bfd/bfd-in.h

   1 /* Main header file for the bfd library -- portable access to object files.
   2
   3    Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
   4    1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008
   5    Free Software Foundation, Inc.
   6
   7    Contributed by Cygnus Support.
   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 3 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., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.  */
  24
  25 #ifndef __BFD_H_SEEN__
  26 #define __BFD_H_SEEN__
  27
  28 #ifdef __cplusplus
  29 extern "C" {
  30 #endif
  31
  32 #include "ansidecl.h"
  33 #include "symcat.h"
  34 #if defined (__STDC__) || defined (ALMOST_STDC) || defined (HAVE_STRINGIZE)
  35 #ifndef SABER
  36 /* This hack is to avoid a problem with some strict ANSI C preprocessors.
  37    The problem is, "32_" is not a valid preprocessing token, and we don't
  38    want extra underscores (e.g., "nlm_32_").  The XCONCAT2 macro will
  39    cause the inner CONCAT2 macros to be evaluated first, producing
  40    still-valid pp-tokens.  Then the final concatenation can be done.  */
  41 #undef CONCAT4
  42 #define CONCAT4(a,b,c,d) XCONCAT2(CONCAT2(a,b),CONCAT2(c,d))
  43 #endif
  44 #endif
  45
  46 /* This is a utility macro to handle the situation where the code
  47    wants to place a constant string into the code, followed by a
  48    comma and then the length of the string.  Doing this by hand
  49    is error prone, so using this macro is safer.  */
  50 #define STRING_COMMA_LEN(STR) (STR), (sizeof (STR) - 1)
  51 /* Unfortunately it is not possible to use the STRING_COMMA_LEN macro
  52    to create the arguments to another macro, since the preprocessor
  53    will mis-count the number of arguments to the outer macro (by not
  54    evaluating STRING_COMMA_LEN and so missing the comma).  This is a
  55    problem for example when trying to use STRING_COMMA_LEN to build
  56    the arguments to the strncmp() macro.  Hence this alternative
  57    definition of strncmp is provided here.
  58
  59    Note - these macros do NOT work if STR2 is not a constant string.  */
  60 #define CONST_STRNEQ(STR1,STR2) (strncmp ((STR1), (STR2), sizeof (STR2) - 1) == 0)
  61   /* strcpy() can have a similar problem, but since we know we are
  62      copying a constant string, we can use memcpy which will be faster
  63      since there is no need to check for a NUL byte inside STR.  We
  64      can also save time if we do not need to copy the terminating NUL.  */
  65 #define LITMEMCPY(DEST,STR2) memcpy ((DEST), (STR2), sizeof (STR2) - 1)
  66 #define LITSTRCPY(DEST,STR2) memcpy ((DEST), (STR2), sizeof (STR2))
  67
  68
  69 #define BFD_SUPPORTS_PLUGINS @supports_plugins@
  70
  71 /* The word size used by BFD on the host.  This may be 64 with a 32
  72    bit target if the host is 64 bit, or if other 64 bit targets have
  73    been selected with --enable-targets, or if --enable-64-bit-bfd.  */
  74 #define BFD_ARCH_SIZE @wordsize@
  75
  76 /* The word size of the default bfd target.  */
  77 #define BFD_DEFAULT_TARGET_SIZE @bfd_default_target_size@
  78
  79 #define BFD_HOST_64BIT_LONG @BFD_HOST_64BIT_LONG@
  80 #define BFD_HOST_64BIT_LONG_LONG @BFD_HOST_64BIT_LONG_LONG@
  81 #if @BFD_HOST_64_BIT_DEFINED@
  82 #define BFD_HOST_64_BIT @BFD_HOST_64_BIT@
  83 #define BFD_HOST_U_64_BIT @BFD_HOST_U_64_BIT@
  84 typedef BFD_HOST_64_BIT bfd_int64_t;
  85 typedef BFD_HOST_U_64_BIT bfd_uint64_t;
  86 #endif
  87
  88 #if BFD_ARCH_SIZE >= 64
  89 #define BFD64
  90 #endif
  91
  92 #ifndef INLINE
  93 #if __GNUC__ >= 2
  94 #define INLINE __inline__
  95 #else
  96 #define INLINE
  97 #endif
  98 #endif
  99
 100 /* Declaring a type wide enough to hold a host long and a host pointer.  */
 101 #define BFD_HOSTPTR_T   @BFD_HOSTPTR_T@
 102 typedef BFD_HOSTPTR_T bfd_hostptr_t;
 103
 104 /* Forward declaration.  */
 105 typedef struct bfd bfd;
 106
 107 /* Boolean type used in bfd.  Too many systems define their own
 108    versions of "boolean" for us to safely typedef a "boolean" of
 109    our own.  Using an enum for "bfd_boolean" has its own set of
 110    problems, with strange looking casts required to avoid warnings
 111    on some older compilers.  Thus we just use an int.
 112
 113    General rule: Functions which are bfd_boolean return TRUE on
 114    success and FALSE on failure (unless they're a predicate).  */
 115
 116 typedef int bfd_boolean;
 117 #undef FALSE
 118 #undef TRUE
 119 #define FALSE 0
 120 #define TRUE 1
 121
 122 #ifdef BFD64
 123
 124 #ifndef BFD_HOST_64_BIT
 125  #error No 64 bit integer type available
 126 #endif /* ! defined (BFD_HOST_64_BIT) */
 127
 128 typedef BFD_HOST_U_64_BIT bfd_vma;
 129 typedef BFD_HOST_64_BIT bfd_signed_vma;
 130 typedef BFD_HOST_U_64_BIT bfd_size_type;
 131 typedef BFD_HOST_U_64_BIT symvalue;
 132
 133 #if BFD_HOST_64BIT_LONG
 134 #define BFD_VMA_FMT "l"
 135 #elif defined (__MSVCRT__)
 136 #define BFD_VMA_FMT "I64"
 137 #else
 138 #define BFD_VMA_FMT "ll"
 139 #endif
 140
 141 #ifndef fprintf_vma
 142 #define sprintf_vma(s,x) sprintf (s, "%016" BFD_VMA_FMT "x", x)
 143 #define fprintf_vma(f,x) fprintf (f, "%016" BFD_VMA_FMT "x", x)
 144 #endif
 145
 146 #else /* not BFD64  */
 147
 148 /* Represent a target address.  Also used as a generic unsigned type
 149    which is guaranteed to be big enough to hold any arithmetic types
 150    we need to deal with.  */
 151 typedef unsigned long bfd_vma;
 152
 153 /* A generic signed type which is guaranteed to be big enough to hold any
 154    arithmetic types we need to deal with.  Can be assumed to be compatible
 155    with bfd_vma in the same way that signed and unsigned ints are compatible
 156    (as parameters, in assignment, etc).  */
 157 typedef long bfd_signed_vma;
 158
 159 typedef unsigned long symvalue;
 160 typedef unsigned long bfd_size_type;
 161
 162 /* Print a bfd_vma x on stream s.  */
 163 #define BFD_VMA_FMT "l"
 164 #define fprintf_vma(s,x) fprintf (s, "%08" BFD_VMA_FMT "x", x)
 165 #define sprintf_vma(s,x) sprintf (s, "%08" BFD_VMA_FMT "x", x)
 166
 167 #endif /* not BFD64  */
 168
 169 #define HALF_BFD_SIZE_TYPE \
 170   (((bfd_size_type) 1) << (8 * sizeof (bfd_size_type) / 2))
 171
 172 #ifndef BFD_HOST_64_BIT
 173 /* Fall back on a 32 bit type.  The idea is to make these types always
 174    available for function return types, but in the case that
 175    BFD_HOST_64_BIT is undefined such a function should abort or
 176    otherwise signal an error.  */
 177 typedef bfd_signed_vma bfd_int64_t;
 178 typedef bfd_vma bfd_uint64_t;
 179 #endif
 180
 181 /* An offset into a file.  BFD always uses the largest possible offset
 182    based on the build time availability of fseek, fseeko, or fseeko64.  */
 183 typedef @bfd_file_ptr@ file_ptr;
 184 typedef unsigned @bfd_file_ptr@ ufile_ptr;
 185
 186 extern void bfd_sprintf_vma (bfd *, char *, bfd_vma);
 187 extern void bfd_fprintf_vma (bfd *, void *, bfd_vma);
 188
 189 #define printf_vma(x) fprintf_vma(stdout,x)
 190 #define bfd_printf_vma(abfd,x) bfd_fprintf_vma (abfd,stdout,x)
 191
 192 typedef unsigned int flagword;  /* 32 bits of flags */
 193 typedef unsigned char bfd_byte;
 194 \f
 195 /* File formats.  */
 196
 197 typedef enum bfd_format
 198 {
 199   bfd_unknown = 0,      /* File format is unknown.  */
 200   bfd_object,           /* Linker/assembler/compiler output.  */
 201   bfd_archive,          /* Object archive file.  */
 202   bfd_core,             /* Core dump.  */
 203   bfd_type_end          /* Marks the end; don't use it!  */
 204 }
 205 bfd_format;
 206 \f
 207 /* Symbols and relocation.  */
 208
 209 /* A count of carsyms (canonical archive symbols).  */
 210 typedef unsigned long symindex;
 211
 212 /* How to perform a relocation.  */
 213 typedef const struct reloc_howto_struct reloc_howto_type;
 214
 215 #define BFD_NO_MORE_SYMBOLS ((symindex) ~0)
 216
 217 /* General purpose part of a symbol X;
 218    target specific parts are in libcoff.h, libaout.h, etc.  */
 219
 220 #define bfd_get_section(x) ((x)->section)
 221 #define bfd_get_output_section(x) ((x)->section->output_section)
 222 #define bfd_set_section(x,y) ((x)->section) = (y)
 223 #define bfd_asymbol_base(x) ((x)->section->vma)
 224 #define bfd_asymbol_value(x) (bfd_asymbol_base(x) + (x)->value)
 225 #define bfd_asymbol_name(x) ((x)->name)
 226 /*Perhaps future: #define bfd_asymbol_bfd(x) ((x)->section->owner)*/
 227 #define bfd_asymbol_bfd(x) ((x)->the_bfd)
 228 #define bfd_asymbol_flavour(x)                  \
 229   (((x)->flags & BSF_SYNTHETIC) != 0            \
 230    ? bfd_target_unknown_flavour                 \
 231    : bfd_asymbol_bfd (x)->xvec->flavour)
 232
 233 /* A canonical archive symbol.  */
 234 /* This is a type pun with struct ranlib on purpose!  */
 235 typedef struct carsym
 236 {
 237   char *name;
 238   file_ptr file_offset; /* Look here to find the file.  */
 239 }
 240 carsym;                 /* To make these you call a carsymogen.  */
 241
 242 /* Used in generating armaps (archive tables of contents).
 243    Perhaps just a forward definition would do?  */
 244 struct orl                      /* Output ranlib.  */
 245 {
 246   char **name;          /* Symbol name.  */
 247   union
 248   {
 249     file_ptr pos;
 250     bfd *abfd;
 251   } u;                  /* bfd* or file position.  */
 252   int namidx;           /* Index into string table.  */
 253 };
 254 \f
 255 /* Linenumber stuff.  */
 256 typedef struct lineno_cache_entry
 257 {
 258   unsigned int line_number;     /* Linenumber from start of function.  */
 259   union
 260   {
 261     struct bfd_symbol *sym;     /* Function name.  */
 262     bfd_vma offset;                     /* Offset into section.  */
 263   } u;
 264 }
 265 alent;
 266 \f
 267 /* Object and core file sections.  */
 268
 269 #define align_power(addr, align)        \
 270   (((addr) + ((bfd_vma) 1 << (align)) - 1) & ((bfd_vma) -1 << (align)))
 271
 272 typedef struct bfd_section *sec_ptr;
 273
 274 #define bfd_get_section_name(bfd, ptr) ((ptr)->name + 0)
 275 #define bfd_get_section_vma(bfd, ptr) ((ptr)->vma + 0)
 276 #define bfd_get_section_lma(bfd, ptr) ((ptr)->lma + 0)
 277 #define bfd_get_section_alignment(bfd, ptr) ((ptr)->alignment_power + 0)
 278 #define bfd_section_name(bfd, ptr) ((ptr)->name)
 279 #define bfd_section_size(bfd, ptr) ((ptr)->size)
 280 #define bfd_get_section_size(ptr) ((ptr)->size)
 281 #define bfd_section_vma(bfd, ptr) ((ptr)->vma)
 282 #define bfd_section_lma(bfd, ptr) ((ptr)->lma)
 283 #define bfd_section_alignment(bfd, ptr) ((ptr)->alignment_power)
 284 #define bfd_get_section_flags(bfd, ptr) ((ptr)->flags + 0)
 285 #define bfd_get_section_userdata(bfd, ptr) ((ptr)->userdata)
 286
 287 #define bfd_is_com_section(ptr) (((ptr)->flags & SEC_IS_COMMON) != 0)
 288
 289 #define bfd_set_section_vma(bfd, ptr, val) (((ptr)->vma = (ptr)->lma = (val)), ((ptr)->user_set_vma = TRUE), TRUE)
 290 #define bfd_set_section_alignment(bfd, ptr, val) (((ptr)->alignment_power = (val)),TRUE)
 291 #define bfd_set_section_userdata(bfd, ptr, val) (((ptr)->userdata = (val)),TRUE)
 292 /* Find the address one past the end of SEC.  */
 293 #define bfd_get_section_limit(bfd, sec) \
 294   (((sec)->rawsize ? (sec)->rawsize : (sec)->size) \
 295    / bfd_octets_per_byte (bfd))
 296
 297 /* Return TRUE if section has been discarded.  */
 298 #define elf_discarded_section(sec)                              \
 299   (!bfd_is_abs_section (sec)                                    \
 300    && bfd_is_abs_section ((sec)->output_section)                \
 301    && (sec)->sec_info_type != ELF_INFO_TYPE_MERGE               \
 302    && (sec)->sec_info_type != ELF_INFO_TYPE_JUST_SYMS)
 303
 304 /* Forward define.  */
 305 struct stat;
 306 \f
 307 typedef enum bfd_print_symbol
 308 {
 309   bfd_print_symbol_name,
 310   bfd_print_symbol_more,
 311   bfd_print_symbol_all
 312 } bfd_print_symbol_type;
 313
 314 /* Information about a symbol that nm needs.  */
 315
 316 typedef struct _symbol_info
 317 {
 318   symvalue value;
 319   char type;
 320   const char *name;            /* Symbol name.  */
 321   unsigned char stab_type;     /* Stab type.  */
 322   char stab_other;             /* Stab other.  */
 323   short stab_desc;             /* Stab desc.  */
 324   const char *stab_name;       /* String for stab type.  */
 325 } symbol_info;
 326
 327 /* Get the name of a stabs type code.  */
 328
 329 extern const char *bfd_get_stab_name (int);
 330 \f
 331 /* Hash table routines.  There is no way to free up a hash table.  */
 332
 333 /* An element in the hash table.  Most uses will actually use a larger
 334    structure, and an instance of this will be the first field.  */
 335
 336 struct bfd_hash_entry
 337 {
 338   /* Next entry for this hash code.  */
 339   struct bfd_hash_entry *next;
 340   /* String being hashed.  */
 341   const char *string;
 342   /* Hash code.  This is the full hash code, not the index into the
 343      table.  */
 344   unsigned long hash;
 345 };
 346
 347 /* A hash table.  */
 348
 349 struct bfd_hash_table
 350 {
 351   /* The hash array.  */
 352   struct bfd_hash_entry **table;
 353   /* A function used to create new elements in the hash table.  The
 354      first entry is itself a pointer to an element.  When this
 355      function is first invoked, this pointer will be NULL.  However,
 356      having the pointer permits a hierarchy of method functions to be
 357      built each of which calls the function in the superclass.  Thus
 358      each function should be written to allocate a new block of memory
 359      only if the argument is NULL.  */
 360   struct bfd_hash_entry *(*newfunc)
 361     (struct bfd_hash_entry *, struct bfd_hash_table *, const char *);
 362    /* An objalloc for this hash table.  This is a struct objalloc *,
 363      but we use void * to avoid requiring the inclusion of objalloc.h.  */
 364   void *memory;
 365   /* The number of slots in the hash table.  */
 366   unsigned int size;
 367   /* The number of entries in the hash table.  */
 368   unsigned int count;
 369   /* The size of elements.  */
 370   unsigned int entsize;
 371   /* If non-zero, don't grow the hash table.  */
 372   unsigned int frozen:1;
 373 };
 374
 375 /* Initialize a hash table.  */
 376 extern bfd_boolean bfd_hash_table_init
 377   (struct bfd_hash_table *,
 378    struct bfd_hash_entry *(*) (struct bfd_hash_entry *,
 379                                struct bfd_hash_table *,
 380                                const char *),
 381    unsigned int);
 382
 383 /* Initialize a hash table specifying a size.  */
 384 extern bfd_boolean bfd_hash_table_init_n
 385   (struct bfd_hash_table *,
 386    struct bfd_hash_entry *(*) (struct bfd_hash_entry *,
 387                                struct bfd_hash_table *,
 388                                const char *),
 389    unsigned int, unsigned int);
 390
 391 /* Free up a hash table.  */
 392 extern void bfd_hash_table_free
 393   (struct bfd_hash_table *);
 394
 395 /* Look up a string in a hash table.  If CREATE is TRUE, a new entry
 396    will be created for this string if one does not already exist.  The
 397    COPY argument must be TRUE if this routine should copy the string
 398    into newly allocated memory when adding an entry.  */
 399 extern struct bfd_hash_entry *bfd_hash_lookup
 400   (struct bfd_hash_table *, const char *, bfd_boolean create,
 401    bfd_boolean copy);
 402
 403 /* Insert an entry in a hash table.  */
 404 extern struct bfd_hash_entry *bfd_hash_insert
 405   (struct bfd_hash_table *, const char *, unsigned long);
 406
 407 /* Replace an entry in a hash table.  */
 408 extern void bfd_hash_replace
 409   (struct bfd_hash_table *, struct bfd_hash_entry *old,
 410    struct bfd_hash_entry *nw);
 411
 412 /* Base method for creating a hash table entry.  */
 413 extern struct bfd_hash_entry *bfd_hash_newfunc
 414   (struct bfd_hash_entry *, struct bfd_hash_table *, const char *);
 415
 416 /* Grab some space for a hash table entry.  */
 417 extern void *bfd_hash_allocate
 418   (struct bfd_hash_table *, unsigned int);
 419
 420 /* Traverse a hash table in a random order, calling a function on each
 421    element.  If the function returns FALSE, the traversal stops.  The
 422    INFO argument is passed to the function.  */
 423 extern void bfd_hash_traverse
 424   (struct bfd_hash_table *,
 425    bfd_boolean (*) (struct bfd_hash_entry *, void *),
 426    void *info);
 427
 428 /* Allows the default size of a hash table to be configured. New hash
 429    tables allocated using bfd_hash_table_init will be created with
 430    this size.  */
 431 extern void bfd_hash_set_default_size (bfd_size_type);
 432
 433 /* This structure is used to keep track of stabs in sections
 434    information while linking.  */
 435
 436 struct stab_info
 437 {
 438   /* A hash table used to hold stabs strings.  */
 439   struct bfd_strtab_hash *strings;
 440   /* The header file hash table.  */
 441   struct bfd_hash_table includes;
 442   /* The first .stabstr section.  */
 443   struct bfd_section *stabstr;
 444 };
 445
 446 #define COFF_SWAP_TABLE (void *) &bfd_coff_std_swap_table
 447
 448 /* User program access to BFD facilities.  */
 449
 450 /* Direct I/O routines, for programs which know more about the object
 451    file than BFD does.  Use higher level routines if possible.  */
 452
 453 extern bfd_size_type bfd_bread (void *, bfd_size_type, bfd *);
 454 extern bfd_size_type bfd_bwrite (const void *, bfd_size_type, bfd *);
 455 extern int bfd_seek (bfd *, file_ptr, int);
 456 extern file_ptr bfd_tell (bfd *);
 457 extern int bfd_flush (bfd *);
 458 extern int bfd_stat (bfd *, struct stat *);
 459
 460 /* Deprecated old routines.  */
 461 #if __GNUC__
 462 #define bfd_read(BUF, ELTSIZE, NITEMS, ABFD)                            \
 463   (warn_deprecated ("bfd_read", __FILE__, __LINE__, __FUNCTION__),      \
 464    bfd_bread ((BUF), (ELTSIZE) * (NITEMS), (ABFD)))
 465 #define bfd_write(BUF, ELTSIZE, NITEMS, ABFD)                           \
 466   (warn_deprecated ("bfd_write", __FILE__, __LINE__, __FUNCTION__),     \
 467    bfd_bwrite ((BUF), (ELTSIZE) * (NITEMS), (ABFD)))
 468 #else
 469 #define bfd_read(BUF, ELTSIZE, NITEMS, ABFD)                            \
 470   (warn_deprecated ("bfd_read", (const char *) 0, 0, (const char *) 0), \
 471    bfd_bread ((BUF), (ELTSIZE) * (NITEMS), (ABFD)))
 472 #define bfd_write(BUF, ELTSIZE, NITEMS, ABFD)                           \
 473   (warn_deprecated ("bfd_write", (const char *) 0, 0, (const char *) 0),\
 474    bfd_bwrite ((BUF), (ELTSIZE) * (NITEMS), (ABFD)))
 475 #endif
 476 extern void warn_deprecated (const char *, const char *, int, const char *);
 477
 478 /* Cast from const char * to char * so that caller can assign to
 479    a char * without a warning.  */
 480 #define bfd_get_filename(abfd) ((char *) (abfd)->filename)
 481 #define bfd_get_cacheable(abfd) ((abfd)->cacheable)
 482 #define bfd_get_format(abfd) ((abfd)->format)
 483 #define bfd_get_target(abfd) ((abfd)->xvec->name)
 484 #define bfd_get_flavour(abfd) ((abfd)->xvec->flavour)
 485 #define bfd_family_coff(abfd) \
 486   (bfd_get_flavour (abfd) == bfd_target_coff_flavour || \
 487    bfd_get_flavour (abfd) == bfd_target_xcoff_flavour)
 488 #define bfd_big_endian(abfd) ((abfd)->xvec->byteorder == BFD_ENDIAN_BIG)
 489 #define bfd_little_endian(abfd) ((abfd)->xvec->byteorder == BFD_ENDIAN_LITTLE)
 490 #define bfd_header_big_endian(abfd) \
 491   ((abfd)->xvec->header_byteorder == BFD_ENDIAN_BIG)
 492 #define bfd_header_little_endian(abfd) \
 493   ((abfd)->xvec->header_byteorder == BFD_ENDIAN_LITTLE)
 494 #define bfd_get_file_flags(abfd) ((abfd)->flags)
 495 #define bfd_applicable_file_flags(abfd) ((abfd)->xvec->object_flags)
 496 #define bfd_applicable_section_flags(abfd) ((abfd)->xvec->section_flags)
 497 #define bfd_my_archive(abfd) ((abfd)->my_archive)
 498 #define bfd_has_map(abfd) ((abfd)->has_armap)
 499 #define bfd_is_thin_archive(abfd) ((abfd)->is_thin_archive)
 500
 501 #define bfd_valid_reloc_types(abfd) ((abfd)->xvec->valid_reloc_types)
 502 #define bfd_usrdata(abfd) ((abfd)->usrdata)
 503
 504 #define bfd_get_start_address(abfd) ((abfd)->start_address)
 505 #define bfd_get_symcount(abfd) ((abfd)->symcount)
 506 #define bfd_get_outsymbols(abfd) ((abfd)->outsymbols)
 507 #define bfd_count_sections(abfd) ((abfd)->section_count)
 508
 509 #define bfd_get_dynamic_symcount(abfd) ((abfd)->dynsymcount)
 510
 511 #define bfd_get_symbol_leading_char(abfd) ((abfd)->xvec->symbol_leading_char)
 512
 513 #define bfd_set_cacheable(abfd,bool) (((abfd)->cacheable = bool), TRUE)
 514
 515 extern bfd_boolean bfd_cache_close
 516   (bfd *abfd);
 517 /* NB: This declaration should match the autogenerated one in libbfd.h.  */
 518
 519 extern bfd_boolean bfd_cache_close_all (void);
 520
 521 extern bfd_boolean bfd_record_phdr
 522   (bfd *, unsigned long, bfd_boolean, flagword, bfd_boolean, bfd_vma,
 523    bfd_boolean, bfd_boolean, unsigned int, struct bfd_section **);
 524
 525 /* Byte swapping routines.  */
 526
 527 bfd_uint64_t bfd_getb64 (const void *);
 528 bfd_uint64_t bfd_getl64 (const void *);
 529 bfd_int64_t bfd_getb_signed_64 (const void *);
 530 bfd_int64_t bfd_getl_signed_64 (const void *);
 531 bfd_vma bfd_getb32 (const void *);
 532 bfd_vma bfd_getl32 (const void *);
 533 bfd_signed_vma bfd_getb_signed_32 (const void *);
 534 bfd_signed_vma bfd_getl_signed_32 (const void *);
 535 bfd_vma bfd_getb16 (const void *);
 536 bfd_vma bfd_getl16 (const void *);
 537 bfd_signed_vma bfd_getb_signed_16 (const void *);
 538 bfd_signed_vma bfd_getl_signed_16 (const void *);
 539 void bfd_putb64 (bfd_uint64_t, void *);
 540 void bfd_putl64 (bfd_uint64_t, void *);
 541 void bfd_putb32 (bfd_vma, void *);
 542 void bfd_putl32 (bfd_vma, void *);
 543 void bfd_putb16 (bfd_vma, void *);
 544 void bfd_putl16 (bfd_vma, void *);
 545
 546 /* Byte swapping routines which take size and endiannes as arguments.  */
 547
 548 bfd_uint64_t bfd_get_bits (const void *, int, bfd_boolean);
 549 void bfd_put_bits (bfd_uint64_t, void *, int, bfd_boolean);
 550
 551 extern bfd_boolean bfd_section_already_linked_table_init (void);
 552 extern void bfd_section_already_linked_table_free (void);
 553 \f
 554 /* Externally visible ECOFF routines.  */
 555
 556 #if defined(__STDC__) || defined(ALMOST_STDC)
 557 struct ecoff_debug_info;
 558 struct ecoff_debug_swap;
 559 struct ecoff_extr;
 560 struct bfd_symbol;
 561 struct bfd_link_info;
 562 struct bfd_link_hash_entry;
 563 struct bfd_elf_version_tree;
 564 #endif
 565 extern bfd_vma bfd_ecoff_get_gp_value
 566   (bfd * abfd);
 567 extern bfd_boolean bfd_ecoff_set_gp_value
 568   (bfd *abfd, bfd_vma gp_value);
 569 extern bfd_boolean bfd_ecoff_set_regmasks
 570   (bfd *abfd, unsigned long gprmask, unsigned long fprmask,
 571    unsigned long *cprmask);
 572 extern void *bfd_ecoff_debug_init
 573   (bfd *output_bfd, struct ecoff_debug_info *output_debug,
 574    const struct ecoff_debug_swap *output_swap, struct bfd_link_info *);
 575 extern void bfd_ecoff_debug_free
 576   (void *handle, bfd *output_bfd, struct ecoff_debug_info *output_debug,
 577    const struct ecoff_debug_swap *output_swap, struct bfd_link_info *);
 578 extern bfd_boolean bfd_ecoff_debug_accumulate
 579   (void *handle, bfd *output_bfd, struct ecoff_debug_info *output_debug,
 580    const struct ecoff_debug_swap *output_swap, bfd *input_bfd,
 581    struct ecoff_debug_info *input_debug,
 582    const struct ecoff_debug_swap *input_swap, struct bfd_link_info *);
 583 extern bfd_boolean bfd_ecoff_debug_accumulate_other
 584   (void *handle, bfd *output_bfd, struct ecoff_debug_info *output_debug,
 585    const struct ecoff_debug_swap *output_swap, bfd *input_bfd,
 586    struct bfd_link_info *);
 587 extern bfd_boolean bfd_ecoff_debug_externals
 588   (bfd *abfd, struct ecoff_debug_info *debug,
 589    const struct ecoff_debug_swap *swap, bfd_boolean relocatable,
 590    bfd_boolean (*get_extr) (struct bfd_symbol *, struct ecoff_extr *),
 591    void (*set_index) (struct bfd_symbol *, bfd_size_type));
 592 extern bfd_boolean bfd_ecoff_debug_one_external
 593   (bfd *abfd, struct ecoff_debug_info *debug,
 594    const struct ecoff_debug_swap *swap, const char *name,
 595    struct ecoff_extr *esym);
 596 extern bfd_size_type bfd_ecoff_debug_size
 597   (bfd *abfd, struct ecoff_debug_info *debug,
 598    const struct ecoff_debug_swap *swap);
 599 extern bfd_boolean bfd_ecoff_write_debug
 600   (bfd *abfd, struct ecoff_debug_info *debug,
 601    const struct ecoff_debug_swap *swap, file_ptr where);
 602 extern bfd_boolean bfd_ecoff_write_accumulated_debug
 603   (void *handle, bfd *abfd, struct ecoff_debug_info *debug,
 604    const struct ecoff_debug_swap *swap,
 605    struct bfd_link_info *info, file_ptr where);
 606
 607 /* Externally visible ELF routines.  */
 608
 609 struct bfd_link_needed_list
 610 {
 611   struct bfd_link_needed_list *next;
 612   bfd *by;
 613   const char *name;
 614 };
 615
 616 enum dynamic_lib_link_class {
 617   DYN_NORMAL = 0,
 618   DYN_AS_NEEDED = 1,
 619   DYN_DT_NEEDED = 2,
 620   DYN_NO_ADD_NEEDED = 4,
 621   DYN_NO_NEEDED = 8
 622 };
 623
 624 enum notice_asneeded_action {
 625   notice_as_needed,
 626   notice_not_needed,
 627   notice_needed
 628 };
 629
 630 extern bfd_boolean bfd_elf_record_link_assignment
 631   (bfd *, struct bfd_link_info *, const char *, bfd_boolean,
 632    bfd_boolean);
 633 extern struct bfd_link_needed_list *bfd_elf_get_needed_list
 634   (bfd *, struct bfd_link_info *);
 635 extern bfd_boolean bfd_elf_get_bfd_needed_list
 636   (bfd *, struct bfd_link_needed_list **);
 637 extern bfd_boolean bfd_elf_size_dynamic_sections
 638   (bfd *, const char *, const char *, const char *, const char * const *,
 639    struct bfd_link_info *, struct bfd_section **,
 640    struct bfd_elf_version_tree *);
 641 extern bfd_boolean bfd_elf_size_dynsym_hash_dynstr
 642   (bfd *, struct bfd_link_info *);
 643 extern void bfd_elf_set_dt_needed_name
 644   (bfd *, const char *);
 645 extern const char *bfd_elf_get_dt_soname
 646   (bfd *);
 647 extern void bfd_elf_set_dyn_lib_class
 648   (bfd *, enum dynamic_lib_link_class);
 649 extern int bfd_elf_get_dyn_lib_class
 650   (bfd *);
 651 extern struct bfd_link_needed_list *bfd_elf_get_runpath_list
 652   (bfd *, struct bfd_link_info *);
 653 extern bfd_boolean bfd_elf_discard_info
 654   (bfd *, struct bfd_link_info *);
 655 extern unsigned int _bfd_elf_default_action_discarded
 656   (struct bfd_section *);
 657
 658 /* Return an upper bound on the number of bytes required to store a
 659    copy of ABFD's program header table entries.  Return -1 if an error
 660    occurs; bfd_get_error will return an appropriate code.  */
 661 extern long bfd_get_elf_phdr_upper_bound
 662   (bfd *abfd);
 663
 664 /* Copy ABFD's program header table entries to *PHDRS.  The entries
 665    will be stored as an array of Elf_Internal_Phdr structures, as
 666    defined in include/elf/internal.h.  To find out how large the
 667    buffer needs to be, call bfd_get_elf_phdr_upper_bound.
 668
 669    Return the number of program header table entries read, or -1 if an
 670    error occurs; bfd_get_error will return an appropriate code.  */
 671 extern int bfd_get_elf_phdrs
 672   (bfd *abfd, void *phdrs);
 673
 674 /* Create a new BFD as if by bfd_openr.  Rather than opening a file,
 675    reconstruct an ELF file by reading the segments out of remote memory
 676    based on the ELF file header at EHDR_VMA and the ELF program headers it
 677    points to.  If not null, *LOADBASEP is filled in with the difference
 678    between the VMAs from which the segments were read, and the VMAs the
 679    file headers (and hence BFD's idea of each section's VMA) put them at.
 680
 681    The function TARGET_READ_MEMORY is called to copy LEN bytes from the
 682    remote memory at target address VMA into the local buffer at MYADDR; it
 683    should return zero on success or an `errno' code on failure.  TEMPL must
 684    be a BFD for an ELF target with the word size and byte order found in
 685    the remote memory.  */
 686 extern bfd *bfd_elf_bfd_from_remote_memory
 687   (bfd *templ, bfd_vma ehdr_vma, bfd_vma *loadbasep,
 688    int (*target_read_memory) (bfd_vma vma, bfd_byte *myaddr, int len));
 689
 690 /* Return the arch_size field of an elf bfd, or -1 if not elf.  */
 691 extern int bfd_get_arch_size
 692   (bfd *);
 693
 694 /* Return TRUE if address "naturally" sign extends, or -1 if not elf.  */
 695 extern int bfd_get_sign_extend_vma
 696   (bfd *);
 697
 698 extern struct bfd_section *_bfd_elf_tls_setup
 699   (bfd *, struct bfd_link_info *);
 700
 701 extern void _bfd_fix_excluded_sec_syms
 702   (bfd *, struct bfd_link_info *);
 703
 704 extern unsigned bfd_m68k_mach_to_features (int);
 705
 706 extern int bfd_m68k_features_to_mach (unsigned);
 707
 708 extern bfd_boolean bfd_m68k_elf32_create_embedded_relocs
 709   (bfd *, struct bfd_link_info *, struct bfd_section *, struct bfd_section *,
 710    char **);
 711
 712 extern void bfd_elf_m68k_set_target_options (struct bfd_link_info *, int);
 713
 714 extern bfd_boolean bfd_bfin_elf32_create_embedded_relocs
 715   (bfd *, struct bfd_link_info *, struct bfd_section *, struct bfd_section *,
 716    char **);
 717
 718 extern bfd_boolean bfd_cr16_elf32_create_embedded_relocs
 719   (bfd *, struct bfd_link_info *, struct bfd_section *, struct bfd_section *,
 720    char **);
 721
 722 /* SunOS shared library support routines for the linker.  */
 723
 724 extern struct bfd_link_needed_list *bfd_sunos_get_needed_list
 725   (bfd *, struct bfd_link_info *);
 726 extern bfd_boolean bfd_sunos_record_link_assignment
 727   (bfd *, struct bfd_link_info *, const char *);
 728 extern bfd_boolean bfd_sunos_size_dynamic_sections
 729   (bfd *, struct bfd_link_info *, struct bfd_section **,
 730    struct bfd_section **, struct bfd_section **);
 731
 732 /* Linux shared library support routines for the linker.  */
 733
 734 extern bfd_boolean bfd_i386linux_size_dynamic_sections
 735   (bfd *, struct bfd_link_info *);
 736 extern bfd_boolean bfd_m68klinux_size_dynamic_sections
 737   (bfd *, struct bfd_link_info *);
 738 extern bfd_boolean bfd_sparclinux_size_dynamic_sections
 739   (bfd *, struct bfd_link_info *);
 740
 741 /* mmap hacks */
 742
 743 struct _bfd_window_internal;
 744 typedef struct _bfd_window_internal bfd_window_internal;
 745
 746 typedef struct _bfd_window
 747 {
 748   /* What the user asked for.  */
 749   void *data;
 750   bfd_size_type size;
 751   /* The actual window used by BFD.  Small user-requested read-only
 752      regions sharing a page may share a single window into the object
 753      file.  Read-write versions shouldn't until I've fixed things to
 754      keep track of which portions have been claimed by the
 755      application; don't want to give the same region back when the
 756      application wants two writable copies!  */
 757   struct _bfd_window_internal *i;
 758 }
 759 bfd_window;
 760
 761 extern void bfd_init_window
 762   (bfd_window *);
 763 extern void bfd_free_window
 764   (bfd_window *);
 765 extern bfd_boolean bfd_get_file_window
 766   (bfd *, file_ptr, bfd_size_type, bfd_window *, bfd_boolean);
 767
 768 /* XCOFF support routines for the linker.  */
 769
 770 extern bfd_boolean bfd_xcoff_split_import_path
 771   (bfd *, const char *, const char **, const char **);
 772 extern bfd_boolean bfd_xcoff_set_archive_import_path
 773   (struct bfd_link_info *, bfd *, const char *);
 774 extern bfd_boolean bfd_xcoff_link_record_set
 775   (bfd *, struct bfd_link_info *, struct bfd_link_hash_entry *, bfd_size_type);
 776 extern bfd_boolean bfd_xcoff_import_symbol
 777   (bfd *, struct bfd_link_info *, struct bfd_link_hash_entry *, bfd_vma,
 778    const char *, const char *, const char *, unsigned int);
 779 extern bfd_boolean bfd_xcoff_export_symbol
 780   (bfd *, struct bfd_link_info *, struct bfd_link_hash_entry *);
 781 extern bfd_boolean bfd_xcoff_link_count_reloc
 782   (bfd *, struct bfd_link_info *, const char *);
 783 extern bfd_boolean bfd_xcoff_record_link_assignment
 784   (bfd *, struct bfd_link_info *, const char *);
 785 extern bfd_boolean bfd_xcoff_size_dynamic_sections
 786   (bfd *, struct bfd_link_info *, const char *, const char *,
 787    unsigned long, unsigned long, unsigned long, bfd_boolean,
 788    int, bfd_boolean, unsigned int, struct bfd_section **, bfd_boolean);
 789 extern bfd_boolean bfd_xcoff_link_generate_rtinit
 790   (bfd *, const char *, const char *, bfd_boolean);
 791
 792 /* XCOFF support routines for ar.  */
 793 extern bfd_boolean bfd_xcoff_ar_archive_set_magic
 794   (bfd *, char *);
 795
 796 /* Externally visible COFF routines.  */
 797
 798 #if defined(__STDC__) || defined(ALMOST_STDC)
 799 struct internal_syment;
 800 union internal_auxent;
 801 #endif
 802
 803 extern bfd_boolean bfd_coff_get_syment
 804   (bfd *, struct bfd_symbol *, struct internal_syment *);
 805
 806 extern bfd_boolean bfd_coff_get_auxent
 807   (bfd *, struct bfd_symbol *, int, union internal_auxent *);
 808
 809 extern bfd_boolean bfd_coff_set_symbol_class
 810   (bfd *, struct bfd_symbol *, unsigned int);
 811
 812 extern bfd_boolean bfd_m68k_coff_create_embedded_relocs
 813   (bfd *, struct bfd_link_info *, struct bfd_section *, struct bfd_section *, char **);
 814
 815 /* ARM VFP11 erratum workaround support.  */
 816 typedef enum
 817 {
 818   BFD_ARM_VFP11_FIX_DEFAULT,
 819   BFD_ARM_VFP11_FIX_NONE,
 820   BFD_ARM_VFP11_FIX_SCALAR,
 821   BFD_ARM_VFP11_FIX_VECTOR
 822 } bfd_arm_vfp11_fix;
 823
 824 extern void bfd_elf32_arm_init_maps
 825   (bfd *);
 826
 827 extern void bfd_elf32_arm_set_vfp11_fix
 828   (bfd *, struct bfd_link_info *);
 829
 830 extern void bfd_elf32_arm_set_cortex_a8_fix
 831   (bfd *, struct bfd_link_info *);
 832
 833 extern bfd_boolean bfd_elf32_arm_vfp11_erratum_scan
 834   (bfd *, struct bfd_link_info *);
 835
 836 extern void bfd_elf32_arm_vfp11_fix_veneer_locations
 837   (bfd *, struct bfd_link_info *);
 838
 839 /* ARM Interworking support.  Called from linker.  */
 840 extern bfd_boolean bfd_arm_allocate_interworking_sections
 841   (struct bfd_link_info *);
 842
 843 extern bfd_boolean bfd_arm_process_before_allocation
 844   (bfd *, struct bfd_link_info *, int);
 845
 846 extern bfd_boolean bfd_arm_get_bfd_for_interworking
 847   (bfd *, struct bfd_link_info *);
 848
 849 /* PE ARM Interworking support.  Called from linker.  */
 850 extern bfd_boolean bfd_arm_pe_allocate_interworking_sections
 851   (struct bfd_link_info *);
 852
 853 extern bfd_boolean bfd_arm_pe_process_before_allocation
 854   (bfd *, struct bfd_link_info *, int);
 855
 856 extern bfd_boolean bfd_arm_pe_get_bfd_for_interworking
 857   (bfd *, struct bfd_link_info *);
 858
 859 /* ELF ARM Interworking support.  Called from linker.  */
 860 extern bfd_boolean bfd_elf32_arm_allocate_interworking_sections
 861   (struct bfd_link_info *);
 862
 863 extern bfd_boolean bfd_elf32_arm_process_before_allocation
 864   (bfd *, struct bfd_link_info *);
 865
 866 void bfd_elf32_arm_set_target_relocs
 867   (bfd *, struct bfd_link_info *, int, char *, int, int, bfd_arm_vfp11_fix,
 868    int, int, int, int);
 869
 870 extern bfd_boolean bfd_elf32_arm_get_bfd_for_interworking
 871   (bfd *, struct bfd_link_info *);
 872
 873 extern bfd_boolean bfd_elf32_arm_add_glue_sections_to_bfd
 874   (bfd *, struct bfd_link_info *);
 875
 876 /* ELF ARM mapping symbol support */
 877 #define BFD_ARM_SPECIAL_SYM_TYPE_MAP    (1 << 0)
 878 #define BFD_ARM_SPECIAL_SYM_TYPE_TAG    (1 << 1)
 879 #define BFD_ARM_SPECIAL_SYM_TYPE_OTHER  (1 << 2)
 880 #define BFD_ARM_SPECIAL_SYM_TYPE_ANY    (~0)
 881 extern bfd_boolean bfd_is_arm_special_symbol_name
 882   (const char * name, int type);
 883
 884 extern void bfd_elf32_arm_set_byteswap_code (struct bfd_link_info *, int);
 885
 886 /* ARM Note section processing.  */
 887 extern bfd_boolean bfd_arm_merge_machines
 888   (bfd *, bfd *);
 889
 890 extern bfd_boolean bfd_arm_update_notes
 891   (bfd *, const char *);
 892
 893 extern unsigned int bfd_arm_get_mach_from_notes
 894   (bfd *, const char *);
 895
 896 /* ARM stub generation support.  Called from the linker.  */
 897 extern int elf32_arm_setup_section_lists
 898   (bfd *, struct bfd_link_info *);
 899 extern void elf32_arm_next_input_section
 900   (struct bfd_link_info *, struct bfd_section *);
 901 extern bfd_boolean elf32_arm_size_stubs
 902   (bfd *, bfd *, struct bfd_link_info *, bfd_signed_vma,
 903    struct bfd_section * (*) (const char *, struct bfd_section *), void (*) (void));
 904 extern bfd_boolean elf32_arm_build_stubs
 905   (struct bfd_link_info *);
 906
 907 /* ARM unwind section editing support.  */
 908 extern bfd_boolean elf32_arm_fix_exidx_coverage
 909   (struct bfd_section **, unsigned int, struct bfd_link_info *);
 910
 911 /* TI COFF load page support.  */
 912 extern void bfd_ticoff_set_section_load_page
 913   (struct bfd_section *, int);
 914
 915 extern int bfd_ticoff_get_section_load_page
 916   (struct bfd_section *);
 917
 918 /* H8/300 functions.  */
 919 extern bfd_vma bfd_h8300_pad_address
 920   (bfd *, bfd_vma);
 921
 922 /* IA64 Itanium code generation.  Called from linker.  */
 923 extern void bfd_elf32_ia64_after_parse
 924   (int);
 925
 926 extern void bfd_elf64_ia64_after_parse
 927   (int);
 928
 929 /* This structure is used for a comdat section, as in PE.  A comdat
 930    section is associated with a particular symbol.  When the linker
 931    sees a comdat section, it keeps only one of the sections with a
 932    given name and associated with a given symbol.  */
 933
 934 struct coff_comdat_info
 935 {
 936   /* The name of the symbol associated with a comdat section.  */
 937   const char *name;
 938
 939   /* The local symbol table index of the symbol associated with a
 940      comdat section.  This is only meaningful to the object file format
 941      specific code; it is not an index into the list returned by
 942      bfd_canonicalize_symtab.  */
 943   long symbol;
 944 };
 945
 946 extern struct coff_comdat_info *bfd_coff_get_comdat_section
 947   (bfd *, struct bfd_section *);
 948