183 case bfd_arch_crx:
184 disassemble = print_insn_crx;
185 break;
186#endif
187#ifdef ARCH_csky
188 case bfd_arch_csky:
189 disassemble = csky_get_disassembler (abfd);
190 break;
191#endif
192
193#ifdef ARCH_d10v
194 case bfd_arch_d10v:
195 disassemble = print_insn_d10v;
196 break;
197#endif
198#ifdef ARCH_d30v
199 case bfd_arch_d30v:
200 disassemble = print_insn_d30v;
201 break;
202#endif
203#ifdef ARCH_dlx
204 case bfd_arch_dlx:
205 /* As far as I know we only handle big-endian DLX objects. */
206 disassemble = print_insn_dlx;
207 break;
208#endif
209#ifdef ARCH_h8300
210 case bfd_arch_h8300:
211 if (mach == bfd_mach_h8300h || mach == bfd_mach_h8300hn)
212 disassemble = print_insn_h8300h;
213 else if (mach == bfd_mach_h8300s
214 || mach == bfd_mach_h8300sn
215 || mach == bfd_mach_h8300sx
216 || mach == bfd_mach_h8300sxn)
217 disassemble = print_insn_h8300s;
218 else
219 disassemble = print_insn_h8300;
220 break;
221#endif
222#ifdef ARCH_hppa
223 case bfd_arch_hppa:
224 disassemble = print_insn_hppa;
225 break;
226#endif
227#ifdef ARCH_i386
228 case bfd_arch_i386:
229 case bfd_arch_iamcu:
230 case bfd_arch_l1om:
231 case bfd_arch_k1om:
232 disassemble = print_insn_i386;
233 break;
234#endif
235#ifdef ARCH_ia64
236 case bfd_arch_ia64:
237 disassemble = print_insn_ia64;
238 break;
239#endif
240#ifdef ARCH_ip2k
241 case bfd_arch_ip2k:
242 disassemble = print_insn_ip2k;
243 break;
244#endif
245#ifdef ARCH_bpf
246 case bfd_arch_bpf:
247 disassemble = print_insn_bpf;
248 break;
249#endif
250#ifdef ARCH_epiphany
251 case bfd_arch_epiphany:
252 disassemble = print_insn_epiphany;
253 break;
254#endif
255#ifdef ARCH_fr30
256 case bfd_arch_fr30:
257 disassemble = print_insn_fr30;
258 break;
259#endif
260#ifdef ARCH_lm32
261 case bfd_arch_lm32:
262 disassemble = print_insn_lm32;
263 break;
264#endif
265#ifdef ARCH_m32r
266 case bfd_arch_m32r:
267 disassemble = print_insn_m32r;
268 break;
269#endif
270#if defined(ARCH_m68hc11) || defined(ARCH_m68hc12) \
271 || defined(ARCH_9s12x) || defined(ARCH_m9s12xg)
272 case bfd_arch_m68hc11:
273 disassemble = print_insn_m68hc11;
274 break;
275 case bfd_arch_m68hc12:
276 disassemble = print_insn_m68hc12;
277 break;
278 case bfd_arch_m9s12x:
279 disassemble = print_insn_m9s12x;
280 break;
281 case bfd_arch_m9s12xg:
282 disassemble = print_insn_m9s12xg;
283 break;
284#endif
285#if defined(ARCH_s12z)
286 case bfd_arch_s12z:
287 disassemble = print_insn_s12z;
288 break;
289#endif
290#ifdef ARCH_m68k
291 case bfd_arch_m68k:
292 disassemble = print_insn_m68k;
293 break;
294#endif
295#ifdef ARCH_mt
296 case bfd_arch_mt:
297 disassemble = print_insn_mt;
298 break;
299#endif
300#ifdef ARCH_microblaze
301 case bfd_arch_microblaze:
302 disassemble = print_insn_microblaze;
303 break;
304#endif
305#ifdef ARCH_msp430
306 case bfd_arch_msp430:
307 disassemble = print_insn_msp430;
308 break;
309#endif
310#ifdef ARCH_nds32
311 case bfd_arch_nds32:
312 disassemble = print_insn_nds32;
313 break;
314#endif
315#ifdef ARCH_nfp
316 case bfd_arch_nfp:
317 disassemble = print_insn_nfp;
318 break;
319#endif
320#ifdef ARCH_ns32k
321 case bfd_arch_ns32k:
322 disassemble = print_insn_ns32k;
323 break;
324#endif
325#ifdef ARCH_mcore
326 case bfd_arch_mcore:
327 disassemble = print_insn_mcore;
328 break;
329#endif
330#ifdef ARCH_mep
331 case bfd_arch_mep:
332 disassemble = print_insn_mep;
333 break;
334#endif
335#ifdef ARCH_metag
336 case bfd_arch_metag:
337 disassemble = print_insn_metag;
338 break;
339#endif
340#ifdef ARCH_mips
341 case bfd_arch_mips:
342 if (big)
343 disassemble = print_insn_big_mips;
344 else
345 disassemble = print_insn_little_mips;
346 break;
347#endif
348#ifdef ARCH_mmix
349 case bfd_arch_mmix:
350 disassemble = print_insn_mmix;
351 break;
352#endif
353#ifdef ARCH_mn10200
354 case bfd_arch_mn10200:
355 disassemble = print_insn_mn10200;
356 break;
357#endif
358#ifdef ARCH_mn10300
359 case bfd_arch_mn10300:
360 disassemble = print_insn_mn10300;
361 break;
362#endif
363#ifdef ARCH_nios2
364 case bfd_arch_nios2:
365 if (big)
366 disassemble = print_insn_big_nios2;
367 else
368 disassemble = print_insn_little_nios2;
369 break;
370#endif
371#ifdef ARCH_or1k
372 case bfd_arch_or1k:
373 disassemble = print_insn_or1k;
374 break;
375#endif
376#ifdef ARCH_pdp11
377 case bfd_arch_pdp11:
378 disassemble = print_insn_pdp11;
379 break;
380#endif
381#ifdef ARCH_pj
382 case bfd_arch_pj:
383 disassemble = print_insn_pj;
384 break;
385#endif
386#ifdef ARCH_powerpc
387 case bfd_arch_powerpc:
388#endif
389#ifdef ARCH_rs6000
390 case bfd_arch_rs6000:
391#endif
392#if defined ARCH_powerpc || defined ARCH_rs6000
393 if (big)
394 disassemble = print_insn_big_powerpc;
395 else
396 disassemble = print_insn_little_powerpc;
397 break;
398#endif
399#ifdef ARCH_pru
400 case bfd_arch_pru:
401 disassemble = print_insn_pru;
402 break;
403#endif
404#ifdef ARCH_riscv
405 case bfd_arch_riscv:
406 disassemble = print_insn_riscv;
407 break;
408#endif
409#ifdef ARCH_rl78
410 case bfd_arch_rl78:
411 disassemble = rl78_get_disassembler (abfd);
412 break;
413#endif
414#ifdef ARCH_rx
415 case bfd_arch_rx:
416 disassemble = print_insn_rx;
417 break;
418#endif
419#ifdef ARCH_s390
420 case bfd_arch_s390:
421 disassemble = print_insn_s390;
422 break;
423#endif
424#ifdef ARCH_score
425 case bfd_arch_score:
426 if (big)
427 disassemble = print_insn_big_score;
428 else
429 disassemble = print_insn_little_score;
430 break;
431#endif
432#ifdef ARCH_sh
433 case bfd_arch_sh:
434 disassemble = print_insn_sh;
435 break;
436#endif
437#ifdef ARCH_sparc
438 case bfd_arch_sparc:
439 disassemble = print_insn_sparc;
440 break;
441#endif
442#ifdef ARCH_spu
443 case bfd_arch_spu:
444 disassemble = print_insn_spu;
445 break;
446#endif
447#ifdef ARCH_tic30
448 case bfd_arch_tic30:
449 disassemble = print_insn_tic30;
450 break;
451#endif
452#ifdef ARCH_tic4x
453 case bfd_arch_tic4x:
454 disassemble = print_insn_tic4x;
455 break;
456#endif
457#ifdef ARCH_tic54x
458 case bfd_arch_tic54x:
459 disassemble = print_insn_tic54x;
460 break;
461#endif
462#ifdef ARCH_tic6x
463 case bfd_arch_tic6x:
464 disassemble = print_insn_tic6x;
465 break;
466#endif
467#ifdef ARCH_tic80
468 case bfd_arch_tic80:
469 disassemble = print_insn_tic80;
470 break;
471#endif
472#ifdef ARCH_ft32
473 case bfd_arch_ft32:
474 disassemble = print_insn_ft32;
475 break;
476#endif
477#ifdef ARCH_v850
478 case bfd_arch_v850:
479 case bfd_arch_v850_rh850:
480 disassemble = print_insn_v850;
481 break;
482#endif
483#ifdef ARCH_wasm32
484 case bfd_arch_wasm32:
485 disassemble = print_insn_wasm32;
486 break;
487#endif
488#ifdef ARCH_xgate
489 case bfd_arch_xgate:
490 disassemble = print_insn_xgate;
491 break;
492#endif
493#ifdef ARCH_xstormy16
494 case bfd_arch_xstormy16:
495 disassemble = print_insn_xstormy16;
496 break;
497#endif
498#ifdef ARCH_xc16x
499 case bfd_arch_xc16x:
500 disassemble = print_insn_xc16x;
501 break;
502#endif
503#ifdef ARCH_xtensa
504 case bfd_arch_xtensa:
505 disassemble = print_insn_xtensa;
506 break;
507#endif
508#ifdef ARCH_z80
509 case bfd_arch_z80:
510 disassemble = print_insn_z80;
511 break;
512#endif
513#ifdef ARCH_z8k
514 case bfd_arch_z8k:
515 if (mach == bfd_mach_z8001)
516 disassemble = print_insn_z8001;
517 else
518 disassemble = print_insn_z8002;
519 break;
520#endif
521#ifdef ARCH_vax
522 case bfd_arch_vax:
523 disassemble = print_insn_vax;
524 break;
525#endif
526#ifdef ARCH_visium
527 case bfd_arch_visium:
528 disassemble = print_insn_visium;
529 break;
530#endif
531#ifdef ARCH_frv
532 case bfd_arch_frv:
533 disassemble = print_insn_frv;
534 break;
535#endif
536#ifdef ARCH_moxie
537 case bfd_arch_moxie:
538 disassemble = print_insn_moxie;
539 break;
540#endif
541#ifdef ARCH_iq2000
542 case bfd_arch_iq2000:
543 disassemble = print_insn_iq2000;
544 break;
545#endif
546#ifdef ARCH_m32c
547 case bfd_arch_m32c:
548 disassemble = print_insn_m32c;
549 break;
550#endif
551#ifdef ARCH_tilegx
552 case bfd_arch_tilegx:
553 disassemble = print_insn_tilegx;
554 break;
555#endif
556#ifdef ARCH_tilepro
557 case bfd_arch_tilepro:
558 disassemble = print_insn_tilepro;
559 break;
560#endif
561 default:
562 return 0;
563 }
564 return disassemble;
565}
566
567void
568disassembler_usage (FILE *stream ATTRIBUTE_UNUSED)
569{
570#ifdef ARCH_aarch64
571 print_aarch64_disassembler_options (stream);
572#endif
573#ifdef ARCH_arc
574 print_arc_disassembler_options (stream);
575#endif
576#ifdef ARCH_arm
577 print_arm_disassembler_options (stream);
578#endif
579#ifdef ARCH_mips
580 print_mips_disassembler_options (stream);
581#endif
582#ifdef ARCH_nfp
583 print_nfp_disassembler_options (stream);
584#endif
585#ifdef ARCH_powerpc
586 print_ppc_disassembler_options (stream);
587#endif
588#ifdef ARCH_riscv
589 print_riscv_disassembler_options (stream);
590#endif
591#ifdef ARCH_i386
592 print_i386_disassembler_options (stream);
593#endif
594#ifdef ARCH_s390
595 print_s390_disassembler_options (stream);
596#endif
597#ifdef ARCH_wasm32
598 print_wasm32_disassembler_options (stream);
599#endif
600
601 return;
602}
603
604void
605disassemble_init_for_target (struct disassemble_info * info)
606{
607 if (info == NULL)
608 return;
609
610 switch (info->arch)
611 {
612#ifdef ARCH_aarch64
613 case bfd_arch_aarch64:
614 info->symbol_is_valid = aarch64_symbol_is_valid;
615 info->disassembler_needs_relocs = TRUE;
616 break;
617#endif
618#ifdef ARCH_arm
619 case bfd_arch_arm:
620 info->symbol_is_valid = arm_symbol_is_valid;
621 info->disassembler_needs_relocs = TRUE;
622 break;
623#endif
624#ifdef ARCH_csky
625 case bfd_arch_csky:
626 info->symbol_is_valid = csky_symbol_is_valid;
627 info->disassembler_needs_relocs = TRUE;
628 break;
629#endif
630
631#ifdef ARCH_ia64
632 case bfd_arch_ia64:
633 info->skip_zeroes = 16;
634 break;
635#endif
636#ifdef ARCH_tic4x
637 case bfd_arch_tic4x:
638 info->skip_zeroes = 32;
639 break;
640#endif
641#ifdef ARCH_mep
642 case bfd_arch_mep:
643 info->skip_zeroes = 256;
644 info->skip_zeroes_at_end = 0;
645 break;
646#endif
647#ifdef ARCH_metag
648 case bfd_arch_metag:
649 info->disassembler_needs_relocs = TRUE;
650 break;
651#endif
652#ifdef ARCH_m32c
653 case bfd_arch_m32c:
654 /* This processor in fact is little endian. The value set here
655 reflects the way opcodes are written in the cgen description. */
656 info->endian = BFD_ENDIAN_BIG;
657 if (!info->private_data)
658 {
659 info->private_data = cgen_bitset_create (ISA_MAX);
660 if (info->mach == bfd_mach_m16c)
661 cgen_bitset_set (info->private_data, ISA_M16C);
662 else
663 cgen_bitset_set (info->private_data, ISA_M32C);
664 }
665 break;
666#endif
667#ifdef ARCH_bpf
668 case bfd_arch_bpf:
669 if (!info->private_data)
670 {
671 info->private_data = cgen_bitset_create (ISA_EBPFMAX);
672 if (info->endian == BFD_ENDIAN_BIG)
673 cgen_bitset_set (info->private_data, ISA_EBPFBE);
674 else
675 cgen_bitset_set (info->private_data, ISA_EBPFLE);
676 }
677 break;
678#endif
679#ifdef ARCH_pru
680 case bfd_arch_pru:
681 info->disassembler_needs_relocs = TRUE;
682 break;
683#endif
684#ifdef ARCH_powerpc
685 case bfd_arch_powerpc:
686#endif
687#ifdef ARCH_rs6000
688 case bfd_arch_rs6000:
689#endif
690#if defined (ARCH_powerpc) || defined (ARCH_rs6000)
691 disassemble_init_powerpc (info);
692 break;
693#endif
694#ifdef ARCH_riscv
695 case bfd_arch_riscv:
696 info->symbol_is_valid = riscv_symbol_is_valid;
697 break;
698#endif
699#ifdef ARCH_wasm32
700 case bfd_arch_wasm32:
701 disassemble_init_wasm32 (info);
702 break;
703#endif
704#ifdef ARCH_s390
705 case bfd_arch_s390:
706 disassemble_init_s390 (info);
707 break;
708#endif
709#ifdef ARCH_nds32
710 case bfd_arch_nds32:
711 disassemble_init_nds32 (info);
712 break;
713 #endif
714 default:
715 break;
716 }
717}
718
719void
720disassemble_free_target (struct disassemble_info *info)
721{
722 if (info == NULL)
723 return;
724
725 switch (info->arch)
726 {
727 default:
728 return;
729
730#ifdef ARCH_bpf
731 case bfd_arch_bpf:
732#endif
733#ifdef ARCH_m32c
734 case bfd_arch_m32c:
735#endif
736#if defined ARCH_bpf || defined ARCH_m32c
737 if (info->private_data)
738 {
739 CGEN_BITSET *mask = info->private_data;
740 free (mask->bits);
741 }
742 break;
743#endif
744
745#ifdef ARCH_arc
746 case bfd_arch_arc:
747 break;
748#endif
749#ifdef ARCH_cris
750 case bfd_arch_cris:
751 break;
752#endif
753#ifdef ARCH_mmix
754 case bfd_arch_mmix:
755 break;
756#endif
757#ifdef ARCH_nfp
758 case bfd_arch_nfp:
759 break;
760#endif
761#ifdef ARCH_powerpc
762 case bfd_arch_powerpc:
763 break;
764#endif
765#ifdef ARCH_riscv
766 case bfd_arch_riscv:
767 break;
768#endif
769#ifdef ARCH_rs6000
770 case bfd_arch_rs6000:
771 break;
772#endif
773 }
774
775 free (info->private_data);
776}
777
778/* Remove whitespace and consecutive commas from OPTIONS. */
779
780char *
781remove_whitespace_and_extra_commas (char *options)
782{
783 char *str;
784 size_t i, len;
785
786 if (options == NULL)
787 return NULL;
788
789 /* Strip off all trailing whitespace and commas. */
790 for (len = strlen (options); len > 0; len--)
791 {
792 if (!ISSPACE (options[len - 1]) && options[len - 1] != ',')
793 break;
794 options[len - 1] = '\0';
795 }
796
797 /* Convert all remaining whitespace to commas. */
798 for (i = 0; options[i] != '\0'; i++)
799 if (ISSPACE (options[i]))
800 options[i] = ',';
801
802 /* Remove consecutive commas. */
803 for (str = options; *str != '\0'; str++)
804 if (*str == ',' && (*(str + 1) == ',' || str == options))
805 {
806 char *next = str + 1;
807 while (*next == ',')
808 next++;
809 len = strlen (next);
810 if (str != options)
811 str++;
812 memmove (str, next, len);
813 next[len - (size_t)(next - str)] = '\0';
814 }
815 return (strlen (options) != 0) ? options : NULL;
816}
817
818/* Like STRCMP, but treat ',' the same as '\0' so that we match
819 strings like "foobar" against "foobar,xxyyzz,...". */
820
821int
822disassembler_options_cmp (const char *s1, const char *s2)
823{
824 unsigned char c1, c2;
825
826 do
827 {
828 c1 = (unsigned char) *s1++;
829 if (c1 == ',')
830 c1 = '\0';
831 c2 = (unsigned char) *s2++;
832 if (c2 == ',')
833 c2 = '\0';
834 if (c1 == '\0')
835 return c1 - c2;
836 }
837 while (c1 == c2);
838
839 return c1 - c2;
840}
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