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, 2002, 2003, 2004
   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   bfd_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     (bfd_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   bfd_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   bfd_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   bfd_boolean (*add_one_symbol)
 213     PARAMS ((struct bfd_link_info *, bfd *, const char *, flagword,
 214              asection *, bfd_vma, const char *, bfd_boolean, bfd_boolean,
 215              struct bfd_link_hash_entry **));
 216
 217   /* Called to handle linking a dynamic object.  */
 218   bfd_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   bfd_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   bfd_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, bfd_boolean *skip,
 234              bfd_vma *relocation));
 235
 236   /* Called at the end of a link to finish up any dynamic linking
 237      information.  */
 238   bfd_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 enum machine_type
 280 {
 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 SUN's numbers.  */
 286   /* Make these up for the ns32k.  */
 287   M_NS32032 = (64),       /* NS32032 running ?  */
 288   M_NS32532 = (64 + 5),   /* NS32532 running mach.  */
 289   M_386 = 100,
 290   M_29K = 101,            /* AMD 29000.  */
 291   M_386_DYNIX = 102,      /* Sequent running dynix.  */
 292   M_ARM = 103,            /* Advanced Risc Machines ARM.  */
 293   M_SPARCLET = 131,       /* SPARClet = M_SPARC + 128.  */
 294   M_386_NETBSD = 134,     /* NetBSD/i386 binary.  */
 295   M_68K_NETBSD = 135,     /* NetBSD/m68k binary.  */
 296   M_68K4K_NETBSD = 136,   /* NetBSD/m68k4k binary.  */
 297   M_532_NETBSD = 137,     /* NetBSD/ns32k binary.  */
 298   M_SPARC_NETBSD = 138,   /* NetBSD/sparc binary.  */
 299   M_PMAX_NETBSD = 139,    /* NetBSD/pmax (MIPS little-endian) binary.  */
 300   M_VAX_NETBSD = 140,     /* NetBSD/vax binary.  */
 301   M_ALPHA_NETBSD = 141,   /* NetBSD/alpha binary.  */
 302   M_ARM6_NETBSD = 143,    /* NetBSD/arm32 binary.  */
 303   M_SPARCLET_1 = 147,     /* 0x93, reserved.  */
 304   M_VAX4K_NETBSD = 150,   /* NetBSD/vax 4K pages binary.  */
 305   M_MIPS1 = 151,          /* MIPS R2000/R3000 binary.  */
 306   M_MIPS2 = 152,          /* MIPS R4000/R6000 binary.  */
 307   M_SPARC64_NETBSD = 156, /* NetBSD/sparc64 binary.  */
 308   M_X86_64_NETBSD = 157,  /* NetBSD/amd64 binary.  */
 309   M_SPARCLET_2 = 163,     /* 0xa3, reserved.  */
 310   M_SPARCLET_3 = 179,     /* 0xb3, reserved.  */
 311   M_SPARCLET_4 = 195,     /* 0xc3, reserved.  */
 312   M_HP200 = 200,          /* HP 200 (68010) BSD binary.  */
 313   M_HP300 = (300 % 256),  /* HP 300 (68020+68881) BSD binary.  */
 314   M_HPUX = (0x20c % 256), /* HP 200/300 HPUX binary.  */
 315   M_SPARCLET_5 = 211,     /* 0xd3, reserved.  */
 316   M_SPARCLET_6 = 227,     /* 0xe3, reserved.  */
 317 /*M_SPARCLET_7 = 243     / * 0xf3, reserved.  */
 318   M_SPARCLITE_LE = 243,
 319   M_CRIS = 255            /* Axis CRIS binary.  */
 320 };
 321
 322 #define N_DYNAMIC(exec) ((exec).a_info & 0x80000000)
 323
 324 #ifndef N_MAGIC
 325 # define N_MAGIC(exec) ((exec).a_info & 0xffff)
 326 #endif
 327
 328 #ifndef N_MACHTYPE
 329 # define N_MACHTYPE(exec) ((enum machine_type)(((exec).a_info >> 16) & 0xff))
 330 #endif
 331
 332 #ifndef N_FLAGS
 333 # define N_FLAGS(exec) (((exec).a_info >> 24) & 0xff)
 334 #endif
 335
 336 #ifndef N_SET_INFO
 337 # define N_SET_INFO(exec, magic, type, flags) \
 338 ((exec).a_info = ((magic) & 0xffff) \
 339  | (((int)(type) & 0xff) << 16) \
 340  | (((flags) & 0xff) << 24))
 341 #endif
 342
 343 #ifndef N_SET_DYNAMIC
 344 # define N_SET_DYNAMIC(exec, dynamic) \
 345 ((exec).a_info = (dynamic) ? (long) ((exec).a_info | 0x80000000) : \
 346 ((exec).a_info & 0x7fffffff))
 347 #endif
 348
 349 #ifndef N_SET_MAGIC
 350 # define N_SET_MAGIC(exec, magic) \
 351 ((exec).a_info = (((exec).a_info & 0xffff0000) | ((magic) & 0xffff)))
 352 #endif
 353
 354 #ifndef N_SET_MACHTYPE
 355 # define N_SET_MACHTYPE(exec, machtype) \
 356 ((exec).a_info = \
 357  ((exec).a_info&0xff00ffff) | ((((int)(machtype))&0xff) << 16))
 358 #endif
 359
 360 #ifndef N_SET_FLAGS
 361 # define N_SET_FLAGS(exec, flags) \
 362 ((exec).a_info = \
 363  ((exec).a_info&0x00ffffff) | (((flags) & 0xff) << 24))
 364 #endif
 365
 366 typedef struct aout_symbol
 367 {
 368   asymbol symbol;
 369   short desc;
 370   char other;
 371   unsigned char type;
 372 } aout_symbol_type;
 373
 374 /* The `tdata' struct for all a.out-like object file formats.
 375    Various things depend on this struct being around any time an a.out
 376    file is being handled.  An example is dbxread.c in GDB.  */
 377
 378 struct aoutdata
 379 {
 380   struct internal_exec *hdr;            /* Exec file header.  */
 381   aout_symbol_type *symbols;            /* Symtab for input bfd.  */
 382
 383   /* For ease, we do this.  */
 384   asection *textsec;
 385   asection *datasec;
 386   asection *bsssec;
 387
 388   /* We remember these offsets so that after check_file_format, we have
 389      no dependencies on the particular format of the exec_hdr.  */
 390   file_ptr sym_filepos;
 391   file_ptr str_filepos;
 392
 393   /* Size of a relocation entry in external form.  */
 394   unsigned reloc_entry_size;
 395
 396   /* Size of a symbol table entry in external form.  */
 397   unsigned symbol_entry_size;
 398
 399   /* Page size - needed for alignment of demand paged files.  */
 400   unsigned long page_size;
 401
 402   /* Segment size - needed for alignment of demand paged files.  */
 403   unsigned long segment_size;
 404
 405   /* Zmagic disk block size - need to align the start of the text
 406      section in ZMAGIC binaries.  Normally the same as page_size.  */
 407   unsigned long zmagic_disk_block_size;
 408
 409   unsigned exec_bytes_size;
 410   unsigned vma_adjusted : 1;
 411
 412   /* Used when a bfd supports several highly similar formats.  */
 413   enum
 414     {
 415       default_format = 0,
 416       /* Used on HP 9000/300 running HP/UX.  See hp300hpux.c.  */
 417       gnu_encap_format,
 418       /* Used on Linux, 386BSD, etc.  See include/aout/aout64.h.  */
 419       q_magic_format
 420     } subformat;
 421
 422   enum
 423     {
 424       undecided_magic = 0,
 425       z_magic,
 426       o_magic,
 427       n_magic
 428     } magic;
 429
 430   /* A buffer for find_nearest_line.  */
 431   char *line_buf;
 432
 433   /* The external symbol information.  */
 434   struct external_nlist *external_syms;
 435   bfd_size_type external_sym_count;
 436   bfd_window sym_window;
 437   char *external_strings;
 438   bfd_size_type external_string_size;
 439   bfd_window string_window;
 440   struct aout_link_hash_entry **sym_hashes;
 441
 442   /* A pointer for shared library information.  */
 443   PTR dynamic_info;
 444
 445   /* A mapping from local symbols to offsets into the global offset
 446      table, used when linking on SunOS.  This is indexed by the symbol
 447      index.  */
 448   bfd_vma *local_got_offsets;
 449 };
 450
 451 struct  aout_data_struct
 452 {
 453   struct aoutdata a;
 454   struct internal_exec e;
 455 };
 456
 457 #define adata(bfd)                         ((bfd)->tdata.aout_data->a)
 458 #define exec_hdr(bfd)                      (adata (bfd).hdr)
 459 #define obj_aout_symbols(bfd)              (adata (bfd).symbols)
 460 #define obj_textsec(bfd)                   (adata (bfd).textsec)
 461 #define obj_datasec(bfd)                   (adata (bfd).datasec)
 462 #define obj_bsssec(bfd)                    (adata (bfd).bsssec)
 463 #define obj_sym_filepos(bfd)               (adata (bfd).sym_filepos)
 464 #define obj_str_filepos(bfd)               (adata (bfd).str_filepos)
 465 #define obj_reloc_entry_size(bfd)          (adata (bfd).reloc_entry_size)
 466 #define obj_symbol_entry_size(bfd)         (adata (bfd).symbol_entry_size)
 467 #define obj_aout_subformat(bfd)            (adata (bfd).subformat)
 468 #define obj_aout_external_syms(bfd)        (adata (bfd).external_syms)
 469 #define obj_aout_external_sym_count(bfd)   (adata (bfd).external_sym_count)
 470 #define obj_aout_sym_window(bfd)           (adata (bfd).sym_window)
 471 #define obj_aout_external_strings(bfd)     (adata (bfd).external_strings)
 472 #define obj_aout_external_string_size(bfd) (adata (bfd).external_string_size)
 473 #define obj_aout_string_window(bfd)        (adata (bfd).string_window)
 474 #define obj_aout_sym_hashes(bfd)           (adata (bfd).sym_hashes)
 475 #define obj_aout_dynamic_info(bfd)         (adata (bfd).dynamic_info)
 476
 477 /* We take the address of the first element of an asymbol to ensure that the
 478    macro is only ever applied to an asymbol.  */
 479 #define aout_symbol(asymbol) ((aout_symbol_type *)(&(asymbol)->the_bfd))
 480
 481 /* Information we keep for each a.out section.  This is currently only
 482    used by the a.out backend linker.  */
 483
 484 struct aout_section_data_struct
 485 {
 486   /* The unswapped relocation entries for this section.  */
 487   PTR relocs;
 488 };
 489
 490 #define aout_section_data(s) \
 491   ((struct aout_section_data_struct *) (s)->used_by_bfd)
 492
 493 #define set_aout_section_data(s,v) \
 494   ((s)->used_by_bfd = (PTR)&(v)->relocs)
 495
 496 /* Prototype declarations for functions defined in aoutx.h.  */
 497
 498 extern bfd_boolean NAME(aout,squirt_out_relocs)
 499   PARAMS ((bfd *, asection *));
 500
 501 extern bfd_boolean NAME(aout,make_sections)
 502   PARAMS ((bfd *));
 503
 504 extern const bfd_target * NAME(aout,some_aout_object_p)
 505   PARAMS ((bfd *, struct internal_exec *, const bfd_target *(*) (bfd *)));
 506
 507 extern bfd_boolean NAME(aout,mkobject)
 508   PARAMS ((bfd *));
 509
 510 extern enum machine_type NAME(aout,machine_type)
 511   PARAMS ((enum bfd_architecture, unsigned long, bfd_boolean *));
 512
 513 extern bfd_boolean NAME(aout,set_arch_mach)
 514   PARAMS ((bfd *, enum bfd_architecture, unsigned long));
 515
 516 extern bfd_boolean NAME(aout,new_section_hook)
 517   PARAMS ((bfd *, asection *));
 518
 519 extern bfd_boolean NAME(aout,set_section_contents)
 520   PARAMS ((bfd *, sec_ptr, const PTR, file_ptr, bfd_size_type));
 521
 522 extern asymbol * NAME(aout,make_empty_symbol)
 523   PARAMS ((bfd *));
 524
 525 extern bfd_boolean NAME(aout,translate_symbol_table)
 526   PARAMS ((bfd *, aout_symbol_type *, struct external_nlist *, bfd_size_type,
 527            char *, bfd_size_type, bfd_boolean));
 528
 529 extern bfd_boolean NAME(aout,slurp_symbol_table)
 530   PARAMS ((bfd *));
 531
 532 extern bfd_boolean NAME(aout,write_syms)
 533   PARAMS ((bfd *));
 534
 535 extern void NAME(aout,reclaim_symbol_table)
 536   PARAMS ((bfd *));
 537
 538 extern long NAME(aout,get_symtab_upper_bound)
 539   PARAMS ((bfd *));
 540
 541 extern long NAME(aout,canonicalize_symtab)
 542   PARAMS ((bfd *, asymbol **));
 543
 544 extern void NAME(aout,swap_ext_reloc_in)
 545   PARAMS ((bfd *, struct reloc_ext_external *, arelent *, asymbol **,
 546            bfd_size_type));
 547 extern void NAME(aout,swap_std_reloc_in)
 548   PARAMS ((bfd *, struct reloc_std_external *, arelent *, asymbol **,
 549            bfd_size_type));
 550
 551 extern reloc_howto_type * NAME(aout,reloc_type_lookup)
 552   PARAMS ((bfd *, bfd_reloc_code_real_type));
 553
 554 extern bfd_boolean NAME(aout,slurp_reloc_table)
 555   PARAMS ((bfd *, sec_ptr, asymbol **));
 556
 557 extern long NAME(aout,canonicalize_reloc)
 558   PARAMS ((bfd *, sec_ptr, arelent **, asymbol **));
 559
 560 extern long NAME(aout,get_reloc_upper_bound)
 561   PARAMS ((bfd *, sec_ptr));
 562
 563 extern void NAME(aout,reclaim_reloc)
 564   PARAMS ((bfd *, sec_ptr));
 565
 566 extern alent * NAME(aout,get_lineno)
 567   PARAMS ((bfd *, asymbol *));
 568
 569 extern void NAME(aout,print_symbol)
 570   PARAMS ((bfd *, PTR, asymbol *, bfd_print_symbol_type));
 571
 572 extern void NAME(aout,get_symbol_info)
 573   PARAMS ((bfd *, asymbol *, symbol_info *));
 574
 575 extern bfd_boolean NAME(aout,find_nearest_line)
 576   PARAMS ((bfd *, asection *, asymbol **, bfd_vma, const char **,
 577            const char **, unsigned int *));
 578
 579 extern long NAME(aout,read_minisymbols)
 580   PARAMS ((bfd *, bfd_boolean, PTR *, unsigned int *));
 581
 582 extern asymbol * NAME(aout,minisymbol_to_symbol)
 583   PARAMS ((bfd *, bfd_boolean, const PTR, asymbol *));
 584
 585 extern int NAME(aout,sizeof_headers)
 586   PARAMS ((bfd *, bfd_boolean));
 587
 588 extern bfd_boolean NAME(aout,adjust_sizes_and_vmas)
 589   PARAMS ((bfd *, bfd_size_type *, file_ptr *));
 590
 591 extern void NAME(aout,swap_exec_header_in)
 592   PARAMS ((bfd *, struct external_exec *, struct internal_exec *));
 593
 594 extern void NAME(aout,swap_exec_header_out)
 595   PARAMS ((bfd *, struct internal_exec *, struct external_exec *));
 596
 597 extern struct bfd_hash_entry * NAME(aout,link_hash_newfunc)
 598   PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
 599
 600 extern bfd_boolean NAME(aout,link_hash_table_init)
 601   PARAMS ((struct aout_link_hash_table *, bfd *,
 602            struct bfd_hash_entry *(*) (struct bfd_hash_entry *,
 603                                        struct bfd_hash_table *,
 604                                        const char *)));
 605
 606 extern struct bfd_link_hash_table * NAME(aout,link_hash_table_create)
 607   PARAMS ((bfd *));
 608
 609 extern bfd_boolean NAME(aout,link_add_symbols)
 610   PARAMS ((bfd *, struct bfd_link_info *));
 611
 612 extern bfd_boolean NAME(aout,final_link)
 613   PARAMS ((bfd *, struct bfd_link_info *,
 614            void (*) (bfd *, file_ptr *, file_ptr *, file_ptr *)));
 615
 616 extern bfd_boolean NAME(aout,bfd_free_cached_info)
 617   PARAMS ((bfd *));
 618
 619 /* A.out uses the generic versions of these routines...  */
 620
 621 #define aout_16_get_section_contents    _bfd_generic_get_section_contents
 622
 623 #define aout_32_get_section_contents    _bfd_generic_get_section_contents
 624
 625 #define aout_64_get_section_contents    _bfd_generic_get_section_contents
 626 #ifndef NO_WRITE_HEADER_KLUDGE
 627 #define NO_WRITE_HEADER_KLUDGE 0
 628 #endif
 629
 630 #ifndef aout_32_bfd_is_local_label_name
 631 #define aout_32_bfd_is_local_label_name bfd_generic_is_local_label_name
 632 #endif
 633
 634 #ifndef WRITE_HEADERS
 635 #define WRITE_HEADERS(abfd, execp)                                            \
 636       {                                                                       \
 637         bfd_size_type text_size; /* Dummy vars.  */                           \
 638         file_ptr text_end;                                                    \
 639         if (adata(abfd).magic == undecided_magic)                             \
 640           NAME(aout,adjust_sizes_and_vmas) (abfd, &text_size, &text_end);     \
 641                                                                               \
 642         execp->a_syms = bfd_get_symcount (abfd) * EXTERNAL_NLIST_SIZE;        \
 643         execp->a_entry = bfd_get_start_address (abfd);                        \
 644                                                                               \
 645         execp->a_trsize = ((obj_textsec (abfd)->reloc_count) *                \
 646                            obj_reloc_entry_size (abfd));                      \
 647         execp->a_drsize = ((obj_datasec (abfd)->reloc_count) *                \
 648                            obj_reloc_entry_size (abfd));                      \
 649         NAME(aout,swap_exec_header_out) (abfd, execp, &exec_bytes);           \
 650                                                                               \
 651         if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0                      \
 652             || bfd_bwrite ((PTR) &exec_bytes, (bfd_size_type) EXEC_BYTES_SIZE,\
 653                           abfd) != EXEC_BYTES_SIZE)                           \
 654           return FALSE;                                                       \
 655         /* Now write out reloc info, followed by syms and strings.  */        \
 656                                                                               \
 657         if (bfd_get_outsymbols (abfd) != (asymbol **) NULL                    \
 658             && bfd_get_symcount (abfd) != 0)                                  \
 659           {                                                                   \
 660             if (bfd_seek (abfd, (file_ptr) (N_SYMOFF(*execp)), SEEK_SET) != 0)\
 661               return FALSE;                                                   \
 662                                                                               \
 663             if (! NAME(aout,write_syms) (abfd))                               \
 664               return FALSE;                                                   \
 665           }                                                                   \
 666                                                                               \
 667         if (bfd_seek (abfd, (file_ptr) (N_TRELOFF (*execp)), SEEK_SET) != 0)  \
 668           return FALSE;                                                       \
 669         if (!NAME(aout,squirt_out_relocs) (abfd, obj_textsec (abfd)))         \
 670           return FALSE;                                                       \
 671                                                                               \
 672         if (bfd_seek (abfd, (file_ptr) (N_DRELOFF (*execp)), SEEK_SET) != 0)  \
 673           return FALSE;                                                       \
 674         if (!NAME(aout,squirt_out_relocs) (abfd, obj_datasec (abfd)))         \
 675           return FALSE;                                                       \
 676       }
 677 #endif
 678
 679 /* Test if a read-only section can be merged with .text.  This is
 680    possible if:
 681
 682    1. Section has file contents and is read-only.
 683    2. The VMA of the section is after the end of .text and before
 684       the start of .data.
 685    3. The image is demand-pageable (otherwise, a_text in the header
 686       will not reflect the gap between .text and .data).  */
 687
 688 #define aout_section_merge_with_text_p(abfd, sec)                       \
 689   (((sec)->flags & (SEC_HAS_CONTENTS | SEC_READONLY)) ==                \
 690       (SEC_HAS_CONTENTS | SEC_READONLY)                                 \
 691    && obj_textsec (abfd) != NULL                                        \
 692    && obj_datasec (abfd) != NULL                                        \
 693    && (sec)->vma >= (obj_textsec (abfd)->vma +                          \
 694                      obj_textsec (abfd)->_cooked_size)                  \
 695    && ((sec)->vma + (sec)->_cooked_size) <= obj_datasec (abfd)->vma     \
 696    && ((abfd)->flags & D_PAGED) != 0)
 697
 698 #endif /* ! defined (LIBAOUT_H) */