gdb/arch-utils.c

   1 /* Dynamic architecture support for GDB, the GNU debugger.
   2    Copyright 1998, 1999, 2000, 2001 Free Software Foundation, Inc.
   3
   4    This file is part of GDB.
   5
   6    This program 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 2 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., 59 Temple Place - Suite 330,
  19    Boston, MA 02111-1307, USA.  */
  20
  21 #include "defs.h"
  22
  23 #if GDB_MULTI_ARCH
  24 #include "gdbcmd.h"
  25 #include "inferior.h"           /* enum CALL_DUMMY_LOCATION et.al. */
  26 #else
  27 /* Just include everything in sight so that the every old definition
  28    of macro is visible. */
  29 #include "gdb_string.h"
  30 #include "symtab.h"
  31 #include "frame.h"
  32 #include "inferior.h"
  33 #include "breakpoint.h"
  34 #include "gdb_wait.h"
  35 #include "gdbcore.h"
  36 #include "gdbcmd.h"
  37 #include "target.h"
  38 #include "gdbthread.h"
  39 #include "annotate.h"
  40 #include "symfile.h"            /* for overlay functions */
  41 #endif
  42
  43 #include "version.h"
  44
  45 #include "floatformat.h"
  46
  47 /* Convenience macro for allocting typesafe memory. */
  48
  49 #ifndef XMALLOC
  50 #define XMALLOC(TYPE) (TYPE*) xmalloc (sizeof (TYPE))
  51 #endif
  52
  53
  54 /* Use the program counter to determine the contents and size
  55    of a breakpoint instruction.  If no target-dependent macro
  56    BREAKPOINT_FROM_PC has been defined to implement this function,
  57    assume that the breakpoint doesn't depend on the PC, and
  58    use the values of the BIG_BREAKPOINT and LITTLE_BREAKPOINT macros.
  59    Return a pointer to a string of bytes that encode a breakpoint
  60    instruction, stores the length of the string to *lenptr,
  61    and optionally adjust the pc to point to the correct memory location
  62    for inserting the breakpoint.  */
  63
  64 unsigned char *
  65 legacy_breakpoint_from_pc (CORE_ADDR * pcptr, int *lenptr)
  66 {
  67   /* {BIG_,LITTLE_}BREAKPOINT is the sequence of bytes we insert for a
  68      breakpoint.  On some machines, breakpoints are handled by the
  69      target environment and we don't have to worry about them here.  */
  70 #ifdef BIG_BREAKPOINT
  71   if (TARGET_BYTE_ORDER == BIG_ENDIAN)
  72     {
  73       static unsigned char big_break_insn[] = BIG_BREAKPOINT;
  74       *lenptr = sizeof (big_break_insn);
  75       return big_break_insn;
  76     }
  77 #endif
  78 #ifdef LITTLE_BREAKPOINT
  79   if (TARGET_BYTE_ORDER != BIG_ENDIAN)
  80     {
  81       static unsigned char little_break_insn[] = LITTLE_BREAKPOINT;
  82       *lenptr = sizeof (little_break_insn);
  83       return little_break_insn;
  84     }
  85 #endif
  86 #ifdef BREAKPOINT
  87   {
  88     static unsigned char break_insn[] = BREAKPOINT;
  89     *lenptr = sizeof (break_insn);
  90     return break_insn;
  91   }
  92 #endif
  93   *lenptr = 0;
  94   return NULL;
  95 }
  96
  97 int
  98 generic_frameless_function_invocation_not (struct frame_info *fi)
  99 {
 100   return 0;
 101 }
 102
 103 int
 104 generic_return_value_on_stack_not (struct type *type)
 105 {
 106   return 0;
 107 }
 108
 109 char *
 110 legacy_register_name (int i)
 111 {
 112 #ifdef REGISTER_NAMES
 113   static char *names[] = REGISTER_NAMES;
 114   if (i < 0 || i >= (sizeof (names) / sizeof (*names)))
 115     return NULL;
 116   else
 117     return names[i];
 118 #else
 119   internal_error (__FILE__, __LINE__,
 120                   "legacy_register_name: called.");
 121   return NULL;
 122 #endif
 123 }
 124
 125 #if defined (CALL_DUMMY)
 126 LONGEST legacy_call_dummy_words[] = CALL_DUMMY;
 127 #else
 128 LONGEST legacy_call_dummy_words[1];
 129 #endif
 130 int legacy_sizeof_call_dummy_words = sizeof (legacy_call_dummy_words);
 131
 132 void
 133 generic_remote_translate_xfer_address (CORE_ADDR gdb_addr, int gdb_len,
 134                                        CORE_ADDR * rem_addr, int *rem_len)
 135 {
 136   *rem_addr = gdb_addr;
 137   *rem_len = gdb_len;
 138 }
 139
 140 int
 141 generic_prologue_frameless_p (CORE_ADDR ip)
 142 {
 143 #ifdef SKIP_PROLOGUE_FRAMELESS_P
 144   return ip == SKIP_PROLOGUE_FRAMELESS_P (ip);
 145 #else
 146   return ip == SKIP_PROLOGUE (ip);
 147 #endif
 148 }
 149
 150
 151 /* Helper functions for INNER_THAN */
 152
 153 int
 154 core_addr_lessthan (CORE_ADDR lhs, CORE_ADDR rhs)
 155 {
 156   return (lhs < rhs);
 157 }
 158
 159 int
 160 core_addr_greaterthan (CORE_ADDR lhs, CORE_ADDR rhs)
 161 {
 162   return (lhs > rhs);
 163 }
 164
 165
 166 /* Helper functions for TARGET_{FLOAT,DOUBLE}_FORMAT */
 167
 168 const struct floatformat *
 169 default_float_format (struct gdbarch *gdbarch)
 170 {
 171 #if GDB_MULTI_ARCH
 172   int byte_order = gdbarch_byte_order (gdbarch);
 173 #else
 174   int byte_order = TARGET_BYTE_ORDER;
 175 #endif
 176   switch (byte_order)
 177     {
 178     case BIG_ENDIAN:
 179       return &floatformat_ieee_single_big;
 180     case LITTLE_ENDIAN:
 181       return &floatformat_ieee_single_little;
 182     default:
 183       internal_error (__FILE__, __LINE__,
 184                       "default_float_format: bad byte order");
 185     }
 186 }
 187
 188
 189 const struct floatformat *
 190 default_double_format (struct gdbarch *gdbarch)
 191 {
 192 #if GDB_MULTI_ARCH
 193   int byte_order = gdbarch_byte_order (gdbarch);
 194 #else
 195   int byte_order = TARGET_BYTE_ORDER;
 196 #endif
 197   switch (byte_order)
 198     {
 199     case BIG_ENDIAN:
 200       return &floatformat_ieee_double_big;
 201     case LITTLE_ENDIAN:
 202       return &floatformat_ieee_double_little;
 203     default:
 204       internal_error (__FILE__, __LINE__,
 205                       "default_double_format: bad byte order");
 206     }
 207 }
 208
 209 /* Misc helper functions for targets. */
 210
 211 int
 212 frame_num_args_unknown (struct frame_info *fi)
 213 {
 214   return -1;
 215 }
 216
 217
 218 int
 219 generic_register_convertible_not (int num)
 220 {
 221   return 0;
 222 }
 223
 224
 225 int
 226 default_register_sim_regno (int num)
 227 {
 228   return num;
 229 }
 230
 231
 232 CORE_ADDR
 233 default_convert_from_func_ptr_addr (CORE_ADDR addr)
 234 {
 235   return addr;
 236 }
 237
 238 int
 239 no_op_reg_to_regnum (int reg)
 240 {
 241   return reg;
 242 }
 243
 244 /* For use by frame_args_address and frame_locals_address.  */
 245 CORE_ADDR
 246 default_frame_address (struct frame_info *fi)
 247 {
 248   return fi->frame;
 249 }
 250
 251 /* Functions to manipulate the endianness of the target.  */
 252
 253 #ifdef TARGET_BYTE_ORDER_SELECTABLE
 254 /* compat - Catch old targets that expect a selectable byte-order to
 255    default to BIG_ENDIAN */
 256 #ifndef TARGET_BYTE_ORDER_DEFAULT
 257 #define TARGET_BYTE_ORDER_DEFAULT BIG_ENDIAN
 258 #endif
 259 #endif
 260 #if !TARGET_BYTE_ORDER_SELECTABLE_P
 261 #ifndef TARGET_BYTE_ORDER_DEFAULT
 262 /* compat - Catch old non byte-order selectable targets that do not
 263    define TARGET_BYTE_ORDER_DEFAULT and instead expect
 264    TARGET_BYTE_ORDER to be used as the default.  For targets that
 265    defined neither TARGET_BYTE_ORDER nor TARGET_BYTE_ORDER_DEFAULT the
 266    below will get a strange compiler warning. */
 267 #define TARGET_BYTE_ORDER_DEFAULT TARGET_BYTE_ORDER
 268 #endif
 269 #endif
 270 #ifndef TARGET_BYTE_ORDER_DEFAULT
 271 #define TARGET_BYTE_ORDER_DEFAULT BIG_ENDIAN /* arbitrary */
 272 #endif
 273 /* ``target_byte_order'' is only used when non- multi-arch.
 274    Multi-arch targets obtain the current byte order using
 275    TARGET_BYTE_ORDER which is controlled by gdbarch.*. */
 276 int target_byte_order = TARGET_BYTE_ORDER_DEFAULT;
 277 int target_byte_order_auto = 1;
 278
 279 static const char endian_big[] = "big";
 280 static const char endian_little[] = "little";
 281 static const char endian_auto[] = "auto";
 282 static const char *endian_enum[] =
 283 {
 284   endian_big,
 285   endian_little,
 286   endian_auto,
 287   NULL,
 288 };
 289 static const char *set_endian_string;
 290
 291 /* Called by ``show endian''.  */
 292
 293 static void
 294 show_endian (char *args, int from_tty)
 295 {
 296   if (TARGET_BYTE_ORDER_AUTO)
 297     printf_unfiltered ("The target endianness is set automatically (currently %s endian)\n",
 298                        (TARGET_BYTE_ORDER == BIG_ENDIAN ? "big" : "little"));
 299   else
 300     printf_unfiltered ("The target is assumed to be %s endian\n",
 301                        (TARGET_BYTE_ORDER == BIG_ENDIAN ? "big" : "little"));
 302 }
 303
 304 static void
 305 set_endian (char *ignore_args, int from_tty, struct cmd_list_element *c)
 306 {
 307   if (!TARGET_BYTE_ORDER_SELECTABLE_P)
 308     {
 309       printf_unfiltered ("Byte order is not selectable.");
 310     }
 311   else if (set_endian_string == endian_auto)
 312     {
 313       target_byte_order_auto = 1;
 314     }
 315   else if (set_endian_string == endian_little)
 316     {
 317       target_byte_order_auto = 0;
 318       if (GDB_MULTI_ARCH)
 319         {
 320           struct gdbarch_info info;
 321           memset (&info, 0, sizeof info);
 322           info.byte_order = LITTLE_ENDIAN;
 323           if (! gdbarch_update_p (info))
 324             {
 325               printf_unfiltered ("Little endian target not supported by GDB\n");
 326             }
 327         }
 328       else
 329         {
 330           target_byte_order = LITTLE_ENDIAN;
 331         }
 332     }
 333   else if (set_endian_string == endian_big)
 334     {
 335       target_byte_order_auto = 0;
 336       if (GDB_MULTI_ARCH)
 337         {
 338           struct gdbarch_info info;
 339           memset (&info, 0, sizeof info);
 340           info.byte_order = BIG_ENDIAN;
 341           if (! gdbarch_update_p (info))
 342             {
 343               printf_unfiltered ("Big endian target not supported by GDB\n");
 344             }
 345         }
 346       else
 347         {
 348           target_byte_order = BIG_ENDIAN;
 349         }
 350     }
 351   else
 352     internal_error (__FILE__, __LINE__,
 353                     "set_endian: bad value");
 354   show_endian (NULL, from_tty);
 355 }
 356
 357 /* Set the endianness from a BFD.  */
 358
 359 static void
 360 set_endian_from_file (bfd *abfd)
 361 {
 362   if (GDB_MULTI_ARCH)
 363     internal_error (__FILE__, __LINE__,
 364                     "set_endian_from_file: not for multi-arch");
 365   if (TARGET_BYTE_ORDER_SELECTABLE_P)
 366     {
 367       int want;
 368
 369       if (bfd_big_endian (abfd))
 370         want = BIG_ENDIAN;
 371       else
 372         want = LITTLE_ENDIAN;
 373       if (TARGET_BYTE_ORDER_AUTO)
 374         target_byte_order = want;
 375       else if (TARGET_BYTE_ORDER != want)
 376         warning ("%s endian file does not match %s endian target.",
 377                  want == BIG_ENDIAN ? "big" : "little",
 378                  TARGET_BYTE_ORDER == BIG_ENDIAN ? "big" : "little");
 379     }
 380   else
 381     {
 382       if (bfd_big_endian (abfd)
 383           ? TARGET_BYTE_ORDER != BIG_ENDIAN
 384           : TARGET_BYTE_ORDER == BIG_ENDIAN)
 385         warning ("%s endian file does not match %s endian target.",
 386                  bfd_big_endian (abfd) ? "big" : "little",
 387                  TARGET_BYTE_ORDER == BIG_ENDIAN ? "big" : "little");
 388     }
 389 }
 390
 391
 392 /* Functions to manipulate the architecture of the target */
 393
 394 enum set_arch { set_arch_auto, set_arch_manual };
 395
 396 int target_architecture_auto = 1;
 397
 398 const char *set_architecture_string;
 399
 400 /* Old way of changing the current architecture. */
 401
 402 extern const struct bfd_arch_info bfd_default_arch_struct;
 403 const struct bfd_arch_info *target_architecture = &bfd_default_arch_struct;
 404 int (*target_architecture_hook) (const struct bfd_arch_info *ap);
 405
 406 static int
 407 arch_ok (const struct bfd_arch_info *arch)
 408 {
 409   if (GDB_MULTI_ARCH)
 410     internal_error (__FILE__, __LINE__,
 411                     "arch_ok: not multi-arched");
 412   /* Should be performing the more basic check that the binary is
 413      compatible with GDB. */
 414   /* Check with the target that the architecture is valid. */
 415   return (target_architecture_hook == NULL
 416           || target_architecture_hook (arch));
 417 }
 418
 419 static void
 420 set_arch (const struct bfd_arch_info *arch,
 421           enum set_arch type)
 422 {
 423   if (GDB_MULTI_ARCH)
 424     internal_error (__FILE__, __LINE__,
 425                     "set_arch: not multi-arched");
 426   switch (type)
 427     {
 428     case set_arch_auto:
 429       if (!arch_ok (arch))
 430         warning ("Target may not support %s architecture",
 431                  arch->printable_name);
 432       target_architecture = arch;
 433       break;
 434     case set_arch_manual:
 435       if (!arch_ok (arch))
 436         {
 437           printf_unfiltered ("Target does not support `%s' architecture.\n",
 438                              arch->printable_name);
 439         }
 440       else
 441         {
 442           target_architecture_auto = 0;
 443           target_architecture = arch;
 444         }
 445       break;
 446     }
 447   if (gdbarch_debug)
 448     gdbarch_dump (current_gdbarch, gdb_stdlog);
 449 }
 450
 451 /* Set the architecture from arch/machine (deprecated) */
 452
 453 void
 454 set_architecture_from_arch_mach (enum bfd_architecture arch,
 455                                  unsigned long mach)
 456 {
 457   const struct bfd_arch_info *wanted = bfd_lookup_arch (arch, mach);
 458   if (GDB_MULTI_ARCH)
 459     internal_error (__FILE__, __LINE__,
 460                     "set_architecture_from_arch_mach: not multi-arched");
 461   if (wanted != NULL)
 462     set_arch (wanted, set_arch_manual);
 463   else
 464     internal_error (__FILE__, __LINE__,
 465                     "gdbarch: hardwired architecture/machine not recognized");
 466 }
 467
 468 /* Set the architecture from a BFD (deprecated) */
 469
 470 static void
 471 set_architecture_from_file (bfd *abfd)
 472 {
 473   const struct bfd_arch_info *wanted = bfd_get_arch_info (abfd);
 474   if (GDB_MULTI_ARCH)
 475     internal_error (__FILE__, __LINE__,
 476                     "set_architecture_from_file: not multi-arched");
 477   if (target_architecture_auto)
 478     {
 479       set_arch (wanted, set_arch_auto);
 480     }
 481   else if (wanted != target_architecture)
 482     {
 483       warning ("%s architecture file may be incompatible with %s target.",
 484                wanted->printable_name,
 485                target_architecture->printable_name);
 486     }
 487 }
 488
 489
 490 /* Called if the user enters ``show architecture'' without an
 491    argument. */
 492
 493 static void
 494 show_architecture (char *args, int from_tty)
 495 {
 496   const char *arch;
 497   arch = TARGET_ARCHITECTURE->printable_name;
 498   if (target_architecture_auto)
 499     printf_filtered ("The target architecture is set automatically (currently %s)\n", arch);
 500   else
 501     printf_filtered ("The target architecture is assumed to be %s\n", arch);
 502 }
 503
 504
 505 /* Called if the user enters ``set architecture'' with or without an
 506    argument. */
 507
 508 static void
 509 set_architecture (char *ignore_args, int from_tty, struct cmd_list_element *c)
 510 {
 511   if (strcmp (set_architecture_string, "auto") == 0)
 512     {
 513       target_architecture_auto = 1;
 514     }
 515   else if (GDB_MULTI_ARCH)
 516     {
 517       struct gdbarch_info info;
 518       memset (&info, 0, sizeof info);
 519       info.bfd_arch_info = bfd_scan_arch (set_architecture_string);
 520       if (info.bfd_arch_info == NULL)
 521         internal_error (__FILE__, __LINE__,
 522                         "set_architecture: bfd_scan_arch failed");
 523       if (gdbarch_update_p (info))
 524         target_architecture_auto = 0;
 525       else
 526         printf_unfiltered ("Architecture `%s' not recognized.\n",
 527                            set_architecture_string);
 528     }
 529   else
 530     {
 531       const struct bfd_arch_info *arch
 532         = bfd_scan_arch (set_architecture_string);
 533       if (arch == NULL)
 534         internal_error (__FILE__, __LINE__,
 535                         "set_architecture: bfd_scan_arch failed");
 536       set_arch (arch, set_arch_manual);
 537     }
 538   show_architecture (NULL, from_tty);
 539 }
 540
 541 /* Called if the user enters ``info architecture'' without an argument. */
 542
 543 static void
 544 info_architecture (char *args, int from_tty)
 545 {
 546   printf_filtered ("Available architectures are:\n");
 547   if (GDB_MULTI_ARCH)
 548     {
 549       const char **arches = gdbarch_printable_names ();
 550       const char **arch;
 551       for (arch = arches; *arch != NULL; arch++)
 552         {
 553           printf_filtered (" %s", *arch);
 554         }
 555       xfree (arches);
 556     }
 557   else
 558     {
 559       enum bfd_architecture a;
 560       for (a = bfd_arch_obscure + 1; a < bfd_arch_last; a++)
 561         {
 562           const struct bfd_arch_info *ap;
 563           for (ap = bfd_lookup_arch (a, 0);
 564                ap != NULL;
 565                ap = ap->next)
 566             {
 567               printf_filtered (" %s", ap->printable_name);
 568               ap = ap->next;
 569             }
 570         }
 571     }
 572   printf_filtered ("\n");
 573 }
 574
 575 /* Set the dynamic target-system-dependent parameters (architecture,
 576    byte-order) using information found in the BFD */
 577
 578 void
 579 set_gdbarch_from_file (bfd *abfd)
 580 {
 581   if (GDB_MULTI_ARCH)
 582     {
 583       struct gdbarch_info info;
 584       memset (&info, 0, sizeof info);
 585       info.abfd = abfd;
 586       if (! gdbarch_update_p (info))
 587         error ("Architecture of file not recognized.\n");
 588     }
 589   else
 590     {
 591       set_architecture_from_file (abfd);
 592       set_endian_from_file (abfd);
 593     }
 594 }
 595
 596 /* Initialize the current architecture.  Update the ``set
 597    architecture'' command so that it specifies a list of valid
 598    architectures.  */
 599
 600 #ifdef DEFAULT_BFD_ARCH
 601 extern const bfd_arch_info_type DEFAULT_BFD_ARCH;
 602 static const bfd_arch_info_type *default_bfd_arch = &DEFAULT_BFD_ARCH;
 603 #else
 604 static const bfd_arch_info_type *default_bfd_arch;
 605 #endif
 606
 607 #ifdef DEFAULT_BFD_VEC
 608 extern const bfd_target DEFAULT_BFD_VEC;
 609 static const bfd_target *default_bfd_vec = &DEFAULT_BFD_VEC;
 610 #else
 611 static const bfd_target *default_bfd_vec;
 612 #endif
 613
 614 void
 615 initialize_current_architecture (void)
 616 {
 617   const char **arches = gdbarch_printable_names ();
 618
 619   /* determine a default architecture and byte order. */
 620   struct gdbarch_info info;
 621   memset (&info, 0, sizeof (info));
 622
 623   /* Find a default architecture. */
 624   if (info.bfd_arch_info == NULL
 625       && default_bfd_arch != NULL)
 626     info.bfd_arch_info = default_bfd_arch;
 627   if (info.bfd_arch_info == NULL)
 628     {
 629       /* Choose the architecture by taking the first one
 630          alphabetically. */
 631       const char *chosen = arches[0];
 632       const char **arch;
 633       for (arch = arches; *arch != NULL; arch++)
 634         {
 635           if (strcmp (*arch, chosen) < 0)
 636             chosen = *arch;
 637         }
 638       if (chosen == NULL)
 639         internal_error (__FILE__, __LINE__,
 640                         "initialize_current_architecture: No arch");
 641       info.bfd_arch_info = bfd_scan_arch (chosen);
 642       if (info.bfd_arch_info == NULL)
 643         internal_error (__FILE__, __LINE__,
 644                         "initialize_current_architecture: Arch not found");
 645     }
 646
 647   /* take several guesses at a byte order. */
 648   /* NB: can't use TARGET_BYTE_ORDER_DEFAULT as its definition is
 649      forced above. */
 650   if (info.byte_order == 0
 651       && default_bfd_vec != NULL)
 652     {
 653       /* Extract BFD's default vector's byte order. */
 654       switch (default_bfd_vec->byteorder)
 655         {
 656         case BFD_ENDIAN_BIG:
 657           info.byte_order = BIG_ENDIAN;
 658           break;
 659         case BFD_ENDIAN_LITTLE:
 660           info.byte_order = LITTLE_ENDIAN;
 661           break;
 662         default:
 663           break;
 664         }
 665     }
 666   if (info.byte_order == 0)
 667     {
 668       /* look for ``*el-*'' in the target name. */
 669       const char *chp;
 670       chp = strchr (target_name, '-');
 671       if (chp != NULL
 672           && chp - 2 >= target_name
 673           && strncmp (chp - 2, "el", 2) == 0)
 674         info.byte_order = LITTLE_ENDIAN;
 675     }
 676   if (info.byte_order == 0)
 677     {
 678       /* Wire it to big-endian!!! */
 679       info.byte_order = BIG_ENDIAN;
 680     }
 681
 682   if (GDB_MULTI_ARCH)
 683     {
 684       if (! gdbarch_update_p (info))
 685         {
 686           internal_error (__FILE__, __LINE__,
 687                           "initialize_current_architecture: Selection of initial architecture failed");
 688         }
 689     }
 690
 691   /* Create the ``set architecture'' command appending ``auto'' to the
 692      list of architectures. */
 693   {
 694     struct cmd_list_element *c;
 695     /* Append ``auto''. */
 696     int nr;
 697     for (nr = 0; arches[nr] != NULL; nr++);
 698     arches = xrealloc (arches, sizeof (char*) * (nr + 2));
 699     arches[nr + 0] = "auto";
 700     arches[nr + 1] = NULL;
 701     /* FIXME: add_set_enum_cmd() uses an array of ``char *'' instead
 702        of ``const char *''.  We just happen to know that the casts are
 703        safe. */
 704     c = add_set_enum_cmd ("architecture", class_support,
 705                           arches, &set_architecture_string,
 706                           "Set architecture of target.",
 707                           &setlist);
 708     c->function.sfunc = set_architecture;
 709     add_alias_cmd ("processor", "architecture", class_support, 1, &setlist);
 710     /* Don't use set_from_show - need to print both auto/manual and
 711        current setting. */
 712     add_cmd ("architecture", class_support, show_architecture,
 713              "Show the current target architecture", &showlist);
 714     c = add_cmd ("architecture", class_support, info_architecture,
 715                  "List supported target architectures", &infolist);
 716     deprecate_cmd (c, "set architecture");
 717   }
 718 }
 719
 720
 721 /* */
 722
 723 extern initialize_file_ftype _initialize_gdbarch_utils;
 724
 725 void
 726 _initialize_gdbarch_utils (void)
 727 {
 728   struct cmd_list_element *c;
 729   c = add_set_enum_cmd ("endian", class_support,
 730                         endian_enum, &set_endian_string,
 731                         "Set endianness of target.",
 732                         &setlist);
 733   c->function.sfunc = set_endian;
 734   /* Don't use set_from_show - need to print both auto/manual and
 735      current setting. */
 736   add_cmd ("endian", class_support, show_endian,
 737            "Show the current byte-order", &showlist);
 738 }