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_mips4K                32
 134 .#define bfd_mach_mips16                16
 135 .  bfd_arch_i386,      {* Intel 386 *}
 136 .#define bfd_mach_i386_i386 0
 137 .#define bfd_mach_i386_i8086 1
 138 .#define bfd_mach_i386_i386_intel_syntax 2
 139 .  bfd_arch_we32k,     {* AT&T WE32xxx *}
 140 .  bfd_arch_tahoe,     {* CCI/Harris Tahoe *}
 141 .  bfd_arch_i860,      {* Intel 860 *}
 142 .  bfd_arch_i370,      {* IBM 360/370 Mainframes *}
 143 .  bfd_arch_romp,      {* IBM ROMP PC/RT *}
 144 .  bfd_arch_alliant,   {* Alliant *}
 145 .  bfd_arch_convex,    {* Convex *}
 146 .  bfd_arch_m88k,      {* Motorola 88xxx *}
 147 .  bfd_arch_pyramid,   {* Pyramid Technology *}
 148 .  bfd_arch_h8300,     {* Hitachi H8/300 *}
 149 .#define bfd_mach_h8300   1
 150 .#define bfd_mach_h8300h  2
 151 .#define bfd_mach_h8300s  3
 152 .  bfd_arch_powerpc,   {* PowerPC *}
 153 .#define bfd_mach_ppc           0
 154 .#define bfd_mach_ppc_403       403
 155 .#define bfd_mach_ppc_403gc     4030
 156 .#define bfd_mach_ppc_505       505
 157 .#define bfd_mach_ppc_601       601
 158 .#define bfd_mach_ppc_602       602
 159 .#define bfd_mach_ppc_603       603
 160 .#define bfd_mach_ppc_ec603e    6031
 161 .#define bfd_mach_ppc_604       604
 162 .#define bfd_mach_ppc_620       620
 163 .#define bfd_mach_ppc_630       630
 164 .#define bfd_mach_ppc_750       750
 165 .#define bfd_mach_ppc_860       860
 166 .#define bfd_mach_ppc_a35       35
 167 .#define bfd_mach_ppc_rs64ii    642
 168 .#define bfd_mach_ppc_rs64iii   643
 169 .#define bfd_mach_ppc_7400      7400
 170 .  bfd_arch_rs6000,    {* IBM RS/6000 *}
 171 .#define bfd_mach_rs6k          0
 172 .#define bfd_mach_rs6k_rs1      6001
 173 .#define bfd_mach_rs6k_rsc      6003
 174 .#define bfd_mach_rs6k_rs2      6002
 175 .  bfd_arch_hppa,      {* HP PA RISC *}
 176 .  bfd_arch_d10v,      {* Mitsubishi D10V *}
 177 .#define bfd_mach_d10v          0
 178 .#define bfd_mach_d10v_ts2      2
 179 .#define bfd_mach_d10v_ts3      3
 180 .  bfd_arch_d30v,      {* Mitsubishi D30V *}
 181 .  bfd_arch_m68hc11,   {* Motorola 68HC11 *}
 182 .  bfd_arch_m68hc12,   {* Motorola 68HC12 *}
 183 .  bfd_arch_z8k,       {* Zilog Z8000 *}
 184 .#define bfd_mach_z8001         1
 185 .#define bfd_mach_z8002         2
 186 .  bfd_arch_h8500,     {* Hitachi H8/500 *}
 187 .  bfd_arch_sh,        {* Hitachi SH *}
 188 .#define bfd_mach_sh            0
 189 .#define bfd_mach_sh2        0x20
 190 .#define bfd_mach_sh_dsp     0x2d
 191 .#define bfd_mach_sh3        0x30
 192 .#define bfd_mach_sh3_dsp    0x3d
 193 .#define bfd_mach_sh3e       0x3e
 194 .#define bfd_mach_sh4        0x40
 195 .  bfd_arch_alpha,     {* Dec Alpha *}
 196 .#define bfd_mach_alpha_ev4  0x10
 197 .#define bfd_mach_alpha_ev5  0x20
 198 .#define bfd_mach_alpha_ev6  0x30
 199 .  bfd_arch_arm,       {* Advanced Risc Machines ARM *}
 200 .#define bfd_mach_arm_2         1
 201 .#define bfd_mach_arm_2a        2
 202 .#define bfd_mach_arm_3         3
 203 .#define bfd_mach_arm_3M        4
 204 .#define bfd_mach_arm_4         5
 205 .#define bfd_mach_arm_4T        6
 206 .#define bfd_mach_arm_5         7
 207 .#define bfd_mach_arm_5T        8
 208 .#define bfd_mach_arm_5TE       9
 209 .#define bfd_mach_arm_XScale    10
 210 .  bfd_arch_ns32k,     {* National Semiconductors ns32000 *}
 211 .  bfd_arch_w65,       {* WDC 65816 *}
 212 .  bfd_arch_tic30,     {* Texas Instruments TMS320C30 *}
 213 .  bfd_arch_tic54x,    {* Texas Instruments TMS320C54X *}
 214 .  bfd_arch_tic80,     {* TI TMS320c80 (MVP) *}
 215 .  bfd_arch_v850,      {* NEC V850 *}
 216 .#define bfd_mach_v850          0
 217 .#define bfd_mach_v850e         'E'
 218 .#define bfd_mach_v850ea        'A'
 219 .  bfd_arch_arc,       {* Argonaut RISC Core *}
 220 .#define bfd_mach_arc_base 0
 221 .  bfd_arch_m32r,      {* Mitsubishi M32R/D *}
 222 .#define bfd_mach_m32r          0 {* backwards compatibility *}
 223 .#define bfd_mach_m32rx         'x'
 224 .  bfd_arch_mn10200,   {* Matsushita MN10200 *}
 225 .  bfd_arch_mn10300,   {* Matsushita MN10300 *}
 226 .#define bfd_mach_mn10300               300
 227 .#define bfd_mach_am33          330
 228 .  bfd_arch_fr30,
 229 .#define bfd_mach_fr30          0x46523330
 230 .  bfd_arch_mcore,
 231 .  bfd_arch_ia64,      {* HP/Intel ia64 *}
 232 .#define bfd_mach_ia64_elf64    0
 233 .#define bfd_mach_ia64_elf32    1
 234 .  bfd_arch_pj,
 235 .  bfd_arch_avr,       {* Atmel AVR microcontrollers *}
 236 .#define bfd_mach_avr1          1
 237 .#define bfd_mach_avr2          2
 238 .#define bfd_mach_avr3          3
 239 .#define bfd_mach_avr4          4
 240 .#define bfd_mach_avr5          5
 241 .  bfd_arch_cris,      {* Axis CRIS *}
 242 .  bfd_arch_last
 243 .  };
 244 */
 245
 246 /*
 247 SUBSECTION
 248         bfd_arch_info
 249
 250 DESCRIPTION
 251         This structure contains information on architectures for use
 252         within BFD.
 253
 254 .
 255 .typedef struct bfd_arch_info
 256 .{
 257 .  int bits_per_word;
 258 .  int bits_per_address;
 259 .  int bits_per_byte;
 260 .  enum bfd_architecture arch;
 261 .  unsigned long mach;
 262 .  const char *arch_name;
 263 .  const char *printable_name;
 264 .  unsigned int section_align_power;
 265 .  {* True if this is the default machine for the architecture.  *}
 266 .  boolean the_default;
 267 .  const struct bfd_arch_info * (*compatible)
 268 .       PARAMS ((const struct bfd_arch_info *a,
 269 .                const struct bfd_arch_info *b));
 270 .
 271 .  boolean (*scan) PARAMS ((const struct bfd_arch_info *, const char *));
 272 .
 273 .  const struct bfd_arch_info *next;
 274 .} bfd_arch_info_type;
 275 */
 276
 277 extern const bfd_arch_info_type bfd_a29k_arch;
 278 extern const bfd_arch_info_type bfd_alpha_arch;
 279 extern const bfd_arch_info_type bfd_arc_arch;
 280 extern const bfd_arch_info_type bfd_arm_arch;
 281 extern const bfd_arch_info_type bfd_cris_arch;
 282 extern const bfd_arch_info_type bfd_d10v_arch;
 283 extern const bfd_arch_info_type bfd_d30v_arch;
 284 extern const bfd_arch_info_type bfd_h8300_arch;
 285 extern const bfd_arch_info_type bfd_h8500_arch;
 286 extern const bfd_arch_info_type bfd_hppa_arch;
 287 extern const bfd_arch_info_type bfd_i370_arch;
 288 extern const bfd_arch_info_type bfd_i386_arch;
 289 extern const bfd_arch_info_type bfd_i860_arch;
 290 extern const bfd_arch_info_type bfd_i960_arch;
 291 extern const bfd_arch_info_type bfd_m32r_arch;
 292 extern const bfd_arch_info_type bfd_m68hc11_arch;
 293 extern const bfd_arch_info_type bfd_m68hc12_arch;
 294 extern const bfd_arch_info_type bfd_m68k_arch;
 295 extern const bfd_arch_info_type bfd_m88k_arch;
 296 extern const bfd_arch_info_type bfd_mips_arch;
 297 extern const bfd_arch_info_type bfd_mn10200_arch;
 298 extern const bfd_arch_info_type bfd_mn10300_arch;
 299 extern const bfd_arch_info_type bfd_powerpc_arch;
 300 extern const bfd_arch_info_type bfd_rs6000_arch;
 301 extern const bfd_arch_info_type bfd_pj_arch;
 302 extern const bfd_arch_info_type bfd_sh_arch;
 303 extern const bfd_arch_info_type bfd_sparc_arch;
 304 extern const bfd_arch_info_type bfd_tic30_arch;
 305 extern const bfd_arch_info_type bfd_tic54x_arch;
 306 extern const bfd_arch_info_type bfd_tic80_arch;
 307 extern const bfd_arch_info_type bfd_vax_arch;
 308 extern const bfd_arch_info_type bfd_we32k_arch;
 309 extern const bfd_arch_info_type bfd_z8k_arch;
 310 extern const bfd_arch_info_type bfd_ns32k_arch;
 311 extern const bfd_arch_info_type bfd_w65_arch;
 312 extern const bfd_arch_info_type bfd_v850_arch;
 313 extern const bfd_arch_info_type bfd_fr30_arch;
 314 extern const bfd_arch_info_type bfd_mcore_arch;
 315 extern const bfd_arch_info_type bfd_avr_arch;
 316 extern const bfd_arch_info_type bfd_ia64_arch;
 317
 318 static const bfd_arch_info_type * const bfd_archures_list[] = {
 319 #ifdef SELECT_ARCHITECTURES
 320   SELECT_ARCHITECTURES,
 321 #else
 322   &bfd_a29k_arch,
 323   &bfd_alpha_arch,
 324   &bfd_arc_arch,
 325   &bfd_arm_arch,
 326   &bfd_cris_arch,
 327   &bfd_d10v_arch,
 328   &bfd_d30v_arch,
 329   &bfd_h8300_arch,
 330   &bfd_h8500_arch,
 331   &bfd_hppa_arch,
 332   &bfd_i370_arch,
 333   &bfd_i386_arch,
 334   &bfd_i860_arch,
 335   &bfd_i960_arch,
 336   &bfd_m32r_arch,
 337   &bfd_m68hc11_arch,
 338   &bfd_m68hc12_arch,
 339   &bfd_m68k_arch,
 340   &bfd_m88k_arch,
 341   &bfd_mips_arch,
 342   &bfd_mn10200_arch,
 343   &bfd_mn10300_arch,
 344   &bfd_powerpc_arch,
 345   &bfd_rs6000_arch,
 346   &bfd_sh_arch,
 347   &bfd_sparc_arch,
 348   &bfd_tic30_arch,
 349   &bfd_tic54x_arch,
 350   &bfd_tic80_arch,
 351   &bfd_vax_arch,
 352   &bfd_we32k_arch,
 353   &bfd_z8k_arch,
 354   &bfd_ns32k_arch,
 355   &bfd_w65_arch,
 356   &bfd_v850_arch,
 357   &bfd_fr30_arch,
 358   &bfd_mcore_arch,
 359   &bfd_avr_arch,
 360   &bfd_ia64_arch,
 361 #endif
 362   0
 363 };
 364
 365 /*
 366 FUNCTION
 367         bfd_printable_name
 368
 369 SYNOPSIS
 370         const char *bfd_printable_name(bfd *abfd);
 371
 372 DESCRIPTION
 373         Return a printable string representing the architecture and machine
 374         from the pointer to the architecture info structure.
 375
 376 */
 377
 378 const char *
 379 bfd_printable_name (abfd)
 380      bfd *abfd;
 381 {
 382   return abfd->arch_info->printable_name;
 383 }
 384
 385 /*
 386 FUNCTION
 387         bfd_scan_arch
 388
 389 SYNOPSIS
 390         const bfd_arch_info_type *bfd_scan_arch(const char *string);
 391
 392 DESCRIPTION
 393         Figure out if BFD supports any cpu which could be described with
 394         the name @var{string}.  Return a pointer to an <<arch_info>>
 395         structure if a machine is found, otherwise NULL.
 396 */
 397
 398 const bfd_arch_info_type *
 399 bfd_scan_arch (string)
 400      const char *string;
 401 {
 402   const bfd_arch_info_type * const *app, *ap;
 403
 404   /* Look through all the installed architectures.  */
 405   for (app = bfd_archures_list; *app != NULL; app++)
 406     {
 407       for (ap = *app; ap != NULL; ap = ap->next)
 408         {
 409           if (ap->scan (ap, string))
 410             return ap;
 411         }
 412     }
 413
 414   return NULL;
 415 }
 416
 417 /*
 418 FUNCTION
 419         bfd_arch_list
 420
 421 SYNOPSIS
 422         const char **bfd_arch_list(void);
 423
 424 DESCRIPTION
 425         Return a freshly malloced NULL-terminated vector of the names
 426         of all the valid BFD architectures.  Do not modify the names.
 427 */
 428
 429 const char **
 430 bfd_arch_list ()
 431 {
 432   int vec_length = 0;
 433   const char **name_ptr;
 434   const char **name_list;
 435   const bfd_arch_info_type * const *app;
 436
 437   /* Determine the number of architectures.  */
 438   vec_length = 0;
 439   for (app = bfd_archures_list; *app != NULL; app++)
 440     {
 441       const bfd_arch_info_type *ap;
 442       for (ap = *app; ap != NULL; ap = ap->next)
 443         {
 444           vec_length++;
 445         }
 446     }
 447
 448   name_list = (const char **)
 449     bfd_malloc ((vec_length + 1) * sizeof (char **));
 450   if (name_list == NULL)
 451     return NULL;
 452
 453   /* Point the list at each of the names.  */
 454   name_ptr = name_list;
 455   for (app = bfd_archures_list; *app != NULL; app++)
 456     {
 457       const bfd_arch_info_type *ap;
 458       for (ap = *app; ap != NULL; ap = ap->next)
 459         {
 460           *name_ptr = ap->printable_name;
 461           name_ptr++;
 462         }
 463     }
 464   *name_ptr = NULL;
 465
 466   return name_list;
 467 }
 468
 469 /*
 470 FUNCTION
 471         bfd_arch_get_compatible
 472
 473 SYNOPSIS
 474         const bfd_arch_info_type *bfd_arch_get_compatible(
 475                 const bfd *abfd,
 476                 const bfd *bbfd);
 477
 478 DESCRIPTION
 479         Determine whether two BFDs'
 480         architectures and machine types are compatible.  Calculates
 481         the lowest common denominator between the two architectures
 482         and machine types implied by the BFDs and returns a pointer to
 483         an <<arch_info>> structure describing the compatible machine.
 484 */
 485
 486 const bfd_arch_info_type *
 487 bfd_arch_get_compatible (abfd, bbfd)
 488      const bfd *abfd;
 489      const bfd *bbfd;
 490 {
 491   /* If either architecture is unknown, then all we can do is assume
 492      the user knows what he's doing.  */
 493   if (abfd->arch_info->arch == bfd_arch_unknown)
 494     return bbfd->arch_info;
 495   if (bbfd->arch_info->arch == bfd_arch_unknown)
 496     return abfd->arch_info;
 497
 498   /* Otherwise architecture-specific code has to decide.  */
 499   return abfd->arch_info->compatible (abfd->arch_info, bbfd->arch_info);
 500 }
 501
 502 /*
 503 INTERNAL_DEFINITION
 504         bfd_default_arch_struct
 505
 506 DESCRIPTION
 507         The <<bfd_default_arch_struct>> is an item of
 508         <<bfd_arch_info_type>> which has been initialized to a fairly
 509         generic state.  A BFD starts life by pointing to this
 510         structure, until the correct back end has determined the real
 511         architecture of the file.
 512
 513 .extern const bfd_arch_info_type bfd_default_arch_struct;
 514 */
 515
 516 const bfd_arch_info_type bfd_default_arch_struct = {
 517   32, 32, 8, bfd_arch_unknown, 0, "unknown", "unknown", 2, true,
 518   bfd_default_compatible,
 519   bfd_default_scan,
 520   0,
 521 };
 522
 523 /*
 524 FUNCTION
 525         bfd_set_arch_info
 526
 527 SYNOPSIS
 528         void bfd_set_arch_info(bfd *abfd, const bfd_arch_info_type *arg);
 529
 530 DESCRIPTION
 531         Set the architecture info of @var{abfd} to @var{arg}.
 532 */
 533
 534 void
 535 bfd_set_arch_info (abfd, arg)
 536      bfd *abfd;
 537      const bfd_arch_info_type *arg;
 538 {
 539   abfd->arch_info = arg;
 540 }
 541
 542 /*
 543 INTERNAL_FUNCTION
 544         bfd_default_set_arch_mach
 545
 546 SYNOPSIS
 547         boolean bfd_default_set_arch_mach(bfd *abfd,
 548                 enum bfd_architecture arch,
 549                 unsigned long mach);
 550
 551 DESCRIPTION
 552         Set the architecture and machine type in BFD @var{abfd}
 553         to @var{arch} and @var{mach}.  Find the correct
 554         pointer to a structure and insert it into the <<arch_info>>
 555         pointer.
 556 */
 557
 558 boolean
 559 bfd_default_set_arch_mach (abfd, arch, mach)
 560      bfd *abfd;
 561      enum bfd_architecture arch;
 562      unsigned long mach;
 563 {
 564   const bfd_arch_info_type * const *app, *ap;
 565
 566   for (app = bfd_archures_list; *app != NULL; app++)
 567     {
 568       for (ap = *app; ap != NULL; ap = ap->next)
 569         {
 570           if (ap->arch == arch
 571               && (ap->mach == mach
 572                   || (mach == 0 && ap->the_default)))
 573             {
 574               abfd->arch_info = ap;
 575               return true;
 576             }
 577         }
 578     }
 579
 580   abfd->arch_info = &bfd_default_arch_struct;
 581   bfd_set_error (bfd_error_bad_value);
 582   return false;
 583 }
 584
 585 /*
 586 FUNCTION
 587         bfd_get_arch
 588
 589 SYNOPSIS
 590         enum bfd_architecture bfd_get_arch(bfd *abfd);
 591
 592 DESCRIPTION
 593         Return the enumerated type which describes the BFD @var{abfd}'s
 594         architecture.
 595 */
 596
 597 enum bfd_architecture
 598 bfd_get_arch (abfd)
 599      bfd *abfd;
 600 {
 601   return abfd->arch_info->arch;
 602 }
 603
 604 /*
 605 FUNCTION
 606         bfd_get_mach
 607
 608 SYNOPSIS
 609         unsigned long bfd_get_mach(bfd *abfd);
 610
 611 DESCRIPTION
 612         Return the long type which describes the BFD @var{abfd}'s
 613         machine.
 614 */
 615
 616 unsigned long
 617 bfd_get_mach (abfd)
 618      bfd *abfd;
 619 {
 620   return abfd->arch_info->mach;
 621 }
 622
 623 /*
 624 FUNCTION
 625         bfd_arch_bits_per_byte
 626
 627 SYNOPSIS
 628         unsigned int bfd_arch_bits_per_byte(bfd *abfd);
 629
 630 DESCRIPTION
 631         Return the number of bits in one of the BFD @var{abfd}'s
 632         architecture's bytes.
 633 */
 634
 635 unsigned int
 636 bfd_arch_bits_per_byte (abfd)
 637      bfd *abfd;
 638 {
 639   return abfd->arch_info->bits_per_byte;
 640 }
 641
 642 /*
 643 FUNCTION
 644         bfd_arch_bits_per_address
 645
 646 SYNOPSIS
 647         unsigned int bfd_arch_bits_per_address(bfd *abfd);
 648
 649 DESCRIPTION
 650         Return the number of bits in one of the BFD @var{abfd}'s
 651         architecture's addresses.
 652 */
 653
 654 unsigned int
 655 bfd_arch_bits_per_address (abfd)
 656      bfd *abfd;
 657 {
 658   return abfd->arch_info->bits_per_address;
 659 }
 660
 661 /*
 662 INTERNAL_FUNCTION
 663         bfd_default_compatible
 664
 665 SYNOPSIS
 666         const bfd_arch_info_type *bfd_default_compatible
 667         (const bfd_arch_info_type *a,
 668         const bfd_arch_info_type *b);
 669
 670 DESCRIPTION
 671         The default function for testing for compatibility.
 672 */
 673
 674 const bfd_arch_info_type *
 675 bfd_default_compatible (a, b)
 676      const bfd_arch_info_type *a;
 677      const bfd_arch_info_type *b;
 678 {
 679   if (a->arch != b->arch)
 680     return NULL;
 681
 682   if (a->mach > b->mach)
 683     return a;
 684
 685   if (b->mach > a->mach)
 686     return b;
 687
 688   return a;
 689 }
 690
 691 /*
 692 INTERNAL_FUNCTION
 693         bfd_default_scan
 694
 695 SYNOPSIS
 696         boolean bfd_default_scan(const struct bfd_arch_info *info, const char *string);
 697
 698 DESCRIPTION
 699         The default function for working out whether this is an
 700         architecture hit and a machine hit.
 701 */
 702
 703 boolean
 704 bfd_default_scan (info, string)
 705      const struct bfd_arch_info *info;
 706      const char *string;
 707 {
 708   const char *ptr_src;
 709   const char *ptr_tst;
 710   unsigned long number;
 711   enum bfd_architecture arch;
 712   const char *printable_name_colon;
 713
 714   /* Exact match of the architecture name (ARCH_NAME) and also the
 715      default architecture?  */
 716   if (strcasecmp (string, info->arch_name) == 0
 717       && info->the_default)
 718     return true;
 719
 720   /* Exact match of the machine name (PRINTABLE_NAME)?  */
 721   if (strcasecmp (string, info->printable_name) == 0)
 722     return true;
 723
 724   /* Given that printable_name contains no colon, attempt to match:
 725      ARCH_NAME [ ":" ] PRINTABLE_NAME?  */
 726   printable_name_colon = strchr (info->printable_name, ':');
 727   if (printable_name_colon == NULL)
 728     {
 729       int strlen_arch_name = strlen (info->arch_name);
 730       if (strncasecmp (string, info->arch_name, strlen_arch_name) == 0)
 731         {
 732           if (string[strlen_arch_name] == ':')
 733             {
 734               if (strcasecmp (string + strlen_arch_name + 1,
 735                               info->printable_name) == 0)
 736                 return true;
 737             }
 738           else
 739             {
 740               if (strcasecmp (string + strlen_arch_name,
 741                               info->printable_name) == 0)
 742                 return true;
 743             }
 744         }
 745     }
 746
 747   /* Given that PRINTABLE_NAME has the form: <arch> ":" <mach>;
 748      Attempt to match: <arch> <mach>?  */
 749   if (printable_name_colon != NULL)
 750     {
 751       int colon_index = printable_name_colon - info->printable_name;
 752       if (strncasecmp (string, info->printable_name, colon_index) == 0
 753           && strcasecmp (string + colon_index,
 754                          info->printable_name + colon_index + 1) == 0)
 755         return true;
 756     }
 757
 758   /* Given that PRINTABLE_NAME has the form: <arch> ":" <mach>; Do not
 759      attempt to match just <mach>, it could be ambigious.  This test
 760      is left until later.  */
 761
 762   /* NOTE: The below is retained for compatibility only.  Please do
 763      not add to this code.  */
 764
 765   /* See how much of the supplied string matches with the
 766      architecture, eg the string m68k:68020 would match the 68k entry
 767      up to the :, then we get left with the machine number.  */
 768
 769   for (ptr_src = string, ptr_tst = info->arch_name;
 770        *ptr_src && *ptr_tst;
 771        ptr_src++, ptr_tst++)
 772     {
 773       if (*ptr_src != *ptr_tst)
 774         break;
 775     }
 776
 777   /* Chewed up as much of the architecture as will match, skip any
 778      colons.  */
 779   if (*ptr_src == ':')
 780     ptr_src++;
 781
 782   if (*ptr_src == 0)
 783     {
 784       /* Nothing more, then only keep this one if it is the default
 785          machine for this architecture.  */
 786       return info->the_default;
 787     }
 788
 789   number = 0;
 790   while (isdigit ((unsigned char) *ptr_src))
 791     {
 792       number = number * 10 + *ptr_src - '0';
 793       ptr_src++;
 794     }
 795
 796   /* NOTE: The below is retained for compatibility only.
 797      PLEASE DO NOT ADD TO THIS CODE.  */
 798
 799   switch (number)
 800     {
 801       /* FIXME: These are needed to parse IEEE objects.  */
 802       /* The following seven case's are here only for compatibility with
 803          older binutils (at least IEEE objects from binutils 2.9.1 require
 804          them).  */
 805     case bfd_mach_m68000:
 806     case bfd_mach_m68010:
 807     case bfd_mach_m68020:
 808     case bfd_mach_m68030:
 809     case bfd_mach_m68040:
 810     case bfd_mach_m68060:
 811     case bfd_mach_cpu32:
 812       arch = bfd_arch_m68k;
 813       break;
 814     case 68000:
 815       arch = bfd_arch_m68k;
 816       number = bfd_mach_m68000;
 817       break;
 818     case 68010:
 819       arch = bfd_arch_m68k;
 820       number = bfd_mach_m68010;
 821       break;
 822     case 68020:
 823       arch = bfd_arch_m68k;
 824       number = bfd_mach_m68020;
 825       break;
 826     case 68030:
 827       arch = bfd_arch_m68k;
 828       number = bfd_mach_m68030;
 829       break;
 830     case 68040:
 831       arch = bfd_arch_m68k;
 832       number = bfd_mach_m68040;
 833       break;
 834     case 68060:
 835       arch = bfd_arch_m68k;
 836       number = bfd_mach_m68060;
 837       break;
 838     case 68332:
 839       arch = bfd_arch_m68k;
 840       number = bfd_mach_cpu32;
 841       break;
 842
 843     case 32000:
 844       arch = bfd_arch_we32k;
 845       break;
 846
 847     case 3000:
 848       arch = bfd_arch_mips;
 849       number = bfd_mach_mips3000;
 850       break;
 851
 852     case 4000:
 853       arch = bfd_arch_mips;
 854       number = bfd_mach_mips4000;
 855       break;
 856
 857     case 6000:
 858       arch = bfd_arch_rs6000;
 859       break;
 860
 861     case 7410:
 862       arch = bfd_arch_sh;
 863       number = bfd_mach_sh_dsp;
 864       break;
 865
 866     case 7708:
 867       arch = bfd_arch_sh;
 868       number = bfd_mach_sh3;
 869       break;
 870
 871     case 7729:
 872       arch = bfd_arch_sh;
 873       number = bfd_mach_sh3_dsp;
 874       break;
 875
 876     case 7750:
 877       arch = bfd_arch_sh;
 878       number = bfd_mach_sh4;
 879       break;
 880
 881     default:
 882       return false;
 883     }
 884
 885   if (arch != info->arch)
 886     return false;
 887
 888   if (number != info->mach)
 889     return false;
 890
 891   return true;
 892 }
 893
 894 /*
 895 FUNCTION
 896         bfd_get_arch_info
 897
 898 SYNOPSIS
 899         const bfd_arch_info_type * bfd_get_arch_info(bfd *abfd);
 900
 901 DESCRIPTION
 902         Return the architecture info struct in @var{abfd}.
 903 */
 904
 905 const bfd_arch_info_type *
 906 bfd_get_arch_info (abfd)
 907      bfd *abfd;
 908 {
 909   return abfd->arch_info;
 910 }
 911
 912 /*
 913 FUNCTION
 914         bfd_lookup_arch
 915
 916 SYNOPSIS
 917         const bfd_arch_info_type *bfd_lookup_arch
 918                 (enum bfd_architecture
 919                 arch,
 920                 unsigned long machine);
 921
 922 DESCRIPTION
 923         Look for the architecure info structure which matches the
 924         arguments @var{arch} and @var{machine}. A machine of 0 matches the
 925         machine/architecture structure which marks itself as the
 926         default.
 927 */
 928
 929 const bfd_arch_info_type *
 930 bfd_lookup_arch (arch, machine)
 931      enum bfd_architecture arch;
 932      unsigned long machine;
 933 {
 934   const bfd_arch_info_type * const *app, *ap;
 935
 936   for (app = bfd_archures_list; *app != NULL; app++)
 937     {
 938       for (ap = *app; ap != NULL; ap = ap->next)
 939         {
 940           if (ap->arch == arch
 941               && (ap->mach == machine
 942                   || (machine == 0 && ap->the_default)))
 943             return ap;
 944         }
 945     }
 946
 947   return NULL;
 948 }
 949
 950 /*
 951 FUNCTION
 952         bfd_printable_arch_mach
 953
 954 SYNOPSIS
 955         const char *bfd_printable_arch_mach
 956                 (enum bfd_architecture arch, unsigned long machine);
 957
 958 DESCRIPTION
 959         Return a printable string representing the architecture and
 960         machine type.
 961
 962         This routine is depreciated.
 963 */
 964
 965 const char *
 966 bfd_printable_arch_mach (arch, machine)
 967      enum bfd_architecture arch;
 968      unsigned long machine;
 969 {
 970   const bfd_arch_info_type *ap = bfd_lookup_arch (arch, machine);
 971
 972   if (ap)
 973     return ap->printable_name;
 974   return "UNKNOWN!";
 975 }
 976
 977 /*
 978 FUNCTION
 979         bfd_octets_per_byte
 980
 981 SYNOPSIS
 982         unsigned int bfd_octets_per_byte(bfd *abfd);
 983
 984 DESCRIPTION
 985         Return the number of octets (8-bit quantities) per target byte
 986         (minimum addressable unit).  In most cases, this will be one, but some
 987         DSP targets have 16, 32, or even 48 bits per byte.
 988 */
 989
 990 unsigned int
 991 bfd_octets_per_byte (abfd)
 992      bfd *abfd;
 993 {
 994   return bfd_arch_mach_octets_per_byte (bfd_get_arch (abfd),
 995                                         bfd_get_mach (abfd));
 996 }
 997
 998 /*
 999 FUNCTION
1000         bfd_arch_mach_octets_per_byte
1001
1002 SYNOPSIS
1003         unsigned int bfd_arch_mach_octets_per_byte(enum bfd_architecture arch,
1004                                                    unsigned long machine);
1005
1006 DESCRIPTION
1007         See bfd_octets_per_byte.
1008
1009         This routine is provided for those cases where a bfd * is not
1010         available
1011 */
1012
1013 unsigned int
1014 bfd_arch_mach_octets_per_byte (arch, mach)
1015      enum bfd_architecture arch;
1016      unsigned long mach;
1017 {
1018   const bfd_arch_info_type *ap = bfd_lookup_arch (arch, mach);
1019
1020   if (ap)
1021     return ap->bits_per_byte / 8;
1022   return 1;
1023 }