bfd/archures.c

   1 /* BFD library support routines for architectures.
   2    Copyright (C) 1990, 91, 92, 93, 94, 95, 96, 97, 98, 1999, 2000
   3    Free Software Foundation, Inc.
   4    Hacked by John Gilmore and Steve Chamberlain of Cygnus Support.
   5
   6 This file is part of BFD, the Binary File Descriptor library.
   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, Boston, MA 02111-1307, USA.  */
  21
  22 #include "bfd.h"
  23 #include "sysdep.h"
  24 #include "libbfd.h"
  25 #include <ctype.h>
  26
  27 /*
  28
  29 SECTION
  30         Architectures
  31
  32         BFD keeps one atom in a BFD describing the
  33         architecture of the data attached to the BFD: a pointer to a
  34         <<bfd_arch_info_type>>.
  35
  36         Pointers to structures can be requested independently of a BFD
  37         so that an architecture's information can be interrogated
  38         without access to an open BFD.
  39
  40         The architecture information is provided by each architecture package.
  41         The set of default architectures is selected by the macro
  42         <<SELECT_ARCHITECTURES>>.  This is normally set up in the
  43         @file{config/@var{target}.mt} file of your choice.  If the name is not
  44         defined, then all the architectures supported are included.
  45
  46         When BFD starts up, all the architectures are called with an
  47         initialize method.  It is up to the architecture back end to
  48         insert as many items into the list of architectures as it wants to;
  49         generally this would be one for each machine and one for the
  50         default case (an item with a machine field of 0).
  51
  52         BFD's idea of an architecture is implemented in @file{archures.c}.
  53 */
  54
  55 /*
  56
  57 SUBSECTION
  58         bfd_architecture
  59
  60 DESCRIPTION
  61         This enum gives the object file's CPU architecture, in a
  62         global sense---i.e., what processor family does it belong to?
  63         Another field indicates which processor within
  64         the family is in use.  The machine gives a number which
  65         distinguishes different versions of the architecture,
  66         containing, for example, 2 and 3 for Intel i960 KA and i960 KB,
  67         and 68020 and 68030 for Motorola 68020 and 68030.
  68
  69 .enum bfd_architecture
  70 .{
  71 .  bfd_arch_unknown,   {* File arch not known *}
  72 .  bfd_arch_obscure,   {* Arch known, not one of these *}
  73 .  bfd_arch_m68k,      {* Motorola 68xxx *}
  74 .#define bfd_mach_m68000 1
  75 .#define bfd_mach_m68008 2
  76 .#define bfd_mach_m68010 3
  77 .#define bfd_mach_m68020 4
  78 .#define bfd_mach_m68030 5
  79 .#define bfd_mach_m68040 6
  80 .#define bfd_mach_m68060 7
  81 .#define bfd_mach_cpu32  8
  82 .  bfd_arch_vax,       {* DEC Vax *}
  83 .  bfd_arch_i960,      {* Intel 960 *}
  84 .    {* The order of the following is important.
  85 .       lower number indicates a machine type that
  86 .       only accepts a subset of the instructions
  87 .       available to machines with higher numbers.
  88 .       The exception is the "ca", which is
  89 .       incompatible with all other machines except
  90 .       "core". *}
  91 .
  92 .#define bfd_mach_i960_core      1
  93 .#define bfd_mach_i960_ka_sa     2
  94 .#define bfd_mach_i960_kb_sb     3
  95 .#define bfd_mach_i960_mc        4
  96 .#define bfd_mach_i960_xa        5
  97 .#define bfd_mach_i960_ca        6
  98 .#define bfd_mach_i960_jx        7
  99 .#define bfd_mach_i960_hx        8
 100 .
 101 .  bfd_arch_a29k,      {* AMD 29000 *}
 102 .  bfd_arch_sparc,     {* SPARC *}
 103 .#define bfd_mach_sparc                 1
 104 .{* The difference between v8plus and v9 is that v9 is a true 64 bit env.  *}
 105 .#define bfd_mach_sparc_sparclet        2
 106 .#define bfd_mach_sparc_sparclite       3
 107 .#define bfd_mach_sparc_v8plus          4
 108 .#define bfd_mach_sparc_v8plusa         5 {* with ultrasparc add'ns *}
 109 .#define bfd_mach_sparc_sparclite_le    6
 110 .#define bfd_mach_sparc_v9              7
 111 .#define bfd_mach_sparc_v9a             8 {* with ultrasparc add'ns *}
 112 .#define bfd_mach_sparc_v8plusb         9 {* with cheetah add'ns *}
 113 .#define bfd_mach_sparc_v9b             10 {* with cheetah add'ns *}
 114 .{* Nonzero if MACH has the v9 instruction set.  *}
 115 .#define bfd_mach_sparc_v9_p(mach) \
 116 .  ((mach) >= bfd_mach_sparc_v8plus && (mach) <= bfd_mach_sparc_v9b \
 117 .   && (mach) != bfd_mach_sparc_sparclite_le)
 118 .  bfd_arch_mips,      {* MIPS Rxxxx *}
 119 .#define bfd_mach_mips3000              3000
 120 .#define bfd_mach_mips3900              3900
 121 .#define bfd_mach_mips4000              4000
 122 .#define bfd_mach_mips4010              4010
 123 .#define bfd_mach_mips4100              4100
 124 .#define bfd_mach_mips4111              4111
 125 .#define bfd_mach_mips4300              4300
 126 .#define bfd_mach_mips4400              4400
 127 .#define bfd_mach_mips4600              4600
 128 .#define bfd_mach_mips4650              4650
 129 .#define bfd_mach_mips5000              5000
 130 .#define bfd_mach_mips6000              6000
 131 .#define bfd_mach_mips8000              8000
 132 .#define bfd_mach_mips10000             10000
 133 .#define bfd_mach_mips16                16
 134 .#define bfd_mach_mips32                32
 135 .#define bfd_mach_mips32_4k             3204113 {* 32, 04, octal 'K' *}
 136 .#define bfd_mach_mips5                 5
 137 .#define bfd_mach_mips64                64
 138 .  bfd_arch_i386,      {* Intel 386 *}
 139 .#define bfd_mach_i386_i386 0
 140 .#define bfd_mach_i386_i8086 1
 141 .#define bfd_mach_i386_i386_intel_syntax 2
 142 .#define bfd_mach_x86_64 3
 143 .#define bfd_mach_x86_64_intel_syntax 4
 144 .  bfd_arch_we32k,     {* AT&T WE32xxx *}
 145 .  bfd_arch_tahoe,     {* CCI/Harris Tahoe *}
 146 .  bfd_arch_i860,      {* Intel 860 *}
 147 .  bfd_arch_i370,      {* IBM 360/370 Mainframes *}
 148 .  bfd_arch_romp,      {* IBM ROMP PC/RT *}
 149 .  bfd_arch_alliant,   {* Alliant *}
 150 .  bfd_arch_convex,    {* Convex *}
 151 .  bfd_arch_m88k,      {* Motorola 88xxx *}
 152 .  bfd_arch_pyramid,   {* Pyramid Technology *}
 153 .  bfd_arch_h8300,     {* Hitachi H8/300 *}
 154 .#define bfd_mach_h8300   1
 155 .#define bfd_mach_h8300h  2
 156 .#define bfd_mach_h8300s  3
 157 .  bfd_arch_powerpc,   {* PowerPC *}
 158 .#define bfd_mach_ppc           0
 159 .#define bfd_mach_ppc_403       403
 160 .#define bfd_mach_ppc_403gc     4030
 161 .#define bfd_mach_ppc_505       505
 162 .#define bfd_mach_ppc_601       601
 163 .#define bfd_mach_ppc_602       602
 164 .#define bfd_mach_ppc_603       603
 165 .#define bfd_mach_ppc_ec603e    6031
 166 .#define bfd_mach_ppc_604       604
 167 .#define bfd_mach_ppc_620       620
 168 .#define bfd_mach_ppc_630       630
 169 .#define bfd_mach_ppc_750       750
 170 .#define bfd_mach_ppc_860       860
 171 .#define bfd_mach_ppc_a35       35
 172 .#define bfd_mach_ppc_rs64ii    642
 173 .#define bfd_mach_ppc_rs64iii   643
 174 .#define bfd_mach_ppc_7400      7400
 175 .  bfd_arch_rs6000,    {* IBM RS/6000 *}
 176 .#define bfd_mach_rs6k          0
 177 .#define bfd_mach_rs6k_rs1      6001
 178 .#define bfd_mach_rs6k_rsc      6003
 179 .#define bfd_mach_rs6k_rs2      6002
 180 .  bfd_arch_hppa,      {* HP PA RISC *}
 181 .  bfd_arch_d10v,      {* Mitsubishi D10V *}
 182 .#define bfd_mach_d10v          0
 183 .#define bfd_mach_d10v_ts2      2
 184 .#define bfd_mach_d10v_ts3      3
 185 .  bfd_arch_d30v,      {* Mitsubishi D30V *}
 186 .  bfd_arch_m68hc11,   {* Motorola 68HC11 *}
 187 .  bfd_arch_m68hc12,   {* Motorola 68HC12 *}
 188 .  bfd_arch_z8k,       {* Zilog Z8000 *}
 189 .#define bfd_mach_z8001         1
 190 .#define bfd_mach_z8002         2
 191 .  bfd_arch_h8500,     {* Hitachi H8/500 *}
 192 .  bfd_arch_sh,        {* Hitachi SH *}
 193 .#define bfd_mach_sh            0
 194 .#define bfd_mach_sh2        0x20
 195 .#define bfd_mach_sh_dsp     0x2d
 196 .#define bfd_mach_sh3        0x30
 197 .#define bfd_mach_sh3_dsp    0x3d
 198 .#define bfd_mach_sh3e       0x3e
 199 .#define bfd_mach_sh4        0x40
 200 .  bfd_arch_alpha,     {* Dec Alpha *}
 201 .#define bfd_mach_alpha_ev4  0x10
 202 .#define bfd_mach_alpha_ev5  0x20
 203 .#define bfd_mach_alpha_ev6  0x30
 204 .  bfd_arch_arm,       {* Advanced Risc Machines ARM *}
 205 .#define bfd_mach_arm_2         1
 206 .#define bfd_mach_arm_2a        2
 207 .#define bfd_mach_arm_3         3
 208 .#define bfd_mach_arm_3M        4
 209 .#define bfd_mach_arm_4         5
 210 .#define bfd_mach_arm_4T        6
 211 .#define bfd_mach_arm_5         7
 212 .#define bfd_mach_arm_5T        8
 213 .#define bfd_mach_arm_5TE       9
 214 .#define bfd_mach_arm_XScale    10
 215 .  bfd_arch_ns32k,     {* National Semiconductors ns32000 *}
 216 .  bfd_arch_w65,       {* WDC 65816 *}
 217 .  bfd_arch_tic30,     {* Texas Instruments TMS320C30 *}
 218 .  bfd_arch_tic54x,    {* Texas Instruments TMS320C54X *}
 219 .  bfd_arch_tic80,     {* TI TMS320c80 (MVP) *}
 220 .  bfd_arch_v850,      {* NEC V850 *}
 221 .#define bfd_mach_v850          0
 222 .#define bfd_mach_v850e         'E'
 223 .#define bfd_mach_v850ea        'A'
 224 .  bfd_arch_arc,       {* Argonaut RISC Core *}
 225 .#define bfd_mach_arc_base 0
 226 .  bfd_arch_m32r,      {* Mitsubishi M32R/D *}
 227 .#define bfd_mach_m32r          0 {* backwards compatibility *}
 228 .#define bfd_mach_m32rx         'x'
 229 .  bfd_arch_mn10200,   {* Matsushita MN10200 *}
 230 .  bfd_arch_mn10300,   {* Matsushita MN10300 *}
 231 .#define bfd_mach_mn10300               300
 232 .#define bfd_mach_am33          330
 233 .  bfd_arch_fr30,
 234 .#define bfd_mach_fr30          0x46523330
 235 .  bfd_arch_mcore,
 236 .  bfd_arch_ia64,      {* HP/Intel ia64 *}
 237 .#define bfd_mach_ia64_elf64    0
 238 .#define bfd_mach_ia64_elf32    1
 239 .  bfd_arch_pj,
 240 .  bfd_arch_avr,       {* Atmel AVR microcontrollers *}
 241 .#define bfd_mach_avr1          1
 242 .#define bfd_mach_avr2          2
 243 .#define bfd_mach_avr3          3
 244 .#define bfd_mach_avr4          4
 245 .#define bfd_mach_avr5          5
 246 .  bfd_arch_cris,      {* Axis CRIS *}
 247 .  bfd_arch_last
 248 .  };
 249 */
 250
 251 /*
 252 SUBSECTION
 253         bfd_arch_info
 254
 255 DESCRIPTION
 256         This structure contains information on architectures for use
 257         within BFD.
 258
 259 .
 260 .typedef struct bfd_arch_info
 261 .{
 262 .  int bits_per_word;
 263 .  int bits_per_address;
 264 .  int bits_per_byte;
 265 .  enum bfd_architecture arch;
 266 .  unsigned long mach;
 267 .  const char *arch_name;
 268 .  const char *printable_name;
 269 .  unsigned int section_align_power;
 270 .  {* True if this is the default machine for the architecture.  *}
 271 .  boolean the_default;
 272 .  const struct bfd_arch_info * (*compatible)
 273 .       PARAMS ((const struct bfd_arch_info *a,
 274 .                const struct bfd_arch_info *b));
 275 .
 276 .  boolean (*scan) PARAMS ((const struct bfd_arch_info *, const char *));
 277 .
 278 .  const struct bfd_arch_info *next;
 279 .} bfd_arch_info_type;
 280 */
 281
 282 extern const bfd_arch_info_type bfd_a29k_arch;
 283 extern const bfd_arch_info_type bfd_alpha_arch;
 284 extern const bfd_arch_info_type bfd_arc_arch;
 285 extern const bfd_arch_info_type bfd_arm_arch;
 286 extern const bfd_arch_info_type bfd_cris_arch;
 287 extern const bfd_arch_info_type bfd_d10v_arch;
 288 extern const bfd_arch_info_type bfd_d30v_arch;
 289 extern const bfd_arch_info_type bfd_h8300_arch;
 290 extern const bfd_arch_info_type bfd_h8500_arch;
 291 extern const bfd_arch_info_type bfd_hppa_arch;
 292 extern const bfd_arch_info_type bfd_i370_arch;
 293 extern const bfd_arch_info_type bfd_i386_arch;
 294 extern const bfd_arch_info_type bfd_i860_arch;
 295 extern const bfd_arch_info_type bfd_i960_arch;
 296 extern const bfd_arch_info_type bfd_m32r_arch;
 297 extern const bfd_arch_info_type bfd_m68hc11_arch;
 298 extern const bfd_arch_info_type bfd_m68hc12_arch;
 299 extern const bfd_arch_info_type bfd_m68k_arch;
 300 extern const bfd_arch_info_type bfd_m88k_arch;
 301 extern const bfd_arch_info_type bfd_mips_arch;
 302 extern const bfd_arch_info_type bfd_mn10200_arch;
 303 extern const bfd_arch_info_type bfd_mn10300_arch;
 304 extern const bfd_arch_info_type bfd_powerpc_arch;
 305 extern const bfd_arch_info_type bfd_rs6000_arch;
 306 extern const bfd_arch_info_type bfd_pj_arch;
 307 extern const bfd_arch_info_type bfd_sh_arch;
 308 extern const bfd_arch_info_type bfd_sparc_arch;
 309 extern const bfd_arch_info_type bfd_tic30_arch;
 310 extern const bfd_arch_info_type bfd_tic54x_arch;
 311 extern const bfd_arch_info_type bfd_tic80_arch;
 312 extern const bfd_arch_info_type bfd_vax_arch;
 313 extern const bfd_arch_info_type bfd_we32k_arch;
 314 extern const bfd_arch_info_type bfd_z8k_arch;
 315 extern const bfd_arch_info_type bfd_ns32k_arch;
 316 extern const bfd_arch_info_type bfd_w65_arch;
 317 extern const bfd_arch_info_type bfd_v850_arch;
 318 extern const bfd_arch_info_type bfd_fr30_arch;
 319 extern const bfd_arch_info_type bfd_mcore_arch;
 320 extern const bfd_arch_info_type bfd_avr_arch;
 321 extern const bfd_arch_info_type bfd_ia64_arch;
 322
 323 static const bfd_arch_info_type * const bfd_archures_list[] = {
 324 #ifdef SELECT_ARCHITECTURES
 325   SELECT_ARCHITECTURES,
 326 #else
 327   &bfd_a29k_arch,
 328   &bfd_alpha_arch,
 329   &bfd_arc_arch,
 330   &bfd_arm_arch,
 331   &bfd_cris_arch,
 332   &bfd_d10v_arch,
 333   &bfd_d30v_arch,
 334   &bfd_h8300_arch,
 335   &bfd_h8500_arch,
 336   &bfd_hppa_arch,
 337   &bfd_i370_arch,
 338   &bfd_i386_arch,
 339   &bfd_i860_arch,
 340   &bfd_i960_arch,
 341   &bfd_m32r_arch,
 342   &bfd_m68hc11_arch,
 343   &bfd_m68hc12_arch,
 344   &bfd_m68k_arch,
 345   &bfd_m88k_arch,
 346   &bfd_mips_arch,
 347   &bfd_mn10200_arch,
 348   &bfd_mn10300_arch,
 349   &bfd_powerpc_arch,
 350   &bfd_rs6000_arch,
 351   &bfd_sh_arch,
 352   &bfd_sparc_arch,
 353   &bfd_tic30_arch,
 354   &bfd_tic54x_arch,
 355   &bfd_tic80_arch,
 356   &bfd_vax_arch,
 357   &bfd_we32k_arch,
 358   &bfd_z8k_arch,
 359   &bfd_ns32k_arch,
 360   &bfd_w65_arch,
 361   &bfd_v850_arch,
 362   &bfd_fr30_arch,
 363   &bfd_mcore_arch,
 364   &bfd_avr_arch,
 365   &bfd_ia64_arch,
 366 #endif
 367   0
 368 };
 369
 370 /*
 371 FUNCTION
 372         bfd_printable_name
 373
 374 SYNOPSIS
 375         const char *bfd_printable_name(bfd *abfd);
 376
 377 DESCRIPTION
 378         Return a printable string representing the architecture and machine
 379         from the pointer to the architecture info structure.
 380
 381 */
 382
 383 const char *
 384 bfd_printable_name (abfd)
 385      bfd *abfd;
 386 {
 387   return abfd->arch_info->printable_name;
 388 }
 389
 390 /*
 391 FUNCTION
 392         bfd_scan_arch
 393
 394 SYNOPSIS
 395         const bfd_arch_info_type *bfd_scan_arch(const char *string);
 396
 397 DESCRIPTION
 398         Figure out if BFD supports any cpu which could be described with
 399         the name @var{string}.  Return a pointer to an <<arch_info>>
 400         structure if a machine is found, otherwise NULL.
 401 */
 402
 403 const bfd_arch_info_type *
 404 bfd_scan_arch (string)
 405      const char *string;
 406 {
 407   const bfd_arch_info_type * const *app, *ap;
 408
 409   /* Look through all the installed architectures.  */
 410   for (app = bfd_archures_list; *app != NULL; app++)
 411     {
 412       for (ap = *app; ap != NULL; ap = ap->next)
 413         {
 414           if (ap->scan (ap, string))
 415             return ap;
 416         }
 417     }
 418
 419   return NULL;
 420 }
 421
 422 /*
 423 FUNCTION
 424         bfd_arch_list
 425
 426 SYNOPSIS
 427         const char **bfd_arch_list(void);
 428
 429 DESCRIPTION
 430         Return a freshly malloced NULL-terminated vector of the names
 431         of all the valid BFD architectures.  Do not modify the names.
 432 */
 433
 434 const char **
 435 bfd_arch_list ()
 436 {
 437   int vec_length = 0;
 438   const char **name_ptr;
 439   const char **name_list;
 440   const bfd_arch_info_type * const *app;
 441
 442   /* Determine the number of architectures.  */
 443   vec_length = 0;
 444   for (app = bfd_archures_list; *app != NULL; app++)
 445     {
 446       const bfd_arch_info_type *ap;
 447       for (ap = *app; ap != NULL; ap = ap->next)
 448         {
 449           vec_length++;
 450         }
 451     }
 452
 453   name_list = (const char **)
 454     bfd_malloc ((vec_length + 1) * sizeof (char **));
 455   if (name_list == NULL)
 456     return NULL;
 457
 458   /* Point the list at each of the names.  */
 459   name_ptr = name_list;
 460   for (app = bfd_archures_list; *app != NULL; app++)
 461     {
 462       const bfd_arch_info_type *ap;
 463       for (ap = *app; ap != NULL; ap = ap->next)
 464         {
 465           *name_ptr = ap->printable_name;
 466           name_ptr++;
 467         }
 468     }
 469   *name_ptr = NULL;
 470
 471   return name_list;
 472 }
 473
 474 /*
 475 FUNCTION
 476         bfd_arch_get_compatible
 477
 478 SYNOPSIS
 479         const bfd_arch_info_type *bfd_arch_get_compatible(
 480                 const bfd *abfd,
 481                 const bfd *bbfd);
 482
 483 DESCRIPTION
 484         Determine whether two BFDs'
 485         architectures and machine types are compatible.  Calculates
 486         the lowest common denominator between the two architectures
 487         and machine types implied by the BFDs and returns a pointer to
 488         an <<arch_info>> structure describing the compatible machine.
 489 */
 490
 491 const bfd_arch_info_type *
 492 bfd_arch_get_compatible (abfd, bbfd)
 493      const bfd *abfd;
 494      const bfd *bbfd;
 495 {
 496   /* If either architecture is unknown, then all we can do is assume
 497      the user knows what he's doing.  */
 498   if (abfd->arch_info->arch == bfd_arch_unknown)
 499     return bbfd->arch_info;
 500   if (bbfd->arch_info->arch == bfd_arch_unknown)
 501     return abfd->arch_info;
 502
 503   /* Otherwise architecture-specific code has to decide.  */
 504   return abfd->arch_info->compatible (abfd->arch_info, bbfd->arch_info);
 505 }
 506
 507 /*
 508 INTERNAL_DEFINITION
 509         bfd_default_arch_struct
 510
 511 DESCRIPTION
 512         The <<bfd_default_arch_struct>> is an item of
 513         <<bfd_arch_info_type>> which has been initialized to a fairly
 514         generic state.  A BFD starts life by pointing to this
 515         structure, until the correct back end has determined the real
 516         architecture of the file.
 517
 518 .extern const bfd_arch_info_type bfd_default_arch_struct;
 519 */
 520
 521 const bfd_arch_info_type bfd_default_arch_struct = {
 522   32, 32, 8, bfd_arch_unknown, 0, "unknown", "unknown", 2, true,
 523   bfd_default_compatible,
 524   bfd_default_scan,
 525   0,
 526 };
 527
 528 /*
 529 FUNCTION
 530         bfd_set_arch_info
 531
 532 SYNOPSIS
 533         void bfd_set_arch_info(bfd *abfd, const bfd_arch_info_type *arg);
 534
 535 DESCRIPTION
 536         Set the architecture info of @var{abfd} to @var{arg}.
 537 */
 538
 539 void
 540 bfd_set_arch_info (abfd, arg)
 541      bfd *abfd;
 542      const bfd_arch_info_type *arg;
 543 {
 544   abfd->arch_info = arg;
 545 }
 546
 547 /*
 548 INTERNAL_FUNCTION
 549         bfd_default_set_arch_mach
 550
 551 SYNOPSIS
 552         boolean bfd_default_set_arch_mach(bfd *abfd,
 553                 enum bfd_architecture arch,
 554                 unsigned long mach);
 555
 556 DESCRIPTION
 557         Set the architecture and machine type in BFD @var{abfd}
 558         to @var{arch} and @var{mach}.  Find the correct
 559         pointer to a structure and insert it into the <<arch_info>>
 560         pointer.
 561 */
 562
 563 boolean
 564 bfd_default_set_arch_mach (abfd, arch, mach)
 565      bfd *abfd;
 566      enum bfd_architecture arch;
 567      unsigned long mach;
 568 {
 569   const bfd_arch_info_type * const *app, *ap;
 570
 571   for (app = bfd_archures_list; *app != NULL; app++)
 572     {
 573       for (ap = *app; ap != NULL; ap = ap->next)
 574         {
 575           if (ap->arch == arch
 576               && (ap->mach == mach
 577                   || (mach == 0 && ap->the_default)))
 578             {
 579               abfd->arch_info = ap;
 580               return true;
 581             }
 582         }
 583     }
 584
 585   abfd->arch_info = &bfd_default_arch_struct;
 586   bfd_set_error (bfd_error_bad_value);
 587   return false;
 588 }
 589
 590 /*
 591 FUNCTION
 592         bfd_get_arch
 593
 594 SYNOPSIS
 595         enum bfd_architecture bfd_get_arch(bfd *abfd);
 596
 597 DESCRIPTION
 598         Return the enumerated type which describes the BFD @var{abfd}'s
 599         architecture.
 600 */
 601
 602 enum bfd_architecture
 603 bfd_get_arch (abfd)
 604      bfd *abfd;
 605 {
 606   return abfd->arch_info->arch;
 607 }
 608
 609 /*
 610 FUNCTION
 611         bfd_get_mach
 612
 613 SYNOPSIS
 614         unsigned long bfd_get_mach(bfd *abfd);
 615
 616 DESCRIPTION
 617         Return the long type which describes the BFD @var{abfd}'s
 618         machine.
 619 */
 620
 621 unsigned long
 622 bfd_get_mach (abfd)
 623      bfd *abfd;
 624 {
 625   return abfd->arch_info->mach;
 626 }
 627
 628 /*
 629 FUNCTION
 630         bfd_arch_bits_per_byte
 631
 632 SYNOPSIS
 633         unsigned int bfd_arch_bits_per_byte(bfd *abfd);
 634
 635 DESCRIPTION
 636         Return the number of bits in one of the BFD @var{abfd}'s
 637         architecture's bytes.
 638 */
 639
 640 unsigned int
 641 bfd_arch_bits_per_byte (abfd)
 642      bfd *abfd;
 643 {
 644   return abfd->arch_info->bits_per_byte;
 645 }
 646
 647 /*
 648 FUNCTION
 649         bfd_arch_bits_per_address
 650
 651 SYNOPSIS
 652         unsigned int bfd_arch_bits_per_address(bfd *abfd);
 653
 654 DESCRIPTION
 655         Return the number of bits in one of the BFD @var{abfd}'s
 656         architecture's addresses.
 657 */
 658
 659 unsigned int
 660 bfd_arch_bits_per_address (abfd)
 661      bfd *abfd;
 662 {
 663   return abfd->arch_info->bits_per_address;
 664 }
 665
 666 /*
 667 INTERNAL_FUNCTION
 668         bfd_default_compatible
 669
 670 SYNOPSIS
 671         const bfd_arch_info_type *bfd_default_compatible
 672         (const bfd_arch_info_type *a,
 673         const bfd_arch_info_type *b);
 674
 675 DESCRIPTION
 676         The default function for testing for compatibility.
 677 */
 678
 679 const bfd_arch_info_type *
 680 bfd_default_compatible (a, b)
 681      const bfd_arch_info_type *a;
 682      const bfd_arch_info_type *b;
 683 {
 684   if (a->arch != b->arch)
 685     return NULL;
 686
 687   if (a->mach > b->mach)
 688     return a;
 689
 690   if (b->mach > a->mach)
 691     return b;
 692
 693   return a;
 694 }
 695
 696 /*
 697 INTERNAL_FUNCTION
 698         bfd_default_scan
 699
 700 SYNOPSIS
 701         boolean bfd_default_scan(const struct bfd_arch_info *info, const char *string);
 702
 703 DESCRIPTION
 704         The default function for working out whether this is an
 705         architecture hit and a machine hit.
 706 */
 707
 708 boolean
 709 bfd_default_scan (info, string)
 710      const struct bfd_arch_info *info;
 711      const char *string;
 712 {
 713   const char *ptr_src;
 714   const char *ptr_tst;
 715   unsigned long number;
 716   enum bfd_architecture arch;
 717   const char *printable_name_colon;
 718
 719   /* Exact match of the architecture name (ARCH_NAME) and also the
 720      default architecture?  */
 721   if (strcasecmp (string, info->arch_name) == 0
 722       && info->the_default)
 723     return true;
 724
 725   /* Exact match of the machine name (PRINTABLE_NAME)?  */
 726   if (strcasecmp (string, info->printable_name) == 0)
 727     return true;
 728
 729   /* Given that printable_name contains no colon, attempt to match:
 730      ARCH_NAME [ ":" ] PRINTABLE_NAME?  */
 731   printable_name_colon = strchr (info->printable_name, ':');
 732   if (printable_name_colon == NULL)
 733     {
 734       int strlen_arch_name = strlen (info->arch_name);
 735       if (strncasecmp (string, info->arch_name, strlen_arch_name) == 0)
 736         {
 737           if (string[strlen_arch_name] == ':')
 738             {
 739               if (strcasecmp (string + strlen_arch_name + 1,
 740                               info->printable_name) == 0)
 741                 return true;
 742             }
 743           else
 744             {
 745               if (strcasecmp (string + strlen_arch_name,
 746                               info->printable_name) == 0)
 747                 return true;
 748             }
 749         }
 750     }
 751
 752   /* Given that PRINTABLE_NAME has the form: <arch> ":" <mach>;
 753      Attempt to match: <arch> <mach>?  */
 754   if (printable_name_colon != NULL)
 755     {
 756       int colon_index = printable_name_colon - info->printable_name;
 757       if (strncasecmp (string, info->printable_name, colon_index) == 0
 758           && strcasecmp (string + colon_index,
 759                          info->printable_name + colon_index + 1) == 0)
 760         return true;
 761     }
 762
 763   /* Given that PRINTABLE_NAME has the form: <arch> ":" <mach>; Do not
 764      attempt to match just <mach>, it could be ambigious.  This test
 765      is left until later.  */
 766
 767   /* NOTE: The below is retained for compatibility only.  Please do
 768      not add to this code.  */
 769
 770   /* See how much of the supplied string matches with the
 771      architecture, eg the string m68k:68020 would match the 68k entry
 772      up to the :, then we get left with the machine number.  */
 773
 774   for (ptr_src = string, ptr_tst = info->arch_name;
 775        *ptr_src && *ptr_tst;
 776        ptr_src++, ptr_tst++)
 777     {
 778       if (*ptr_src != *ptr_tst)
 779         break;
 780     }
 781
 782   /* Chewed up as much of the architecture as will match, skip any
 783      colons.  */
 784   if (*ptr_src == ':')
 785     ptr_src++;
 786
 787   if (*ptr_src == 0)
 788     {
 789       /* Nothing more, then only keep this one if it is the default
 790          machine for this architecture.  */
 791       return info->the_default;
 792     }
 793
 794   number = 0;
 795   while (isdigit ((unsigned char) *ptr_src))
 796     {
 797       number = number * 10 + *ptr_src - '0';
 798       ptr_src++;
 799     }
 800
 801   /* NOTE: The below is retained for compatibility only.
 802      PLEASE DO NOT ADD TO THIS CODE.  */
 803
 804   switch (number)
 805     {
 806       /* FIXME: These are needed to parse IEEE objects.  */
 807       /* The following seven case's are here only for compatibility with
 808          older binutils (at least IEEE objects from binutils 2.9.1 require
 809          them).  */
 810     case bfd_mach_m68000:
 811     case bfd_mach_m68010:
 812     case bfd_mach_m68020:
 813     case bfd_mach_m68030:
 814     case bfd_mach_m68040:
 815     case bfd_mach_m68060:
 816     case bfd_mach_cpu32:
 817       arch = bfd_arch_m68k;
 818       break;
 819     case 68000:
 820       arch = bfd_arch_m68k;
 821       number = bfd_mach_m68000;
 822       break;
 823     case 68010:
 824       arch = bfd_arch_m68k;
 825       number = bfd_mach_m68010;
 826       break;
 827     case 68020:
 828       arch = bfd_arch_m68k;
 829       number = bfd_mach_m68020;
 830       break;
 831     case 68030:
 832       arch = bfd_arch_m68k;
 833       number = bfd_mach_m68030;
 834       break;
 835     case 68040:
 836       arch = bfd_arch_m68k;
 837       number = bfd_mach_m68040;
 838       break;
 839     case 68060:
 840       arch = bfd_arch_m68k;
 841       number = bfd_mach_m68060;
 842       break;
 843     case 68332:
 844       arch = bfd_arch_m68k;
 845       number = bfd_mach_cpu32;
 846       break;
 847
 848     case 32000:
 849       arch = bfd_arch_we32k;
 850       break;
 851
 852     case 3000:
 853       arch = bfd_arch_mips;
 854       number = bfd_mach_mips3000;
 855       break;
 856
 857     case 4000:
 858       arch = bfd_arch_mips;
 859       number = bfd_mach_mips4000;
 860       break;
 861
 862     case 6000:
 863       arch = bfd_arch_rs6000;
 864       break;
 865
 866     case 7410:
 867       arch = bfd_arch_sh;
 868       number = bfd_mach_sh_dsp;
 869       break;
 870
 871     case 7708:
 872       arch = bfd_arch_sh;
 873       number = bfd_mach_sh3;
 874       break;
 875
 876     case 7729:
 877       arch = bfd_arch_sh;
 878       number = bfd_mach_sh3_dsp;
 879       break;
 880
 881     case 7750:
 882       arch = bfd_arch_sh;
 883       number = bfd_mach_sh4;
 884       break;
 885
 886     default:
 887       return false;
 888     }
 889
 890   if (arch != info->arch)
 891     return false;
 892
 893   if (number != info->mach)
 894     return false;
 895
 896   return true;
 897 }
 898
 899 /*
 900 FUNCTION
 901         bfd_get_arch_info
 902
 903 SYNOPSIS
 904         const bfd_arch_info_type * bfd_get_arch_info(bfd *abfd);
 905
 906 DESCRIPTION
 907         Return the architecture info struct in @var{abfd}.
 908 */
 909
 910 const bfd_arch_info_type *
 911 bfd_get_arch_info (abfd)
 912      bfd *abfd;
 913 {
 914   return abfd->arch_info;
 915 }
 916
 917 /*
 918 FUNCTION
 919         bfd_lookup_arch
 920
 921 SYNOPSIS
 922         const bfd_arch_info_type *bfd_lookup_arch
 923                 (enum bfd_architecture
 924                 arch,
 925                 unsigned long machine);
 926
 927 DESCRIPTION
 928         Look for the architecure info structure which matches the
 929         arguments @var{arch} and @var{machine}. A machine of 0 matches the
 930         machine/architecture structure which marks itself as the
 931         default.
 932 */
 933
 934 const bfd_arch_info_type *
 935 bfd_lookup_arch (arch, machine)
 936      enum bfd_architecture arch;
 937      unsigned long machine;
 938 {
 939   const bfd_arch_info_type * const *app, *ap;
 940
 941   for (app = bfd_archures_list; *app != NULL; app++)
 942     {
 943       for (ap = *app; ap != NULL; ap = ap->next)
 944         {
 945           if (ap->arch == arch
 946               && (ap->mach == machine
 947                   || (machine == 0 && ap->the_default)))
 948             return ap;
 949         }
 950     }
 951
 952   return NULL;
 953 }
 954
 955 /*
 956 FUNCTION
 957         bfd_printable_arch_mach
 958
 959 SYNOPSIS
 960         const char *bfd_printable_arch_mach
 961                 (enum bfd_architecture arch, unsigned long machine);
 962
 963 DESCRIPTION
 964         Return a printable string representing the architecture and
 965         machine type.
 966
 967         This routine is depreciated.
 968 */
 969
 970 const char *
 971 bfd_printable_arch_mach (arch, machine)
 972      enum bfd_architecture arch;
 973      unsigned long machine;
 974 {
 975   const bfd_arch_info_type *ap = bfd_lookup_arch (arch, machine);
 976
 977   if (ap)
 978     return ap->printable_name;
 979   return "UNKNOWN!";
 980 }
 981
 982 /*
 983 FUNCTION
 984         bfd_octets_per_byte
 985
 986 SYNOPSIS
 987         unsigned int bfd_octets_per_byte(bfd *abfd);
 988
 989 DESCRIPTION
 990         Return the number of octets (8-bit quantities) per target byte
 991         (minimum addressable unit).  In most cases, this will be one, but some
 992         DSP targets have 16, 32, or even 48 bits per byte.
 993 */
 994
 995 unsigned int
 996 bfd_octets_per_byte (abfd)
 997      bfd *abfd;
 998 {
 999   return bfd_arch_mach_octets_per_byte (bfd_get_arch (abfd),
1000                                         bfd_get_mach (abfd));
1001 }
1002
1003 /*
1004 FUNCTION
1005         bfd_arch_mach_octets_per_byte
1006
1007 SYNOPSIS
1008         unsigned int bfd_arch_mach_octets_per_byte(enum bfd_architecture arch,
1009                                                    unsigned long machine);
1010
1011 DESCRIPTION
1012         See bfd_octets_per_byte.
1013
1014         This routine is provided for those cases where a bfd * is not
1015         available
1016 */
1017
1018 unsigned int
1019 bfd_arch_mach_octets_per_byte (arch, mach)
1020      enum bfd_architecture arch;
1021      unsigned long mach;
1022 {
1023   const bfd_arch_info_type *ap = bfd_lookup_arch (arch, mach);
1024
1025   if (ap)
1026     return ap->bits_per_byte / 8;
1027   return 1;
1028 }