bfd/archures.c

   1 /* BFD library support routines for architectures.
   2    Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
   3    2000, 2001, 2002
   4    Free Software Foundation, Inc.
   5    Hacked by John Gilmore and Steve Chamberlain of Cygnus Support.
   6
   7 This file is part of BFD, the Binary File Descriptor library.
   8
   9 This program is free software; you can redistribute it and/or modify
  10 it under the terms of the GNU General Public License as published by
  11 the Free Software Foundation; either version 2 of the License, or
  12 (at your option) any later version.
  13
  14 This program is distributed in the hope that it will be useful,
  15 but WITHOUT ANY WARRANTY; without even the implied warranty of
  16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17 GNU General Public License for more details.
  18
  19 You should have received a copy of the GNU General Public License
  20 along with this program; if not, write to the Free Software
  21 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
  22
  23 #include "bfd.h"
  24 #include "sysdep.h"
  25 #include "libbfd.h"
  26 #include "safe-ctype.h"
  27
  28 /*
  29
  30 SECTION
  31         Architectures
  32
  33         BFD keeps one atom in a BFD describing the
  34         architecture of the data attached to the BFD: a pointer to a
  35         <<bfd_arch_info_type>>.
  36
  37         Pointers to structures can be requested independently of a BFD
  38         so that an architecture's information can be interrogated
  39         without access to an open BFD.
  40
  41         The architecture information is provided by each architecture package.
  42         The set of default architectures is selected by the macro
  43         <<SELECT_ARCHITECTURES>>.  This is normally set up in the
  44         @file{config/@var{target}.mt} file of your choice.  If the name is not
  45         defined, then all the architectures supported are included.
  46
  47         When BFD starts up, all the architectures are called with an
  48         initialize method.  It is up to the architecture back end to
  49         insert as many items into the list of architectures as it wants to;
  50         generally this would be one for each machine and one for the
  51         default case (an item with a machine field of 0).
  52
  53         BFD's idea of an architecture is implemented in @file{archures.c}.
  54 */
  55
  56 /*
  57
  58 SUBSECTION
  59         bfd_architecture
  60
  61 DESCRIPTION
  62         This enum gives the object file's CPU architecture, in a
  63         global sense---i.e., what processor family does it belong to?
  64         Another field indicates which processor within
  65         the family is in use.  The machine gives a number which
  66         distinguishes different versions of the architecture,
  67         containing, for example, 2 and 3 for Intel i960 KA and i960 KB,
  68         and 68020 and 68030 for Motorola 68020 and 68030.
  69
  70 .enum bfd_architecture
  71 .{
  72 .  bfd_arch_unknown,   {* File arch not known.  *}
  73 .  bfd_arch_obscure,   {* Arch known, not one of these.  *}
  74 .  bfd_arch_m68k,      {* Motorola 68xxx *}
  75 .#define bfd_mach_m68000 1
  76 .#define bfd_mach_m68008 2
  77 .#define bfd_mach_m68010 3
  78 .#define bfd_mach_m68020 4
  79 .#define bfd_mach_m68030 5
  80 .#define bfd_mach_m68040 6
  81 .#define bfd_mach_m68060 7
  82 .#define bfd_mach_cpu32  8
  83 .#define bfd_mach_mcf5200  9
  84 .#define bfd_mach_mcf5206e 10
  85 .#define bfd_mach_mcf5307  11
  86 .#define bfd_mach_mcf5407  12
  87 .  bfd_arch_vax,       {* DEC Vax *}
  88 .  bfd_arch_i960,      {* Intel 960 *}
  89 .    {* The order of the following is important.
  90 .       lower number indicates a machine type that
  91 .       only accepts a subset of the instructions
  92 .       available to machines with higher numbers.
  93 .       The exception is the "ca", which is
  94 .       incompatible with all other machines except
  95 .       "core".  *}
  96 .
  97 .#define bfd_mach_i960_core      1
  98 .#define bfd_mach_i960_ka_sa     2
  99 .#define bfd_mach_i960_kb_sb     3
 100 .#define bfd_mach_i960_mc        4
 101 .#define bfd_mach_i960_xa        5
 102 .#define bfd_mach_i960_ca        6
 103 .#define bfd_mach_i960_jx        7
 104 .#define bfd_mach_i960_hx        8
 105 .
 106 .  bfd_arch_or32,      {* OpenRISC 32 *}
 107 .
 108 .  bfd_arch_a29k,      {* AMD 29000 *}
 109 .  bfd_arch_sparc,     {* SPARC *}
 110 .#define bfd_mach_sparc                 1
 111 .{* The difference between v8plus and v9 is that v9 is a true 64 bit env.  *}
 112 .#define bfd_mach_sparc_sparclet        2
 113 .#define bfd_mach_sparc_sparclite       3
 114 .#define bfd_mach_sparc_v8plus          4
 115 .#define bfd_mach_sparc_v8plusa         5 {* with ultrasparc add'ns.  *}
 116 .#define bfd_mach_sparc_sparclite_le    6
 117 .#define bfd_mach_sparc_v9              7
 118 .#define bfd_mach_sparc_v9a             8 {* with ultrasparc add'ns.  *}
 119 .#define bfd_mach_sparc_v8plusb         9 {* with cheetah add'ns.  *}
 120 .#define bfd_mach_sparc_v9b             10 {* with cheetah add'ns.  *}
 121 .{* Nonzero if MACH has the v9 instruction set.  *}
 122 .#define bfd_mach_sparc_v9_p(mach) \
 123 .  ((mach) >= bfd_mach_sparc_v8plus && (mach) <= bfd_mach_sparc_v9b \
 124 .   && (mach) != bfd_mach_sparc_sparclite_le)
 125 .  bfd_arch_mips,      {* MIPS Rxxxx *}
 126 .#define bfd_mach_mips3000              3000
 127 .#define bfd_mach_mips3900              3900
 128 .#define bfd_mach_mips4000              4000
 129 .#define bfd_mach_mips4010              4010
 130 .#define bfd_mach_mips4100              4100
 131 .#define bfd_mach_mips4111              4111
 132 .#define bfd_mach_mips4300              4300
 133 .#define bfd_mach_mips4400              4400
 134 .#define bfd_mach_mips4600              4600
 135 .#define bfd_mach_mips4650              4650
 136 .#define bfd_mach_mips5000              5000
 137 .#define bfd_mach_mips6000              6000
 138 .#define bfd_mach_mips8000              8000
 139 .#define bfd_mach_mips10000             10000
 140 .#define bfd_mach_mips12000             12000
 141 .#define bfd_mach_mips16                16
 142 .#define bfd_mach_mips5                 5
 143 .#define bfd_mach_mips_sb1              12310201 {* octal 'SB', 01 *}
 144 .#define bfd_mach_mipsisa32             32
 145 .#define bfd_mach_mipsisa64             64
 146 .  bfd_arch_i386,      {* Intel 386 *}
 147 .#define bfd_mach_i386_i386 0
 148 .#define bfd_mach_i386_i8086 1
 149 .#define bfd_mach_i386_i386_intel_syntax 2
 150 .#define bfd_mach_x86_64 3
 151 .#define bfd_mach_x86_64_intel_syntax 4
 152 .  bfd_arch_we32k,     {* AT&T WE32xxx *}
 153 .  bfd_arch_tahoe,     {* CCI/Harris Tahoe *}
 154 .  bfd_arch_i860,      {* Intel 860 *}
 155 .  bfd_arch_i370,      {* IBM 360/370 Mainframes *}
 156 .  bfd_arch_romp,      {* IBM ROMP PC/RT *}
 157 .  bfd_arch_alliant,   {* Alliant *}
 158 .  bfd_arch_convex,    {* Convex *}
 159 .  bfd_arch_m88k,      {* Motorola 88xxx *}
 160 .  bfd_arch_pyramid,   {* Pyramid Technology *}
 161 .  bfd_arch_h8300,     {* Hitachi H8/300 *}
 162 .#define bfd_mach_h8300   1
 163 .#define bfd_mach_h8300h  2
 164 .#define bfd_mach_h8300s  3
 165 .  bfd_arch_pdp11,     {* DEC PDP-11 *}
 166 .  bfd_arch_powerpc,   {* PowerPC *}
 167 .#define bfd_mach_ppc           0
 168 .#define bfd_mach_ppc64         1
 169 .#define bfd_mach_ppc_403       403
 170 .#define bfd_mach_ppc_403gc     4030
 171 .#define bfd_mach_ppc_505       505
 172 .#define bfd_mach_ppc_601       601
 173 .#define bfd_mach_ppc_602       602
 174 .#define bfd_mach_ppc_603       603
 175 .#define bfd_mach_ppc_ec603e    6031
 176 .#define bfd_mach_ppc_604       604
 177 .#define bfd_mach_ppc_620       620
 178 .#define bfd_mach_ppc_630       630
 179 .#define bfd_mach_ppc_750       750
 180 .#define bfd_mach_ppc_860       860
 181 .#define bfd_mach_ppc_a35       35
 182 .#define bfd_mach_ppc_rs64ii    642
 183 .#define bfd_mach_ppc_rs64iii   643
 184 .#define bfd_mach_ppc_7400      7400
 185 .  bfd_arch_rs6000,    {* IBM RS/6000 *}
 186 .#define bfd_mach_rs6k          0
 187 .#define bfd_mach_rs6k_rs1      6001
 188 .#define bfd_mach_rs6k_rsc      6003
 189 .#define bfd_mach_rs6k_rs2      6002
 190 .  bfd_arch_hppa,      {* HP PA RISC *}
 191 .  bfd_arch_d10v,      {* Mitsubishi D10V *}
 192 .#define bfd_mach_d10v          0
 193 .#define bfd_mach_d10v_ts2      2
 194 .#define bfd_mach_d10v_ts3      3
 195 .  bfd_arch_d30v,      {* Mitsubishi D30V *}
 196 .  bfd_arch_m68hc11,   {* Motorola 68HC11 *}
 197 .  bfd_arch_m68hc12,   {* Motorola 68HC12 *}
 198 .  bfd_arch_z8k,       {* Zilog Z8000 *}
 199 .#define bfd_mach_z8001         1
 200 .#define bfd_mach_z8002         2
 201 .  bfd_arch_h8500,     {* Hitachi H8/500 *}
 202 .  bfd_arch_sh,        {* Hitachi SH *}
 203 .#define bfd_mach_sh            0
 204 .#define bfd_mach_sh2        0x20
 205 .#define bfd_mach_sh_dsp     0x2d
 206 .#define bfd_mach_sh3        0x30
 207 .#define bfd_mach_sh3_dsp    0x3d
 208 .#define bfd_mach_sh3e       0x3e
 209 .#define bfd_mach_sh4        0x40
 210 .#define bfd_mach_sh5        0x50
 211 .  bfd_arch_alpha,     {* Dec Alpha *}
 212 .#define bfd_mach_alpha_ev4  0x10
 213 .#define bfd_mach_alpha_ev5  0x20
 214 .#define bfd_mach_alpha_ev6  0x30
 215 .  bfd_arch_arm,       {* Advanced Risc Machines ARM.  *}
 216 .#define bfd_mach_arm_2         1
 217 .#define bfd_mach_arm_2a        2
 218 .#define bfd_mach_arm_3         3
 219 .#define bfd_mach_arm_3M        4
 220 .#define bfd_mach_arm_4         5
 221 .#define bfd_mach_arm_4T        6
 222 .#define bfd_mach_arm_5         7
 223 .#define bfd_mach_arm_5T        8
 224 .#define bfd_mach_arm_5TE       9
 225 .#define bfd_mach_arm_XScale    10
 226 .  bfd_arch_ns32k,     {* National Semiconductors ns32000 *}
 227 .  bfd_arch_w65,       {* WDC 65816 *}
 228 .  bfd_arch_tic30,     {* Texas Instruments TMS320C30 *}
 229 .  bfd_arch_tic54x,    {* Texas Instruments TMS320C54X *}
 230 .  bfd_arch_tic80,     {* TI TMS320c80 (MVP) *}
 231 .  bfd_arch_v850,      {* NEC V850 *}
 232 .#define bfd_mach_v850          0
 233 .#define bfd_mach_v850e         'E'
 234 .#define bfd_mach_v850ea        'A'
 235 .  bfd_arch_arc,       {* ARC Cores *}
 236 .#define bfd_mach_arc_5         0
 237 .#define bfd_mach_arc_6         1
 238 .#define bfd_mach_arc_7         2
 239 .#define bfd_mach_arc_8         3
 240 .  bfd_arch_m32r,      {* Mitsubishi M32R/D *}
 241 .#define bfd_mach_m32r          0 {* For backwards compatibility.  *}
 242 .#define bfd_mach_m32rx         'x'
 243 .  bfd_arch_mn10200,   {* Matsushita MN10200 *}
 244 .  bfd_arch_mn10300,   {* Matsushita MN10300 *}
 245 .#define bfd_mach_mn10300               300
 246 .#define bfd_mach_am33          330
 247 .  bfd_arch_fr30,
 248 .#define bfd_mach_fr30          0x46523330
 249 .  bfd_arch_mcore,
 250 .  bfd_arch_ia64,      {* HP/Intel ia64 *}
 251 .#define bfd_mach_ia64_elf64    0
 252 .#define bfd_mach_ia64_elf32    1
 253 .  bfd_arch_pj,
 254 .  bfd_arch_avr,       {* Atmel AVR microcontrollers.  *}
 255 .#define bfd_mach_avr1          1
 256 .#define bfd_mach_avr2          2
 257 .#define bfd_mach_avr3          3
 258 .#define bfd_mach_avr4          4
 259 .#define bfd_mach_avr5          5
 260 .  bfd_arch_cris,      {* Axis CRIS *}
 261 .  bfd_arch_s390,      {* IBM s390 *}
 262 .#define bfd_mach_s390_31       0
 263 .#define bfd_mach_s390_64       1
 264 .  bfd_arch_openrisc,  {* OpenRISC *}
 265 .  bfd_arch_mmix,      {* Donald Knuth's educational processor.  *}
 266 .  bfd_arch_xstormy16,
 267 .#define bfd_mach_xstormy16     0
 268 .  bfd_arch_last
 269 .  };
 270 */
 271
 272 /*
 273 SUBSECTION
 274         bfd_arch_info
 275
 276 DESCRIPTION
 277         This structure contains information on architectures for use
 278         within BFD.
 279
 280 .
 281 .typedef struct bfd_arch_info
 282 .{
 283 .  int bits_per_word;
 284 .  int bits_per_address;
 285 .  int bits_per_byte;
 286 .  enum bfd_architecture arch;
 287 .  unsigned long mach;
 288 .  const char *arch_name;
 289 .  const char *printable_name;
 290 .  unsigned int section_align_power;
 291 .  {* True if this is the default machine for the architecture.  *}
 292 .  boolean the_default;
 293 .  const struct bfd_arch_info * (*compatible)
 294 .       PARAMS ((const struct bfd_arch_info *a,
 295 .                const struct bfd_arch_info *b));
 296 .
 297 .  boolean (*scan) PARAMS ((const struct bfd_arch_info *, const char *));
 298 .
 299 .  const struct bfd_arch_info *next;
 300 .}
 301 .bfd_arch_info_type;
 302 .
 303 */
 304
 305 extern const bfd_arch_info_type bfd_a29k_arch;
 306 extern const bfd_arch_info_type bfd_alpha_arch;
 307 extern const bfd_arch_info_type bfd_arc_arch;
 308 extern const bfd_arch_info_type bfd_arm_arch;
 309 extern const bfd_arch_info_type bfd_avr_arch;
 310 extern const bfd_arch_info_type bfd_cris_arch;
 311 extern const bfd_arch_info_type bfd_d10v_arch;
 312 extern const bfd_arch_info_type bfd_d30v_arch;
 313 extern const bfd_arch_info_type bfd_fr30_arch;
 314 extern const bfd_arch_info_type bfd_h8300_arch;
 315 extern const bfd_arch_info_type bfd_h8500_arch;
 316 extern const bfd_arch_info_type bfd_hppa_arch;
 317 extern const bfd_arch_info_type bfd_i370_arch;
 318 extern const bfd_arch_info_type bfd_i386_arch;
 319 extern const bfd_arch_info_type bfd_i860_arch;
 320 extern const bfd_arch_info_type bfd_i960_arch;
 321 extern const bfd_arch_info_type bfd_ia64_arch;
 322 extern const bfd_arch_info_type bfd_m32r_arch;
 323 extern const bfd_arch_info_type bfd_m68hc11_arch;
 324 extern const bfd_arch_info_type bfd_m68hc12_arch;
 325 extern const bfd_arch_info_type bfd_m68k_arch;
 326 extern const bfd_arch_info_type bfd_m88k_arch;
 327 extern const bfd_arch_info_type bfd_mcore_arch;
 328 extern const bfd_arch_info_type bfd_mips_arch;
 329 extern const bfd_arch_info_type bfd_mmix_arch;
 330 extern const bfd_arch_info_type bfd_mn10200_arch;
 331 extern const bfd_arch_info_type bfd_mn10300_arch;
 332 extern const bfd_arch_info_type bfd_ns32k_arch;
 333 extern const bfd_arch_info_type bfd_openrisc_arch;
 334 extern const bfd_arch_info_type bfd_or32_arch;
 335 extern const bfd_arch_info_type bfd_pdp11_arch;
 336 extern const bfd_arch_info_type bfd_pj_arch;
 337 extern const bfd_arch_info_type bfd_powerpc_archs[];
 338 #define bfd_powerpc_arch bfd_powerpc_archs[0]
 339 extern const bfd_arch_info_type bfd_rs6000_arch;
 340 extern const bfd_arch_info_type bfd_s390_arch;
 341 extern const bfd_arch_info_type bfd_sh_arch;
 342 extern const bfd_arch_info_type bfd_sparc_arch;
 343 extern const bfd_arch_info_type bfd_tic30_arch;
 344 extern const bfd_arch_info_type bfd_tic54x_arch;
 345 extern const bfd_arch_info_type bfd_tic80_arch;
 346 extern const bfd_arch_info_type bfd_v850_arch;
 347 extern const bfd_arch_info_type bfd_vax_arch;
 348 extern const bfd_arch_info_type bfd_we32k_arch;
 349 extern const bfd_arch_info_type bfd_w65_arch;
 350 extern const bfd_arch_info_type bfd_xstormy16_arch;
 351 extern const bfd_arch_info_type bfd_z8k_arch;
 352
 353 static const bfd_arch_info_type * const bfd_archures_list[] =
 354   {
 355 #ifdef SELECT_ARCHITECTURES
 356     SELECT_ARCHITECTURES,
 357 #else
 358     &bfd_a29k_arch,
 359     &bfd_alpha_arch,
 360     &bfd_arc_arch,
 361     &bfd_arm_arch,
 362     &bfd_avr_arch,
 363     &bfd_cris_arch,
 364     &bfd_d10v_arch,
 365     &bfd_d30v_arch,
 366     &bfd_fr30_arch,
 367     &bfd_h8300_arch,
 368     &bfd_h8500_arch,
 369     &bfd_hppa_arch,
 370     &bfd_i370_arch,
 371     &bfd_i386_arch,
 372     &bfd_i860_arch,
 373     &bfd_i960_arch,
 374     &bfd_ia64_arch,
 375     &bfd_m32r_arch,
 376     &bfd_m68hc11_arch,
 377     &bfd_m68hc12_arch,
 378     &bfd_m68k_arch,
 379     &bfd_m88k_arch,
 380     &bfd_mcore_arch,
 381     &bfd_mips_arch,
 382     &bfd_mmix_arch,
 383     &bfd_mn10200_arch,
 384     &bfd_mn10300_arch,
 385     &bfd_ns32k_arch,
 386     &bfd_openrisc_arch,
 387     &bfd_or32_arch,
 388     &bfd_pdp11_arch,
 389     &bfd_powerpc_arch,
 390     &bfd_rs6000_arch,
 391     &bfd_s390_arch,
 392     &bfd_sh_arch,
 393     &bfd_sparc_arch,
 394     &bfd_tic30_arch,
 395     &bfd_tic54x_arch,
 396     &bfd_tic80_arch,
 397     &bfd_v850_arch,
 398     &bfd_vax_arch,
 399     &bfd_w65_arch,
 400     &bfd_we32k_arch,
 401     &bfd_xstormy16_arch,
 402     &bfd_z8k_arch,
 403 #endif
 404   0
 405 };
 406
 407 /*
 408 FUNCTION
 409         bfd_printable_name
 410
 411 SYNOPSIS
 412         const char *bfd_printable_name(bfd *abfd);
 413
 414 DESCRIPTION
 415         Return a printable string representing the architecture and machine
 416         from the pointer to the architecture info structure.
 417
 418 */
 419
 420 const char *
 421 bfd_printable_name (abfd)
 422      bfd *abfd;
 423 {
 424   return abfd->arch_info->printable_name;
 425 }
 426
 427 /*
 428 FUNCTION
 429         bfd_scan_arch
 430
 431 SYNOPSIS
 432         const bfd_arch_info_type *bfd_scan_arch(const char *string);
 433
 434 DESCRIPTION
 435         Figure out if BFD supports any cpu which could be described with
 436         the name @var{string}.  Return a pointer to an <<arch_info>>
 437         structure if a machine is found, otherwise NULL.
 438 */
 439
 440 const bfd_arch_info_type *
 441 bfd_scan_arch (string)
 442      const char *string;
 443 {
 444   const bfd_arch_info_type * const *app, *ap;
 445
 446   /* Look through all the installed architectures.  */
 447   for (app = bfd_archures_list; *app != NULL; app++)
 448     {
 449       for (ap = *app; ap != NULL; ap = ap->next)
 450         {
 451           if (ap->scan (ap, string))
 452             return ap;
 453         }
 454     }
 455
 456   return NULL;
 457 }
 458
 459 /*
 460 FUNCTION
 461         bfd_arch_list
 462
 463 SYNOPSIS
 464         const char **bfd_arch_list(void);
 465
 466 DESCRIPTION
 467         Return a freshly malloced NULL-terminated vector of the names
 468         of all the valid BFD architectures.  Do not modify the names.
 469 */
 470
 471 const char **
 472 bfd_arch_list ()
 473 {
 474   int vec_length = 0;
 475   const char **name_ptr;
 476   const char **name_list;
 477   const bfd_arch_info_type * const *app;
 478   bfd_size_type amt;
 479
 480   /* Determine the number of architectures.  */
 481   vec_length = 0;
 482   for (app = bfd_archures_list; *app != NULL; app++)
 483     {
 484       const bfd_arch_info_type *ap;
 485       for (ap = *app; ap != NULL; ap = ap->next)
 486         {
 487           vec_length++;
 488         }
 489     }
 490
 491   amt = (vec_length + 1) * sizeof (char **);
 492   name_list = (const char **) bfd_malloc (amt);
 493   if (name_list == NULL)
 494     return NULL;
 495
 496   /* Point the list at each of the names.  */
 497   name_ptr = name_list;
 498   for (app = bfd_archures_list; *app != NULL; app++)
 499     {
 500       const bfd_arch_info_type *ap;
 501       for (ap = *app; ap != NULL; ap = ap->next)
 502         {
 503           *name_ptr = ap->printable_name;
 504           name_ptr++;
 505         }
 506     }
 507   *name_ptr = NULL;
 508
 509   return name_list;
 510 }
 511
 512 /*
 513 FUNCTION
 514         bfd_arch_get_compatible
 515
 516 SYNOPSIS
 517         const bfd_arch_info_type *bfd_arch_get_compatible(
 518                 const bfd *abfd,
 519                 const bfd *bbfd);
 520
 521 DESCRIPTION
 522         Determine whether two BFDs'
 523         architectures and machine types are compatible.  Calculates
 524         the lowest common denominator between the two architectures
 525         and machine types implied by the BFDs and returns a pointer to
 526         an <<arch_info>> structure describing the compatible machine.
 527 */
 528
 529 const bfd_arch_info_type *
 530 bfd_arch_get_compatible (abfd, bbfd)
 531      const bfd *abfd;
 532      const bfd *bbfd;
 533 {
 534   /* If either architecture is unknown, then all we can do is assume
 535      the user knows what he's doing.  */
 536   if (abfd->arch_info->arch == bfd_arch_unknown)
 537     return bbfd->arch_info;
 538   if (bbfd->arch_info->arch == bfd_arch_unknown)
 539     return abfd->arch_info;
 540
 541   /* Otherwise architecture-specific code has to decide.  */
 542   return abfd->arch_info->compatible (abfd->arch_info, bbfd->arch_info);
 543 }
 544
 545 /*
 546 INTERNAL_DEFINITION
 547         bfd_default_arch_struct
 548
 549 DESCRIPTION
 550         The <<bfd_default_arch_struct>> is an item of
 551         <<bfd_arch_info_type>> which has been initialized to a fairly
 552         generic state.  A BFD starts life by pointing to this
 553         structure, until the correct back end has determined the real
 554         architecture of the file.
 555
 556 .extern const bfd_arch_info_type bfd_default_arch_struct;
 557 */
 558
 559 const bfd_arch_info_type bfd_default_arch_struct = {
 560   32, 32, 8, bfd_arch_unknown, 0, "unknown", "unknown", 2, true,
 561   bfd_default_compatible,
 562   bfd_default_scan,
 563   0,
 564 };
 565
 566 /*
 567 FUNCTION
 568         bfd_set_arch_info
 569
 570 SYNOPSIS
 571         void bfd_set_arch_info(bfd *abfd, const bfd_arch_info_type *arg);
 572
 573 DESCRIPTION
 574         Set the architecture info of @var{abfd} to @var{arg}.
 575 */
 576
 577 void
 578 bfd_set_arch_info (abfd, arg)
 579      bfd *abfd;
 580      const bfd_arch_info_type *arg;
 581 {
 582   abfd->arch_info = arg;
 583 }
 584
 585 /*
 586 INTERNAL_FUNCTION
 587         bfd_default_set_arch_mach
 588
 589 SYNOPSIS
 590         boolean bfd_default_set_arch_mach(bfd *abfd,
 591                 enum bfd_architecture arch,
 592                 unsigned long mach);
 593
 594 DESCRIPTION
 595         Set the architecture and machine type in BFD @var{abfd}
 596         to @var{arch} and @var{mach}.  Find the correct
 597         pointer to a structure and insert it into the <<arch_info>>
 598         pointer.
 599 */
 600
 601 boolean
 602 bfd_default_set_arch_mach (abfd, arch, mach)
 603      bfd *abfd;
 604      enum bfd_architecture arch;
 605      unsigned long mach;
 606 {
 607   const bfd_arch_info_type * const *app, *ap;
 608
 609   for (app = bfd_archures_list; *app != NULL; app++)
 610     {
 611       for (ap = *app; ap != NULL; ap = ap->next)
 612         {
 613           if (ap->arch == arch
 614               && (ap->mach == mach
 615                   || (mach == 0 && ap->the_default)))
 616             {
 617               abfd->arch_info = ap;
 618               return true;
 619             }
 620         }
 621     }
 622
 623   abfd->arch_info = &bfd_default_arch_struct;
 624   bfd_set_error (bfd_error_bad_value);
 625   return false;
 626 }
 627
 628 /*
 629 FUNCTION
 630         bfd_get_arch
 631
 632 SYNOPSIS
 633         enum bfd_architecture bfd_get_arch(bfd *abfd);
 634
 635 DESCRIPTION
 636         Return the enumerated type which describes the BFD @var{abfd}'s
 637         architecture.
 638 */
 639
 640 enum bfd_architecture
 641 bfd_get_arch (abfd)
 642      bfd *abfd;
 643 {
 644   return abfd->arch_info->arch;
 645 }
 646
 647 /*
 648 FUNCTION
 649         bfd_get_mach
 650
 651 SYNOPSIS
 652         unsigned long bfd_get_mach(bfd *abfd);
 653
 654 DESCRIPTION
 655         Return the long type which describes the BFD @var{abfd}'s
 656         machine.
 657 */
 658
 659 unsigned long
 660 bfd_get_mach (abfd)
 661      bfd *abfd;
 662 {
 663   return abfd->arch_info->mach;
 664 }
 665
 666 /*
 667 FUNCTION
 668         bfd_arch_bits_per_byte
 669
 670 SYNOPSIS
 671         unsigned int bfd_arch_bits_per_byte(bfd *abfd);
 672
 673 DESCRIPTION
 674         Return the number of bits in one of the BFD @var{abfd}'s
 675         architecture's bytes.
 676 */
 677
 678 unsigned int
 679 bfd_arch_bits_per_byte (abfd)
 680      bfd *abfd;
 681 {
 682   return abfd->arch_info->bits_per_byte;
 683 }
 684
 685 /*
 686 FUNCTION
 687         bfd_arch_bits_per_address
 688
 689 SYNOPSIS
 690         unsigned int bfd_arch_bits_per_address(bfd *abfd);
 691
 692 DESCRIPTION
 693         Return the number of bits in one of the BFD @var{abfd}'s
 694         architecture's addresses.
 695 */
 696
 697 unsigned int
 698 bfd_arch_bits_per_address (abfd)
 699      bfd *abfd;
 700 {
 701   return abfd->arch_info->bits_per_address;
 702 }
 703
 704 /*
 705 INTERNAL_FUNCTION
 706         bfd_default_compatible
 707
 708 SYNOPSIS
 709         const bfd_arch_info_type *bfd_default_compatible
 710         (const bfd_arch_info_type *a,
 711         const bfd_arch_info_type *b);
 712
 713 DESCRIPTION
 714         The default function for testing for compatibility.
 715 */
 716
 717 const bfd_arch_info_type *
 718 bfd_default_compatible (a, b)
 719      const bfd_arch_info_type *a;
 720      const bfd_arch_info_type *b;
 721 {
 722   if (a->arch != b->arch)
 723     return NULL;
 724
 725   if (a->mach > b->mach)
 726     return a;
 727
 728   if (b->mach > a->mach)
 729     return b;
 730
 731   return a;
 732 }
 733
 734 /*
 735 INTERNAL_FUNCTION
 736         bfd_default_scan
 737
 738 SYNOPSIS
 739         boolean bfd_default_scan(const struct bfd_arch_info *info, const char *string);
 740
 741 DESCRIPTION
 742         The default function for working out whether this is an
 743         architecture hit and a machine hit.
 744 */
 745
 746 boolean
 747 bfd_default_scan (info, string)
 748      const bfd_arch_info_type *info;
 749      const char *string;
 750 {
 751   const char *ptr_src;
 752   const char *ptr_tst;
 753   unsigned long number;
 754   enum bfd_architecture arch;
 755   const char *printable_name_colon;
 756
 757   /* Exact match of the architecture name (ARCH_NAME) and also the
 758      default architecture?  */
 759   if (strcasecmp (string, info->arch_name) == 0
 760       && info->the_default)
 761     return true;
 762
 763   /* Exact match of the machine name (PRINTABLE_NAME)?  */
 764   if (strcasecmp (string, info->printable_name) == 0)
 765     return true;
 766
 767   /* Given that printable_name contains no colon, attempt to match:
 768      ARCH_NAME [ ":" ] PRINTABLE_NAME?  */
 769   printable_name_colon = strchr (info->printable_name, ':');
 770   if (printable_name_colon == NULL)
 771     {
 772       size_t strlen_arch_name = strlen (info->arch_name);
 773       if (strncasecmp (string, info->arch_name, strlen_arch_name) == 0)
 774         {
 775           if (string[strlen_arch_name] == ':')
 776             {
 777               if (strcasecmp (string + strlen_arch_name + 1,
 778                               info->printable_name) == 0)
 779                 return true;
 780             }
 781           else
 782             {
 783               if (strcasecmp (string + strlen_arch_name,
 784                               info->printable_name) == 0)
 785                 return true;
 786             }
 787         }
 788     }
 789
 790   /* Given that PRINTABLE_NAME has the form: <arch> ":" <mach>;
 791      Attempt to match: <arch> <mach>?  */
 792   if (printable_name_colon != NULL)
 793     {
 794       size_t colon_index = printable_name_colon - info->printable_name;
 795       if (strncasecmp (string, info->printable_name, colon_index) == 0
 796           && strcasecmp (string + colon_index,
 797                          info->printable_name + colon_index + 1) == 0)
 798         return true;
 799     }
 800
 801   /* Given that PRINTABLE_NAME has the form: <arch> ":" <mach>; Do not
 802      attempt to match just <mach>, it could be ambigious.  This test
 803      is left until later.  */
 804
 805   /* NOTE: The below is retained for compatibility only.  Please do
 806      not add to this code.  */
 807
 808   /* See how much of the supplied string matches with the
 809      architecture, eg the string m68k:68020 would match the 68k entry
 810      up to the :, then we get left with the machine number.  */
 811
 812   for (ptr_src = string, ptr_tst = info->arch_name;
 813        *ptr_src && *ptr_tst;
 814        ptr_src++, ptr_tst++)
 815     {
 816       if (*ptr_src != *ptr_tst)
 817         break;
 818     }
 819
 820   /* Chewed up as much of the architecture as will match, skip any
 821      colons.  */
 822   if (*ptr_src == ':')
 823     ptr_src++;
 824
 825   if (*ptr_src == 0)
 826     {
 827       /* Nothing more, then only keep this one if it is the default
 828          machine for this architecture.  */
 829       return info->the_default;
 830     }
 831
 832   number = 0;
 833   while (ISDIGIT (*ptr_src))
 834     {
 835       number = number * 10 + *ptr_src - '0';
 836       ptr_src++;
 837     }
 838
 839   /* NOTE: The below is retained for compatibility only.
 840      PLEASE DO NOT ADD TO THIS CODE.  */
 841
 842   switch (number)
 843     {
 844       /* FIXME: These are needed to parse IEEE objects.  */
 845       /* The following seven case's are here only for compatibility with
 846          older binutils (at least IEEE objects from binutils 2.9.1 require
 847          them).  */
 848     case bfd_mach_m68000:
 849     case bfd_mach_m68010:
 850     case bfd_mach_m68020:
 851     case bfd_mach_m68030:
 852     case bfd_mach_m68040:
 853     case bfd_mach_m68060:
 854     case bfd_mach_cpu32:
 855       arch = bfd_arch_m68k;
 856       break;
 857     case 68000:
 858       arch = bfd_arch_m68k;
 859       number = bfd_mach_m68000;
 860       break;
 861     case 68010:
 862       arch = bfd_arch_m68k;
 863       number = bfd_mach_m68010;
 864       break;
 865     case 68020:
 866       arch = bfd_arch_m68k;
 867       number = bfd_mach_m68020;
 868       break;
 869     case 68030:
 870       arch = bfd_arch_m68k;
 871       number = bfd_mach_m68030;
 872       break;
 873     case 68040:
 874       arch = bfd_arch_m68k;
 875       number = bfd_mach_m68040;
 876       break;
 877     case 68060:
 878       arch = bfd_arch_m68k;
 879       number = bfd_mach_m68060;
 880       break;
 881     case 68332:
 882       arch = bfd_arch_m68k;
 883       number = bfd_mach_cpu32;
 884       break;
 885     case 5200:
 886       arch = bfd_arch_m68k;
 887       number = bfd_mach_mcf5200;
 888       break;
 889     case 5206:
 890       arch = bfd_arch_m68k;
 891       number = bfd_mach_mcf5206e;
 892       break;
 893     case 5307:
 894       arch = bfd_arch_m68k;
 895       number = bfd_mach_mcf5307;
 896       break;
 897     case 5407:
 898       arch = bfd_arch_m68k;
 899       number = bfd_mach_mcf5407;
 900       break;
 901
 902     case 32000:
 903       arch = bfd_arch_we32k;
 904       break;
 905
 906     case 3000:
 907       arch = bfd_arch_mips;
 908       number = bfd_mach_mips3000;
 909       break;
 910
 911     case 4000:
 912       arch = bfd_arch_mips;
 913       number = bfd_mach_mips4000;
 914       break;
 915
 916     case 6000:
 917       arch = bfd_arch_rs6000;
 918       break;
 919
 920     case 7410:
 921       arch = bfd_arch_sh;
 922       number = bfd_mach_sh_dsp;
 923       break;
 924
 925     case 7708:
 926       arch = bfd_arch_sh;
 927       number = bfd_mach_sh3;
 928       break;
 929
 930     case 7729:
 931       arch = bfd_arch_sh;
 932       number = bfd_mach_sh3_dsp;
 933       break;
 934
 935     case 7750:
 936       arch = bfd_arch_sh;
 937       number = bfd_mach_sh4;
 938       break;
 939
 940     default:
 941       return false;
 942     }
 943
 944   if (arch != info->arch)
 945     return false;
 946
 947   if (number != info->mach)
 948     return false;
 949
 950   return true;
 951 }
 952
 953 /*
 954 FUNCTION
 955         bfd_get_arch_info
 956
 957 SYNOPSIS
 958         const bfd_arch_info_type * bfd_get_arch_info(bfd *abfd);
 959
 960 DESCRIPTION
 961         Return the architecture info struct in @var{abfd}.
 962 */
 963
 964 const bfd_arch_info_type *
 965 bfd_get_arch_info (abfd)
 966      bfd *abfd;
 967 {
 968   return abfd->arch_info;
 969 }
 970
 971 /*
 972 FUNCTION
 973         bfd_lookup_arch
 974
 975 SYNOPSIS
 976         const bfd_arch_info_type *bfd_lookup_arch
 977                 (enum bfd_architecture
 978                 arch,
 979                 unsigned long machine);
 980
 981 DESCRIPTION
 982         Look for the architecure info structure which matches the
 983         arguments @var{arch} and @var{machine}. A machine of 0 matches the
 984         machine/architecture structure which marks itself as the
 985         default.
 986 */
 987
 988 const bfd_arch_info_type *
 989 bfd_lookup_arch (arch, machine)
 990      enum bfd_architecture arch;
 991      unsigned long machine;
 992 {
 993   const bfd_arch_info_type * const *app, *ap;
 994
 995   for (app = bfd_archures_list; *app != NULL; app++)
 996     {
 997       for (ap = *app; ap != NULL; ap = ap->next)
 998         {
 999           if (ap->arch == arch
1000               && (ap->mach == machine
1001                   || (machine == 0 && ap->the_default)))
1002             return ap;
1003         }
1004     }
1005
1006   return NULL;
1007 }
1008
1009 /*
1010 FUNCTION
1011         bfd_printable_arch_mach
1012
1013 SYNOPSIS
1014         const char *bfd_printable_arch_mach
1015                 (enum bfd_architecture arch, unsigned long machine);
1016
1017 DESCRIPTION
1018         Return a printable string representing the architecture and
1019         machine type.
1020
1021         This routine is depreciated.
1022 */
1023
1024 const char *
1025 bfd_printable_arch_mach (arch, machine)
1026      enum bfd_architecture arch;
1027      unsigned long machine;
1028 {
1029   const bfd_arch_info_type *ap = bfd_lookup_arch (arch, machine);
1030
1031   if (ap)
1032     return ap->printable_name;
1033   return "UNKNOWN!";
1034 }
1035
1036 /*
1037 FUNCTION
1038         bfd_octets_per_byte
1039
1040 SYNOPSIS
1041         unsigned int bfd_octets_per_byte(bfd *abfd);
1042
1043 DESCRIPTION
1044         Return the number of octets (8-bit quantities) per target byte
1045         (minimum addressable unit).  In most cases, this will be one, but some
1046         DSP targets have 16, 32, or even 48 bits per byte.
1047 */
1048
1049 unsigned int
1050 bfd_octets_per_byte (abfd)
1051      bfd *abfd;
1052 {
1053   return bfd_arch_mach_octets_per_byte (bfd_get_arch (abfd),
1054                                         bfd_get_mach (abfd));
1055 }
1056
1057 /*
1058 FUNCTION
1059         bfd_arch_mach_octets_per_byte
1060
1061 SYNOPSIS
1062         unsigned int bfd_arch_mach_octets_per_byte(enum bfd_architecture arch,
1063                                                    unsigned long machine);
1064
1065 DESCRIPTION
1066         See bfd_octets_per_byte.
1067
1068         This routine is provided for those cases where a bfd * is not
1069         available
1070 */
1071
1072 unsigned int
1073 bfd_arch_mach_octets_per_byte (arch, mach)
1074      enum bfd_architecture arch;
1075      unsigned long mach;
1076 {
1077   const bfd_arch_info_type *ap = bfd_lookup_arch (arch, mach);
1078
1079   if (ap)
1080     return ap->bits_per_byte / 8;
1081   return 1;
1082 }