2004-12-05 Randolph Chung <tausq@debian.org>
[deliverable/binutils-gdb.git] / gdb / arch-utils.c
1 /* Dynamic architecture support for GDB, the GNU debugger.
2
3 Copyright 1998, 1999, 2000, 2001, 2002, 2003, 2004 Free Software
4 Foundation, Inc.
5
6 This file is part of GDB.
7
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2 of the License, or
11 (at your option) any later version.
12
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for 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,
21 Boston, MA 02111-1307, USA. */
22
23 #include "defs.h"
24
25 #include "arch-utils.h"
26 #include "buildsym.h"
27 #include "gdbcmd.h"
28 #include "inferior.h" /* enum CALL_DUMMY_LOCATION et.al. */
29 #include "gdb_string.h"
30 #include "regcache.h"
31 #include "gdb_assert.h"
32 #include "sim-regno.h"
33 #include "gdbcore.h"
34 #include "osabi.h"
35
36 #include "version.h"
37
38 #include "floatformat.h"
39
40 /* Implementation of extract return value that grubs around in the
41 register cache. */
42 void
43 legacy_extract_return_value (struct type *type, struct regcache *regcache,
44 void *valbuf)
45 {
46 char *registers = deprecated_grub_regcache_for_registers (regcache);
47 bfd_byte *buf = valbuf;
48 DEPRECATED_EXTRACT_RETURN_VALUE (type, registers, buf); /* OK */
49 }
50
51 /* Implementation of store return value that grubs the register cache.
52 Takes a local copy of the buffer to avoid const problems. */
53 void
54 legacy_store_return_value (struct type *type, struct regcache *regcache,
55 const void *buf)
56 {
57 bfd_byte *b = alloca (TYPE_LENGTH (type));
58 gdb_assert (regcache == current_regcache);
59 memcpy (b, buf, TYPE_LENGTH (type));
60 DEPRECATED_STORE_RETURN_VALUE (type, b);
61 }
62
63 int
64 always_use_struct_convention (int gcc_p, struct type *value_type)
65 {
66 return 1;
67 }
68
69 enum return_value_convention
70 legacy_return_value (struct gdbarch *gdbarch, struct type *valtype,
71 struct regcache *regcache, void *readbuf,
72 const void *writebuf)
73 {
74 /* NOTE: cagney/2004-06-13: The gcc_p parameter to
75 USE_STRUCT_CONVENTION isn't used. */
76 int struct_return = ((TYPE_CODE (valtype) == TYPE_CODE_STRUCT
77 || TYPE_CODE (valtype) == TYPE_CODE_UNION
78 || TYPE_CODE (valtype) == TYPE_CODE_ARRAY)
79 && DEPRECATED_USE_STRUCT_CONVENTION (0, valtype));
80
81 if (writebuf != NULL)
82 {
83 gdb_assert (!struct_return);
84 /* NOTE: cagney/2004-06-13: See stack.c:return_command. Old
85 architectures don't expect STORE_RETURN_VALUE to handle small
86 structures. Should not be called with such types. */
87 gdb_assert (TYPE_CODE (valtype) != TYPE_CODE_STRUCT
88 && TYPE_CODE (valtype) != TYPE_CODE_UNION);
89 STORE_RETURN_VALUE (valtype, regcache, writebuf);
90 }
91
92 if (readbuf != NULL)
93 {
94 gdb_assert (!struct_return);
95 EXTRACT_RETURN_VALUE (valtype, regcache, readbuf);
96 }
97
98 if (struct_return)
99 return RETURN_VALUE_STRUCT_CONVENTION;
100 else
101 return RETURN_VALUE_REGISTER_CONVENTION;
102 }
103
104 int
105 legacy_register_sim_regno (int regnum)
106 {
107 /* Only makes sense to supply raw registers. */
108 gdb_assert (regnum >= 0 && regnum < NUM_REGS);
109 /* NOTE: cagney/2002-05-13: The old code did it this way and it is
110 suspected that some GDB/SIM combinations may rely on this
111 behavour. The default should be one2one_register_sim_regno
112 (below). */
113 if (REGISTER_NAME (regnum) != NULL
114 && REGISTER_NAME (regnum)[0] != '\0')
115 return regnum;
116 else
117 return LEGACY_SIM_REGNO_IGNORE;
118 }
119
120 CORE_ADDR
121 generic_skip_trampoline_code (CORE_ADDR pc)
122 {
123 return 0;
124 }
125
126 CORE_ADDR
127 generic_skip_solib_resolver (struct gdbarch *gdbarch, CORE_ADDR pc)
128 {
129 return 0;
130 }
131
132 int
133 generic_in_solib_return_trampoline (CORE_ADDR pc, char *name)
134 {
135 return 0;
136 }
137
138 int
139 generic_in_function_epilogue_p (struct gdbarch *gdbarch, CORE_ADDR pc)
140 {
141 return 0;
142 }
143
144 void
145 generic_remote_translate_xfer_address (struct gdbarch *gdbarch,
146 struct regcache *regcache,
147 CORE_ADDR gdb_addr, int gdb_len,
148 CORE_ADDR * rem_addr, int *rem_len)
149 {
150 *rem_addr = gdb_addr;
151 *rem_len = gdb_len;
152 }
153
154 /* Helper functions for INNER_THAN */
155
156 int
157 core_addr_lessthan (CORE_ADDR lhs, CORE_ADDR rhs)
158 {
159 return (lhs < rhs);
160 }
161
162 int
163 core_addr_greaterthan (CORE_ADDR lhs, CORE_ADDR rhs)
164 {
165 return (lhs > rhs);
166 }
167
168
169 /* Helper functions for TARGET_{FLOAT,DOUBLE}_FORMAT */
170
171 const struct floatformat *
172 default_float_format (struct gdbarch *gdbarch)
173 {
174 int byte_order = gdbarch_byte_order (gdbarch);
175 switch (byte_order)
176 {
177 case BFD_ENDIAN_BIG:
178 return &floatformat_ieee_single_big;
179 case BFD_ENDIAN_LITTLE:
180 return &floatformat_ieee_single_little;
181 default:
182 internal_error (__FILE__, __LINE__,
183 "default_float_format: bad byte order");
184 }
185 }
186
187
188 const struct floatformat *
189 default_double_format (struct gdbarch *gdbarch)
190 {
191 int byte_order = gdbarch_byte_order (gdbarch);
192 switch (byte_order)
193 {
194 case BFD_ENDIAN_BIG:
195 return &floatformat_ieee_double_big;
196 case BFD_ENDIAN_LITTLE:
197 return &floatformat_ieee_double_little;
198 default:
199 internal_error (__FILE__, __LINE__,
200 "default_double_format: bad byte order");
201 }
202 }
203
204 /* Misc helper functions for targets. */
205
206 CORE_ADDR
207 core_addr_identity (CORE_ADDR addr)
208 {
209 return addr;
210 }
211
212 CORE_ADDR
213 convert_from_func_ptr_addr_identity (struct gdbarch *gdbarch, CORE_ADDR addr,
214 struct target_ops *targ)
215 {
216 return addr;
217 }
218
219 int
220 no_op_reg_to_regnum (int reg)
221 {
222 return reg;
223 }
224
225 void
226 default_elf_make_msymbol_special (asymbol *sym, struct minimal_symbol *msym)
227 {
228 return;
229 }
230
231 void
232 default_coff_make_msymbol_special (int val, struct minimal_symbol *msym)
233 {
234 return;
235 }
236
237 int
238 cannot_register_not (int regnum)
239 {
240 return 0;
241 }
242
243 /* Legacy version of target_virtual_frame_pointer(). Assumes that
244 there is an DEPRECATED_FP_REGNUM and that it is the same, cooked or
245 raw. */
246
247 void
248 legacy_virtual_frame_pointer (CORE_ADDR pc,
249 int *frame_regnum,
250 LONGEST *frame_offset)
251 {
252 /* FIXME: cagney/2002-09-13: This code is used when identifying the
253 frame pointer of the current PC. It is assuming that a single
254 register and an offset can determine this. I think it should
255 instead generate a byte code expression as that would work better
256 with things like Dwarf2's CFI. */
257 if (DEPRECATED_FP_REGNUM >= 0 && DEPRECATED_FP_REGNUM < NUM_REGS)
258 *frame_regnum = DEPRECATED_FP_REGNUM;
259 else if (SP_REGNUM >= 0 && SP_REGNUM < NUM_REGS)
260 *frame_regnum = SP_REGNUM;
261 else
262 /* Should this be an internal error? I guess so, it is reflecting
263 an architectural limitation in the current design. */
264 internal_error (__FILE__, __LINE__, "No virtual frame pointer available");
265 *frame_offset = 0;
266 }
267
268 /* Assume the world is sane, every register's virtual and real size
269 is identical. */
270
271 int
272 generic_register_size (int regnum)
273 {
274 gdb_assert (regnum >= 0 && regnum < NUM_REGS + NUM_PSEUDO_REGS);
275 return TYPE_LENGTH (gdbarch_register_type (current_gdbarch, regnum));
276 }
277
278 /* Assume all registers are adjacent. */
279
280 int
281 generic_register_byte (int regnum)
282 {
283 int byte;
284 int i;
285 gdb_assert (regnum >= 0 && regnum < NUM_REGS + NUM_PSEUDO_REGS);
286 byte = 0;
287 for (i = 0; i < regnum; i++)
288 {
289 byte += generic_register_size (i);
290 }
291 return byte;
292 }
293
294 \f
295 int
296 legacy_pc_in_sigtramp (CORE_ADDR pc, char *name)
297 {
298 #if defined (DEPRECATED_IN_SIGTRAMP)
299 return DEPRECATED_IN_SIGTRAMP (pc, name);
300 #else
301 return name && strcmp ("_sigtramp", name) == 0;
302 #endif
303 }
304
305 int
306 generic_convert_register_p (int regnum, struct type *type)
307 {
308 return 0;
309 }
310
311 int
312 default_stabs_argument_has_addr (struct gdbarch *gdbarch, struct type *type)
313 {
314 if (DEPRECATED_REG_STRUCT_HAS_ADDR_P ()
315 && DEPRECATED_REG_STRUCT_HAS_ADDR (processing_gcc_compilation, type))
316 {
317 CHECK_TYPEDEF (type);
318
319 return (TYPE_CODE (type) == TYPE_CODE_STRUCT
320 || TYPE_CODE (type) == TYPE_CODE_UNION
321 || TYPE_CODE (type) == TYPE_CODE_SET
322 || TYPE_CODE (type) == TYPE_CODE_BITSTRING);
323 }
324
325 return 0;
326 }
327
328 int
329 generic_instruction_nullified (struct gdbarch *gdbarch,
330 struct regcache *regcache)
331 {
332 return 0;
333 }
334
335 \f
336 /* Functions to manipulate the endianness of the target. */
337
338 /* ``target_byte_order'' is only used when non- multi-arch.
339 Multi-arch targets obtain the current byte order using the
340 TARGET_BYTE_ORDER gdbarch method.
341
342 The choice of initial value is entirely arbitrary. During startup,
343 the function initialize_current_architecture() updates this value
344 based on default byte-order information extracted from BFD. */
345 static int target_byte_order = BFD_ENDIAN_BIG;
346 static int target_byte_order_auto = 1;
347
348 enum bfd_endian
349 selected_byte_order (void)
350 {
351 if (target_byte_order_auto)
352 return BFD_ENDIAN_UNKNOWN;
353 else
354 return target_byte_order;
355 }
356
357 static const char endian_big[] = "big";
358 static const char endian_little[] = "little";
359 static const char endian_auto[] = "auto";
360 static const char *endian_enum[] =
361 {
362 endian_big,
363 endian_little,
364 endian_auto,
365 NULL,
366 };
367 static const char *set_endian_string;
368
369 /* Called by ``show endian''. */
370
371 static void
372 show_endian (char *args, int from_tty)
373 {
374 if (target_byte_order_auto)
375 printf_unfiltered ("The target endianness is set automatically (currently %s endian)\n",
376 (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG ? "big" : "little"));
377 else
378 printf_unfiltered ("The target is assumed to be %s endian\n",
379 (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG ? "big" : "little"));
380 }
381
382 static void
383 set_endian (char *ignore_args, int from_tty, struct cmd_list_element *c)
384 {
385 if (set_endian_string == endian_auto)
386 {
387 target_byte_order_auto = 1;
388 }
389 else if (set_endian_string == endian_little)
390 {
391 struct gdbarch_info info;
392 target_byte_order_auto = 0;
393 gdbarch_info_init (&info);
394 info.byte_order = BFD_ENDIAN_LITTLE;
395 if (! gdbarch_update_p (info))
396 printf_unfiltered ("Little endian target not supported by GDB\n");
397 }
398 else if (set_endian_string == endian_big)
399 {
400 struct gdbarch_info info;
401 target_byte_order_auto = 0;
402 gdbarch_info_init (&info);
403 info.byte_order = BFD_ENDIAN_BIG;
404 if (! gdbarch_update_p (info))
405 printf_unfiltered ("Big endian target not supported by GDB\n");
406 }
407 else
408 internal_error (__FILE__, __LINE__,
409 "set_endian: bad value");
410 show_endian (NULL, from_tty);
411 }
412
413 /* Functions to manipulate the architecture of the target */
414
415 enum set_arch { set_arch_auto, set_arch_manual };
416
417 static int target_architecture_auto = 1;
418
419 static const char *set_architecture_string;
420
421 const char *
422 selected_architecture_name (void)
423 {
424 if (target_architecture_auto)
425 return NULL;
426 else
427 return set_architecture_string;
428 }
429
430 /* Called if the user enters ``show architecture'' without an
431 argument. */
432
433 static void
434 show_architecture (char *args, int from_tty)
435 {
436 const char *arch;
437 arch = TARGET_ARCHITECTURE->printable_name;
438 if (target_architecture_auto)
439 printf_filtered ("The target architecture is set automatically (currently %s)\n", arch);
440 else
441 printf_filtered ("The target architecture is assumed to be %s\n", arch);
442 }
443
444
445 /* Called if the user enters ``set architecture'' with or without an
446 argument. */
447
448 static void
449 set_architecture (char *ignore_args, int from_tty, struct cmd_list_element *c)
450 {
451 if (strcmp (set_architecture_string, "auto") == 0)
452 {
453 target_architecture_auto = 1;
454 }
455 else
456 {
457 struct gdbarch_info info;
458 gdbarch_info_init (&info);
459 info.bfd_arch_info = bfd_scan_arch (set_architecture_string);
460 if (info.bfd_arch_info == NULL)
461 internal_error (__FILE__, __LINE__,
462 "set_architecture: bfd_scan_arch failed");
463 if (gdbarch_update_p (info))
464 target_architecture_auto = 0;
465 else
466 printf_unfiltered ("Architecture `%s' not recognized.\n",
467 set_architecture_string);
468 }
469 show_architecture (NULL, from_tty);
470 }
471
472 /* Try to select a global architecture that matches "info". Return
473 non-zero if the attempt succeds. */
474 int
475 gdbarch_update_p (struct gdbarch_info info)
476 {
477 struct gdbarch *new_gdbarch = gdbarch_find_by_info (info);
478
479 /* If there no architecture by that name, reject the request. */
480 if (new_gdbarch == NULL)
481 {
482 if (gdbarch_debug)
483 fprintf_unfiltered (gdb_stdlog, "gdbarch_update_p: "
484 "Architecture not found\n");
485 return 0;
486 }
487
488 /* If it is the same old architecture, accept the request (but don't
489 swap anything). */
490 if (new_gdbarch == current_gdbarch)
491 {
492 if (gdbarch_debug)
493 fprintf_unfiltered (gdb_stdlog, "gdbarch_update_p: "
494 "Architecture 0x%08lx (%s) unchanged\n",
495 (long) new_gdbarch,
496 gdbarch_bfd_arch_info (new_gdbarch)->printable_name);
497 return 1;
498 }
499
500 /* It's a new architecture, swap it in. */
501 if (gdbarch_debug)
502 fprintf_unfiltered (gdb_stdlog, "gdbarch_update_p: "
503 "New architecture 0x%08lx (%s) selected\n",
504 (long) new_gdbarch,
505 gdbarch_bfd_arch_info (new_gdbarch)->printable_name);
506 deprecated_current_gdbarch_select_hack (new_gdbarch);
507
508 return 1;
509 }
510
511 /* Return the architecture for ABFD. If no suitable architecture
512 could be find, return NULL. */
513
514 struct gdbarch *
515 gdbarch_from_bfd (bfd *abfd)
516 {
517 struct gdbarch *old_gdbarch = current_gdbarch;
518 struct gdbarch *new_gdbarch;
519 struct gdbarch_info info;
520
521 gdbarch_info_init (&info);
522 info.abfd = abfd;
523 return gdbarch_find_by_info (info);
524 }
525
526 /* Set the dynamic target-system-dependent parameters (architecture,
527 byte-order) using information found in the BFD */
528
529 void
530 set_gdbarch_from_file (bfd *abfd)
531 {
532 struct gdbarch *gdbarch;
533
534 gdbarch = gdbarch_from_bfd (abfd);
535 if (gdbarch == NULL)
536 error ("Architecture of file not recognized.\n");
537 deprecated_current_gdbarch_select_hack (gdbarch);
538 }
539
540 /* Initialize the current architecture. Update the ``set
541 architecture'' command so that it specifies a list of valid
542 architectures. */
543
544 #ifdef DEFAULT_BFD_ARCH
545 extern const bfd_arch_info_type DEFAULT_BFD_ARCH;
546 static const bfd_arch_info_type *default_bfd_arch = &DEFAULT_BFD_ARCH;
547 #else
548 static const bfd_arch_info_type *default_bfd_arch;
549 #endif
550
551 #ifdef DEFAULT_BFD_VEC
552 extern const bfd_target DEFAULT_BFD_VEC;
553 static const bfd_target *default_bfd_vec = &DEFAULT_BFD_VEC;
554 #else
555 static const bfd_target *default_bfd_vec;
556 #endif
557
558 void
559 initialize_current_architecture (void)
560 {
561 const char **arches = gdbarch_printable_names ();
562
563 /* determine a default architecture and byte order. */
564 struct gdbarch_info info;
565 gdbarch_info_init (&info);
566
567 /* Find a default architecture. */
568 if (info.bfd_arch_info == NULL
569 && default_bfd_arch != NULL)
570 info.bfd_arch_info = default_bfd_arch;
571 if (info.bfd_arch_info == NULL)
572 {
573 /* Choose the architecture by taking the first one
574 alphabetically. */
575 const char *chosen = arches[0];
576 const char **arch;
577 for (arch = arches; *arch != NULL; arch++)
578 {
579 if (strcmp (*arch, chosen) < 0)
580 chosen = *arch;
581 }
582 if (chosen == NULL)
583 internal_error (__FILE__, __LINE__,
584 "initialize_current_architecture: No arch");
585 info.bfd_arch_info = bfd_scan_arch (chosen);
586 if (info.bfd_arch_info == NULL)
587 internal_error (__FILE__, __LINE__,
588 "initialize_current_architecture: Arch not found");
589 }
590
591 /* Take several guesses at a byte order. */
592 if (info.byte_order == BFD_ENDIAN_UNKNOWN
593 && default_bfd_vec != NULL)
594 {
595 /* Extract BFD's default vector's byte order. */
596 switch (default_bfd_vec->byteorder)
597 {
598 case BFD_ENDIAN_BIG:
599 info.byte_order = BFD_ENDIAN_BIG;
600 break;
601 case BFD_ENDIAN_LITTLE:
602 info.byte_order = BFD_ENDIAN_LITTLE;
603 break;
604 default:
605 break;
606 }
607 }
608 if (info.byte_order == BFD_ENDIAN_UNKNOWN)
609 {
610 /* look for ``*el-*'' in the target name. */
611 const char *chp;
612 chp = strchr (target_name, '-');
613 if (chp != NULL
614 && chp - 2 >= target_name
615 && strncmp (chp - 2, "el", 2) == 0)
616 info.byte_order = BFD_ENDIAN_LITTLE;
617 }
618 if (info.byte_order == BFD_ENDIAN_UNKNOWN)
619 {
620 /* Wire it to big-endian!!! */
621 info.byte_order = BFD_ENDIAN_BIG;
622 }
623
624 if (! gdbarch_update_p (info))
625 internal_error (__FILE__, __LINE__,
626 "initialize_current_architecture: Selection of initial architecture failed");
627
628 /* Create the ``set architecture'' command appending ``auto'' to the
629 list of architectures. */
630 {
631 struct cmd_list_element *c;
632 /* Append ``auto''. */
633 int nr;
634 for (nr = 0; arches[nr] != NULL; nr++);
635 arches = xrealloc (arches, sizeof (char*) * (nr + 2));
636 arches[nr + 0] = "auto";
637 arches[nr + 1] = NULL;
638 /* FIXME: add_set_enum_cmd() uses an array of ``char *'' instead
639 of ``const char *''. We just happen to know that the casts are
640 safe. */
641 c = add_set_enum_cmd ("architecture", class_support,
642 arches, &set_architecture_string,
643 "Set architecture of target.",
644 &setlist);
645 set_cmd_sfunc (c, set_architecture);
646 add_alias_cmd ("processor", "architecture", class_support, 1, &setlist);
647 /* Don't use set_from_show - need to print both auto/manual and
648 current setting. */
649 add_cmd ("architecture", class_support, show_architecture,
650 "Show the current target architecture", &showlist);
651 }
652 }
653
654
655 /* Initialize a gdbarch info to values that will be automatically
656 overridden. Note: Originally, this ``struct info'' was initialized
657 using memset(0). Unfortunately, that ran into problems, namely
658 BFD_ENDIAN_BIG is zero. An explicit initialization function that
659 can explicitly set each field to a well defined value is used. */
660
661 void
662 gdbarch_info_init (struct gdbarch_info *info)
663 {
664 memset (info, 0, sizeof (struct gdbarch_info));
665 info->byte_order = BFD_ENDIAN_UNKNOWN;
666 info->osabi = GDB_OSABI_UNINITIALIZED;
667 }
668
669 /* Similar to init, but this time fill in the blanks. Information is
670 obtained from the specified architecture, global "set ..." options,
671 and explicitly initialized INFO fields. */
672
673 void
674 gdbarch_info_fill (struct gdbarch *gdbarch, struct gdbarch_info *info)
675 {
676 /* "(gdb) set architecture ...". */
677 if (info->bfd_arch_info == NULL
678 && !target_architecture_auto
679 && gdbarch != NULL)
680 info->bfd_arch_info = gdbarch_bfd_arch_info (gdbarch);
681 if (info->bfd_arch_info == NULL
682 && info->abfd != NULL
683 && bfd_get_arch (info->abfd) != bfd_arch_unknown
684 && bfd_get_arch (info->abfd) != bfd_arch_obscure)
685 info->bfd_arch_info = bfd_get_arch_info (info->abfd);
686 if (info->bfd_arch_info == NULL
687 && gdbarch != NULL)
688 info->bfd_arch_info = gdbarch_bfd_arch_info (gdbarch);
689
690 /* "(gdb) set byte-order ...". */
691 if (info->byte_order == BFD_ENDIAN_UNKNOWN
692 && !target_byte_order_auto
693 && gdbarch != NULL)
694 info->byte_order = gdbarch_byte_order (gdbarch);
695 /* From the INFO struct. */
696 if (info->byte_order == BFD_ENDIAN_UNKNOWN
697 && info->abfd != NULL)
698 info->byte_order = (bfd_big_endian (info->abfd) ? BFD_ENDIAN_BIG
699 : bfd_little_endian (info->abfd) ? BFD_ENDIAN_LITTLE
700 : BFD_ENDIAN_UNKNOWN);
701 /* From the current target. */
702 if (info->byte_order == BFD_ENDIAN_UNKNOWN
703 && gdbarch != NULL)
704 info->byte_order = gdbarch_byte_order (gdbarch);
705
706 /* "(gdb) set osabi ...". Handled by gdbarch_lookup_osabi. */
707 if (info->osabi == GDB_OSABI_UNINITIALIZED)
708 info->osabi = gdbarch_lookup_osabi (info->abfd);
709 if (info->osabi == GDB_OSABI_UNINITIALIZED
710 && gdbarch != NULL)
711 info->osabi = gdbarch_osabi (gdbarch);
712
713 /* Must have at least filled in the architecture. */
714 gdb_assert (info->bfd_arch_info != NULL);
715 }
716
717 /* */
718
719 extern initialize_file_ftype _initialize_gdbarch_utils; /* -Wmissing-prototypes */
720
721 void
722 _initialize_gdbarch_utils (void)
723 {
724 struct cmd_list_element *c;
725 c = add_set_enum_cmd ("endian", class_support,
726 endian_enum, &set_endian_string,
727 "Set endianness of target.",
728 &setlist);
729 set_cmd_sfunc (c, set_endian);
730 /* Don't use set_from_show - need to print both auto/manual and
731 current setting. */
732 add_cmd ("endian", class_support, show_endian,
733 "Show the current byte-order", &showlist);
734 }
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