bfd/bfd-in2.h

   1 /* Main header file for the bfd library -- portable access to object files.
   2    Copyright 1990, 1991, 1992, 1993 Free Software Foundation, Inc.
   3    Contributed by Cygnus Support.
   4
   5 ** NOTE: bfd.h and bfd-in2.h are GENERATED files.  Don't change them;
   6 ** instead, change bfd-in.h or the other BFD source files processed to
   7 ** generate these files.
   8
   9 This file is part of BFD, the Binary File Descriptor library.
  10
  11 This program is free software; you can redistribute it and/or modify
  12 it under the terms of the GNU General Public License as published by
  13 the Free Software Foundation; either version 2 of the License, or
  14 (at your option) any later version.
  15
  16 This program is distributed in the hope that it will be useful,
  17 but WITHOUT ANY WARRANTY; without even the implied warranty of
  18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19 GNU General Public License for more details.
  20
  21 You should have received a copy of the GNU General Public License
  22 along with this program; if not, write to the Free Software
  23 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  */
  24
  25 /* bfd.h -- The only header file required by users of the bfd library
  26
  27 The bfd.h file is generated from bfd-in.h and various .c files; if you
  28 change it, your changes will probably be lost.
  29
  30 All the prototypes and definitions following the comment "THE FOLLOWING
  31 IS EXTRACTED FROM THE SOURCE" are extracted from the source files for
  32 BFD.  If you change it, someone oneday will extract it from the source
  33 again, and your changes will be lost.  To save yourself from this bind,
  34 change the definitions in the source in the bfd directory.  Type "make
  35 docs" and then "make headers" in that directory, and magically this file
  36 will change to reflect your changes.
  37
  38 If you don't have the tools to perform the extraction, then you are
  39 safe from someone on your system trampling over your header files.
  40 You should still maintain the equivalence between the source and this
  41 file though; every change you make to the .c file should be reflected
  42 here.  */
  43
  44 #ifndef __BFD_H_SEEN__
  45 #define __BFD_H_SEEN__
  46
  47 #include "ansidecl.h"
  48 #include "obstack.h"
  49
  50 #define BFD_VERSION "2.2"
  51
  52 #define BFD_ARCH_SIZE @WORDSIZE@
  53
  54 #if BFD_ARCH_SIZE >= 64
  55 #define BFD64
  56 #endif
  57
  58 #ifndef INLINE
  59 #if __GNUC__ >= 2
  60 #define INLINE __inline__
  61 #else
  62 #define INLINE
  63 #endif
  64 #endif
  65
  66 /* 64-bit type definition (if any) from bfd's sysdep.h goes here */
  67
  68
  69 /* forward declaration */
  70 typedef struct _bfd bfd;
  71
  72 /* To squelch erroneous compiler warnings ("illegal pointer
  73    combination") from the SVR3 compiler, we would like to typedef
  74    boolean to int (it doesn't like functions which return boolean.
  75    Making sure they are never implicitly declared to return int
  76    doesn't seem to help).  But this file is not configured based on
  77    the host.  */
  78 /* General rules: functions which are boolean return true on success
  79    and false on failure (unless they're a predicate).   -- bfd.doc */
  80 /* I'm sure this is going to break something and someone is going to
  81    force me to change it. */
  82 /* typedef enum boolean {false, true} boolean; */
  83 /* Yup, SVR4 has a "typedef enum boolean" in <sys/types.h>  -fnf */
  84 /* It gets worse if the host also defines a true/false enum... -sts */
  85 #ifndef TRUE_FALSE_ALREADY_DEFINED
  86 typedef enum bfd_boolean {false, true} boolean;
  87 #define BFD_TRUE_FALSE
  88 #else
  89 typedef enum bfd_boolean {bfd_false, bfd_true} boolean;
  90 #endif
  91
  92 /* A pointer to a position in a file.  */
  93 /* FIXME:  This should be using off_t from <sys/types.h>.
  94    For now, try to avoid breaking stuff by not including <sys/types.h> here.
  95    This will break on systems with 64-bit file offsets (e.g. 4.4BSD).
  96    Probably the best long-term answer is to avoid using file_ptr AND off_t
  97    in this header file, and to handle this in the BFD implementation
  98    rather than in its interface.  */
  99 /* typedef off_t        file_ptr; */
 100 typedef long int file_ptr;
 101
 102 /* Support for different sizes of target format ints and addresses.  If the
 103    host implements 64-bit values, it defines HOST_64_BIT to be the appropriate
 104    type.  Otherwise, this code will fall back on gcc's "long long" type if gcc
 105    is being used.  HOST_64_BIT must be defined in such a way as to be a valid
 106    type name by itself or with "unsigned" prefixed.  It should be a signed
 107    type by itself.
 108
 109    If neither is the case, then compilation will fail if 64-bit targets are
 110    requested.  If you don't request any 64-bit targets, you should be safe. */
 111
 112 #ifdef  BFD64
 113
 114 #if defined (__GNUC__) && !defined (HOST_64_BIT)
 115 #define HOST_64_BIT long long
 116 typedef HOST_64_BIT int64_type;
 117 typedef unsigned HOST_64_BIT uint64_type;
 118 #endif
 119
 120 #if !defined (uint64_type) && defined (__GNUC__)
 121 #define uint64_type unsigned long long
 122 #define int64_type long long
 123 #endif
 124 #ifndef uint64_typeLOW
 125 #define uint64_typeLOW(x) ((unsigned long)(((x) & 0xffffffff)))
 126 #define uint64_typeHIGH(x) ((unsigned long)(((x) >> 32) & 0xffffffff))
 127 #endif
 128
 129 typedef unsigned HOST_64_BIT bfd_vma;
 130 typedef HOST_64_BIT bfd_signed_vma;
 131 typedef unsigned HOST_64_BIT bfd_size_type;
 132 typedef unsigned HOST_64_BIT symvalue;
 133 #ifndef fprintf_vma
 134 #define fprintf_vma(s,x) \
 135                 fprintf(s,"%08lx%08lx", uint64_typeHIGH(x), uint64_typeLOW(x))
 136 #define sprintf_vma(s,x) \
 137                 sprintf(s,"%08lx%08lx", uint64_typeHIGH(x), uint64_typeLOW(x))
 138 #endif
 139 #else /* not BFD64  */
 140
 141 /* Represent a target address.  Also used as a generic unsigned type
 142    which is guaranteed to be big enough to hold any arithmetic types
 143    we need to deal with.  */
 144 typedef unsigned long bfd_vma;
 145
 146 /* A generic signed type which is guaranteed to be big enough to hold any
 147    arithmetic types we need to deal with.  Can be assumed to be compatible
 148    with bfd_vma in the same way that signed and unsigned ints are compatible
 149    (as parameters, in assignment, etc).  */
 150 typedef long bfd_signed_vma;
 151
 152 typedef unsigned long symvalue;
 153 typedef unsigned long bfd_size_type;
 154
 155 /* Print a bfd_vma x on stream s.  */
 156 #define fprintf_vma(s,x) fprintf(s, "%08lx", x)
 157 #define sprintf_vma(s,x) sprintf(s, "%08lx", x)
 158 #endif /* not BFD64  */
 159 #define printf_vma(x) fprintf_vma(stdout,x)
 160
 161 typedef unsigned int flagword;  /* 32 bits of flags */
 162 \f
 163 /** File formats */
 164
 165 typedef enum bfd_format {
 166               bfd_unknown = 0,  /* file format is unknown */
 167               bfd_object,       /* linker/assember/compiler output */
 168               bfd_archive,      /* object archive file */
 169               bfd_core,         /* core dump */
 170               bfd_type_end}     /* marks the end; don't use it! */
 171          bfd_format;
 172
 173 /* Values that may appear in the flags field of a BFD.  These also
 174    appear in the object_flags field of the bfd_target structure, where
 175    they indicate the set of flags used by that backend (not all flags
 176    are meaningful for all object file formats) (FIXME: at the moment,
 177    the object_flags values have mostly just been copied from backend
 178    to another, and are not necessarily correct).  */
 179
 180 /* No flags.  */
 181 #define NO_FLAGS        0x00
 182
 183 /* BFD contains relocation entries.  */
 184 #define HAS_RELOC       0x01
 185
 186 /* BFD is directly executable.  */
 187 #define EXEC_P          0x02
 188
 189 /* BFD has line number information (basically used for F_LNNO in a
 190    COFF header).  */
 191 #define HAS_LINENO      0x04
 192
 193 /* BFD has debugging information.  */
 194 #define HAS_DEBUG       0x08
 195
 196 /* BFD has symbols.  */
 197 #define HAS_SYMS        0x10
 198
 199 /* BFD has local symbols (basically used for F_LSYMS in a COFF
 200    header).  */
 201 #define HAS_LOCALS      0x20
 202
 203 /* BFD is a dynamic object.  */
 204 #define DYNAMIC         0x40
 205
 206 /* Text section is write protected (if D_PAGED is not set, this is
 207    like an a.out NMAGIC file) (the linker sets this by default, but
 208    clears it for -r or -N).  */
 209 #define WP_TEXT         0x80
 210
 211 /* BFD is dynamically paged (this is like an a.out ZMAGIC file) (the
 212    linker sets this by default, but clears it for -r or -n or -N).  */
 213 #define D_PAGED         0x100
 214
 215 /* BFD is relaxable (this means that bfd_relax_section may be able to
 216    do something).  */
 217 #define BFD_IS_RELAXABLE 0x200
 218 \f
 219 /* symbols and relocation */
 220
 221 typedef unsigned long symindex;
 222
 223 #define BFD_NO_MORE_SYMBOLS ((symindex) ~0)
 224
 225 typedef enum bfd_symclass {
 226               bfd_symclass_unknown = 0,
 227               bfd_symclass_fcommon, /* fortran common symbols */
 228               bfd_symclass_global, /* global symbol, what a surprise */
 229               bfd_symclass_debugger, /* some debugger symbol */
 230               bfd_symclass_undefined /* none known */
 231             } symclass;
 232
 233
 234 /* general purpose part of a symbol;
 235    target specific parts will be found in libcoff.h, liba.out.h etc */
 236
 237
 238 #define bfd_get_section(x) ((x)->section)
 239 #define bfd_get_output_section(x) ((x)->section->output_section)
 240 #define bfd_set_section(x,y) ((x)->section) = (y)
 241 #define bfd_asymbol_base(x) ((x)->section->vma)
 242 #define bfd_asymbol_value(x) (bfd_asymbol_base(x) + (x)->value)
 243 #define bfd_asymbol_name(x) ((x)->name)
 244 /*Perhaps future: #define bfd_asymbol_bfd(x) ((x)->section->owner)*/
 245 #define bfd_asymbol_bfd(x) ((x)->the_bfd)
 246 #define bfd_asymbol_flavour(x) (bfd_asymbol_bfd(x)->xvec->flavour)
 247
 248 /* This is a type pun with struct ranlib on purpose! */
 249 typedef struct carsym {
 250   char *name;
 251   file_ptr file_offset;         /* look here to find the file */
 252 } carsym;                       /* to make these you call a carsymogen */
 253
 254
 255 /* Used in generating armaps.  Perhaps just a forward definition would do? */
 256 struct orl {                    /* output ranlib */
 257   char **name;                  /* symbol name */
 258   file_ptr pos;                 /* bfd* or file position */
 259   int namidx;                   /* index into string table */
 260 };
 261
 262 \f
 263
 264 /* Linenumber stuff */
 265 typedef struct lineno_cache_entry {
 266   unsigned int line_number;     /* Linenumber from start of function*/
 267   union {
 268  struct symbol_cache_entry *sym;                /* Function name */
 269     unsigned long offset;       /* Offset into section */
 270   } u;
 271 } alent;
 272 \f
 273 /* object and core file sections */
 274
 275
 276 #define align_power(addr, align)        \
 277         ( ((addr) + ((1<<(align))-1)) & (-1 << (align)))
 278
 279 typedef struct sec *sec_ptr;
 280
 281 #define bfd_get_section_name(bfd, ptr) ((ptr)->name + 0)
 282 #define bfd_get_section_vma(bfd, ptr) ((ptr)->vma + 0)
 283 #define bfd_get_section_alignment(bfd, ptr) ((ptr)->alignment_power + 0)
 284 #define bfd_section_name(bfd, ptr) ((ptr)->name)
 285 #define bfd_section_size(bfd, ptr) (bfd_get_section_size_before_reloc(ptr))
 286 #define bfd_section_vma(bfd, ptr) ((ptr)->vma)
 287 #define bfd_section_alignment(bfd, ptr) ((ptr)->alignment_power)
 288 #define bfd_get_section_flags(bfd, ptr) ((ptr)->flags + 0)
 289 #define bfd_get_section_userdata(bfd, ptr) ((ptr)->userdata)
 290
 291 #define bfd_is_com_section(ptr) (((ptr)->flags & SEC_IS_COMMON) != 0)
 292
 293 #define bfd_set_section_vma(bfd, ptr, val) (((ptr)->vma = (ptr)->lma= (val)), ((ptr)->user_set_vma = true), true)
 294 #define bfd_set_section_alignment(bfd, ptr, val) (((ptr)->alignment_power = (val)),true)
 295 #define bfd_set_section_userdata(bfd, ptr, val) (((ptr)->userdata = (val)),true)
 296
 297 typedef struct stat stat_type;
 298 \f
 299 /* Error handling */
 300
 301 typedef enum bfd_error
 302 {
 303   no_error = 0,
 304   system_call_error,
 305   invalid_target,
 306   wrong_format,
 307   invalid_operation,
 308   no_memory,
 309   no_symbols,
 310   no_more_archived_files,
 311   malformed_archive,
 312   file_not_recognized,
 313   file_ambiguously_recognized,
 314   no_contents,
 315   nonrepresentable_section,
 316   no_debug_section,
 317   bad_value,
 318   file_truncated,
 319   invalid_error_code
 320 } bfd_ec;
 321
 322 extern bfd_ec bfd_error;
 323
 324 CONST char *bfd_errmsg PARAMS ((bfd_ec error_tag));
 325 void bfd_perror PARAMS ((CONST char *message));
 326 \f
 327
 328 typedef enum bfd_print_symbol
 329 {
 330   bfd_print_symbol_name,
 331   bfd_print_symbol_more,
 332   bfd_print_symbol_all
 333 } bfd_print_symbol_type;
 334
 335 \f
 336 /* Information about a symbol that nm needs.  */
 337
 338 typedef struct _symbol_info
 339 {
 340   symvalue value;
 341   char type;                   /*  */
 342   CONST char *name;            /* Symbol name.  */
 343   char stab_other;             /* Unused. */
 344   short stab_desc;             /* Info for N_TYPE.  */
 345   CONST char *stab_name;
 346 } symbol_info;
 347 \f
 348 /* Hash table routines.  There is no way to free up a hash table.  */
 349
 350 /* An element in the hash table.  Most uses will actually use a larger
 351    structure, and an instance of this will be the first field.  */
 352
 353 struct bfd_hash_entry
 354 {
 355   /* Next entry for this hash code.  */
 356   struct bfd_hash_entry *next;
 357   /* String being hashed.  */
 358   const char *string;
 359   /* Hash code.  This is the full hash code, not the index into the
 360      table.  */
 361   unsigned long hash;
 362 };
 363
 364 /* A hash table.  */
 365
 366 struct bfd_hash_table
 367 {
 368   /* The hash array.  */
 369   struct bfd_hash_entry **table;
 370   /* The number of slots in the hash table.  */
 371   unsigned int size;
 372   /* A function used to create new elements in the hash table.  The
 373      first entry is itself a pointer to an element.  When this
 374      function is first invoked, this pointer will be NULL.  However,
 375      having the pointer permits a hierarchy of method functions to be
 376      built each of which calls the function in the superclass.  Thus
 377      each function should be written to allocate a new block of memory
 378      only if the argument is NULL.  */
 379   struct bfd_hash_entry *(*newfunc) PARAMS ((struct bfd_hash_entry *,
 380                                              struct bfd_hash_table *,
 381                                              const char *));
 382   /* An obstack for this hash table.  */
 383   struct obstack memory;
 384 };
 385
 386 /* Initialize a hash table.  */
 387 extern boolean bfd_hash_table_init
 388   PARAMS ((struct bfd_hash_table *,
 389            struct bfd_hash_entry *(*) (struct bfd_hash_entry *,
 390                                        struct bfd_hash_table *,
 391                                        const char *)));
 392
 393 /* Initialize a hash table specifying a size.  */
 394 extern boolean bfd_hash_table_init_n
 395   PARAMS ((struct bfd_hash_table *,
 396            struct bfd_hash_entry *(*) (struct bfd_hash_entry *,
 397                                        struct bfd_hash_table *,
 398                                        const char *),
 399            unsigned int size));
 400
 401 /* Free up a hash table.  */
 402 extern void bfd_hash_table_free PARAMS ((struct bfd_hash_table *));
 403
 404 /* Look up a string in a hash table.  If CREATE is true, a new entry
 405    will be created for this string if one does not already exist.  The
 406    COPY argument must be true if this routine should copy the string
 407    into newly allocated memory when adding an entry.  */
 408 extern struct bfd_hash_entry *bfd_hash_lookup
 409   PARAMS ((struct bfd_hash_table *, const char *, boolean create,
 410            boolean copy));
 411
 412 /* Base method for creating a hash table entry.  */
 413 extern struct bfd_hash_entry *bfd_hash_newfunc
 414   PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *,
 415            const char *));
 416
 417 /* Grab some space for a hash table entry.  */
 418 extern PTR bfd_hash_allocate PARAMS ((struct bfd_hash_table *,
 419                                       unsigned int));
 420
 421 /* Traverse a hash table in a random order, calling a function on each
 422    element.  If the function returns false, the traversal stops.  The
 423    INFO argument is passed to the function.  */
 424 extern void bfd_hash_traverse PARAMS ((struct bfd_hash_table *,
 425                                        boolean (*) (struct bfd_hash_entry *,
 426                                                     PTR),
 427                                        PTR info));
 428 \f
 429 /* The code that implements targets can initialize a jump table with this
 430    macro.  It must name all its routines the same way (a prefix plus
 431    the standard routine suffix), or it must #define the routines that
 432    are not so named, before calling JUMP_TABLE in the initializer.  */
 433
 434 /* Semi-portable string concatenation in cpp.
 435    The CAT4 hack is to avoid a problem with some strict ANSI C preprocessors.
 436    The problem is, "32_" is not a valid preprocessing token, and we don't
 437    want extra underscores (e.g., "nlm_32_").  The XCAT2 macro will cause the
 438    inner CAT macros to be evaluated first, producing still-valid pp-tokens.
 439    Then the final concatenation can be done.  (Sigh.)  */
 440 #ifndef CAT
 441 #ifdef SABER
 442 #define CAT(a,b)        a##b
 443 #define CAT3(a,b,c)     a##b##c
 444 #define CAT4(a,b,c,d)   a##b##c##d
 445 #else
 446 #if defined(__STDC__) || defined(ALMOST_STDC)
 447 #define CAT(a,b) a##b
 448 #define CAT3(a,b,c) a##b##c
 449 #define XCAT2(a,b)      CAT(a,b)
 450 #define CAT4(a,b,c,d)   XCAT2(CAT(a,b),CAT(c,d))
 451 #else
 452 #define CAT(a,b) a/**/b
 453 #define CAT3(a,b,c) a/**/b/**/c
 454 #define CAT4(a,b,c,d)   a/**/b/**/c/**/d
 455 #endif
 456 #endif
 457 #endif
 458
 459 #define JUMP_TABLE(NAME)\
 460 CAT(NAME,_core_file_failing_command),\
 461 CAT(NAME,_core_file_failing_signal),\
 462 CAT(NAME,_core_file_matches_executable_p),\
 463 CAT(NAME,_slurp_armap),\
 464 CAT(NAME,_slurp_extended_name_table),\
 465 CAT(NAME,_truncate_arname),\
 466 CAT(NAME,_write_armap),\
 467 CAT(NAME,_close_and_cleanup),\
 468 CAT(NAME,_set_section_contents),\
 469 CAT(NAME,_get_section_contents),\
 470 CAT(NAME,_new_section_hook),\
 471 CAT(NAME,_get_symtab_upper_bound),\
 472 CAT(NAME,_get_symtab),\
 473 CAT(NAME,_get_reloc_upper_bound),\
 474 CAT(NAME,_canonicalize_reloc),\
 475 CAT(NAME,_make_empty_symbol),\
 476 CAT(NAME,_print_symbol),\
 477 CAT(NAME,_get_symbol_info),\
 478 CAT(NAME,_get_lineno),\
 479 CAT(NAME,_set_arch_mach),\
 480 CAT(NAME,_openr_next_archived_file),\
 481 CAT(NAME,_find_nearest_line),\
 482 CAT(NAME,_generic_stat_arch_elt),\
 483 CAT(NAME,_sizeof_headers),\
 484 CAT(NAME,_bfd_debug_info_start),\
 485 CAT(NAME,_bfd_debug_info_end),\
 486 CAT(NAME,_bfd_debug_info_accumulate),\
 487 CAT(NAME,_bfd_get_relocated_section_contents),\
 488 CAT(NAME,_bfd_relax_section),\
 489 CAT(NAME,_bfd_reloc_type_lookup),\
 490 CAT(NAME,_bfd_make_debug_symbol),\
 491 CAT(NAME,_bfd_link_hash_table_create),\
 492 CAT(NAME,_bfd_link_add_symbols),\
 493 CAT(NAME,_bfd_final_link)
 494
 495 #define COFF_SWAP_TABLE (PTR) &bfd_coff_std_swap_table
 496
 497 \f
 498 /* User program access to BFD facilities */
 499
 500 /* Cast from const char * to char * so that caller can assign to
 501    a char * without a warning.  */
 502 #define bfd_get_filename(abfd) ((char *) (abfd)->filename)
 503 #define bfd_get_cacheable(abfd) ((abfd)->cacheable)
 504 #define bfd_get_format(abfd) ((abfd)->format)
 505 #define bfd_get_target(abfd) ((abfd)->xvec->name)
 506 #define bfd_get_flavour(abfd) ((abfd)->xvec->flavour)
 507 #define bfd_get_file_flags(abfd) ((abfd)->flags)
 508 #define bfd_applicable_file_flags(abfd) ((abfd)->xvec->object_flags)
 509 #define bfd_applicable_section_flags(abfd) ((abfd)->xvec->section_flags)
 510 #define bfd_my_archive(abfd) ((abfd)->my_archive)
 511 #define bfd_has_map(abfd) ((abfd)->has_armap)
 512
 513 #define bfd_valid_reloc_types(abfd) ((abfd)->xvec->valid_reloc_types)
 514 #define bfd_usrdata(abfd) ((abfd)->usrdata)
 515
 516 #define bfd_get_start_address(abfd) ((abfd)->start_address)
 517 #define bfd_get_symcount(abfd) ((abfd)->symcount)
 518 #define bfd_get_outsymbols(abfd) ((abfd)->outsymbols)
 519 #define bfd_count_sections(abfd) ((abfd)->section_count)
 520
 521 #define bfd_get_symbol_leading_char(abfd) ((abfd)->xvec->symbol_leading_char)
 522
 523 #define bfd_set_cacheable(abfd,bool) (((abfd)->cacheable = (bool)), true)
 524
 525 /* Byte swapping routines.  */
 526
 527 bfd_vma         bfd_getb64         PARAMS ((const unsigned char *));
 528 bfd_vma         bfd_getl64         PARAMS ((const unsigned char *));
 529 bfd_signed_vma  bfd_getb_signed_64 PARAMS ((const unsigned char *));
 530 bfd_signed_vma  bfd_getl_signed_64 PARAMS ((const unsigned char *));
 531 bfd_vma         bfd_getb32         PARAMS ((const unsigned char *));
 532 bfd_vma         bfd_getl32         PARAMS ((const unsigned char *));
 533 bfd_signed_vma  bfd_getb_signed_32 PARAMS ((const unsigned char *));
 534 bfd_signed_vma  bfd_getl_signed_32 PARAMS ((const unsigned char *));
 535 bfd_vma         bfd_getb16         PARAMS ((const unsigned char *));
 536 bfd_vma         bfd_getl16         PARAMS ((const unsigned char *));
 537 bfd_signed_vma  bfd_getb_signed_16 PARAMS ((const unsigned char *));
 538 bfd_signed_vma  bfd_getl_signed_16 PARAMS ((const unsigned char *));
 539 void            bfd_putb64         PARAMS ((bfd_vma, unsigned char *));
 540 void            bfd_putl64         PARAMS ((bfd_vma, unsigned char *));
 541 void            bfd_putb32         PARAMS ((bfd_vma, unsigned char *));
 542 void            bfd_putl32         PARAMS ((bfd_vma, unsigned char *));
 543 void            bfd_putb16         PARAMS ((bfd_vma, unsigned char *));
 544 void            bfd_putl16         PARAMS ((bfd_vma, unsigned char *));
 545
 546 /* ECOFF linking routines.  */
 547 #if defined(__STDC__) || defined(ALMOST_STDC)
 548 struct ecoff_debug_info;
 549 struct ecoff_debug_swap;
 550 struct ecoff_extr;
 551 struct symbol_cache_entry;
 552 struct bfd_link_info;
 553 #endif
 554 extern PTR bfd_ecoff_debug_init
 555   PARAMS ((bfd *output_bfd, struct ecoff_debug_info *output_debug,
 556            const struct ecoff_debug_swap *output_swap,
 557            struct bfd_link_info *));
 558 extern void bfd_ecoff_debug_free
 559   PARAMS ((PTR handle, bfd *output_bfd, struct ecoff_debug_info *output_debug,
 560            const struct ecoff_debug_swap *output_swap,
 561            struct bfd_link_info *));
 562 extern boolean bfd_ecoff_debug_accumulate
 563   PARAMS ((PTR handle, bfd *output_bfd, struct ecoff_debug_info *output_debug,
 564            const struct ecoff_debug_swap *output_swap,
 565            bfd *input_bfd, struct ecoff_debug_info *input_debug,
 566            const struct ecoff_debug_swap *input_swap,
 567            struct bfd_link_info *));
 568 extern boolean bfd_ecoff_debug_accumulate_other
 569   PARAMS ((PTR handle, bfd *output_bfd, struct ecoff_debug_info *output_debug,
 570            const struct ecoff_debug_swap *output_swap, bfd *input_bfd,
 571            struct bfd_link_info *));
 572 extern boolean bfd_ecoff_debug_externals
 573   PARAMS ((bfd *abfd, struct ecoff_debug_info *debug,
 574            const struct ecoff_debug_swap *swap,
 575            boolean relocateable,
 576            boolean (*get_extr) (struct symbol_cache_entry *,
 577                                 struct ecoff_extr *),
 578            void (*set_index) (struct symbol_cache_entry *,
 579                               bfd_size_type)));
 580 extern boolean bfd_ecoff_debug_one_external
 581   PARAMS ((bfd *abfd, struct ecoff_debug_info *debug,
 582            const struct ecoff_debug_swap *swap,
 583            const char *name, struct ecoff_extr *esym));
 584 extern bfd_size_type bfd_ecoff_debug_size
 585   PARAMS ((bfd *abfd, struct ecoff_debug_info *debug,
 586            const struct ecoff_debug_swap *swap));
 587 extern boolean bfd_ecoff_write_debug
 588   PARAMS ((bfd *abfd, struct ecoff_debug_info *debug,
 589            const struct ecoff_debug_swap *swap, file_ptr where));
 590 extern boolean bfd_ecoff_write_accumulated_debug
 591   PARAMS ((PTR handle, bfd *abfd, struct ecoff_debug_info *debug,
 592            const struct ecoff_debug_swap *swap,
 593            struct bfd_link_info *info, file_ptr where));
 594
 595 /* And more from the source.  */
 596 void
 597 bfd_init PARAMS ((void));
 598
 599 bfd *
 600 bfd_openr PARAMS ((CONST char *filename, CONST char *target));
 601
 602 bfd *
 603 bfd_fdopenr PARAMS ((CONST char *filename, CONST char *target, int fd));
 604
 605 bfd *
 606 bfd_openw PARAMS ((CONST char *filename, CONST char *target));
 607
 608 boolean
 609 bfd_close PARAMS ((bfd *abfd));
 610
 611 boolean
 612 bfd_close_all_done PARAMS ((bfd *));
 613
 614 bfd_size_type
 615 bfd_alloc_size PARAMS ((bfd *abfd));
 616
 617 bfd *
 618 bfd_create PARAMS ((CONST char *filename, bfd *templ));
 619
 620
 621  /* Byte swapping macros for user section data.  */
 622
 623 #define bfd_put_8(abfd, val, ptr) \
 624                 (*((unsigned char *)(ptr)) = (unsigned char)(val))
 625 #define bfd_put_signed_8 \
 626                 bfd_put_8
 627 #define bfd_get_8(abfd, ptr) \
 628                 (*(unsigned char *)(ptr))
 629 #define bfd_get_signed_8(abfd, ptr) \
 630                 ((*(unsigned char *)(ptr) ^ 0x80) - 0x80)
 631
 632 #define bfd_put_16(abfd, val, ptr) \
 633                 BFD_SEND(abfd, bfd_putx16, ((val),(ptr)))
 634 #define bfd_put_signed_16 \
 635                  bfd_put_16
 636 #define bfd_get_16(abfd, ptr) \
 637                 BFD_SEND(abfd, bfd_getx16, (ptr))
 638 #define bfd_get_signed_16(abfd, ptr) \
 639                  BFD_SEND (abfd, bfd_getx_signed_16, (ptr))
 640
 641 #define bfd_put_32(abfd, val, ptr) \
 642                 BFD_SEND(abfd, bfd_putx32, ((val),(ptr)))
 643 #define bfd_put_signed_32 \
 644                  bfd_put_32
 645 #define bfd_get_32(abfd, ptr) \
 646                 BFD_SEND(abfd, bfd_getx32, (ptr))
 647 #define bfd_get_signed_32(abfd, ptr) \
 648                  BFD_SEND(abfd, bfd_getx_signed_32, (ptr))
 649
 650 #define bfd_put_64(abfd, val, ptr) \
 651                 BFD_SEND(abfd, bfd_putx64, ((val), (ptr)))
 652 #define bfd_put_signed_64 \
 653                  bfd_put_64
 654 #define bfd_get_64(abfd, ptr) \
 655                 BFD_SEND(abfd, bfd_getx64, (ptr))
 656 #define bfd_get_signed_64(abfd, ptr) \
 657                  BFD_SEND(abfd, bfd_getx_signed_64, (ptr))
 658
 659
 660  /* Byte swapping macros for file header data.  */
 661
 662 #define bfd_h_put_8(abfd, val, ptr) \
 663                 bfd_put_8 (abfd, val, ptr)
 664 #define bfd_h_put_signed_8(abfd, val, ptr) \
 665                 bfd_put_8 (abfd, val, ptr)
 666 #define bfd_h_get_8(abfd, ptr) \
 667                 bfd_get_8 (abfd, ptr)
 668 #define bfd_h_get_signed_8(abfd, ptr) \
 669                 bfd_get_signed_8 (abfd, ptr)
 670
 671 #define bfd_h_put_16(abfd, val, ptr) \
 672                 BFD_SEND(abfd, bfd_h_putx16,(val,ptr))
 673 #define bfd_h_put_signed_16 \
 674                  bfd_h_put_16
 675 #define bfd_h_get_16(abfd, ptr) \
 676                 BFD_SEND(abfd, bfd_h_getx16,(ptr))
 677 #define bfd_h_get_signed_16(abfd, ptr) \
 678                  BFD_SEND(abfd, bfd_h_getx_signed_16, (ptr))
 679
 680 #define bfd_h_put_32(abfd, val, ptr) \
 681                 BFD_SEND(abfd, bfd_h_putx32,(val,ptr))
 682 #define bfd_h_put_signed_32 \
 683                  bfd_h_put_32
 684 #define bfd_h_get_32(abfd, ptr) \
 685                 BFD_SEND(abfd, bfd_h_getx32,(ptr))
 686 #define bfd_h_get_signed_32(abfd, ptr) \
 687                  BFD_SEND(abfd, bfd_h_getx_signed_32, (ptr))
 688
 689 #define bfd_h_put_64(abfd, val, ptr) \
 690                 BFD_SEND(abfd, bfd_h_putx64,(val, ptr))
 691 #define bfd_h_put_signed_64 \
 692                  bfd_h_put_64
 693 #define bfd_h_get_64(abfd, ptr) \
 694                 BFD_SEND(abfd, bfd_h_getx64,(ptr))
 695 #define bfd_h_get_signed_64(abfd, ptr) \
 696                  BFD_SEND(abfd, bfd_h_getx_signed_64, (ptr))
 697
 698 typedef struct sec
 699 {
 700          /* The name of the section; the name isn't a copy, the pointer is
 701         the same as that passed to bfd_make_section. */
 702
 703     CONST char *name;
 704
 705          /* Which section is it; 0..nth.      */
 706
 707    int index;
 708
 709          /* The next section in the list belonging to the BFD, or NULL. */
 710
 711     struct sec *next;
 712
 713          /* The field flags contains attributes of the section. Some
 714            flags are read in from the object file, and some are
 715            synthesized from other information.  */
 716
 717     flagword flags;
 718
 719 #define SEC_NO_FLAGS   0x000
 720
 721          /* Tells the OS to allocate space for this section when loading.
 722            This is clear for a section containing debug information
 723            only. */
 724 #define SEC_ALLOC      0x001
 725
 726          /* Tells the OS to load the section from the file when loading.
 727            This is clear for a .bss section. */
 728 #define SEC_LOAD       0x002
 729
 730          /* The section contains data still to be relocated, so there is
 731            some relocation information too. */
 732 #define SEC_RELOC      0x004
 733
 734 #if 0    /* Obsolete ? */
 735 #define SEC_BALIGN     0x008
 736 #endif
 737
 738          /* A signal to the OS that the section contains read only
 739           data. */
 740 #define SEC_READONLY   0x010
 741
 742          /* The section contains code only. */
 743 #define SEC_CODE       0x020
 744
 745          /* The section contains data only. */
 746 #define SEC_DATA       0x040
 747
 748          /* The section will reside in ROM. */
 749 #define SEC_ROM        0x080
 750
 751          /* The section contains constructor information. This section
 752            type is used by the linker to create lists of constructors and
 753            destructors used by <<g++>>. When a back end sees a symbol
 754            which should be used in a constructor list, it creates a new
 755            section for the type of name (e.g., <<__CTOR_LIST__>>), attaches
 756            the symbol to it, and builds a relocation. To build the lists
 757            of constructors, all the linker has to do is catenate all the
 758            sections called <<__CTOR_LIST__>> and relocate the data
 759            contained within - exactly the operations it would peform on
 760            standard data. */
 761 #define SEC_CONSTRUCTOR 0x100
 762
 763          /* The section is a constuctor, and should be placed at the
 764           end of the text, data, or bss section(?). */
 765 #define SEC_CONSTRUCTOR_TEXT 0x1100
 766 #define SEC_CONSTRUCTOR_DATA 0x2100
 767 #define SEC_CONSTRUCTOR_BSS  0x3100
 768
 769          /* The section has contents - a data section could be
 770            <<SEC_ALLOC>> | <<SEC_HAS_CONTENTS>>; a debug section could be
 771            <<SEC_HAS_CONTENTS>> */
 772 #define SEC_HAS_CONTENTS 0x200
 773
 774          /* An instruction to the linker to not output the section
 775           even if it has information which would normally be written. */
 776 #define SEC_NEVER_LOAD 0x400
 777
 778          /* The section is a shared library section.  The linker must leave
 779            these completely alone, as the vma and size are used when
 780            the executable is loaded. */
 781 #define SEC_SHARED_LIBRARY 0x800
 782
 783          /* The section is a common section (symbols may be defined
 784            multiple times, the value of a symbol is the amount of
 785            space it requires, and the largest symbol value is the one
 786            used).  Most targets have exactly one of these (which we
 787             translate to bfd_com_section), but ECOFF has two. */
 788 #define SEC_IS_COMMON 0x8000
 789
 790          /* The section contains only debugging information.  For
 791            example, this is set for ELF .debug and .stab sections.
 792            strip tests this flag to see if a section can be
 793            discarded. */
 794 #define SEC_DEBUGGING 0x10000
 795
 796          /*  End of section flags.  */
 797
 798         /*  The virtual memory address of the section - where it will be
 799            at run time.  The symbols are relocated against this.  The
 800             user_set_vma flag is maintained by bfd; if it's not set, the
 801             backend can assign addresses (for example, in <<a.out>>, where
 802             the default address for <<.data>> is dependent on the specific
 803             target and various flags).  */
 804
 805    bfd_vma vma;
 806    boolean user_set_vma;
 807
 808         /*  The load address of the section - where it would be in a
 809            rom image; really only used for writing section header
 810             information. */
 811
 812    bfd_vma lma;
 813
 814          /* The size of the section in bytes, as it will be output.
 815            contains a value even if the section has no contents (e.g., the
 816            size of <<.bss>>). This will be filled in after relocation */
 817
 818    bfd_size_type _cooked_size;
 819
 820          /* The original size on disk of the section, in bytes.  Normally this
 821             value is the same as the size, but if some relaxing has
 822             been done, then this value will be bigger.  */
 823
 824    bfd_size_type _raw_size;
 825
 826          /* If this section is going to be output, then this value is the
 827            offset into the output section of the first byte in the input
 828            section. E.g., if this was going to start at the 100th byte in
 829            the output section, this value would be 100. */
 830
 831    bfd_vma output_offset;
 832
 833          /* The output section through which to map on output. */
 834
 835    struct sec *output_section;
 836
 837          /* The alignment requirement of the section, as an exponent of 2 -
 838            e.g., 3 aligns to 2^3 (or 8). */
 839
 840    unsigned int alignment_power;
 841
 842          /* If an input section, a pointer to a vector of relocation
 843            records for the data in this section. */
 844
 845    struct reloc_cache_entry *relocation;
 846
 847          /* If an output section, a pointer to a vector of pointers to
 848            relocation records for the data in this section. */
 849
 850    struct reloc_cache_entry **orelocation;
 851
 852          /* The number of relocation records in one of the above  */
 853
 854    unsigned reloc_count;
 855
 856          /* Information below is back end specific - and not always used
 857            or updated.  */
 858
 859          /* File position of section data    */
 860
 861    file_ptr filepos;
 862
 863          /* File position of relocation info */
 864
 865    file_ptr rel_filepos;
 866
 867          /* File position of line data       */
 868
 869    file_ptr line_filepos;
 870
 871          /* Pointer to data for applications */
 872
 873    PTR userdata;
 874
 875    struct lang_output_section *otheruserdata;
 876
 877          /* Attached line number information */
 878
 879    alent *lineno;
 880
 881          /* Number of line number records   */
 882
 883    unsigned int lineno_count;
 884
 885          /* When a section is being output, this value changes as more
 886            linenumbers are written out */
 887
 888    file_ptr moving_line_filepos;
 889
 890          /* What the section number is in the target world  */
 891
 892    int target_index;
 893
 894    PTR used_by_bfd;
 895
 896          /* If this is a constructor section then here is a list of the
 897            relocations created to relocate items within it. */
 898
 899    struct relent_chain *constructor_chain;
 900
 901          /* The BFD which owns the section. */
 902
 903    bfd *owner;
 904
 905    boolean reloc_done;
 906           /* A symbol which points at this section only */
 907    struct symbol_cache_entry *symbol;
 908    struct symbol_cache_entry **symbol_ptr_ptr;
 909
 910    struct bfd_link_order *link_order_head;
 911    struct bfd_link_order *link_order_tail;
 912 } asection ;
 913
 914
 915      /* These sections are global, and are managed by BFD.  The application
 916        and target back end are not permitted to change the values in
 917         these sections.  */
 918 #define BFD_ABS_SECTION_NAME "*ABS*"
 919 #define BFD_UND_SECTION_NAME "*UND*"
 920 #define BFD_COM_SECTION_NAME "*COM*"
 921 #define BFD_IND_SECTION_NAME "*IND*"
 922
 923      /* the absolute section */
 924 extern asection bfd_abs_section;
 925      /* Pointer to the undefined section */
 926 extern asection bfd_und_section;
 927      /* Pointer to the common section */
 928 extern asection bfd_com_section;
 929      /* Pointer to the indirect section */
 930 extern asection bfd_ind_section;
 931
 932 extern struct symbol_cache_entry *bfd_abs_symbol;
 933 extern struct symbol_cache_entry *bfd_com_symbol;
 934 extern struct symbol_cache_entry *bfd_und_symbol;
 935 extern struct symbol_cache_entry *bfd_ind_symbol;
 936 #define bfd_get_section_size_before_reloc(section) \
 937      (section->reloc_done ? (abort(),1): (section)->_raw_size)
 938 #define bfd_get_section_size_after_reloc(section) \
 939      ((section->reloc_done) ? (section)->_cooked_size: (abort(),1))
 940 asection *
 941 bfd_get_section_by_name PARAMS ((bfd *abfd, CONST char *name));
 942
 943 asection *
 944 bfd_make_section_old_way PARAMS ((bfd *abfd, CONST char *name));
 945
 946 asection *
 947 bfd_make_section_anyway PARAMS ((bfd *abfd, CONST char *name));
 948
 949 asection *
 950 bfd_make_section PARAMS ((bfd *, CONST char *name));
 951
 952 boolean
 953 bfd_set_section_flags PARAMS ((bfd *abfd, asection *sec, flagword flags));
 954
 955 void
 956 bfd_map_over_sections PARAMS ((bfd *abfd,
 957     void (*func)(bfd *abfd,
 958     asection *sect,
 959     PTR obj),
 960     PTR obj));
 961
 962 boolean
 963 bfd_set_section_size PARAMS ((bfd *abfd, asection *sec, bfd_size_type val));
 964
 965 boolean
 966 bfd_set_section_contents
 967  PARAMS ((bfd *abfd,
 968     asection *section,
 969     PTR data,
 970     file_ptr offset,
 971     bfd_size_type count));
 972
 973 boolean
 974 bfd_get_section_contents
 975  PARAMS ((bfd *abfd, asection *section, PTR location,
 976     file_ptr offset, bfd_size_type count));
 977
 978 enum bfd_architecture
 979 {
 980   bfd_arch_unknown,    /* File arch not known */
 981   bfd_arch_obscure,    /* Arch known, not one of these */
 982   bfd_arch_m68k,       /* Motorola 68xxx */
 983   bfd_arch_vax,        /* DEC Vax */
 984   bfd_arch_i960,       /* Intel 960 */
 985      /* The order of the following is important.
 986        lower number indicates a machine type that
 987        only accepts a subset of the instructions
 988        available to machines with higher numbers.
 989        The exception is the "ca", which is
 990        incompatible with all other machines except
 991        "core". */
 992
 993 #define bfd_mach_i960_core      1
 994 #define bfd_mach_i960_ka_sa     2
 995 #define bfd_mach_i960_kb_sb     3
 996 #define bfd_mach_i960_mc        4
 997 #define bfd_mach_i960_xa        5
 998 #define bfd_mach_i960_ca        6
 999
1000   bfd_arch_a29k,       /* AMD 29000 */
1001   bfd_arch_sparc,      /* SPARC */
1002   bfd_arch_mips,       /* MIPS Rxxxx */
1003   bfd_arch_i386,       /* Intel 386 */
1004   bfd_arch_we32k,      /* AT&T WE32xxx */
1005   bfd_arch_tahoe,      /* CCI/Harris Tahoe */
1006   bfd_arch_i860,       /* Intel 860 */
1007   bfd_arch_romp,       /* IBM ROMP PC/RT */
1008   bfd_arch_alliant,    /* Alliant */
1009   bfd_arch_convex,     /* Convex */
1010   bfd_arch_m88k,       /* Motorola 88xxx */
1011   bfd_arch_pyramid,    /* Pyramid Technology */
1012   bfd_arch_h8300,      /* Hitachi H8/300 */
1013 #define bfd_mach_h8300   1
1014 #define bfd_mach_h8300h  2
1015   bfd_arch_rs6000,     /* IBM RS/6000 */
1016   bfd_arch_hppa,       /* HP PA RISC */
1017   bfd_arch_z8k,        /* Zilog Z8000 */
1018 #define bfd_mach_z8001          1
1019 #define bfd_mach_z8002          2
1020   bfd_arch_h8500,      /* Hitachi H8/500 */
1021   bfd_arch_sh,         /* Hitachi SH */
1022   bfd_arch_alpha,      /* Dec Alpha */
1023   bfd_arch_last
1024   };
1025
1026 typedef struct bfd_arch_info
1027 {
1028   int bits_per_word;
1029   int bits_per_address;
1030   int bits_per_byte;
1031   enum bfd_architecture arch;
1032   long mach;
1033   char *arch_name;
1034   CONST  char *printable_name;
1035   unsigned int section_align_power;
1036   /* true if this is the default machine for the architecture */
1037   boolean the_default;
1038   CONST struct bfd_arch_info * (*compatible)
1039         PARAMS ((CONST struct bfd_arch_info *a,
1040                  CONST struct bfd_arch_info *b));
1041
1042   boolean (*scan) PARAMS ((CONST struct bfd_arch_info *, CONST char *));
1043    /* How to disassemble an instruction, producing a printable
1044      representation on a specified stdio stream.  This isn't
1045      defined for most processors at present, because of the size
1046      of the additional tables it would drag in, and because gdb
1047      wants to use a different interface.  */
1048   unsigned int (*disassemble) PARAMS ((bfd_vma addr, CONST char *data,
1049                                         PTR stream));
1050
1051   struct bfd_arch_info *next;
1052 } bfd_arch_info_type;
1053 CONST char *
1054 bfd_printable_name PARAMS ((bfd *abfd));
1055
1056 bfd_arch_info_type *
1057 bfd_scan_arch PARAMS ((CONST char *string));
1058
1059 CONST bfd_arch_info_type *
1060 bfd_arch_get_compatible PARAMS ((
1061     CONST bfd *abfd,
1062     CONST bfd *bbfd));
1063
1064 void
1065 bfd_set_arch_info PARAMS ((bfd *abfd, bfd_arch_info_type *arg));
1066
1067 enum bfd_architecture
1068 bfd_get_arch PARAMS ((bfd *abfd));
1069
1070 unsigned long
1071 bfd_get_mach PARAMS ((bfd *abfd));
1072
1073 unsigned int
1074 bfd_arch_bits_per_byte PARAMS ((bfd *abfd));
1075
1076 unsigned int
1077 bfd_arch_bits_per_address PARAMS ((bfd *abfd));
1078
1079 bfd_arch_info_type *
1080 bfd_get_arch_info PARAMS ((bfd *abfd));
1081
1082 bfd_arch_info_type *
1083 bfd_lookup_arch
1084  PARAMS ((enum bfd_architecture
1085     arch,
1086     long machine));
1087
1088 CONST char *
1089 bfd_printable_arch_mach
1090  PARAMS ((enum bfd_architecture arch, unsigned long machine));
1091
1092 typedef enum bfd_reloc_status
1093 {
1094         /* No errors detected */
1095   bfd_reloc_ok,
1096
1097         /* The relocation was performed, but there was an overflow. */
1098   bfd_reloc_overflow,
1099
1100         /* The address to relocate was not within the section supplied. */
1101   bfd_reloc_outofrange,
1102
1103         /* Used by special functions */
1104   bfd_reloc_continue,
1105
1106         /* Unsupported relocation size requested. */
1107   bfd_reloc_notsupported,
1108
1109         /* Unused */
1110   bfd_reloc_other,
1111
1112         /* The symbol to relocate against was undefined. */
1113   bfd_reloc_undefined,
1114
1115         /* The relocation was performed, but may not be ok - presently
1116           generated only when linking i960 coff files with i960 b.out
1117           symbols.  If this type is returned, the error_message argument
1118           to bfd_perform_relocation will be set.  */
1119   bfd_reloc_dangerous
1120  }
1121  bfd_reloc_status_type;
1122
1123
1124 typedef struct reloc_cache_entry
1125 {
1126         /* A pointer into the canonical table of pointers  */
1127   struct symbol_cache_entry **sym_ptr_ptr;
1128
1129         /* offset in section */
1130   bfd_size_type address;
1131
1132         /* addend for relocation value */
1133   bfd_vma addend;
1134
1135         /* Pointer to how to perform the required relocation */
1136   const struct reloc_howto_struct *howto;
1137
1138 } arelent;
1139 enum complain_overflow
1140 {
1141          /* Do not complain on overflow. */
1142   complain_overflow_dont,
1143
1144          /* Complain if the bitfield overflows, whether it is considered
1145            as signed or unsigned. */
1146   complain_overflow_bitfield,
1147
1148          /* Complain if the value overflows when considered as signed
1149            number. */
1150   complain_overflow_signed,
1151
1152          /* Complain if the value overflows when considered as an
1153            unsigned number. */
1154   complain_overflow_unsigned
1155 };
1156
1157 typedef struct reloc_howto_struct
1158 {
1159         /*  The type field has mainly a documetary use - the back end can
1160            do what it wants with it, though normally the back end's
1161            external idea of what a reloc number is stored
1162            in this field. For example, a PC relative word relocation
1163            in a coff environment has the type 023 - because that's
1164            what the outside world calls a R_PCRWORD reloc. */
1165   unsigned int type;
1166
1167         /*  The value the final relocation is shifted right by. This drops
1168            unwanted data from the relocation.  */
1169   unsigned int rightshift;
1170
1171          /*  The size of the item to be relocated.  This is *not* a
1172             power-of-two measure.  To get the number of bytes operated
1173             on by a type of relocation, use bfd_get_reloc_size.  */
1174   int size;
1175
1176         /*  The number of bits in the item to be relocated.  This is used
1177             when doing overflow checking.  */
1178   unsigned int bitsize;
1179
1180         /*  Notes that the relocation is relative to the location in the
1181            data section of the addend. The relocation function will
1182            subtract from the relocation value the address of the location
1183            being relocated. */
1184   boolean pc_relative;
1185
1186          /*  The bit position of the reloc value in the destination.
1187             The relocated value is left shifted by this amount. */
1188   unsigned int bitpos;
1189
1190          /* What type of overflow error should be checked for when
1191            relocating. */
1192   enum complain_overflow complain_on_overflow;
1193
1194         /* If this field is non null, then the supplied function is
1195           called rather than the normal function. This allows really
1196           strange relocation methods to be accomodated (e.g., i960 callj
1197           instructions). */
1198   bfd_reloc_status_type (*special_function)
1199                                     PARAMS ((bfd *abfd,
1200                                              arelent *reloc_entry,
1201                                             struct symbol_cache_entry *symbol,
1202                                             PTR data,
1203                                             asection *input_section,
1204                                             bfd *output_bfd,
1205                                             char **error_message));
1206
1207         /* The textual name of the relocation type. */
1208   char *name;
1209
1210         /* When performing a partial link, some formats must modify the
1211           relocations rather than the data - this flag signals this.*/
1212   boolean partial_inplace;
1213
1214         /* The src_mask selects which parts of the read in data
1215           are to be used in the relocation sum.  E.g., if this was an 8 bit
1216           bit of data which we read and relocated, this would be
1217           0x000000ff. When we have relocs which have an addend, such as
1218           sun4 extended relocs, the value in the offset part of a
1219           relocating field is garbage so we never use it. In this case
1220           the mask would be 0x00000000. */
1221   bfd_vma src_mask;
1222
1223         /* The dst_mask selects which parts of the instruction are replaced
1224           into the instruction. In most cases src_mask == dst_mask,
1225           except in the above special case, where dst_mask would be
1226           0x000000ff, and src_mask would be 0x00000000.   */
1227   bfd_vma dst_mask;
1228
1229         /* When some formats create PC relative instructions, they leave
1230           the value of the pc of the place being relocated in the offset
1231           slot of the instruction, so that a PC relative relocation can
1232           be made just by adding in an ordinary offset (e.g., sun3 a.out).
1233           Some formats leave the displacement part of an instruction
1234           empty (e.g., m88k bcs); this flag signals the fact.*/
1235   boolean pcrel_offset;
1236
1237 } reloc_howto_type;
1238 #define HOWTO(C, R,S,B, P, BI, O, SF, NAME, INPLACE, MASKSRC, MASKDST, PC) \
1239   {(unsigned)C,R,S,B, P, BI, O,SF,NAME,INPLACE,MASKSRC,MASKDST,PC}
1240 #define NEWHOWTO( FUNCTION, NAME,SIZE,REL,IN) HOWTO(0,0,SIZE,0,REL,0,complain_overflow_dont,FUNCTION, NAME,false,0,0,IN)
1241
1242 #define HOWTO_PREPARE(relocation, symbol)      \
1243   {                                            \
1244   if (symbol != (asymbol *)NULL) {             \
1245     if (bfd_is_com_section (symbol->section)) { \
1246       relocation = 0;                          \
1247     }                                          \
1248     else {                                     \
1249       relocation = symbol->value;              \
1250     }                                          \
1251   }                                            \
1252 }
1253 int
1254 bfd_get_reloc_size  PARAMS ((const reloc_howto_type *));
1255
1256 typedef unsigned char bfd_byte;
1257
1258 typedef struct relent_chain {
1259   arelent relent;
1260   struct   relent_chain *next;
1261 } arelent_chain;
1262 bfd_reloc_status_type
1263
1264 bfd_perform_relocation
1265  PARAMS ((bfd *abfd,
1266     arelent *reloc_entry,
1267     PTR data,
1268     asection *input_section,
1269     bfd *output_bfd,
1270     char **error_message));
1271
1272 typedef enum bfd_reloc_code_real
1273 {
1274    /* Basic absolute relocations */
1275   BFD_RELOC_64,
1276   BFD_RELOC_32,
1277   BFD_RELOC_16,
1278   BFD_RELOC_14,
1279   BFD_RELOC_8,
1280
1281    /* PC-relative relocations */
1282   BFD_RELOC_64_PCREL,
1283   BFD_RELOC_32_PCREL,
1284   BFD_RELOC_24_PCREL,     /* used by i960 */
1285   BFD_RELOC_16_PCREL,
1286   BFD_RELOC_8_PCREL,
1287
1288    /* Linkage-table relative */
1289   BFD_RELOC_32_BASEREL,
1290   BFD_RELOC_16_BASEREL,
1291   BFD_RELOC_8_BASEREL,
1292
1293    /* The type of reloc used to build a contructor table - at the moment
1294      probably a 32 bit wide abs address, but the cpu can choose. */
1295   BFD_RELOC_CTOR,
1296
1297    /* 8 bits wide, but used to form an address like 0xffnn */
1298   BFD_RELOC_8_FFnn,
1299
1300    /* 32-bit pc-relative, shifted right 2 bits (i.e., 30-bit
1301      word displacement, e.g. for SPARC) */
1302   BFD_RELOC_32_PCREL_S2,
1303    /* signed 16-bit pc-relative, shifted right 2 bits (e.g. for MIPS) */
1304   BFD_RELOC_16_PCREL_S2,
1305    /* this is used on the Alpha */
1306   BFD_RELOC_23_PCREL_S2,
1307
1308    /* High 22 bits of 32-bit value, placed into lower 22 bits of
1309      target word; simple reloc.  */
1310   BFD_RELOC_HI22,
1311    /* Low 10 bits.  */
1312   BFD_RELOC_LO10,
1313
1314    /* For systems that allocate a Global Pointer register, these are
1315      displacements off that register.  These relocation types are
1316      handled specially, because the value the register will have is
1317      decided relatively late.  */
1318   BFD_RELOC_GPREL16,
1319   BFD_RELOC_GPREL32,
1320
1321    /* Reloc types used for i960/b.out.  */
1322   BFD_RELOC_I960_CALLJ,
1323
1324    /* now for the sparc/elf codes */
1325   BFD_RELOC_NONE,                /* actually used */
1326   BFD_RELOC_SPARC_WDISP22,
1327   BFD_RELOC_SPARC22,
1328   BFD_RELOC_SPARC13,
1329   BFD_RELOC_SPARC_GOT10,
1330   BFD_RELOC_SPARC_GOT13,
1331   BFD_RELOC_SPARC_GOT22,
1332   BFD_RELOC_SPARC_PC10,
1333   BFD_RELOC_SPARC_PC22,
1334   BFD_RELOC_SPARC_WPLT30,
1335   BFD_RELOC_SPARC_COPY,
1336   BFD_RELOC_SPARC_GLOB_DAT,
1337   BFD_RELOC_SPARC_JMP_SLOT,
1338   BFD_RELOC_SPARC_RELATIVE,
1339   BFD_RELOC_SPARC_UA32,
1340
1341    /* these are a.out specific? */
1342   BFD_RELOC_SPARC_BASE13,
1343   BFD_RELOC_SPARC_BASE22,
1344
1345    /* start-sanitize-v9 */
1346   BFD_RELOC_SPARC_10,
1347   BFD_RELOC_SPARC_11,
1348 #define  BFD_RELOC_SPARC_64 BFD_RELOC_64
1349   BFD_RELOC_SPARC_OLO10,
1350   BFD_RELOC_SPARC_HH22,
1351   BFD_RELOC_SPARC_HM10,
1352   BFD_RELOC_SPARC_LM22,
1353   BFD_RELOC_SPARC_PC_HH22,
1354   BFD_RELOC_SPARC_PC_HM10,
1355   BFD_RELOC_SPARC_PC_LM22,
1356   BFD_RELOC_SPARC_WDISP16,
1357   BFD_RELOC_SPARC_WDISP19,
1358   BFD_RELOC_SPARC_GLOB_JMP,
1359   BFD_RELOC_SPARC_LO7,
1360    /* end-sanitize-v9 */
1361
1362    /* Alpha ECOFF relocations.  Some of these treat the symbol or "addend"
1363      in some special way.  */
1364    /* For GPDISP_HI16 ("gpdisp") relocations, the symbol is ignored when
1365      writing; when reading, it will be the absolute section symbol.  The
1366      addend is the displacement in bytes of the "lda" instruction from
1367      the "ldah" instruction (which is at the address of this reloc).  */
1368   BFD_RELOC_ALPHA_GPDISP_HI16,
1369    /* For GPDISP_LO16 ("ignore") relocations, the symbol is handled as
1370      with GPDISP_HI16 relocs.  The addend is ignored when writing the
1371      relocations out, and is filled in with the file's GP value on
1372      reading, for convenience.  */
1373   BFD_RELOC_ALPHA_GPDISP_LO16,
1374
1375    /* The Alpha LITERAL/LITUSE relocs are produced by a symbol reference;
1376      the assembler turns it into a LDQ instruction to load the address of
1377      the symbol, and then fills in a register in the real instruction.
1378
1379      The LITERAL reloc, at the LDQ instruction, refers to the .lita
1380      section symbol.  The addend is ignored when writing, but is filled
1381      in with the file's GP value on reading, for convenience, as with the
1382      GPDISP_LO16 reloc.
1383
1384      The LITUSE reloc, on the instruction using the loaded address, gives
1385      information to the linker that it might be able to use to optimize
1386      away some literal section references.  The symbol is ignored (read
1387      as the absolute section symbol), and the "addend" indicates the type
1388      of instruction using the register:
1389               1 - "memory" fmt insn
1390               2 - byte-manipulation (byte offset reg)
1391               3 - jsr (target of branch)
1392
1393      The GNU linker currently doesn't do any of this optimizing.  */
1394   BFD_RELOC_ALPHA_LITERAL,
1395   BFD_RELOC_ALPHA_LITUSE,
1396
1397    /* The HINT relocation indicates a value that should be filled into the
1398      "hint" field of a jmp/jsr/ret instruction, for possible branch-
1399      prediction logic which may be provided on some processors.  */
1400   BFD_RELOC_ALPHA_HINT,
1401
1402    /* Bits 27..2 of the relocation address shifted right 2 bits;
1403      simple reloc otherwise.  */
1404   BFD_RELOC_MIPS_JMP,
1405
1406    /* High 16 bits of 32-bit value; simple reloc.  */
1407   BFD_RELOC_HI16,
1408    /* High 16 bits of 32-bit value but the low 16 bits will be sign
1409      extended and added to form the final result.  If the low 16
1410      bits form a negative number, we need to add one to the high value
1411      to compensate for the borrow when the low bits are added.  */
1412   BFD_RELOC_HI16_S,
1413    /* Low 16 bits.  */
1414   BFD_RELOC_LO16,
1415
1416    /* relocation relative to the global pointer.  */
1417 #define BFD_RELOC_MIPS_GPREL BFD_RELOC_GPREL16
1418
1419    /* Relocation against a MIPS literal section.  */
1420   BFD_RELOC_MIPS_LITERAL,
1421
1422    /* MIPS ELF relocations.  */
1423   BFD_RELOC_MIPS_GOT16,
1424   BFD_RELOC_MIPS_CALL16,
1425 #define BFD_RELOC_MIPS_GPREL32 BFD_RELOC_GPREL32
1426
1427    /* These are, so far, specific to HPPA processors.  I'm not sure that some
1428      don't duplicate other reloc types, such as BFD_RELOC_32 and _32_PCREL.
1429      Also, many more were in the list I got that don't fit in well in the
1430      model BFD uses, so I've omitted them for now.  If we do make this reloc
1431      type get used for code that really does implement the funky reloc types,
1432      they'll have to be added to this list.  */
1433   BFD_RELOC_HPPA_32,
1434   BFD_RELOC_HPPA_11,
1435   BFD_RELOC_HPPA_14,
1436   BFD_RELOC_HPPA_17,
1437
1438   BFD_RELOC_HPPA_L21,
1439   BFD_RELOC_HPPA_R11,
1440   BFD_RELOC_HPPA_R14,
1441   BFD_RELOC_HPPA_R17,
1442   BFD_RELOC_HPPA_LS21,
1443   BFD_RELOC_HPPA_RS11,
1444   BFD_RELOC_HPPA_RS14,
1445   BFD_RELOC_HPPA_RS17,
1446   BFD_RELOC_HPPA_LD21,
1447   BFD_RELOC_HPPA_RD11,
1448   BFD_RELOC_HPPA_RD14,
1449   BFD_RELOC_HPPA_RD17,
1450   BFD_RELOC_HPPA_LR21,
1451   BFD_RELOC_HPPA_RR14,
1452   BFD_RELOC_HPPA_RR17,
1453
1454   BFD_RELOC_HPPA_GOTOFF_11,
1455   BFD_RELOC_HPPA_GOTOFF_14,
1456   BFD_RELOC_HPPA_GOTOFF_L21,
1457   BFD_RELOC_HPPA_GOTOFF_R11,
1458   BFD_RELOC_HPPA_GOTOFF_R14,
1459   BFD_RELOC_HPPA_GOTOFF_LS21,
1460   BFD_RELOC_HPPA_GOTOFF_RS11,
1461   BFD_RELOC_HPPA_GOTOFF_RS14,
1462   BFD_RELOC_HPPA_GOTOFF_LD21,
1463   BFD_RELOC_HPPA_GOTOFF_RD11,
1464   BFD_RELOC_HPPA_GOTOFF_RD14,
1465   BFD_RELOC_HPPA_GOTOFF_LR21,
1466   BFD_RELOC_HPPA_GOTOFF_RR14,
1467
1468   BFD_RELOC_HPPA_DLT_32,
1469   BFD_RELOC_HPPA_DLT_11,
1470   BFD_RELOC_HPPA_DLT_14,
1471   BFD_RELOC_HPPA_DLT_L21,
1472   BFD_RELOC_HPPA_DLT_R11,
1473   BFD_RELOC_HPPA_DLT_R14,
1474
1475   BFD_RELOC_HPPA_ABS_CALL_11,
1476   BFD_RELOC_HPPA_ABS_CALL_14,
1477   BFD_RELOC_HPPA_ABS_CALL_17,
1478   BFD_RELOC_HPPA_ABS_CALL_L21,
1479   BFD_RELOC_HPPA_ABS_CALL_R11,
1480   BFD_RELOC_HPPA_ABS_CALL_R14,
1481   BFD_RELOC_HPPA_ABS_CALL_R17,
1482   BFD_RELOC_HPPA_ABS_CALL_LS21,
1483   BFD_RELOC_HPPA_ABS_CALL_RS11,
1484   BFD_RELOC_HPPA_ABS_CALL_RS14,
1485   BFD_RELOC_HPPA_ABS_CALL_RS17,
1486   BFD_RELOC_HPPA_ABS_CALL_LD21,
1487   BFD_RELOC_HPPA_ABS_CALL_RD11,
1488   BFD_RELOC_HPPA_ABS_CALL_RD14,
1489   BFD_RELOC_HPPA_ABS_CALL_RD17,
1490   BFD_RELOC_HPPA_ABS_CALL_LR21,
1491   BFD_RELOC_HPPA_ABS_CALL_RR14,
1492   BFD_RELOC_HPPA_ABS_CALL_RR17,
1493
1494   BFD_RELOC_HPPA_PCREL_CALL_11,
1495   BFD_RELOC_HPPA_PCREL_CALL_12,
1496   BFD_RELOC_HPPA_PCREL_CALL_14,
1497   BFD_RELOC_HPPA_PCREL_CALL_17,
1498   BFD_RELOC_HPPA_PCREL_CALL_L21,
1499   BFD_RELOC_HPPA_PCREL_CALL_R11,
1500   BFD_RELOC_HPPA_PCREL_CALL_R14,
1501   BFD_RELOC_HPPA_PCREL_CALL_R17,
1502   BFD_RELOC_HPPA_PCREL_CALL_LS21,
1503   BFD_RELOC_HPPA_PCREL_CALL_RS11,
1504   BFD_RELOC_HPPA_PCREL_CALL_RS14,
1505   BFD_RELOC_HPPA_PCREL_CALL_RS17,
1506   BFD_RELOC_HPPA_PCREL_CALL_LD21,
1507   BFD_RELOC_HPPA_PCREL_CALL_RD11,
1508   BFD_RELOC_HPPA_PCREL_CALL_RD14,
1509   BFD_RELOC_HPPA_PCREL_CALL_RD17,
1510   BFD_RELOC_HPPA_PCREL_CALL_LR21,
1511   BFD_RELOC_HPPA_PCREL_CALL_RR14,
1512   BFD_RELOC_HPPA_PCREL_CALL_RR17,
1513
1514   BFD_RELOC_HPPA_PLABEL_32,
1515   BFD_RELOC_HPPA_PLABEL_11,
1516   BFD_RELOC_HPPA_PLABEL_14,
1517   BFD_RELOC_HPPA_PLABEL_L21,
1518   BFD_RELOC_HPPA_PLABEL_R11,
1519   BFD_RELOC_HPPA_PLABEL_R14,
1520
1521   BFD_RELOC_HPPA_UNWIND_ENTRY,
1522   BFD_RELOC_HPPA_UNWIND_ENTRIES,
1523
1524    /* i386/elf relocations */
1525   BFD_RELOC_386_GOT32,
1526   BFD_RELOC_386_PLT32,
1527   BFD_RELOC_386_COPY,
1528   BFD_RELOC_386_GLOB_DAT,
1529   BFD_RELOC_386_JUMP_SLOT,
1530   BFD_RELOC_386_RELATIVE,
1531   BFD_RELOC_386_GOTOFF,
1532   BFD_RELOC_386_GOTPC,
1533
1534    /* this must be the highest numeric value */
1535   BFD_RELOC_UNUSED
1536  } bfd_reloc_code_real_type;
1537 const struct reloc_howto_struct *
1538
1539 bfd_reloc_type_lookup  PARAMS ((bfd *abfd, bfd_reloc_code_real_type code));
1540
1541
1542 typedef struct symbol_cache_entry
1543 {
1544          /* A pointer to the BFD which owns the symbol. This information
1545            is necessary so that a back end can work out what additional
1546            information (invisible to the application writer) is carried
1547            with the symbol.
1548
1549            This field is *almost* redundant, since you can use section->owner
1550            instead, except that some symbols point to the global sections
1551            bfd_{abs,com,und}_section.  This could be fixed by making
1552            these globals be per-bfd (or per-target-flavor).  FIXME. */
1553
1554   struct _bfd *the_bfd;  /* Use bfd_asymbol_bfd(sym) to access this field. */
1555
1556          /* The text of the symbol. The name is left alone, and not copied; the
1557            application may not alter it. */
1558   CONST char *name;
1559
1560          /* The value of the symbol.  This really should be a union of a
1561           numeric value with a pointer, since some flags indicate that
1562           a pointer to another symbol is stored here.  */
1563   symvalue value;
1564
1565          /* Attributes of a symbol: */
1566
1567 #define BSF_NO_FLAGS    0x00
1568
1569          /* The symbol has local scope; <<static>> in <<C>>. The value
1570            is the offset into the section of the data. */
1571 #define BSF_LOCAL       0x01
1572
1573          /* The symbol has global scope; initialized data in <<C>>. The
1574            value is the offset into the section of the data. */
1575 #define BSF_GLOBAL      0x02
1576
1577          /* The symbol has global scope and is exported. The value is
1578            the offset into the section of the data. */
1579 #define BSF_EXPORT      BSF_GLOBAL  /* no real difference */
1580
1581          /* A normal C symbol would be one of:
1582            <<BSF_LOCAL>>, <<BSF_FORT_COMM>>,  <<BSF_UNDEFINED>> or
1583            <<BSF_GLOBAL>> */
1584
1585          /* The symbol is a debugging record. The value has an arbitary
1586            meaning. */
1587 #define BSF_DEBUGGING   0x08
1588
1589          /* The symbol denotes a function entry point.  Used in ELF,
1590            perhaps others someday.  */
1591 #define BSF_FUNCTION    0x10
1592
1593          /* Used by the linker. */
1594 #define BSF_KEEP        0x20
1595 #define BSF_KEEP_G      0x40
1596
1597          /* A weak global symbol, overridable without warnings by
1598            a regular global symbol of the same name.  */
1599 #define BSF_WEAK        0x80
1600
1601         /* This symbol was created to point to a section, e.g. ELF's
1602            STT_SECTION symbols.  */
1603 #define BSF_SECTION_SYM 0x100
1604
1605          /* The symbol used to be a common symbol, but now it is
1606            allocated. */
1607 #define BSF_OLD_COMMON  0x200
1608
1609          /* The default value for common data. */
1610 #define BFD_FORT_COMM_DEFAULT_VALUE 0
1611
1612          /* In some files the type of a symbol sometimes alters its
1613            location in an output file - ie in coff a <<ISFCN>> symbol
1614            which is also <<C_EXT>> symbol appears where it was
1615            declared and not at the end of a section.  This bit is set
1616            by the target BFD part to convey this information. */
1617
1618 #define BSF_NOT_AT_END    0x400
1619
1620          /* Signal that the symbol is the label of constructor section. */
1621 #define BSF_CONSTRUCTOR   0x800
1622
1623          /* Signal that the symbol is a warning symbol. If the symbol
1624            is a warning symbol, then the value field (I know this is
1625            tacky) will point to the asymbol which when referenced will
1626            cause the warning. */
1627 #define BSF_WARNING       0x1000
1628
1629          /* Signal that the symbol is indirect. The value of the symbol
1630            is a pointer to an undefined asymbol which contains the
1631            name to use instead. */
1632 #define BSF_INDIRECT      0x2000
1633
1634          /* BSF_FILE marks symbols that contain a file name.  This is used
1635            for ELF STT_FILE symbols.  */
1636 #define BSF_FILE          0x4000
1637
1638          /* Symbol is from dynamic linking information.  */
1639 #define BSF_DYNAMIC        0x8000
1640
1641   flagword flags;
1642
1643          /* A pointer to the section to which this symbol is
1644            relative.  This will always be non NULL, there are special
1645           sections for undefined and absolute symbols */
1646   struct sec *section;
1647
1648          /* Back end special data. This is being phased out in favour
1649            of making this a union. */
1650   PTR udata;
1651
1652 } asymbol;
1653 #define get_symtab_upper_bound(abfd) \
1654      BFD_SEND (abfd, _get_symtab_upper_bound, (abfd))
1655 #define bfd_canonicalize_symtab(abfd, location) \
1656      BFD_SEND (abfd, _bfd_canonicalize_symtab,\
1657                   (abfd, location))
1658 boolean
1659 bfd_set_symtab  PARAMS ((bfd *abfd, asymbol **location, unsigned int count));
1660
1661 void
1662 bfd_print_symbol_vandf PARAMS ((PTR file, asymbol *symbol));
1663
1664 #define bfd_make_empty_symbol(abfd) \
1665      BFD_SEND (abfd, _bfd_make_empty_symbol, (abfd))
1666 #define bfd_make_debug_symbol(abfd,ptr,size) \
1667         BFD_SEND (abfd, _bfd_make_debug_symbol, (abfd, ptr, size))
1668 int
1669 bfd_decode_symclass PARAMS ((asymbol *symbol));
1670
1671 void
1672 bfd_symbol_info PARAMS ((asymbol *symbol, symbol_info *ret));
1673
1674 struct _bfd
1675 {
1676      /* The filename the application opened the BFD with.  */
1677     CONST char *filename;
1678
1679      /* A pointer to the target jump table.             */
1680     struct bfd_target *xvec;
1681
1682      /* To avoid dragging too many header files into every file that
1683        includes `<<bfd.h>>', IOSTREAM has been declared as a "char
1684        *", and MTIME as a "long".  Their correct types, to which they
1685        are cast when used, are "FILE *" and "time_t".    The iostream
1686        is the result of an fopen on the filename. */
1687     char *iostream;
1688
1689      /* Is the file descriptor being cached?  That is, can it be closed as
1690        needed, and re-opened when accessed later?  */
1691
1692     boolean cacheable;
1693
1694      /* Marks whether there was a default target specified when the
1695        BFD was opened. This is used to select which matching algorithm
1696        to use to choose the back end. */
1697
1698     boolean target_defaulted;
1699
1700      /* The caching routines use these to maintain a
1701        least-recently-used list of BFDs */
1702
1703     struct _bfd *lru_prev, *lru_next;
1704
1705      /* When a file is closed by the caching routines, BFD retains
1706        state information on the file here: */
1707
1708     file_ptr where;
1709
1710      /* and here: (``once'' means at least once) */
1711
1712     boolean opened_once;
1713
1714      /* Set if we have a locally maintained mtime value, rather than
1715        getting it from the file each time: */
1716
1717     boolean mtime_set;
1718
1719      /* File modified time, if mtime_set is true: */
1720
1721     long mtime;
1722
1723      /* Reserved for an unimplemented file locking extension.*/
1724
1725     int ifd;
1726
1727      /* The format which belongs to the BFD. (object, core, etc.) */
1728
1729     bfd_format format;
1730
1731      /* The direction the BFD was opened with*/
1732
1733     enum bfd_direction {no_direction = 0,
1734                         read_direction = 1,
1735                         write_direction = 2,
1736                         both_direction = 3} direction;
1737
1738      /* Format_specific flags*/
1739
1740     flagword flags;
1741
1742      /* Currently my_archive is tested before adding origin to
1743        anything. I believe that this can become always an add of
1744        origin, with origin set to 0 for non archive files.   */
1745
1746     file_ptr origin;
1747
1748      /* Remember when output has begun, to stop strange things
1749        from happening. */
1750     boolean output_has_begun;
1751
1752      /* Pointer to linked list of sections*/
1753     struct sec  *sections;
1754
1755      /* The number of sections */
1756     unsigned int section_count;
1757
1758      /* Stuff only useful for object files:
1759        The start address. */
1760     bfd_vma start_address;
1761
1762      /* Used for input and output*/
1763     unsigned int symcount;
1764
1765      /* Symbol table for output BFD (with symcount entries) */
1766     struct symbol_cache_entry  **outsymbols;
1767
1768      /* Pointer to structure which contains architecture information*/
1769     struct bfd_arch_info *arch_info;
1770
1771      /* Stuff only useful for archives:*/
1772     PTR arelt_data;
1773     struct _bfd *my_archive;      /* The containing archive BFD.  */
1774     struct _bfd *next;            /* The next BFD in the archive.  */
1775     struct _bfd *archive_head;    /* The first BFD in the archive.  */
1776     boolean has_armap;
1777
1778      /* A chain of BFD structures involved in a link.  */
1779     struct _bfd *link_next;
1780
1781      /* A field used by _bfd_generic_link_add_archive_symbols.  This will
1782        be used only for archive elements.  */
1783     int archive_pass;
1784
1785      /* Used by the back end to hold private data. */
1786
1787     union
1788       {
1789       struct aout_data_struct *aout_data;
1790       struct artdata *aout_ar_data;
1791       struct _oasys_data *oasys_obj_data;
1792       struct _oasys_ar_data *oasys_ar_data;
1793       struct coff_tdata *coff_obj_data;
1794       struct ecoff_tdata *ecoff_obj_data;
1795       struct ieee_data_struct *ieee_data;
1796       struct ieee_ar_data_struct *ieee_ar_data;
1797       struct srec_data_struct *srec_data;
1798       struct tekhex_data_struct *tekhex_data;
1799       struct elf_obj_tdata *elf_obj_data;
1800       struct nlm_obj_tdata *nlm_obj_data;
1801       struct bout_data_struct *bout_data;
1802       struct sun_core_struct *sun_core_data;
1803       struct trad_core_struct *trad_core_data;
1804       struct som_data_struct *som_data;
1805       struct hpux_core_struct *hpux_core_data;
1806       struct hppabsd_core_struct *hppabsd_core_data;
1807       struct sgi_core_struct *sgi_core_data;
1808       struct lynx_core_struct *lynx_core_data;
1809       struct osf_core_struct *osf_core_data;
1810       PTR any;
1811       } tdata;
1812
1813      /* Used by the application to hold private data*/
1814     PTR usrdata;
1815
1816      /* Where all the allocated stuff under this BFD goes */
1817     struct obstack memory;
1818 };
1819
1820 unsigned int
1821 bfd_get_reloc_upper_bound PARAMS ((bfd *abfd, asection *sect));
1822
1823 unsigned int
1824 bfd_canonicalize_reloc
1825  PARAMS ((bfd *abfd,
1826     asection *sec,
1827     arelent **loc,
1828     asymbol     **syms));
1829
1830 void
1831 bfd_set_reloc
1832  PARAMS ((bfd *abfd, asection *sec, arelent **rel, unsigned int count)
1833
1834     );
1835
1836 boolean
1837 bfd_set_file_flags PARAMS ((bfd *abfd, flagword flags));
1838
1839 boolean
1840 bfd_set_start_address PARAMS ((bfd *abfd, bfd_vma vma));
1841
1842 long
1843 bfd_get_mtime PARAMS ((bfd *abfd));
1844
1845 long
1846 bfd_get_size PARAMS ((bfd *abfd));
1847
1848 int
1849 bfd_get_gp_size PARAMS ((bfd *abfd));
1850
1851 void
1852 bfd_set_gp_size PARAMS ((bfd *abfd, int i));
1853
1854 bfd_vma
1855 bfd_scan_vma PARAMS ((CONST char *string, CONST char **end, int base));
1856
1857 #define bfd_sizeof_headers(abfd, reloc) \
1858      BFD_SEND (abfd, _bfd_sizeof_headers, (abfd, reloc))
1859
1860 #define bfd_find_nearest_line(abfd, sec, syms, off, file, func, line) \
1861      BFD_SEND (abfd, _bfd_find_nearest_line,  (abfd, sec, syms, off, file, func, line))
1862
1863         /* Do these three do anything useful at all, for any back end?  */
1864 #define bfd_debug_info_start(abfd) \
1865         BFD_SEND (abfd, _bfd_debug_info_start, (abfd))
1866
1867 #define bfd_debug_info_end(abfd) \
1868         BFD_SEND (abfd, _bfd_debug_info_end, (abfd))
1869
1870 #define bfd_debug_info_accumulate(abfd, section) \
1871         BFD_SEND (abfd, _bfd_debug_info_accumulate, (abfd, section))
1872
1873
1874 #define bfd_stat_arch_elt(abfd, stat) \
1875         BFD_SEND (abfd, _bfd_stat_arch_elt,(abfd, stat))
1876
1877 #define bfd_set_arch_mach(abfd, arch, mach)\
1878         BFD_SEND ( abfd, _bfd_set_arch_mach, (abfd, arch, mach))
1879
1880 #define bfd_get_relocated_section_contents(abfd, link_info, link_order, data, relocateable, symbols) \
1881         BFD_SEND (abfd, _bfd_get_relocated_section_contents, \
1882                  (abfd, link_info, link_order, data, relocateable, symbols))
1883
1884 #define bfd_relax_section(abfd, section, link_info, symbols) \
1885        BFD_SEND (abfd, _bfd_relax_section, \
1886                  (abfd, section, link_info, symbols))
1887
1888 #define bfd_link_hash_table_create(abfd) \
1889         BFD_SEND (abfd, _bfd_link_hash_table_create, (abfd))
1890
1891 #define bfd_link_add_symbols(abfd, info) \
1892         BFD_SEND (abfd, _bfd_link_add_symbols, (abfd, info))
1893
1894 #define bfd_final_link(abfd, info) \
1895         BFD_SEND (abfd, _bfd_final_link, (abfd, info))
1896
1897 symindex
1898 bfd_get_next_mapent PARAMS ((bfd *abfd, symindex previous, carsym **sym));
1899
1900 boolean
1901 bfd_set_archive_head PARAMS ((bfd *output, bfd *new_head));
1902
1903 bfd *
1904 bfd_get_elt_at_index PARAMS ((bfd *archive, int index));
1905
1906 bfd *
1907 bfd_openr_next_archived_file PARAMS ((bfd *archive, bfd *previous));
1908
1909 CONST char *
1910 bfd_core_file_failing_command PARAMS ((bfd *abfd));
1911
1912 int
1913 bfd_core_file_failing_signal PARAMS ((bfd *abfd));
1914
1915 boolean
1916 core_file_matches_executable_p
1917  PARAMS ((bfd *core_bfd, bfd *exec_bfd));
1918
1919 #define BFD_SEND(bfd, message, arglist) \
1920                ((*((bfd)->xvec->message)) arglist)
1921 #define BFD_SEND_FMT(bfd, message, arglist) \
1922             (((bfd)->xvec->message[(int)((bfd)->format)]) arglist)
1923 enum bfd_flavour {
1924   bfd_target_unknown_flavour,
1925   bfd_target_aout_flavour,
1926   bfd_target_coff_flavour,
1927   bfd_target_ecoff_flavour,
1928   bfd_target_elf_flavour,
1929   bfd_target_ieee_flavour,
1930   bfd_target_nlm_flavour,
1931   bfd_target_oasys_flavour,
1932   bfd_target_tekhex_flavour,
1933   bfd_target_srec_flavour,
1934   bfd_target_som_flavour};
1935
1936  /* Forward declaration.  */
1937 typedef struct bfd_link_info _bfd_link_info;
1938
1939 typedef struct bfd_target
1940 {
1941   char *name;
1942   enum bfd_flavour flavour;
1943   boolean byteorder_big_p;
1944   boolean header_byteorder_big_p;
1945   flagword object_flags;
1946   flagword section_flags;
1947   char symbol_leading_char;
1948   char ar_pad_char;
1949   unsigned short ar_max_namelen;
1950   unsigned int align_power_min;
1951   bfd_vma      (*bfd_getx64) PARAMS ((const bfd_byte *));
1952   bfd_signed_vma (*bfd_getx_signed_64) PARAMS ((const bfd_byte *));
1953   void         (*bfd_putx64) PARAMS ((bfd_vma, bfd_byte *));
1954   bfd_vma      (*bfd_getx32) PARAMS ((const bfd_byte *));
1955   bfd_signed_vma (*bfd_getx_signed_32) PARAMS ((const bfd_byte *));
1956   void         (*bfd_putx32) PARAMS ((bfd_vma, bfd_byte *));
1957   bfd_vma      (*bfd_getx16) PARAMS ((const bfd_byte *));
1958   bfd_signed_vma (*bfd_getx_signed_16) PARAMS ((const bfd_byte *));
1959   void         (*bfd_putx16) PARAMS ((bfd_vma, bfd_byte *));
1960   bfd_vma      (*bfd_h_getx64) PARAMS ((const bfd_byte *));
1961   bfd_signed_vma (*bfd_h_getx_signed_64) PARAMS ((const bfd_byte *));
1962   void         (*bfd_h_putx64) PARAMS ((bfd_vma, bfd_byte *));
1963   bfd_vma      (*bfd_h_getx32) PARAMS ((const bfd_byte *));
1964   bfd_signed_vma (*bfd_h_getx_signed_32) PARAMS ((const bfd_byte *));
1965   void         (*bfd_h_putx32) PARAMS ((bfd_vma, bfd_byte *));
1966   bfd_vma      (*bfd_h_getx16) PARAMS ((const bfd_byte *));
1967   bfd_signed_vma (*bfd_h_getx_signed_16) PARAMS ((const bfd_byte *));
1968   void         (*bfd_h_putx16) PARAMS ((bfd_vma, bfd_byte *));
1969   struct bfd_target * (*_bfd_check_format[bfd_type_end]) PARAMS ((bfd *));
1970   boolean             (*_bfd_set_format[bfd_type_end]) PARAMS ((bfd *));
1971   boolean             (*_bfd_write_contents[bfd_type_end]) PARAMS ((bfd *));
1972   char *   (*_core_file_failing_command) PARAMS ((bfd *));
1973   int      (*_core_file_failing_signal) PARAMS ((bfd *));
1974   boolean  (*_core_file_matches_executable_p) PARAMS ((bfd *, bfd *));
1975   boolean  (*_bfd_slurp_armap) PARAMS ((bfd *));
1976   boolean  (*_bfd_slurp_extended_name_table) PARAMS ((bfd *));
1977   void     (*_bfd_truncate_arname) PARAMS ((bfd *, CONST char *, char *));
1978   boolean  (*write_armap) PARAMS ((bfd *arch,
1979                               unsigned int elength,
1980                               struct orl *map,
1981                               unsigned int orl_count,
1982                               int stridx));
1983   boolean       (*_close_and_cleanup) PARAMS ((bfd *));
1984   boolean       (*_bfd_set_section_contents) PARAMS ((bfd *, sec_ptr, PTR,
1985                                             file_ptr, bfd_size_type));
1986   boolean       (*_bfd_get_section_contents) PARAMS ((bfd *, sec_ptr, PTR,
1987                                             file_ptr, bfd_size_type));
1988   boolean       (*_new_section_hook) PARAMS ((bfd *, sec_ptr));
1989   unsigned int  (*_get_symtab_upper_bound) PARAMS ((bfd *));
1990   unsigned int  (*_bfd_canonicalize_symtab) PARAMS ((bfd *,
1991                                               struct symbol_cache_entry **));
1992   unsigned int  (*_get_reloc_upper_bound) PARAMS ((bfd *, sec_ptr));
1993   unsigned int  (*_bfd_canonicalize_reloc) PARAMS ((bfd *, sec_ptr, arelent **,
1994                                               struct symbol_cache_entry **));
1995   struct symbol_cache_entry  *
1996                 (*_bfd_make_empty_symbol) PARAMS ((bfd *));
1997   void          (*_bfd_print_symbol) PARAMS ((bfd *, PTR,
1998                                       struct symbol_cache_entry *,
1999                                       bfd_print_symbol_type));
2000 #define bfd_print_symbol(b,p,s,e) BFD_SEND(b, _bfd_print_symbol, (b,p,s,e))
2001   void          (*_bfd_get_symbol_info) PARAMS ((bfd *,
2002                                       struct symbol_cache_entry *,
2003                                       symbol_info *));
2004 #define bfd_get_symbol_info(b,p,e) BFD_SEND(b, _bfd_get_symbol_info, (b,p,e))
2005   alent *    (*_get_lineno) PARAMS ((bfd *, struct symbol_cache_entry *));
2006
2007   boolean    (*_bfd_set_arch_mach) PARAMS ((bfd *, enum bfd_architecture,
2008                     unsigned long));
2009
2010   bfd *      (*openr_next_archived_file) PARAMS ((bfd *arch, bfd *prev));
2011
2012   boolean    (*_bfd_find_nearest_line) PARAMS ((bfd *abfd,
2013                     struct sec *section, struct symbol_cache_entry **symbols,
2014                     bfd_vma offset, CONST char **file, CONST char **func,
2015                     unsigned int *line));
2016
2017   int        (*_bfd_stat_arch_elt) PARAMS ((bfd *, struct stat *));
2018
2019   int        (*_bfd_sizeof_headers) PARAMS ((bfd *, boolean));
2020
2021   void       (*_bfd_debug_info_start) PARAMS ((bfd *));
2022   void       (*_bfd_debug_info_end) PARAMS ((bfd *));
2023   void       (*_bfd_debug_info_accumulate) PARAMS ((bfd *, struct sec *));
2024
2025   bfd_byte * (*_bfd_get_relocated_section_contents) PARAMS ((bfd *,
2026                     struct bfd_link_info *, struct bfd_link_order *,
2027                     bfd_byte *data, boolean relocateable,
2028                     struct symbol_cache_entry **));
2029
2030   boolean    (*_bfd_relax_section) PARAMS ((bfd *, struct sec *,
2031                     struct bfd_link_info *, struct symbol_cache_entry **));
2032
2033   /* See documentation on reloc types.  */
2034  CONST struct reloc_howto_struct *
2035        (*reloc_type_lookup) PARAMS ((bfd *abfd,
2036                                      bfd_reloc_code_real_type code));
2037
2038   /* Back-door to allow format-aware applications to create debug symbols
2039     while using BFD for everything else.  Currently used by the assembler
2040     when creating COFF files.  */
2041  asymbol *  (*_bfd_make_debug_symbol) PARAMS ((
2042        bfd *abfd,
2043        void *ptr,
2044        unsigned long size));
2045
2046   /* Create a hash table for the linker.  Different backends store
2047     different information in this table.  */
2048  struct bfd_link_hash_table *(*_bfd_link_hash_table_create) PARAMS ((bfd *));
2049
2050   /* Add symbols from this object file into the hash table.  */
2051  boolean (*_bfd_link_add_symbols) PARAMS ((bfd *, struct bfd_link_info *));
2052
2053   /* Do a link based on the link_order structures attached to each
2054     section of the BFD.  */
2055  boolean (*_bfd_final_link) PARAMS ((bfd *, struct bfd_link_info *));
2056
2057  PTR backend_data;
2058 } bfd_target;
2059 bfd_target *
2060 bfd_find_target PARAMS ((CONST char *target_name, bfd *abfd));
2061
2062 CONST char **
2063 bfd_target_list PARAMS ((void));
2064
2065 boolean
2066 bfd_check_format PARAMS ((bfd *abfd, bfd_format format));
2067
2068 boolean
2069 bfd_set_format PARAMS ((bfd *abfd, bfd_format format));
2070
2071 CONST char *
2072 bfd_format_string PARAMS ((bfd_format format));
2073
2074 #endif