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