bfd/archures.c

   1 /* BFD library support routines for architectures.
   2    Copyright (C) 1990, 91-97, 1998 Free Software Foundation, Inc.
   3    Hacked by John Gilmore and Steve Chamberlain of Cygnus Support.
   4
   5 This file is part of BFD, the Binary File Descriptor library.
   6
   7 This program is free software; you can redistribute it and/or modify
   8 it under the terms of the GNU General Public License as published by
   9 the Free Software Foundation; either version 2 of the License, or
  10 (at your option) any later version.
  11
  12 This program is distributed in the hope that it will be useful,
  13 but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 GNU General Public License for more details.
  16
  17 You should have received a copy of the GNU General Public License
  18 along with this program; if not, write to the Free Software
  19 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
  20
  21 #include "bfd.h"
  22 #include "sysdep.h"
  23 #include "libbfd.h"
  24 #include <ctype.h>
  25
  26 /*
  27
  28 SECTION
  29         Architectures
  30
  31         BFD keeps one atom in a BFD describing the
  32         architecture of the data attached to the BFD: a pointer to a
  33         <<bfd_arch_info_type>>.
  34
  35         Pointers to structures can be requested independently of a BFD
  36         so that an architecture's information can be interrogated
  37         without access to an open BFD.
  38
  39         The architecture information is provided by each architecture package.
  40         The set of default architectures is selected by the macro
  41         <<SELECT_ARCHITECTURES>>.  This is normally set up in the
  42         @file{config/@var{target}.mt} file of your choice.  If the name is not
  43         defined, then all the architectures supported are included.
  44
  45         When BFD starts up, all the architectures are called with an
  46         initialize method.  It is up to the architecture back end to
  47         insert as many items into the list of architectures as it wants to;
  48         generally this would be one for each machine and one for the
  49         default case (an item with a machine field of 0).
  50
  51         BFD's idea of an architecture is implemented in @file{archures.c}.
  52 */
  53
  54 /*
  55
  56 SUBSECTION
  57         bfd_architecture
  58
  59 DESCRIPTION
  60         This enum gives the object file's CPU architecture, in a
  61         global sense---i.e., what processor family does it belong to?
  62         Another field indicates which processor within
  63         the family is in use.  The machine gives a number which
  64         distinguishes different versions of the architecture,
  65         containing, for example, 2 and 3 for Intel i960 KA and i960 KB,
  66         and 68020 and 68030 for Motorola 68020 and 68030.
  67
  68 .enum bfd_architecture
  69 .{
  70 .  bfd_arch_unknown,   {* File arch not known *}
  71 .  bfd_arch_obscure,   {* Arch known, not one of these *}
  72 .  bfd_arch_m68k,      {* Motorola 68xxx *}
  73 .#define bfd_mach_m68000 1
  74 .#define bfd_mach_m68008 2
  75 .#define bfd_mach_m68010 3
  76 .#define bfd_mach_m68020 4
  77 .#define bfd_mach_m68030 5
  78 .#define bfd_mach_m68040 6
  79 .#define bfd_mach_m68060 7
  80 .#define bfd_mach_cpu32  8
  81 .  bfd_arch_vax,       {* DEC Vax *}
  82 .  bfd_arch_i960,      {* Intel 960 *}
  83 .    {* The order of the following is important.
  84 .       lower number indicates a machine type that
  85 .       only accepts a subset of the instructions
  86 .       available to machines with higher numbers.
  87 .       The exception is the "ca", which is
  88 .       incompatible with all other machines except
  89 .       "core". *}
  90 .
  91 .#define bfd_mach_i960_core      1
  92 .#define bfd_mach_i960_ka_sa     2
  93 .#define bfd_mach_i960_kb_sb     3
  94 .#define bfd_mach_i960_mc        4
  95 .#define bfd_mach_i960_xa        5
  96 .#define bfd_mach_i960_ca        6
  97 .#define bfd_mach_i960_jx        7
  98 .#define bfd_mach_i960_hx        8
  99 .
 100 .  bfd_arch_a29k,      {* AMD 29000 *}
 101 .  bfd_arch_sparc,     {* SPARC *}
 102 .#define bfd_mach_sparc                 1
 103 .{* The difference between v8plus and v9 is that v9 is a true 64 bit env.  *}
 104 .#define bfd_mach_sparc_sparclet        2
 105 .#define bfd_mach_sparc_sparclite       3
 106 .#define bfd_mach_sparc_v8plus          4
 107 .#define bfd_mach_sparc_v8plusa         5 {* with ultrasparc add'ns *}
 108 .#define bfd_mach_sparc_sparclite_le    6
 109 .#define bfd_mach_sparc_v9              7
 110 .#define bfd_mach_sparc_v9a             8 {* with ultrasparc add'ns *}
 111 .{* Nonzero if MACH has the v9 instruction set.  *}
 112 .#define bfd_mach_sparc_v9_p(mach) \
 113 .  ((mach) >= bfd_mach_sparc_v8plus && (mach) <= bfd_mach_sparc_v9a)
 114 .  bfd_arch_mips,      {* MIPS Rxxxx *}
 115 . {* start-sanitize-tx19 *}
 116 .#define bfd_mach_mips1900              1900
 117 . {* end-sanitize-tx19 *}
 118 .#define bfd_mach_mips3000              3000
 119 .#define bfd_mach_mips3900              3900
 120 .#define bfd_mach_mips4000              4000
 121 .#define bfd_mach_mips4010              4010
 122 .#define bfd_mach_mips4100              4100
 123 . {* start-sanitize-vr4xxx *}
 124 .#define bfd_mach_mips4111              4111
 125 .#define bfd_mach_mips4121              4121
 126 . {* end-sanitize-vr4xxx *}
 127 .#define bfd_mach_mips4300              4300
 128 .#define bfd_mach_mips4400              4400
 129 .#define bfd_mach_mips4600              4600
 130 .#define bfd_mach_mips4650              4650
 131 . {* start-sanitize-vr4320 *}
 132 .#define bfd_mach_mips4320              4320
 133 . {* end-sanitize-vr4320 *}
 134 . {* start-sanitize-tx49 *}
 135 .#define bfd_mach_mips4900              4900
 136 . {* end-sanitize-tx49 *}
 137 .#define bfd_mach_mips5000              5000
 138 . {* start-sanitize-cygnus *}
 139 .#define bfd_mach_mips5400              5400
 140 . {* end-sanitize-cygnus *}
 141 . {* start-sanitize-r5900 *}
 142 .#define bfd_mach_mips5900              5900
 143 . {* end-sanitize-r5900 *}
 144 .#define bfd_mach_mips6000              6000
 145 .#define bfd_mach_mips8000              8000
 146 .#define bfd_mach_mips10000             10000
 147 .#define bfd_mach_mips16                16
 148 . {* start-sanitize-sky *}
 149 . {* The DVP is a machine within the mips architecture.  *}
 150 .#define bfd_mach_dvp_dma               42000
 151 .#define bfd_mach_dvp_vif               42001
 152 .#define bfd_mach_dvp_vu                42002
 153 .#define bfd_mach_dvp_gif               42003
 154 .#define bfd_mach_dvp_p(mach) ((mach) >= 42000 && (mach) <= 42003)
 155 . {* end-sanitize-sky *}
 156 .  bfd_arch_i386,      {* Intel 386 *}
 157 .#define bfd_mach_i386_i386 0
 158 .#define bfd_mach_i386_i8086 1
 159 .#define bfd_mach_i386_i386_intel_syntax 2
 160 .  bfd_arch_we32k,     {* AT&T WE32xxx *}
 161 .  bfd_arch_tahoe,     {* CCI/Harris Tahoe *}
 162 .  bfd_arch_i860,      {* Intel 860 *}
 163 .  bfd_arch_romp,      {* IBM ROMP PC/RT *}
 164 .  bfd_arch_alliant,   {* Alliant *}
 165 .  bfd_arch_convex,    {* Convex *}
 166 .  bfd_arch_m88k,      {* Motorola 88xxx *}
 167 .  bfd_arch_pyramid,   {* Pyramid Technology *}
 168 .  bfd_arch_h8300,     {* Hitachi H8/300 *}
 169 .#define bfd_mach_h8300   1
 170 .#define bfd_mach_h8300h  2
 171 .#define bfd_mach_h8300s  3
 172 .  bfd_arch_powerpc,   {* PowerPC *}
 173 .  bfd_arch_rs6000,    {* IBM RS/6000 *}
 174 .  bfd_arch_hppa,      {* HP PA RISC *}
 175 .  bfd_arch_d10v,      {* Mitsubishi D10V *}
 176 .  bfd_arch_d30v,      {* Mitsubishi D30V *}
 177 .  bfd_arch_z8k,       {* Zilog Z8000 *}
 178 .#define bfd_mach_z8001         1
 179 .#define bfd_mach_z8002         2
 180 .  bfd_arch_h8500,     {* Hitachi H8/500 *}
 181 .  bfd_arch_sh,        {* Hitachi SH *}
 182 .#define bfd_mach_sh            0
 183 .#define bfd_mach_sh3        0x30
 184 .#define bfd_mach_sh3e       0x3e
 185 .#define bfd_mach_sh4        0x40
 186 .  bfd_arch_alpha,     {* Dec Alpha *}
 187 .#define bfd_mach_alpha_ev4  0x10
 188 .#define bfd_mach_alpha_ev5  0x20
 189 .#define bfd_mach_alpha_ev6  0x30
 190 .  bfd_arch_arm,       {* Advanced Risc Machines ARM *}
 191 .#define bfd_mach_arm_2         1
 192 .#define bfd_mach_arm_2a                2
 193 .#define bfd_mach_arm_3         3
 194 .#define bfd_mach_arm_3M        4
 195 .#define bfd_mach_arm_4                 5
 196 .#define bfd_mach_arm_4T        6
 197 .  bfd_arch_ns32k,     {* National Semiconductors ns32000 *}
 198 .  bfd_arch_w65,       {* WDC 65816 *}
 199 .  bfd_arch_tic30,     {* Texas Instruments TMS320C30 *}
 200 . {* start-sanitize-tic80 *}
 201 .  bfd_arch_tic80,     {* TI TMS320c80 (MVP) *}
 202 . {* end-sanitize-tic80 *}
 203 .  bfd_arch_v850,      {* NEC V850 *}
 204 .#define bfd_mach_v850          0
 205 . {* start-sanitize-v850e *}
 206 .#define bfd_mach_v850e         'E'
 207 .#define bfd_mach_v850ea        'A'
 208 . {* end-sanitize-v850e *}
 209 .  bfd_arch_arc,       {* Argonaut RISC Core *}
 210 .#define bfd_mach_arc_base 0
 211 .  bfd_arch_m32r,      {* Mitsubishi M32R/D *}
 212 .#define bfd_mach_m32r          0 {* backwards compatibility *}
 213 . {* start-sanitize-m32rx *}
 214 .#define bfd_mach_m32rx         'x'
 215 . {* end-sanitize-m32rx *}
 216 .  bfd_arch_mn10200,   {* Matsushita MN10200 *}
 217 .  bfd_arch_mn10300,   {* Matsushita MN10300 *}
 218 .#define bfd_mach_mn10300               300
 219 . {* start-sanitize-cygnus *}
 220 .#define bfd_mach_am33          330
 221 . {* end-sanitize-cygnus *}
 222 .  bfd_arch_fr30,
 223 .#define bfd_mach_fr30          0x46523330
 224 .  bfd_arch_last
 225 .  };
 226
 227
 228 */
 229
 230 /*
 231
 232 SUBSECTION
 233         bfd_arch_info
 234
 235 DESCRIPTION
 236         This structure contains information on architectures for use
 237         within BFD.
 238
 239 .
 240 .typedef struct bfd_arch_info
 241 .{
 242 .  int bits_per_word;
 243 .  int bits_per_address;
 244 .  int bits_per_byte;
 245 .  enum bfd_architecture arch;
 246 .  unsigned long mach;
 247 .  const char *arch_name;
 248 .  const char *printable_name;
 249 .  unsigned int section_align_power;
 250 . {* true if this is the default machine for the architecture *}
 251 .  boolean the_default;
 252 .  const struct bfd_arch_info * (*compatible)
 253 .       PARAMS ((const struct bfd_arch_info *a,
 254 .                const struct bfd_arch_info *b));
 255 .
 256 .  boolean (*scan) PARAMS ((const struct bfd_arch_info *, const char *));
 257 .
 258 .  const struct bfd_arch_info *next;
 259 .} bfd_arch_info_type;
 260 */
 261
 262 extern const bfd_arch_info_type bfd_a29k_arch;
 263 extern const bfd_arch_info_type bfd_alpha_arch;
 264 extern const bfd_arch_info_type bfd_arc_arch;
 265 extern const bfd_arch_info_type bfd_arm_arch;
 266 extern const bfd_arch_info_type bfd_d10v_arch;
 267 extern const bfd_arch_info_type bfd_d30v_arch;
 268 extern const bfd_arch_info_type bfd_h8300_arch;
 269 extern const bfd_arch_info_type bfd_h8500_arch;
 270 extern const bfd_arch_info_type bfd_hppa_arch;
 271 extern const bfd_arch_info_type bfd_i386_arch;
 272 extern const bfd_arch_info_type bfd_i860_arch;
 273 extern const bfd_arch_info_type bfd_i960_arch;
 274 extern const bfd_arch_info_type bfd_m32r_arch;
 275 extern const bfd_arch_info_type bfd_m68k_arch;
 276 extern const bfd_arch_info_type bfd_m88k_arch;
 277 extern const bfd_arch_info_type bfd_mips_arch;
 278 extern const bfd_arch_info_type bfd_mn10200_arch;
 279 extern const bfd_arch_info_type bfd_mn10300_arch;
 280 extern const bfd_arch_info_type bfd_powerpc_arch;
 281 extern const bfd_arch_info_type bfd_rs6000_arch;
 282 extern const bfd_arch_info_type bfd_sh_arch;
 283 extern const bfd_arch_info_type bfd_sparc_arch;
 284 extern const bfd_arch_info_type bfd_tic30_arch;
 285 /* start-sanitize-tic80 */
 286 extern const bfd_arch_info_type bfd_tic80_arch;
 287 /* end-sanitize-tic80 */
 288 extern const bfd_arch_info_type bfd_vax_arch;
 289 extern const bfd_arch_info_type bfd_we32k_arch;
 290 extern const bfd_arch_info_type bfd_z8k_arch;
 291 extern const bfd_arch_info_type bfd_ns32k_arch;
 292 extern const bfd_arch_info_type bfd_w65_arch;
 293 extern const bfd_arch_info_type bfd_v850_arch;
 294 extern const bfd_arch_info_type bfd_fr30_arch;
 295
 296 static const bfd_arch_info_type * const bfd_archures_list[] =
 297 {
 298 #ifdef SELECT_ARCHITECTURES
 299   SELECT_ARCHITECTURES,
 300 #else
 301   &bfd_a29k_arch,
 302   &bfd_alpha_arch,
 303   &bfd_arc_arch,
 304   &bfd_arm_arch,
 305   &bfd_d10v_arch,
 306   &bfd_d30v_arch,
 307   &bfd_h8300_arch,
 308   &bfd_h8500_arch,
 309   &bfd_hppa_arch,
 310   &bfd_i386_arch,
 311   &bfd_i860_arch,
 312   &bfd_i960_arch,
 313   &bfd_m32r_arch,
 314   &bfd_m68k_arch,
 315   &bfd_m88k_arch,
 316   &bfd_mips_arch,
 317   &bfd_mn10200_arch,
 318   &bfd_mn10300_arch,
 319   &bfd_powerpc_arch,
 320   &bfd_rs6000_arch,
 321   &bfd_sh_arch,
 322   &bfd_sparc_arch,
 323   &bfd_tic30_arch,
 324 /* start-sanitize-tic80 */
 325   &bfd_tic80_arch,
 326 /* end-sanitize-tic80 */
 327   &bfd_vax_arch,
 328   &bfd_we32k_arch,
 329   &bfd_z8k_arch,
 330   &bfd_ns32k_arch,
 331   &bfd_w65_arch,
 332   &bfd_v850_arch,
 333   & bfd_fr30_arch,
 334 #endif
 335   0
 336 };
 337
 338 /*
 339 FUNCTION
 340         bfd_printable_name
 341
 342 SYNOPSIS
 343         const char *bfd_printable_name(bfd *abfd);
 344
 345 DESCRIPTION
 346         Return a printable string representing the architecture and machine
 347         from the pointer to the architecture info structure.
 348
 349 */
 350
 351 const char *
 352 bfd_printable_name (abfd)
 353      bfd *abfd;
 354 {
 355   return abfd->arch_info->printable_name;
 356 }
 357
 358
 359
 360 /*
 361 FUNCTION
 362         bfd_scan_arch
 363
 364 SYNOPSIS
 365         const bfd_arch_info_type *bfd_scan_arch(const char *string);
 366
 367 DESCRIPTION
 368         Figure out if BFD supports any cpu which could be described with
 369         the name @var{string}.  Return a pointer to an <<arch_info>>
 370         structure if a machine is found, otherwise NULL.
 371
 372 */
 373
 374 const bfd_arch_info_type *
 375 bfd_scan_arch (string)
 376      const char *string;
 377 {
 378   const bfd_arch_info_type * const *app, *ap;
 379
 380   /* Look through all the installed architectures */
 381   for (app = bfd_archures_list; *app != NULL; app++)
 382     {
 383       for (ap = *app; ap != NULL; ap = ap->next)
 384         {
 385           if (ap->scan (ap, string))
 386             return ap;
 387         }
 388     }
 389
 390   return NULL;
 391 }
 392
 393
 394
 395 /*
 396 FUNCTION
 397         bfd_arch_list
 398
 399 SYNOPSIS
 400         const char **bfd_arch_list(void);
 401
 402 DESCRIPTION
 403         Return a freshly malloced NULL-terminated vector of the names
 404         of all the valid BFD architectures.  Do not modify the names.
 405
 406 */
 407
 408 const char **
 409 bfd_arch_list ()
 410 {
 411   int vec_length = 0;
 412   const char **name_ptr;
 413   const char **name_list;
 414   const bfd_arch_info_type * const *app;
 415
 416   /* Determine the number of architectures */
 417   vec_length = 0;
 418   for (app = bfd_archures_list; *app != NULL; app++)
 419     {
 420       const bfd_arch_info_type *ap;
 421       for (ap = *app; ap != NULL; ap = ap->next)
 422         {
 423           vec_length++;
 424         }
 425     }
 426
 427   name_list = (CONST char **)
 428     bfd_malloc ((vec_length + 1) * sizeof (char **));
 429   if (name_list == NULL)
 430     return NULL;
 431
 432   /* Point the list at each of the names */
 433   name_ptr = name_list;
 434   for (app = bfd_archures_list; *app != NULL; app++)
 435     {
 436       const bfd_arch_info_type *ap;
 437       for (ap = *app; ap != NULL; ap = ap->next)
 438         {
 439           *name_ptr = ap->printable_name;
 440           name_ptr++;
 441         }
 442     }
 443   *name_ptr = NULL;
 444
 445   return name_list;
 446 }
 447
 448
 449
 450 /*
 451 FUNCTION
 452         bfd_arch_get_compatible
 453
 454 SYNOPSIS
 455         const bfd_arch_info_type *bfd_arch_get_compatible(
 456                 const bfd *abfd,
 457                 const bfd *bbfd);
 458
 459 DESCRIPTION
 460         Determine whether two BFDs'
 461         architectures and machine types are compatible.  Calculates
 462         the lowest common denominator between the two architectures
 463         and machine types implied by the BFDs and returns a pointer to
 464         an <<arch_info>> structure describing the compatible machine.
 465 */
 466
 467 const bfd_arch_info_type *
 468 bfd_arch_get_compatible (abfd, bbfd)
 469      const bfd *abfd;
 470      const bfd *bbfd;
 471 {
 472   /* If either architecture is unknown, then all we can do is assume
 473      the user knows what he's doing.  */
 474   if (abfd->arch_info->arch == bfd_arch_unknown)
 475         return bbfd->arch_info;
 476   if (bbfd->arch_info->arch == bfd_arch_unknown)
 477         return abfd->arch_info;
 478
 479   /* Otherwise architecture-specific code has to decide.  */
 480   return abfd->arch_info->compatible (abfd->arch_info, bbfd->arch_info);
 481 }
 482
 483
 484 /*
 485 INTERNAL_DEFINITION
 486         bfd_default_arch_struct
 487
 488 DESCRIPTION
 489         The <<bfd_default_arch_struct>> is an item of
 490         <<bfd_arch_info_type>> which has been initialized to a fairly
 491         generic state.  A BFD starts life by pointing to this
 492         structure, until the correct back end has determined the real
 493         architecture of the file.
 494
 495 .extern const bfd_arch_info_type bfd_default_arch_struct;
 496
 497 */
 498
 499 const bfd_arch_info_type bfd_default_arch_struct =
 500 {
 501     32,32,8,bfd_arch_unknown,0,"unknown","unknown",2,true,
 502     bfd_default_compatible,
 503     bfd_default_scan,
 504     0,
 505 };
 506
 507 /*
 508 FUNCTION
 509         bfd_set_arch_info
 510
 511 SYNOPSIS
 512         void bfd_set_arch_info(bfd *abfd, const bfd_arch_info_type *arg);
 513
 514 DESCRIPTION
 515         Set the architecture info of @var{abfd} to @var{arg}.
 516 */
 517
 518 void
 519 bfd_set_arch_info (abfd, arg)
 520      bfd *abfd;
 521      const bfd_arch_info_type *arg;
 522 {
 523   abfd->arch_info = arg;
 524 }
 525
 526 /*
 527 INTERNAL_FUNCTION
 528         bfd_default_set_arch_mach
 529
 530 SYNOPSIS
 531         boolean bfd_default_set_arch_mach(bfd *abfd,
 532                 enum bfd_architecture arch,
 533                 unsigned long mach);
 534
 535 DESCRIPTION
 536         Set the architecture and machine type in BFD @var{abfd}
 537         to @var{arch} and @var{mach}.  Find the correct
 538         pointer to a structure and insert it into the <<arch_info>>
 539         pointer.
 540 */
 541
 542 boolean
 543 bfd_default_set_arch_mach (abfd, arch, mach)
 544      bfd *abfd;
 545      enum bfd_architecture arch;
 546      unsigned long mach;
 547 {
 548   const bfd_arch_info_type * const *app, *ap;
 549
 550   for (app = bfd_archures_list; *app != NULL; app++)
 551     {
 552       for (ap = *app; ap != NULL; ap = ap->next)
 553         {
 554           if (ap->arch == arch
 555               && (ap->mach == mach
 556                   || (mach == 0 && ap->the_default)))
 557             {
 558               abfd->arch_info = ap;
 559               return true;
 560             }
 561         }
 562     }
 563
 564   abfd->arch_info = &bfd_default_arch_struct;
 565   bfd_set_error (bfd_error_bad_value);
 566   return false;
 567 }
 568
 569
 570 /*
 571 FUNCTION
 572         bfd_get_arch
 573
 574 SYNOPSIS
 575         enum bfd_architecture bfd_get_arch(bfd *abfd);
 576
 577 DESCRIPTION
 578         Return the enumerated type which describes the BFD @var{abfd}'s
 579         architecture.
 580
 581 */
 582
 583 enum bfd_architecture
 584 bfd_get_arch (abfd)
 585      bfd *abfd;
 586 {
 587     return abfd->arch_info->arch;
 588 }
 589
 590 /*
 591 FUNCTION
 592         bfd_get_mach
 593
 594 SYNOPSIS
 595         unsigned long bfd_get_mach(bfd *abfd);
 596
 597 DESCRIPTION
 598         Return the long type which describes the BFD @var{abfd}'s
 599         machine.
 600 */
 601
 602 unsigned long
 603 bfd_get_mach (abfd)
 604      bfd *abfd;
 605 {
 606     return abfd->arch_info->mach;
 607 }
 608
 609 /*
 610 FUNCTION
 611         bfd_arch_bits_per_byte
 612
 613 SYNOPSIS
 614         unsigned int bfd_arch_bits_per_byte(bfd *abfd);
 615
 616 DESCRIPTION
 617         Return the number of bits in one of the BFD @var{abfd}'s
 618         architecture's bytes.
 619
 620 */
 621
 622 unsigned int
 623 bfd_arch_bits_per_byte (abfd)
 624      bfd *abfd;
 625 {
 626   return abfd->arch_info->bits_per_byte;
 627 }
 628
 629 /*
 630 FUNCTION
 631         bfd_arch_bits_per_address
 632
 633 SYNOPSIS
 634         unsigned int bfd_arch_bits_per_address(bfd *abfd);
 635
 636 DESCRIPTION
 637         Return the number of bits in one of the BFD @var{abfd}'s
 638         architecture's addresses.
 639 */
 640
 641 unsigned int
 642 bfd_arch_bits_per_address (abfd)
 643      bfd *abfd;
 644 {
 645   return abfd->arch_info->bits_per_address;
 646 }
 647
 648
 649 /*
 650 INTERNAL_FUNCTION
 651         bfd_default_compatible
 652
 653 SYNOPSIS
 654         const bfd_arch_info_type *bfd_default_compatible
 655         (const bfd_arch_info_type *a,
 656         const bfd_arch_info_type *b);
 657
 658 DESCRIPTION
 659         The default function for testing for compatibility.
 660 */
 661
 662 const bfd_arch_info_type *
 663 bfd_default_compatible (a,b)
 664      const bfd_arch_info_type *a;
 665      const bfd_arch_info_type *b;
 666 {
 667   if (a->arch != b->arch)
 668     return NULL;
 669
 670   if (a->mach > b->mach)
 671     return a;
 672
 673   if (b->mach > a->mach)
 674     return b;
 675
 676   return a;
 677 }
 678
 679
 680 /*
 681 INTERNAL_FUNCTION
 682         bfd_default_scan
 683
 684 SYNOPSIS
 685         boolean bfd_default_scan(const struct bfd_arch_info *info, const char *string);
 686
 687 DESCRIPTION
 688         The default function for working out whether this is an
 689         architecture hit and a machine hit.
 690 */
 691
 692 boolean
 693 bfd_default_scan (info, string)
 694      const struct bfd_arch_info *info;
 695      const char *string;
 696 {
 697   const char *ptr_src;
 698   const char *ptr_tst;
 699   unsigned long number;
 700   enum bfd_architecture arch;
 701   const char *printable_name_colon;
 702
 703   /* Exact match of the architecture name (ARCH_NAME) and also the
 704      default architecture? */
 705   if (strcasecmp (string, info->arch_name) == 0
 706       && info->the_default)
 707     return true;
 708
 709   /* Exact match of the machine name (PRINTABLE_NAME)? */
 710   if (strcasecmp (string, info->printable_name) == 0)
 711     return true;
 712
 713   /* Given that printable_name contains no colon, attempt to match:
 714      ARCH_NAME [ ":" ] PRINTABLE_NAME? */
 715   printable_name_colon = strchr (info->printable_name, ':');
 716   if (printable_name_colon == NULL)
 717     {
 718       int strlen_arch_name = strlen (info->arch_name);
 719       if (strncasecmp (string, info->arch_name, strlen_arch_name) == 0)
 720         {
 721           if (string[strlen_arch_name] == ':')
 722             {
 723               if (strcasecmp (string + strlen_arch_name + 1,
 724                               info->printable_name) == 0)
 725                 return true;
 726             }
 727           else
 728             {
 729               if (strcasecmp (string + strlen_arch_name,
 730                               info->printable_name) == 0)
 731                 return true;
 732             }
 733         }
 734     }
 735
 736   /* Given that PRINTABLE_NAME has the form: <arch> ":" <mach>;
 737      Attempt to match: <arch> <mach>? */
 738   if (printable_name_colon != NULL)
 739     {
 740       int colon_index = printable_name_colon - info->printable_name;
 741       if (strncasecmp (string, info->printable_name, colon_index) == 0
 742           && strcasecmp (string + colon_index,
 743                          info->printable_name + colon_index + 1) == 0)
 744         return true;
 745     }
 746
 747   /* Given that PRINTABLE_NAME has the form: <arch> ":" <mach>; Do not
 748      attempt to match just <mach>, it could be ambigious.  This test
 749      is left until later. */
 750
 751   /* NOTE: The below is retained for compatibility only. Please do not
 752      add to this code */
 753
 754   /* See how much of the supplied string matches with the
 755      architecture, eg the string m68k:68020 would match the 68k entry
 756      up to the :, then we get left with the machine number */
 757
 758   for (ptr_src = string, ptr_tst = info->arch_name;
 759        *ptr_src && *ptr_tst;
 760        ptr_src++, ptr_tst++)
 761     {
 762       if (*ptr_src != *ptr_tst) break;
 763     }
 764
 765   /* Chewed up as much of the architecture as will match, skip any
 766      colons */
 767   if (*ptr_src == ':')
 768     ptr_src++;
 769
 770   if (*ptr_src == 0)
 771     {
 772       /* nothing more, then only keep this one if it is the default
 773          machine for this architecture */
 774       return info->the_default;
 775     }
 776
 777   number = 0;
 778   while (isdigit ((unsigned char) *ptr_src))
 779     {
 780       number = number * 10 + *ptr_src  - '0';
 781       ptr_src++;
 782     }
 783
 784   /* NOTE: The below is retained for compatibility only.
 785      PLEASE DO NOT ADD TO THIS CODE. */
 786
 787   switch (number)
 788     {
 789       /* FIXME: These are needed to parse IEEE objects.  */
 790     case 68000:
 791       arch = bfd_arch_m68k;
 792       number = bfd_mach_m68000;
 793       break;
 794     case 68010:
 795       arch = bfd_arch_m68k;
 796       number = bfd_mach_m68010;
 797       break;
 798     case 68020:
 799       arch = bfd_arch_m68k;
 800       number = bfd_mach_m68020;
 801       break;
 802     case 68030:
 803       arch = bfd_arch_m68k;
 804       number = bfd_mach_m68030;
 805       break;
 806     case 68040:
 807       arch = bfd_arch_m68k;
 808       number = bfd_mach_m68040;
 809       break;
 810     case 68060:
 811       arch = bfd_arch_m68k;
 812       number = bfd_mach_m68060;
 813       break;
 814     case 68332:
 815       arch = bfd_arch_m68k;
 816       number = bfd_mach_cpu32;
 817       break;
 818
 819     case 32000:
 820       arch = bfd_arch_we32k;
 821       break;
 822
 823     case 3000:
 824       arch = bfd_arch_mips;
 825       number = bfd_mach_mips3000;
 826       break;
 827
 828     case 4000:
 829       arch = bfd_arch_mips;
 830       number = bfd_mach_mips4000;
 831       break;
 832
 833     case 6000:
 834       arch = bfd_arch_rs6000;
 835       break;
 836
 837     default:
 838       return false;
 839     }
 840
 841   if (arch != info->arch)
 842     return false;
 843
 844   if (number != info->mach)
 845     return false;
 846
 847   return true;
 848 }
 849
 850
 851 /*
 852 FUNCTION
 853         bfd_get_arch_info
 854
 855 SYNOPSIS
 856         const bfd_arch_info_type * bfd_get_arch_info(bfd *abfd);
 857
 858 DESCRIPTION
 859         Return the architecture info struct in @var{abfd}.
 860 */
 861
 862 const bfd_arch_info_type *
 863 bfd_get_arch_info (abfd)
 864      bfd *abfd;
 865 {
 866   return abfd->arch_info;
 867 }
 868
 869
 870 /*
 871 FUNCTION
 872         bfd_lookup_arch
 873
 874 SYNOPSIS
 875         const bfd_arch_info_type *bfd_lookup_arch
 876                 (enum bfd_architecture
 877                 arch,
 878                 unsigned long machine);
 879
 880 DESCRIPTION
 881         Look for the architecure info structure which matches the
 882         arguments @var{arch} and @var{machine}. A machine of 0 matches the
 883         machine/architecture structure which marks itself as the
 884         default.
 885 */
 886
 887 const bfd_arch_info_type *
 888 bfd_lookup_arch (arch, machine)
 889      enum bfd_architecture arch;
 890      unsigned long machine;
 891 {
 892   const bfd_arch_info_type * const *app, *ap;
 893
 894   for (app = bfd_archures_list; *app != NULL; app++)
 895     {
 896       for (ap = *app; ap != NULL; ap = ap->next)
 897         {
 898           if (ap->arch == arch
 899               && (ap->mach == machine
 900                   || (machine == 0 && ap->the_default)))
 901             return ap;
 902         }
 903     }
 904
 905   return NULL;
 906 }
 907
 908
 909 /*
 910 FUNCTION
 911         bfd_printable_arch_mach
 912
 913 SYNOPSIS
 914         const char *bfd_printable_arch_mach
 915                 (enum bfd_architecture arch, unsigned long machine);
 916
 917 DESCRIPTION
 918         Return a printable string representing the architecture and
 919         machine type.
 920
 921         This routine is depreciated.
 922 */
 923
 924 const char *
 925 bfd_printable_arch_mach (arch, machine)
 926      enum bfd_architecture arch;
 927      unsigned long machine;
 928 {
 929     const bfd_arch_info_type *ap = bfd_lookup_arch (arch, machine);
 930
 931     if (ap)
 932       return ap->printable_name;
 933     return "UNKNOWN!";
 934 }