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