bfd/libaout.h

   1 /* BFD back-end data structures for a.out (and similar) files.
   2    Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
   3    2000, 2001
   4    Free Software Foundation, Inc.
   5    Written by 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 #ifndef LIBAOUT_H
  24 #define LIBAOUT_H
  25
  26 /* We try to encapsulate the differences in the various a.out file
  27    variants in a few routines, and otherwise share large masses of code.
  28    This means we only have to fix bugs in one place, most of the time.  */
  29
  30 #include "bfdlink.h"
  31
  32 /* Macros for accessing components in an aout header.  Saves cluttering
  33    the source with (bfd_vma) and (bfd_byte *) casts.  */
  34
  35 #define H_PUT_64(abfd, val, where) \
  36   bfd_h_put_64 ((abfd), (bfd_vma) (val), (bfd_byte *) (where))
  37
  38 #define H_PUT_32(abfd, val, where) \
  39   bfd_h_put_32 ((abfd), (bfd_vma) (val), (bfd_byte *) (where))
  40
  41 #define H_PUT_16(abfd, val, where) \
  42   bfd_h_put_16 ((abfd), (bfd_vma) (val), (bfd_byte *) (where))
  43
  44 #define H_PUT_8 bfd_h_put_8
  45
  46 #define H_PUT_S64(abfd, val, where) \
  47   bfd_h_put_signed_64 ((abfd), (bfd_vma) (val), (bfd_byte *) (where))
  48
  49 #define H_PUT_S32(abfd, val, where) \
  50   bfd_h_put_signed_32 ((abfd), (bfd_vma) (val), (bfd_byte *) (where))
  51
  52 #define H_PUT_S16(abfd, val, where) \
  53   bfd_h_put_signed_16 ((abfd), (bfd_vma) (val), (bfd_byte *) (where))
  54
  55 #define H_PUT_S8 bfd_h_put_signed_8
  56
  57 #define H_GET_64(abfd, where) \
  58   bfd_h_get_64 ((abfd), (bfd_byte *) (where))
  59
  60 #define H_GET_32(abfd, where) \
  61   bfd_h_get_32 ((abfd), (bfd_byte *) (where))
  62
  63 #define H_GET_16(abfd, where) \
  64   bfd_h_get_16 ((abfd), (bfd_byte *) (where))
  65
  66 #define H_GET_8 bfd_h_get_8
  67
  68 #define H_GET_S64(abfd, where) \
  69   bfd_h_get_signed_64 ((abfd), (bfd_byte *) (where))
  70
  71 #define H_GET_S32(abfd, where) \
  72   bfd_h_get_signed_32 ((abfd), (bfd_byte *) (where))
  73
  74 #define H_GET_S16(abfd, where) \
  75   bfd_h_get_signed_16 ((abfd), (bfd_byte *) (where))
  76
  77 #define H_GET_S8 bfd_h_get_signed_8
  78
  79 /* Parameterize the a.out code based on whether it is being built
  80    for a 32-bit architecture or a 64-bit architecture.  */
  81 /* Do not "beautify" the CONCAT* macro args.  Traditional C will not
  82    remove whitespace added here, and thus will fail to concatenate
  83    the tokens.  */
  84 #if ARCH_SIZE==64
  85 #define GET_WORD H_GET_64
  86 #define GET_SWORD H_GET_S64
  87 #define GET_MAGIC H_GET_32
  88 #define PUT_WORD H_PUT_64
  89 #define PUT_MAGIC H_PUT_32
  90 #ifndef NAME
  91 #define NAME(x,y) CONCAT3 (x,_64_,y)
  92 #endif
  93 #define JNAME(x) CONCAT2 (x,_64)
  94 #define BYTES_IN_WORD 8
  95 #else
  96 #if ARCH_SIZE==16
  97 #define GET_WORD H_GET_16
  98 #define GET_SWORD H_GET_S16
  99 #define GET_MAGIC H_GET_16
 100 #define PUT_WORD H_PUT_16
 101 #define PUT_MAGIC H_PUT_16
 102 #ifndef NAME
 103 #define NAME(x,y) CONCAT3 (x,_16_,y)
 104 #endif
 105 #define JNAME(x) CONCAT2 (x,_16)
 106 #define BYTES_IN_WORD 2
 107 #else /* ARCH_SIZE == 32 */
 108 #define GET_WORD H_GET_32
 109 #define GET_SWORD H_GET_S32
 110 #define GET_MAGIC H_GET_32
 111 #define PUT_WORD H_PUT_32
 112 #define PUT_MAGIC H_PUT_32
 113 #ifndef NAME
 114 #define NAME(x,y) CONCAT3 (x,_32_,y)
 115 #endif
 116 #define JNAME(x) CONCAT2 (x,_32)
 117 #define BYTES_IN_WORD 4
 118 #endif /* ARCH_SIZE==32 */
 119 #endif /* ARCH_SIZE==64 */
 120
 121 /* Declare at file level, since used in parameter lists, which have
 122    weird scope.  */
 123 struct external_exec;
 124 struct external_nlist;
 125 struct reloc_ext_external;
 126 struct reloc_std_external;
 127 \f
 128 /* a.out backend linker hash table entries.  */
 129
 130 struct aout_link_hash_entry
 131 {
 132   struct bfd_link_hash_entry root;
 133   /* Whether this symbol has been written out.  */
 134   boolean written;
 135   /* Symbol index in output file.  */
 136   int indx;
 137 };
 138
 139 /* a.out backend linker hash table.  */
 140
 141 struct aout_link_hash_table
 142 {
 143   struct bfd_link_hash_table root;
 144 };
 145
 146 /* Look up an entry in an a.out link hash table.  */
 147
 148 #define aout_link_hash_lookup(table, string, create, copy, follow) \
 149   ((struct aout_link_hash_entry *) \
 150    bfd_link_hash_lookup (&(table)->root, (string), (create), (copy), (follow)))
 151
 152 /* Traverse an a.out link hash table.  */
 153
 154 #define aout_link_hash_traverse(table, func, info)                      \
 155   (bfd_link_hash_traverse                                               \
 156    (&(table)->root,                                                     \
 157     (boolean (*) PARAMS ((struct bfd_link_hash_entry *, PTR))) (func),  \
 158     (info)))
 159
 160 /* Get the a.out link hash table from the info structure.  This is
 161    just a cast.  */
 162
 163 #define aout_hash_table(p) ((struct aout_link_hash_table *) ((p)->hash))
 164 \f
 165 /* Back-end information for various a.out targets.  */
 166 struct aout_backend_data
 167 {
 168   /* Are ZMAGIC files mapped contiguously?  If so, the text section may
 169      need more padding, if the segment size (granularity for memory access
 170      control) is larger than the page size.  */
 171   unsigned char zmagic_mapped_contiguous;
 172   /* If this flag is set, ZMAGIC/NMAGIC file headers get mapped in with the
 173      text section, which starts immediately after the file header.
 174      If not, the text section starts on the next page.  */
 175   unsigned char text_includes_header;
 176
 177   /* If this flag is set, then if the entry address is not in the
 178      first SEGMENT_SIZE bytes of the text section, it is taken to be
 179      the address of the start of the text section.  This can be useful
 180      for kernels.  */
 181   unsigned char entry_is_text_address;
 182
 183   /* The value to pass to N_SET_FLAGS.  */
 184   unsigned char exec_hdr_flags;
 185
 186   /* If the text section VMA isn't specified, and we need an absolute
 187      address, use this as the default.  If we're producing a relocatable
 188      file, zero is always used.  */
 189   /* ?? Perhaps a callback would be a better choice?  Will this do anything
 190      reasonable for a format that handles multiple CPUs with different
 191      load addresses for each?  */
 192   bfd_vma default_text_vma;
 193
 194   /* Callback for setting the page and segment sizes, if they can't be
 195      trivially determined from the architecture.  */
 196   boolean (*set_sizes)
 197     PARAMS ((bfd *));
 198
 199   /* zmagic files only. For go32, the length of the exec header contributes
 200      to the size of the text section in the file for alignment purposes but
 201      does *not* get counted in the length of the text section. */
 202   unsigned char exec_header_not_counted;
 203
 204   /* Callback from the add symbols phase of the linker code to handle
 205      a dynamic object.  */
 206   boolean (*add_dynamic_symbols)
 207     PARAMS ((bfd *, struct bfd_link_info *, struct external_nlist **,
 208              bfd_size_type *, char **));
 209
 210   /* Callback from the add symbols phase of the linker code to handle
 211      adding a single symbol to the global linker hash table.  */
 212   boolean (*add_one_symbol)
 213     PARAMS ((struct bfd_link_info *, bfd *, const char *, flagword,
 214              asection *, bfd_vma, const char *, boolean, boolean,
 215              struct bfd_link_hash_entry **));
 216
 217   /* Called to handle linking a dynamic object.  */
 218   boolean (*link_dynamic_object)
 219     PARAMS ((struct bfd_link_info *, bfd *));
 220
 221   /* Called for each global symbol being written out by the linker.
 222      This should write out the dynamic symbol information.  */
 223   boolean (*write_dynamic_symbol)
 224     PARAMS ((bfd *, struct bfd_link_info *, struct aout_link_hash_entry *));
 225
 226   /* If this callback is not NULL, the linker calls it for each reloc.
 227      RELOC is a pointer to the unswapped reloc.  If *SKIP is set to
 228      true, the reloc will be skipped.  *RELOCATION may be changed to
 229      change the effects of the relocation.  */
 230   boolean (*check_dynamic_reloc)
 231     PARAMS ((struct bfd_link_info *info, bfd *input_bfd,
 232              asection *input_section, struct aout_link_hash_entry *h,
 233              PTR reloc, bfd_byte *contents, boolean *skip,
 234              bfd_vma *relocation));
 235
 236   /* Called at the end of a link to finish up any dynamic linking
 237      information.  */
 238   boolean (*finish_dynamic_link)
 239     PARAMS ((bfd *, struct bfd_link_info *));
 240 };
 241 #define aout_backend_info(abfd) \
 242         ((const struct aout_backend_data *)((abfd)->xvec->backend_data))
 243
 244 /* This is the layout in memory of a "struct exec" while we process it.
 245    All 'lengths' are given as a number of bytes.
 246    All 'alignments' are for relinkable files only;  an alignment of
 247         'n' indicates the corresponding segment must begin at an
 248         address that is a multiple of (2**n).  */
 249
 250 struct internal_exec
 251 {
 252     long a_info;                /* Magic number and flags, packed */
 253     bfd_vma a_text;             /* length of text, in bytes  */
 254     bfd_vma a_data;             /* length of data, in bytes  */
 255     bfd_vma a_bss;              /* length of uninitialized data area in mem */
 256     bfd_vma a_syms;             /* length of symbol table data in file */
 257     bfd_vma a_entry;            /* start address */
 258     bfd_vma a_trsize;           /* length of text's relocation info, in bytes */
 259     bfd_vma a_drsize;           /* length of data's relocation info, in bytes */
 260     /* Added for i960 */
 261     bfd_vma a_tload;            /* Text runtime load address */
 262     bfd_vma a_dload;            /* Data runtime load address */
 263     unsigned char a_talign;     /* Alignment of text segment */
 264     unsigned char a_dalign;     /* Alignment of data segment */
 265     unsigned char a_balign;     /* Alignment of bss segment */
 266     char a_relaxable;           /* Enough info for linker relax */
 267 };
 268
 269 /* Magic number is written
 270 < MSB          >
 271 3130292827262524232221201918171615141312111009080706050403020100
 272 < FLAGS        >< MACHINE TYPE ><  MAGIC NUMBER                >
 273 */
 274 /* Magic number for NetBSD is
 275 <MSB           >
 276 3130292827262524232221201918171615141312111009080706050403020100
 277 < FLAGS    >< MACHINE TYPE     ><  MAGIC NUMBER                >
 278 */
 279
 280 enum machine_type {
 281   M_UNKNOWN = 0,
 282   M_68010 = 1,
 283   M_68020 = 2,
 284   M_SPARC = 3,
 285   /* skip a bunch so we don't run into any of suns numbers */
 286   /* make these up for the ns32k*/
 287   M_NS32032 = (64),             /* ns32032 running ? */
 288   M_NS32532 = (64 + 5),         /* ns32532 running mach */
 289
 290   M_386 = 100,
 291   M_29K = 101,          /* AMD 29000 */
 292   M_386_DYNIX = 102,    /* Sequent running dynix */
 293   M_ARM = 103,          /* Advanced Risc Machines ARM */
 294   M_SPARCLET = 131,     /* SPARClet = M_SPARC + 128 */
 295   M_386_NETBSD = 134,   /* NetBSD/i386 binary */
 296   M_68K_NETBSD = 135,   /* NetBSD/m68k binary */
 297   M_68K4K_NETBSD = 136, /* NetBSD/m68k4k binary */
 298   M_532_NETBSD = 137,   /* NetBSD/ns32k binary */
 299   M_SPARC_NETBSD = 138, /* NetBSD/sparc binary */
 300   M_PMAX_NETBSD = 139,  /* NetBSD/pmax (MIPS little-endian) binary */
 301   M_VAX_NETBSD = 140,   /* NetBSD/vax binary */
 302   M_ALPHA_NETBSD = 141, /* NetBSD/alpha binary */
 303   M_ARM6_NETBSD = 143,  /* NetBSD/arm32 binary */
 304   M_SPARCLET_1 = 147,   /* 0x93, reserved */
 305   M_MIPS1 = 151,        /* MIPS R2000/R3000 binary */
 306   M_MIPS2 = 152,        /* MIPS R4000/R6000 binary */
 307   M_SPARCLET_2 = 163,   /* 0xa3, reserved */
 308   M_SPARCLET_3 = 179,   /* 0xb3, reserved */
 309   M_SPARCLET_4 = 195,   /* 0xc3, reserved */
 310   M_HP200 = 200,        /* HP 200 (68010) BSD binary */
 311   M_HP300 = (300 % 256), /* HP 300 (68020+68881) BSD binary */
 312   M_HPUX = (0x20c % 256), /* HP 200/300 HPUX binary */
 313   M_SPARCLET_5 = 211,   /* 0xd3, reserved */
 314   M_SPARCLET_6 = 227,   /* 0xe3, reserved */
 315   /*  M_SPARCLET_7 = 243        / * 0xf3, reserved */
 316   M_SPARCLITE_LE = 243,
 317   M_CRIS = 255          /* Axis CRIS binary.  */
 318 };
 319
 320 #define N_DYNAMIC(exec) ((exec).a_info & 0x80000000)
 321
 322 #ifndef N_MAGIC
 323 # define N_MAGIC(exec) ((exec).a_info & 0xffff)
 324 #endif
 325
 326 #ifndef N_MACHTYPE
 327 # define N_MACHTYPE(exec) ((enum machine_type)(((exec).a_info >> 16) & 0xff))
 328 #endif
 329
 330 #ifndef N_FLAGS
 331 # define N_FLAGS(exec) (((exec).a_info >> 24) & 0xff)
 332 #endif
 333
 334 #ifndef N_SET_INFO
 335 # define N_SET_INFO(exec, magic, type, flags) \
 336 ((exec).a_info = ((magic) & 0xffff) \
 337  | (((int)(type) & 0xff) << 16) \
 338  | (((flags) & 0xff) << 24))
 339 #endif
 340
 341 #ifndef N_SET_DYNAMIC
 342 # define N_SET_DYNAMIC(exec, dynamic) \
 343 ((exec).a_info = (dynamic) ? (long) ((exec).a_info | 0x80000000) : \
 344 ((exec).a_info & 0x7fffffff))
 345 #endif
 346
 347 #ifndef N_SET_MAGIC
 348 # define N_SET_MAGIC(exec, magic) \
 349 ((exec).a_info = (((exec).a_info & 0xffff0000) | ((magic) & 0xffff)))
 350 #endif
 351
 352 #ifndef N_SET_MACHTYPE
 353 # define N_SET_MACHTYPE(exec, machtype) \
 354 ((exec).a_info = \
 355  ((exec).a_info&0xff00ffff) | ((((int)(machtype))&0xff) << 16))
 356 #endif
 357
 358 #ifndef N_SET_FLAGS
 359 # define N_SET_FLAGS(exec, flags) \
 360 ((exec).a_info = \
 361  ((exec).a_info&0x00ffffff) | (((flags) & 0xff) << 24))
 362 #endif
 363
 364 typedef struct aout_symbol {
 365   asymbol symbol;
 366   short desc;
 367   char other;
 368   unsigned char type;
 369 } aout_symbol_type;
 370
 371 /* The `tdata' struct for all a.out-like object file formats.
 372    Various things depend on this struct being around any time an a.out
 373    file is being handled.  An example is dbxread.c in GDB.  */
 374
 375 struct aoutdata {
 376   struct internal_exec *hdr;            /* exec file header */
 377   aout_symbol_type *symbols;            /* symtab for input bfd */
 378
 379   /* For ease, we do this */
 380   asection *textsec;
 381   asection *datasec;
 382   asection *bsssec;
 383
 384   /* We remember these offsets so that after check_file_format, we have
 385      no dependencies on the particular format of the exec_hdr.  */
 386   file_ptr sym_filepos;
 387   file_ptr str_filepos;
 388
 389   /* Size of a relocation entry in external form */
 390   unsigned reloc_entry_size;
 391
 392   /* Size of a symbol table entry in external form */
 393   unsigned symbol_entry_size;
 394
 395   /* Page size - needed for alignment of demand paged files. */
 396   unsigned long page_size;
 397
 398   /* Segment size - needed for alignment of demand paged files. */
 399   unsigned long segment_size;
 400
 401   /* Zmagic disk block size - need to align the start of the text
 402      section in ZMAGIC binaries.  Normally the same as page_size.  */
 403   unsigned long zmagic_disk_block_size;
 404
 405   unsigned exec_bytes_size;
 406   unsigned vma_adjusted : 1;
 407
 408   /* used when a bfd supports several highly similar formats */
 409   enum
 410     {
 411       default_format = 0,
 412       /* Used on HP 9000/300 running HP/UX.  See hp300hpux.c.  */
 413       gnu_encap_format,
 414       /* Used on Linux, 386BSD, etc.  See include/aout/aout64.h.  */
 415       q_magic_format
 416     } subformat;
 417
 418   enum
 419     {
 420       undecided_magic = 0,
 421       z_magic,
 422       o_magic,
 423       n_magic
 424     } magic;
 425
 426   /* A buffer for find_nearest_line.  */
 427   char *line_buf;
 428
 429   /* The external symbol information.  */
 430   struct external_nlist *external_syms;
 431   bfd_size_type external_sym_count;
 432   bfd_window sym_window;
 433   char *external_strings;
 434   bfd_size_type external_string_size;
 435   bfd_window string_window;
 436   struct aout_link_hash_entry **sym_hashes;
 437
 438   /* A pointer for shared library information.  */
 439   PTR dynamic_info;
 440
 441   /* A mapping from local symbols to offsets into the global offset
 442      table, used when linking on SunOS.  This is indexed by the symbol
 443      index.  */
 444   bfd_vma *local_got_offsets;
 445 };
 446
 447 struct  aout_data_struct {
 448     struct aoutdata a;
 449     struct internal_exec e;
 450 };
 451
 452 #define adata(bfd)              ((bfd)->tdata.aout_data->a)
 453 #define exec_hdr(bfd)           (adata(bfd).hdr)
 454 #define obj_aout_symbols(bfd)   (adata(bfd).symbols)
 455 #define obj_textsec(bfd)        (adata(bfd).textsec)
 456 #define obj_datasec(bfd)        (adata(bfd).datasec)
 457 #define obj_bsssec(bfd)         (adata(bfd).bsssec)
 458 #define obj_sym_filepos(bfd)    (adata(bfd).sym_filepos)
 459 #define obj_str_filepos(bfd)    (adata(bfd).str_filepos)
 460 #define obj_reloc_entry_size(bfd) (adata(bfd).reloc_entry_size)
 461 #define obj_symbol_entry_size(bfd) (adata(bfd).symbol_entry_size)
 462 #define obj_aout_subformat(bfd) (adata(bfd).subformat)
 463 #define obj_aout_external_syms(bfd) (adata(bfd).external_syms)
 464 #define obj_aout_external_sym_count(bfd) (adata(bfd).external_sym_count)
 465 #define obj_aout_sym_window(bfd) (adata(bfd).sym_window)
 466 #define obj_aout_external_strings(bfd) (adata(bfd).external_strings)
 467 #define obj_aout_external_string_size(bfd) (adata(bfd).external_string_size)
 468 #define obj_aout_string_window(bfd) (adata(bfd).string_window)
 469 #define obj_aout_sym_hashes(bfd) (adata(bfd).sym_hashes)
 470 #define obj_aout_dynamic_info(bfd) (adata(bfd).dynamic_info)
 471
 472 /* We take the address of the first element of an asymbol to ensure that the
 473    macro is only ever applied to an asymbol */
 474 #define aout_symbol(asymbol) ((aout_symbol_type *)(&(asymbol)->the_bfd))
 475
 476 /* Information we keep for each a.out section.  This is currently only
 477    used by the a.out backend linker.  */
 478
 479 struct aout_section_data_struct
 480 {
 481   /* The unswapped relocation entries for this section.  */
 482   PTR relocs;
 483 };
 484
 485 #define aout_section_data(s) \
 486   ((struct aout_section_data_struct *) (s)->used_by_bfd)
 487
 488 #define set_aout_section_data(s,v) \
 489   ((s)->used_by_bfd = (PTR)&(v)->relocs)
 490
 491 /* Prototype declarations for functions defined in aoutx.h  */
 492
 493 extern boolean NAME(aout,squirt_out_relocs)
 494   PARAMS ((bfd *, asection *));
 495
 496 extern boolean NAME(aout,make_sections)
 497   PARAMS ((bfd *));
 498
 499 extern const bfd_target * NAME(aout,some_aout_object_p)
 500   PARAMS ((bfd *, struct internal_exec *, const bfd_target *(*) (bfd *)));
 501
 502 extern boolean NAME(aout,mkobject)
 503   PARAMS ((bfd *));
 504
 505 extern enum machine_type NAME(aout,machine_type)
 506   PARAMS ((enum bfd_architecture, unsigned long, boolean *));
 507
 508 extern boolean NAME(aout,set_arch_mach)
 509   PARAMS ((bfd *, enum bfd_architecture, unsigned long));
 510
 511 extern boolean NAME(aout,new_section_hook)
 512   PARAMS ((bfd *, asection *));
 513
 514 extern boolean NAME(aout,set_section_contents)
 515   PARAMS ((bfd *, sec_ptr, PTR, file_ptr, bfd_size_type));
 516
 517 extern asymbol * NAME(aout,make_empty_symbol)
 518   PARAMS ((bfd *));
 519
 520 extern boolean NAME(aout,translate_symbol_table)
 521   PARAMS ((bfd *, aout_symbol_type *, struct external_nlist *, bfd_size_type,
 522            char *, bfd_size_type, boolean));
 523
 524 extern boolean NAME(aout,slurp_symbol_table)
 525   PARAMS ((bfd *));
 526
 527 extern boolean NAME(aout,write_syms)
 528   PARAMS ((bfd *));
 529
 530 extern void NAME(aout,reclaim_symbol_table)
 531   PARAMS ((bfd *));
 532
 533 extern long NAME(aout,get_symtab_upper_bound)
 534   PARAMS ((bfd *));
 535
 536 extern long NAME(aout,get_symtab)
 537   PARAMS ((bfd *, asymbol **));
 538
 539 extern void NAME(aout,swap_ext_reloc_in)
 540   PARAMS ((bfd *, struct reloc_ext_external *, arelent *, asymbol **,
 541            bfd_size_type));
 542 extern void NAME(aout,swap_std_reloc_in)
 543   PARAMS ((bfd *, struct reloc_std_external *, arelent *, asymbol **,
 544            bfd_size_type));
 545
 546 extern reloc_howto_type * NAME(aout,reloc_type_lookup)
 547   PARAMS ((bfd *, bfd_reloc_code_real_type));
 548
 549 extern boolean NAME(aout,slurp_reloc_table)
 550   PARAMS ((bfd *, sec_ptr, asymbol **));
 551
 552 extern long NAME(aout,canonicalize_reloc)
 553   PARAMS ((bfd *, sec_ptr, arelent **, asymbol **));
 554
 555 extern long NAME(aout,get_reloc_upper_bound)
 556   PARAMS ((bfd *, sec_ptr));
 557
 558 extern void NAME(aout,reclaim_reloc)
 559   PARAMS ((bfd *, sec_ptr));
 560
 561 extern alent * NAME(aout,get_lineno)
 562   PARAMS ((bfd *, asymbol *));
 563
 564 extern void NAME(aout,print_symbol)
 565   PARAMS ((bfd *, PTR, asymbol *, bfd_print_symbol_type));
 566
 567 extern void NAME(aout,get_symbol_info)
 568   PARAMS ((bfd *, asymbol *, symbol_info *));
 569
 570 extern boolean NAME(aout,find_nearest_line)
 571   PARAMS ((bfd *, asection *, asymbol **, bfd_vma, const char **,
 572            const char **, unsigned int *));
 573
 574 extern long NAME(aout,read_minisymbols)
 575   PARAMS ((bfd *, boolean, PTR *, unsigned int *));
 576
 577 extern asymbol * NAME(aout,minisymbol_to_symbol)
 578   PARAMS ((bfd *, boolean, const PTR, asymbol *));
 579
 580 extern int NAME(aout,sizeof_headers)
 581   PARAMS ((bfd *, boolean));
 582
 583 extern boolean NAME(aout,adjust_sizes_and_vmas)
 584   PARAMS ((bfd *, bfd_size_type *, file_ptr *));
 585
 586 extern void NAME(aout,swap_exec_header_in)
 587   PARAMS ((bfd *, struct external_exec *, struct internal_exec *));
 588
 589 extern void NAME(aout,swap_exec_header_out)
 590   PARAMS ((bfd *, struct internal_exec *, struct external_exec *));
 591
 592 extern struct bfd_hash_entry * NAME(aout,link_hash_newfunc)
 593   PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
 594
 595 extern boolean NAME(aout,link_hash_table_init)
 596   PARAMS ((struct aout_link_hash_table *, bfd *,
 597            struct bfd_hash_entry *(*) (struct bfd_hash_entry *,
 598                                        struct bfd_hash_table *,
 599                                        const char *)));
 600
 601 extern struct bfd_link_hash_table * NAME(aout,link_hash_table_create)
 602   PARAMS ((bfd *));
 603
 604 extern boolean NAME(aout,link_add_symbols)
 605   PARAMS ((bfd *, struct bfd_link_info *));
 606
 607 extern boolean NAME(aout,final_link)
 608   PARAMS ((bfd *, struct bfd_link_info *,
 609            void (*) (bfd *, file_ptr *, file_ptr *, file_ptr *)));
 610
 611 extern boolean NAME(aout,bfd_free_cached_info)
 612   PARAMS ((bfd *));
 613
 614 /* A.out uses the generic versions of these routines... */
 615
 616 #define aout_16_get_section_contents    _bfd_generic_get_section_contents
 617
 618 #define aout_32_get_section_contents    _bfd_generic_get_section_contents
 619
 620 #define aout_64_get_section_contents    _bfd_generic_get_section_contents
 621 #ifndef NO_WRITE_HEADER_KLUDGE
 622 #define NO_WRITE_HEADER_KLUDGE 0
 623 #endif
 624
 625 #ifndef aout_32_bfd_is_local_label_name
 626 #define aout_32_bfd_is_local_label_name bfd_generic_is_local_label_name
 627 #endif
 628
 629 #ifndef WRITE_HEADERS
 630 #define WRITE_HEADERS(abfd, execp)                                            \
 631       {                                                                       \
 632         bfd_size_type text_size; /* dummy vars */                             \
 633         file_ptr text_end;                                                    \
 634         if (adata(abfd).magic == undecided_magic)                             \
 635           NAME(aout,adjust_sizes_and_vmas) (abfd, &text_size, &text_end);     \
 636                                                                               \
 637         execp->a_syms = bfd_get_symcount (abfd) * EXTERNAL_NLIST_SIZE;        \
 638         execp->a_entry = bfd_get_start_address (abfd);                        \
 639                                                                               \
 640         execp->a_trsize = ((obj_textsec (abfd)->reloc_count) *                \
 641                            obj_reloc_entry_size (abfd));                      \
 642         execp->a_drsize = ((obj_datasec (abfd)->reloc_count) *                \
 643                            obj_reloc_entry_size (abfd));                      \
 644         NAME(aout,swap_exec_header_out) (abfd, execp, &exec_bytes);           \
 645                                                                               \
 646         if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0                      \
 647             || bfd_bwrite ((PTR) &exec_bytes, (bfd_size_type) EXEC_BYTES_SIZE, \
 648                           abfd) != EXEC_BYTES_SIZE)                           \
 649           return false;                                                       \
 650         /* Now write out reloc info, followed by syms and strings */          \
 651                                                                               \
 652         if (bfd_get_outsymbols (abfd) != (asymbol **) NULL                    \
 653             && bfd_get_symcount (abfd) != 0)                                  \
 654           {                                                                   \
 655             if (bfd_seek (abfd, (file_ptr) (N_SYMOFF(*execp)), SEEK_SET) != 0)\
 656               return false;                                                   \
 657                                                                               \
 658             if (! NAME(aout,write_syms) (abfd))                               \
 659               return false;                                                   \
 660           }                                                                   \
 661                                                                               \
 662         if (bfd_seek (abfd, (file_ptr) (N_TRELOFF(*execp)), SEEK_SET) != 0)   \
 663           return false;                                                       \
 664         if (!NAME(aout,squirt_out_relocs) (abfd, obj_textsec (abfd)))         \
 665           return false;                                                       \
 666                                                                               \
 667         if (bfd_seek (abfd, (file_ptr) (N_DRELOFF(*execp)), SEEK_SET) != 0)   \
 668           return false;                                                       \
 669         if (!NAME(aout,squirt_out_relocs) (abfd, obj_datasec (abfd)))         \
 670           return false;                                                       \
 671       }
 672 #endif
 673
 674 #endif /* ! defined (LIBAOUT_H) */