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