1 /* Generic BFD library interface and support routines.
2 Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
4 Free Software Foundation, Inc.
5 Written by Cygnus Support.
7 This file is part of BFD, the Binary File Descriptor library.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 2 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program; if not, write to the Free Software
21 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
27 A BFD has type <<bfd>>; objects of this type are the
28 cornerstone of any application using BFD. Using BFD
29 consists of making references though the BFD and to data in the BFD.
31 Here is the structure that defines the type <<bfd>>. It
32 contains the major data about the file and pointers
33 to the rest of the data.
39 . {* A unique identifier of the BFD *}
42 . {* The filename the application opened the BFD with. *}
43 . const char *filename;
45 . {* A pointer to the target jump table. *}
46 . const struct bfd_target *xvec;
48 . {* To avoid dragging too many header files into every file that
49 . includes `<<bfd.h>>', IOSTREAM has been declared as a "char *",
50 . and MTIME as a "long". Their correct types, to which they
51 . are cast when used, are "FILE *" and "time_t". The iostream
52 . is the result of an fopen on the filename. However, if the
53 . BFD_IN_MEMORY flag is set, then iostream is actually a pointer
54 . to a bfd_in_memory struct. *}
57 . {* Is the file descriptor being cached? That is, can it be closed as
58 . needed, and re-opened when accessed later? *}
59 . bfd_boolean cacheable;
61 . {* Marks whether there was a default target specified when the
62 . BFD was opened. This is used to select which matching algorithm
63 . to use to choose the back end. *}
64 . bfd_boolean target_defaulted;
66 . {* The caching routines use these to maintain a
67 . least-recently-used list of BFDs. *}
68 . struct bfd *lru_prev, *lru_next;
70 . {* When a file is closed by the caching routines, BFD retains
71 . state information on the file here... *}
74 . {* ... and here: (``once'' means at least once). *}
75 . bfd_boolean opened_once;
77 . {* Set if we have a locally maintained mtime value, rather than
78 . getting it from the file each time. *}
79 . bfd_boolean mtime_set;
81 . {* File modified time, if mtime_set is TRUE. *}
84 . {* Reserved for an unimplemented file locking extension. *}
87 . {* The format which belongs to the BFD. (object, core, etc.) *}
90 . {* The direction with which the BFD was opened. *}
95 . write_direction = 2,
100 . {* Format_specific flags. *}
103 . {* Currently my_archive is tested before adding origin to
104 . anything. I believe that this can become always an add of
105 . origin, with origin set to 0 for non archive files. *}
108 . {* Remember when output has begun, to stop strange things
110 . bfd_boolean output_has_begun;
112 . {* A hash table for section names. *}
113 . struct bfd_hash_table section_htab;
115 . {* Pointer to linked list of sections. *}
116 . struct bfd_section *sections;
118 . {* The place where we add to the section list. *}
119 . struct bfd_section **section_tail;
121 . {* The number of sections. *}
122 . unsigned int section_count;
124 . {* Stuff only useful for object files:
125 . The start address. *}
126 . bfd_vma start_address;
128 . {* Used for input and output. *}
129 . unsigned int symcount;
131 . {* Symbol table for output BFD (with symcount entries). *}
132 . struct bfd_symbol **outsymbols;
134 . {* Used for slurped dynamic symbol tables. *}
135 . unsigned int dynsymcount;
137 . {* Pointer to structure which contains architecture information. *}
138 . const struct bfd_arch_info *arch_info;
140 . {* Stuff only useful for archives. *}
142 . struct bfd *my_archive; {* The containing archive BFD. *}
143 . struct bfd *next; {* The next BFD in the archive. *}
144 . struct bfd *archive_head; {* The first BFD in the archive. *}
145 . bfd_boolean has_armap;
147 . {* A chain of BFD structures involved in a link. *}
148 . struct bfd *link_next;
150 . {* A field used by _bfd_generic_link_add_archive_symbols. This will
151 . be used only for archive elements. *}
154 . {* Used by the back end to hold private data. *}
157 . struct aout_data_struct *aout_data;
158 . struct artdata *aout_ar_data;
159 . struct _oasys_data *oasys_obj_data;
160 . struct _oasys_ar_data *oasys_ar_data;
161 . struct coff_tdata *coff_obj_data;
162 . struct pe_tdata *pe_obj_data;
163 . struct xcoff_tdata *xcoff_obj_data;
164 . struct ecoff_tdata *ecoff_obj_data;
165 . struct ieee_data_struct *ieee_data;
166 . struct ieee_ar_data_struct *ieee_ar_data;
167 . struct srec_data_struct *srec_data;
168 . struct ihex_data_struct *ihex_data;
169 . struct tekhex_data_struct *tekhex_data;
170 . struct elf_obj_tdata *elf_obj_data;
171 . struct nlm_obj_tdata *nlm_obj_data;
172 . struct bout_data_struct *bout_data;
173 . struct mmo_data_struct *mmo_data;
174 . struct sun_core_struct *sun_core_data;
175 . struct sco5_core_struct *sco5_core_data;
176 . struct trad_core_struct *trad_core_data;
177 . struct som_data_struct *som_data;
178 . struct hpux_core_struct *hpux_core_data;
179 . struct hppabsd_core_struct *hppabsd_core_data;
180 . struct sgi_core_struct *sgi_core_data;
181 . struct lynx_core_struct *lynx_core_data;
182 . struct osf_core_struct *osf_core_data;
183 . struct cisco_core_struct *cisco_core_data;
184 . struct versados_data_struct *versados_data;
185 . struct netbsd_core_struct *netbsd_core_data;
186 . struct mach_o_data_struct *mach_o_data;
187 . struct mach_o_fat_data_struct *mach_o_fat_data;
188 . struct bfd_pef_data_struct *pef_data;
189 . struct bfd_pef_xlib_data_struct *pef_xlib_data;
190 . struct bfd_sym_data_struct *sym_data;
195 . {* Used by the application to hold private data. *}
198 . {* Where all the allocated stuff under this BFD goes. This is a
199 . struct objalloc *, but we use void * to avoid requiring the inclusion
210 #include "libiberty.h"
211 #include "safe-ctype.h"
214 #include "coff/internal.h"
215 #include "coff/sym.h"
217 #include "libecoff.h"
221 /* provide storage for subsystem, stack and heap data which may have been
222 passed in on the command line. Ld puts this data into a bfd_link_info
223 struct which ultimately gets passed in to the bfd. When it arrives, copy
224 it to the following struct so that the data will be available in coffcode.h
225 where it is needed. The typedef's used are defined in bfd.h */
231 Most BFD functions return nonzero on success (check their
232 individual documentation for precise semantics). On an error,
233 they call <<bfd_set_error>> to set an error condition that callers
234 can check by calling <<bfd_get_error>>.
235 If that returns <<bfd_error_system_call>>, then check
238 The easiest way to report a BFD error to the user is to
242 Type <<bfd_error_type>>
244 The values returned by <<bfd_get_error>> are defined by the
245 enumerated type <<bfd_error_type>>.
249 .typedef enum bfd_error
251 . bfd_error_no_error = 0,
252 . bfd_error_system_call,
253 . bfd_error_invalid_target,
254 . bfd_error_wrong_format,
255 . bfd_error_wrong_object_format,
256 . bfd_error_invalid_operation,
257 . bfd_error_no_memory,
258 . bfd_error_no_symbols,
259 . bfd_error_no_armap,
260 . bfd_error_no_more_archived_files,
261 . bfd_error_malformed_archive,
262 . bfd_error_file_not_recognized,
263 . bfd_error_file_ambiguously_recognized,
264 . bfd_error_no_contents,
265 . bfd_error_nonrepresentable_section,
266 . bfd_error_no_debug_section,
267 . bfd_error_bad_value,
268 . bfd_error_file_truncated,
269 . bfd_error_file_too_big,
270 . bfd_error_invalid_error_code
276 static bfd_error_type bfd_error = bfd_error_no_error;
278 const char *const bfd_errmsgs[] =
281 N_("System call error"),
282 N_("Invalid bfd target"),
283 N_("File in wrong format"),
284 N_("Archive object file in wrong format"),
285 N_("Invalid operation"),
286 N_("Memory exhausted"),
288 N_("Archive has no index; run ranlib to add one"),
289 N_("No more archived files"),
290 N_("Malformed archive"),
291 N_("File format not recognized"),
292 N_("File format is ambiguous"),
293 N_("Section has no contents"),
294 N_("Nonrepresentable section on output"),
295 N_("Symbol needs debug section which does not exist"),
297 N_("File truncated"),
299 N_("#<Invalid error code>")
307 bfd_error_type bfd_get_error (void);
310 Return the current BFD error condition.
324 void bfd_set_error (bfd_error_type error_tag);
327 Set the BFD error condition to be @var{error_tag}.
331 bfd_set_error (bfd_error_type error_tag)
333 bfd_error = error_tag;
341 const char *bfd_errmsg (bfd_error_type error_tag);
344 Return a string describing the error @var{error_tag}, or
345 the system error if @var{error_tag} is <<bfd_error_system_call>>.
349 bfd_errmsg (bfd_error_type error_tag)
354 if (error_tag == bfd_error_system_call)
355 return xstrerror (errno);
357 if (error_tag > bfd_error_invalid_error_code)
358 error_tag = bfd_error_invalid_error_code; /* sanity check */
360 return _(bfd_errmsgs [error_tag]);
368 void bfd_perror (const char *message);
371 Print to the standard error stream a string describing the
372 last BFD error that occurred, or the last system error if
373 the last BFD error was a system call failure. If @var{message}
374 is non-NULL and non-empty, the error string printed is preceded
375 by @var{message}, a colon, and a space. It is followed by a newline.
379 bfd_perror (const char *message)
381 if (bfd_get_error () == bfd_error_system_call)
382 /* Must be a system error then. */
383 perror ((char *) message);
386 if (message == NULL || *message == '\0')
387 fprintf (stderr, "%s\n", bfd_errmsg (bfd_get_error ()));
389 fprintf (stderr, "%s: %s\n", message, bfd_errmsg (bfd_get_error ()));
397 Some BFD functions want to print messages describing the
398 problem. They call a BFD error handler function. This
399 function may be overridden by the program.
401 The BFD error handler acts like printf.
405 .typedef void (*bfd_error_handler_type) (const char *, ...);
409 /* The program name used when printing BFD error messages. */
411 static const char *_bfd_error_program_name;
413 /* This is the default routine to handle BFD error messages. */
416 _bfd_default_error_handler (const char *s, ...)
420 if (_bfd_error_program_name != NULL)
421 fprintf (stderr, "%s: ", _bfd_error_program_name);
423 fprintf (stderr, "BFD: ");
426 vfprintf (stderr, s, p);
429 fprintf (stderr, "\n");
432 /* This is a function pointer to the routine which should handle BFD
433 error messages. It is called when a BFD routine encounters an
434 error for which it wants to print a message. Going through a
435 function pointer permits a program linked against BFD to intercept
436 the messages and deal with them itself. */
438 bfd_error_handler_type _bfd_error_handler = _bfd_default_error_handler;
442 bfd_set_error_handler
445 bfd_error_handler_type bfd_set_error_handler (bfd_error_handler_type);
448 Set the BFD error handler function. Returns the previous
452 bfd_error_handler_type
453 bfd_set_error_handler (bfd_error_handler_type pnew)
455 bfd_error_handler_type pold;
457 pold = _bfd_error_handler;
458 _bfd_error_handler = pnew;
464 bfd_set_error_program_name
467 void bfd_set_error_program_name (const char *);
470 Set the program name to use when printing a BFD error. This
471 is printed before the error message followed by a colon and
472 space. The string must not be changed after it is passed to
477 bfd_set_error_program_name (const char *name)
479 _bfd_error_program_name = name;
484 bfd_get_error_handler
487 bfd_error_handler_type bfd_get_error_handler (void);
490 Return the BFD error handler function.
493 bfd_error_handler_type
494 bfd_get_error_handler (void)
496 return _bfd_error_handler;
504 const char *bfd_archive_filename (bfd *);
507 For a BFD that is a component of an archive, returns a string
508 with both the archive name and file name. For other BFDs, just
509 returns the file name.
513 bfd_archive_filename (bfd *abfd)
516 return _("<unknown>");
518 if (abfd->my_archive)
520 static size_t curr = 0;
524 needed = (strlen (bfd_get_filename (abfd->my_archive))
525 + strlen (bfd_get_filename (abfd)) + 3);
530 curr = needed + (needed >> 1);
531 buf = bfd_malloc (curr);
532 /* If we can't malloc, fail safe by returning just the file
533 name. This function is only used when building error
538 return bfd_get_filename (abfd);
541 sprintf (buf, "%s(%s)", bfd_get_filename (abfd->my_archive),
542 bfd_get_filename (abfd));
546 return bfd_get_filename (abfd);
556 bfd_get_reloc_upper_bound
559 long bfd_get_reloc_upper_bound (bfd *abfd, asection *sect);
562 Return the number of bytes required to store the
563 relocation information associated with section @var{sect}
564 attached to bfd @var{abfd}. If an error occurs, return -1.
569 bfd_get_reloc_upper_bound (bfd *abfd, sec_ptr asect)
571 if (abfd->format != bfd_object)
573 bfd_set_error (bfd_error_invalid_operation);
577 return BFD_SEND (abfd, _get_reloc_upper_bound, (abfd, asect));
582 bfd_canonicalize_reloc
585 long bfd_canonicalize_reloc
586 (bfd *abfd, asection *sec, arelent **loc, asymbol **syms);
589 Call the back end associated with the open BFD
590 @var{abfd} and translate the external form of the relocation
591 information attached to @var{sec} into the internal canonical
592 form. Place the table into memory at @var{loc}, which has
593 been preallocated, usually by a call to
594 <<bfd_get_reloc_upper_bound>>. Returns the number of relocs, or
597 The @var{syms} table is also needed for horrible internal magic
602 bfd_canonicalize_reloc (bfd *abfd,
607 if (abfd->format != bfd_object)
609 bfd_set_error (bfd_error_invalid_operation);
613 return BFD_SEND (abfd, _bfd_canonicalize_reloc,
614 (abfd, asect, location, symbols));
623 (bfd *abfd, asection *sec, arelent **rel, unsigned int count);
626 Set the relocation pointer and count within
627 section @var{sec} to the values @var{rel} and @var{count}.
628 The argument @var{abfd} is ignored.
633 bfd_set_reloc (bfd *ignore_abfd ATTRIBUTE_UNUSED,
638 asect->orelocation = location;
639 asect->reloc_count = count;
647 bfd_boolean bfd_set_file_flags (bfd *abfd, flagword flags);
650 Set the flag word in the BFD @var{abfd} to the value @var{flags}.
653 o <<bfd_error_wrong_format>> - The target bfd was not of object format.
654 o <<bfd_error_invalid_operation>> - The target bfd was open for reading.
655 o <<bfd_error_invalid_operation>> -
656 The flag word contained a bit which was not applicable to the
657 type of file. E.g., an attempt was made to set the <<D_PAGED>> bit
658 on a BFD format which does not support demand paging.
663 bfd_set_file_flags (bfd *abfd, flagword flags)
665 if (abfd->format != bfd_object)
667 bfd_set_error (bfd_error_wrong_format);
671 if (bfd_read_p (abfd))
673 bfd_set_error (bfd_error_invalid_operation);
677 bfd_get_file_flags (abfd) = flags;
678 if ((flags & bfd_applicable_file_flags (abfd)) != flags)
680 bfd_set_error (bfd_error_invalid_operation);
688 bfd_assert (const char *file, int line)
690 (*_bfd_error_handler) (_("BFD %s assertion fail %s:%d"),
691 BFD_VERSION_STRING, file, line);
694 /* A more or less friendly abort message. In libbfd.h abort is
695 defined to call this function. */
698 #define EXIT_FAILURE 1
702 _bfd_abort (const char *file, int line, const char *fn)
705 (*_bfd_error_handler)
706 (_("BFD %s internal error, aborting at %s line %d in %s\n"),
707 BFD_VERSION_STRING, file, line, fn);
709 (*_bfd_error_handler)
710 (_("BFD %s internal error, aborting at %s line %d\n"),
711 BFD_VERSION_STRING, file, line);
712 (*_bfd_error_handler) (_("Please report this bug.\n"));
713 xexit (EXIT_FAILURE);
721 int bfd_get_arch_size (bfd *abfd);
724 Returns the architecture address size, in bits, as determined
725 by the object file's format. For ELF, this information is
726 included in the header.
729 Returns the arch size in bits if known, <<-1>> otherwise.
733 bfd_get_arch_size (bfd *abfd)
735 if (abfd->xvec->flavour == bfd_target_elf_flavour)
736 return get_elf_backend_data (abfd)->s->arch_size;
743 bfd_get_sign_extend_vma
746 int bfd_get_sign_extend_vma (bfd *abfd);
749 Indicates if the target architecture "naturally" sign extends
750 an address. Some architectures implicitly sign extend address
751 values when they are converted to types larger than the size
752 of an address. For instance, bfd_get_start_address() will
753 return an address sign extended to fill a bfd_vma when this is
757 Returns <<1>> if the target architecture is known to sign
758 extend addresses, <<0>> if the target architecture is known to
759 not sign extend addresses, and <<-1>> otherwise.
763 bfd_get_sign_extend_vma (bfd *abfd)
767 if (bfd_get_flavour (abfd) == bfd_target_elf_flavour)
768 return get_elf_backend_data (abfd)->sign_extend_vma;
770 name = bfd_get_target (abfd);
772 /* Return a proper value for DJGPP COFF (an x86 COFF variant).
773 This function is required for DWARF2 support, but there is
774 no place to store this information in the COFF back end.
775 Should enough other COFF targets add support for DWARF2,
776 a place will have to be found. Until then, this hack will do. */
777 if (strncmp (name, "coff-go32", sizeof ("coff-go32") - 1) == 0)
780 bfd_set_error (bfd_error_wrong_format);
786 bfd_set_start_address
789 bfd_boolean bfd_set_start_address (bfd *abfd, bfd_vma vma);
792 Make @var{vma} the entry point of output BFD @var{abfd}.
795 Returns <<TRUE>> on success, <<FALSE>> otherwise.
799 bfd_set_start_address (bfd *abfd, bfd_vma vma)
801 abfd->start_address = vma;
810 unsigned int bfd_get_gp_size (bfd *abfd);
813 Return the maximum size of objects to be optimized using the GP
814 register under MIPS ECOFF. This is typically set by the <<-G>>
815 argument to the compiler, assembler or linker.
819 bfd_get_gp_size (bfd *abfd)
821 if (abfd->format == bfd_object)
823 if (abfd->xvec->flavour == bfd_target_ecoff_flavour)
824 return ecoff_data (abfd)->gp_size;
825 else if (abfd->xvec->flavour == bfd_target_elf_flavour)
826 return elf_gp_size (abfd);
836 void bfd_set_gp_size (bfd *abfd, unsigned int i);
839 Set the maximum size of objects to be optimized using the GP
840 register under ECOFF or MIPS ELF. This is typically set by
841 the <<-G>> argument to the compiler, assembler or linker.
845 bfd_set_gp_size (bfd *abfd, unsigned int i)
847 /* Don't try to set GP size on an archive or core file! */
848 if (abfd->format != bfd_object)
851 if (abfd->xvec->flavour == bfd_target_ecoff_flavour)
852 ecoff_data (abfd)->gp_size = i;
853 else if (abfd->xvec->flavour == bfd_target_elf_flavour)
854 elf_gp_size (abfd) = i;
857 /* Get the GP value. This is an internal function used by some of the
858 relocation special_function routines on targets which support a GP
862 _bfd_get_gp_value (bfd *abfd)
866 if (abfd->format != bfd_object)
869 if (abfd->xvec->flavour == bfd_target_ecoff_flavour)
870 return ecoff_data (abfd)->gp;
871 else if (abfd->xvec->flavour == bfd_target_elf_flavour)
872 return elf_gp (abfd);
877 /* Set the GP value. */
880 _bfd_set_gp_value (bfd *abfd, bfd_vma v)
884 if (abfd->format != bfd_object)
887 if (abfd->xvec->flavour == bfd_target_ecoff_flavour)
888 ecoff_data (abfd)->gp = v;
889 else if (abfd->xvec->flavour == bfd_target_elf_flavour)
898 bfd_vma bfd_scan_vma (const char *string, const char **end, int base);
901 Convert, like <<strtoul>>, a numerical expression
902 @var{string} into a <<bfd_vma>> integer, and return that integer.
903 (Though without as many bells and whistles as <<strtoul>>.)
904 The expression is assumed to be unsigned (i.e., positive).
905 If given a @var{base}, it is used as the base for conversion.
906 A base of 0 causes the function to interpret the string
907 in hex if a leading "0x" or "0X" is found, otherwise
908 in octal if a leading zero is found, otherwise in decimal.
910 If the value would overflow, the maximum <<bfd_vma>> value is
915 bfd_scan_vma (const char *string, const char **end, int base)
922 /* Let the host do it if possible. */
923 if (sizeof (bfd_vma) <= sizeof (unsigned long))
924 return strtoul (string, (char **) end, base);
927 if (sizeof (bfd_vma) <= sizeof (unsigned long long))
928 return strtoull (string, (char **) end, base);
933 if (string[0] == '0')
935 if ((string[1] == 'x') || (string[1] == 'X'))
942 if ((base < 2) || (base > 36))
947 && (string[1] == 'x' || string[1] == 'X')
948 && ISXDIGIT (string[2]))
953 cutoff = (~ (bfd_vma) 0) / (bfd_vma) base;
954 cutlim = (~ (bfd_vma) 0) % (bfd_vma) base;
964 else if (ISALPHA (digit))
965 digit = TOUPPER (digit) - 'A' + 10;
968 if (digit >= (unsigned int) base)
970 if (value > cutoff || (value == cutoff && digit > cutlim))
972 value = value * base + digit;
977 value = ~ (bfd_vma) 0;
987 bfd_copy_private_bfd_data
990 bfd_boolean bfd_copy_private_bfd_data (bfd *ibfd, bfd *obfd);
993 Copy private BFD information from the BFD @var{ibfd} to the
994 the BFD @var{obfd}. Return <<TRUE>> on success, <<FALSE>> on error.
995 Possible error returns are:
997 o <<bfd_error_no_memory>> -
998 Not enough memory exists to create private data for @var{obfd}.
1000 .#define bfd_copy_private_bfd_data(ibfd, obfd) \
1001 . BFD_SEND (obfd, _bfd_copy_private_bfd_data, \
1008 bfd_merge_private_bfd_data
1011 bfd_boolean bfd_merge_private_bfd_data (bfd *ibfd, bfd *obfd);
1014 Merge private BFD information from the BFD @var{ibfd} to the
1015 the output file BFD @var{obfd} when linking. Return <<TRUE>>
1016 on success, <<FALSE>> on error. Possible error returns are:
1018 o <<bfd_error_no_memory>> -
1019 Not enough memory exists to create private data for @var{obfd}.
1021 .#define bfd_merge_private_bfd_data(ibfd, obfd) \
1022 . BFD_SEND (obfd, _bfd_merge_private_bfd_data, \
1029 bfd_set_private_flags
1032 bfd_boolean bfd_set_private_flags (bfd *abfd, flagword flags);
1035 Set private BFD flag information in the BFD @var{abfd}.
1036 Return <<TRUE>> on success, <<FALSE>> on error. Possible error
1039 o <<bfd_error_no_memory>> -
1040 Not enough memory exists to create private data for @var{obfd}.
1042 .#define bfd_set_private_flags(abfd, flags) \
1043 . BFD_SEND (abfd, _bfd_set_private_flags, (abfd, flags))
1052 The following functions exist but have not yet been documented.
1054 .#define bfd_sizeof_headers(abfd, reloc) \
1055 . BFD_SEND (abfd, _bfd_sizeof_headers, (abfd, reloc))
1057 .#define bfd_find_nearest_line(abfd, sec, syms, off, file, func, line) \
1058 . BFD_SEND (abfd, _bfd_find_nearest_line, \
1059 . (abfd, sec, syms, off, file, func, line))
1061 .#define bfd_debug_info_start(abfd) \
1062 . BFD_SEND (abfd, _bfd_debug_info_start, (abfd))
1064 .#define bfd_debug_info_end(abfd) \
1065 . BFD_SEND (abfd, _bfd_debug_info_end, (abfd))
1067 .#define bfd_debug_info_accumulate(abfd, section) \
1068 . BFD_SEND (abfd, _bfd_debug_info_accumulate, (abfd, section))
1070 .#define bfd_stat_arch_elt(abfd, stat) \
1071 . BFD_SEND (abfd, _bfd_stat_arch_elt,(abfd, stat))
1073 .#define bfd_update_armap_timestamp(abfd) \
1074 . BFD_SEND (abfd, _bfd_update_armap_timestamp, (abfd))
1076 .#define bfd_set_arch_mach(abfd, arch, mach)\
1077 . BFD_SEND ( abfd, _bfd_set_arch_mach, (abfd, arch, mach))
1079 .#define bfd_relax_section(abfd, section, link_info, again) \
1080 . BFD_SEND (abfd, _bfd_relax_section, (abfd, section, link_info, again))
1082 .#define bfd_gc_sections(abfd, link_info) \
1083 . BFD_SEND (abfd, _bfd_gc_sections, (abfd, link_info))
1085 .#define bfd_merge_sections(abfd, link_info) \
1086 . BFD_SEND (abfd, _bfd_merge_sections, (abfd, link_info))
1088 .#define bfd_discard_group(abfd, sec) \
1089 . BFD_SEND (abfd, _bfd_discard_group, (abfd, sec))
1091 .#define bfd_link_hash_table_create(abfd) \
1092 . BFD_SEND (abfd, _bfd_link_hash_table_create, (abfd))
1094 .#define bfd_link_hash_table_free(abfd, hash) \
1095 . BFD_SEND (abfd, _bfd_link_hash_table_free, (hash))
1097 .#define bfd_link_add_symbols(abfd, info) \
1098 . BFD_SEND (abfd, _bfd_link_add_symbols, (abfd, info))
1100 .#define bfd_link_just_syms(sec, info) \
1101 . BFD_SEND (abfd, _bfd_link_just_syms, (sec, info))
1103 .#define bfd_final_link(abfd, info) \
1104 . BFD_SEND (abfd, _bfd_final_link, (abfd, info))
1106 .#define bfd_free_cached_info(abfd) \
1107 . BFD_SEND (abfd, _bfd_free_cached_info, (abfd))
1109 .#define bfd_get_dynamic_symtab_upper_bound(abfd) \
1110 . BFD_SEND (abfd, _bfd_get_dynamic_symtab_upper_bound, (abfd))
1112 .#define bfd_print_private_bfd_data(abfd, file)\
1113 . BFD_SEND (abfd, _bfd_print_private_bfd_data, (abfd, file))
1115 .#define bfd_canonicalize_dynamic_symtab(abfd, asymbols) \
1116 . BFD_SEND (abfd, _bfd_canonicalize_dynamic_symtab, (abfd, asymbols))
1118 .#define bfd_get_dynamic_reloc_upper_bound(abfd) \
1119 . BFD_SEND (abfd, _bfd_get_dynamic_reloc_upper_bound, (abfd))
1121 .#define bfd_canonicalize_dynamic_reloc(abfd, arels, asyms) \
1122 . BFD_SEND (abfd, _bfd_canonicalize_dynamic_reloc, (abfd, arels, asyms))
1124 .extern bfd_byte *bfd_get_relocated_section_contents
1125 . (bfd *, struct bfd_link_info *, struct bfd_link_order *, bfd_byte *,
1126 . bfd_boolean, asymbol **);
1132 bfd_get_relocated_section_contents (bfd *abfd,
1133 struct bfd_link_info *link_info,
1134 struct bfd_link_order *link_order,
1136 bfd_boolean relocatable,
1140 bfd_byte *(*fn) (bfd *, struct bfd_link_info *, struct bfd_link_order *,
1141 bfd_byte *, bfd_boolean, asymbol **);
1143 if (link_order->type == bfd_indirect_link_order)
1145 abfd2 = link_order->u.indirect.section->owner;
1152 fn = abfd2->xvec->_bfd_get_relocated_section_contents;
1154 return (*fn) (abfd, link_info, link_order, data, relocatable, symbols);
1157 /* Record information about an ELF program header. */
1160 bfd_record_phdr (bfd *abfd,
1162 bfd_boolean flags_valid,
1164 bfd_boolean at_valid,
1166 bfd_boolean includes_filehdr,
1167 bfd_boolean includes_phdrs,
1171 struct elf_segment_map *m, **pm;
1174 if (bfd_get_flavour (abfd) != bfd_target_elf_flavour)
1177 amt = sizeof (struct elf_segment_map);
1178 amt += ((bfd_size_type) count - 1) * sizeof (asection *);
1179 m = bfd_alloc (abfd, amt);
1187 m->p_flags_valid = flags_valid;
1188 m->p_paddr_valid = at_valid;
1189 m->includes_filehdr = includes_filehdr;
1190 m->includes_phdrs = includes_phdrs;
1193 memcpy (m->sections, secs, count * sizeof (asection *));
1195 for (pm = &elf_tdata (abfd)->segment_map; *pm != NULL; pm = &(*pm)->next)
1203 bfd_sprintf_vma (bfd *abfd, char *buf, bfd_vma value)
1205 if (bfd_get_flavour (abfd) == bfd_target_elf_flavour)
1206 get_elf_backend_data (abfd)->elf_backend_sprintf_vma (abfd, buf, value);
1208 sprintf_vma (buf, value);
1212 bfd_fprintf_vma (bfd *abfd, void *stream, bfd_vma value)
1214 if (bfd_get_flavour (abfd) == bfd_target_elf_flavour)
1215 get_elf_backend_data (abfd)->elf_backend_fprintf_vma (abfd, stream, value);
1217 fprintf_vma ((FILE *) stream, value);
1225 bfd_boolean bfd_alt_mach_code (bfd *abfd, int alternative);
1229 When more than one machine code number is available for the
1230 same machine type, this function can be used to switch between
1231 the preferred one (alternative == 0) and any others. Currently,
1232 only ELF supports this feature, with up to two alternate
1237 bfd_alt_mach_code (bfd *abfd, int alternative)
1239 if (bfd_get_flavour (abfd) == bfd_target_elf_flavour)
1243 switch (alternative)
1246 code = get_elf_backend_data (abfd)->elf_machine_code;
1250 code = get_elf_backend_data (abfd)->elf_machine_alt1;
1256 code = get_elf_backend_data (abfd)->elf_machine_alt2;
1265 elf_elfheader (abfd)->e_machine = code;
1276 .struct bfd_preserve
1281 . const struct bfd_arch_info *arch_info;
1282 . struct bfd_section *sections;
1283 . struct bfd_section **section_tail;
1284 . unsigned int section_count;
1285 . struct bfd_hash_table section_htab;
1295 bfd_boolean bfd_preserve_save (bfd *, struct bfd_preserve *);
1298 When testing an object for compatibility with a particular
1299 target back-end, the back-end object_p function needs to set
1300 up certain fields in the bfd on successfully recognizing the
1301 object. This typically happens in a piecemeal fashion, with
1302 failures possible at many points. On failure, the bfd is
1303 supposed to be restored to its initial state, which is
1304 virtually impossible. However, restoring a subset of the bfd
1305 state works in practice. This function stores the subset and
1306 reinitializes the bfd.
1311 bfd_preserve_save (bfd *abfd, struct bfd_preserve *preserve)
1313 preserve->tdata = abfd->tdata.any;
1314 preserve->arch_info = abfd->arch_info;
1315 preserve->flags = abfd->flags;
1316 preserve->sections = abfd->sections;
1317 preserve->section_tail = abfd->section_tail;
1318 preserve->section_count = abfd->section_count;
1319 preserve->section_htab = abfd->section_htab;
1321 if (! bfd_hash_table_init (&abfd->section_htab, bfd_section_hash_newfunc))
1324 abfd->tdata.any = NULL;
1325 abfd->arch_info = &bfd_default_arch_struct;
1326 abfd->flags &= BFD_IN_MEMORY;
1327 abfd->sections = NULL;
1328 abfd->section_tail = &abfd->sections;
1329 abfd->section_count = 0;
1336 bfd_preserve_restore
1339 void bfd_preserve_restore (bfd *, struct bfd_preserve *);
1342 This function restores bfd state saved by bfd_preserve_save.
1343 If MARKER is non-NULL in struct bfd_preserve then that block
1344 and all subsequently bfd_alloc'd memory is freed.
1349 bfd_preserve_restore (bfd *abfd, struct bfd_preserve *preserve)
1351 bfd_hash_table_free (&abfd->section_htab);
1353 abfd->tdata.any = preserve->tdata;
1354 abfd->arch_info = preserve->arch_info;
1355 abfd->flags = preserve->flags;
1356 abfd->section_htab = preserve->section_htab;
1357 abfd->sections = preserve->sections;
1358 abfd->section_tail = preserve->section_tail;
1359 abfd->section_count = preserve->section_count;
1361 /* bfd_release frees all memory more recently bfd_alloc'd than
1362 its arg, as well as its arg. */
1363 if (preserve->marker != NULL)
1365 bfd_release (abfd, preserve->marker);
1366 preserve->marker = NULL;
1375 void bfd_preserve_finish (bfd *, struct bfd_preserve *);
1378 This function should be called when the bfd state saved by
1379 bfd_preserve_save is no longer needed. ie. when the back-end
1380 object_p function returns with success.
1385 bfd_preserve_finish (bfd *abfd ATTRIBUTE_UNUSED, struct bfd_preserve *preserve)
1387 /* It would be nice to be able to free more memory here, eg. old
1388 tdata, but that's not possible since these blocks are sitting
1389 inside bfd_alloc'd memory. The section hash is on a separate
1391 bfd_hash_table_free (&preserve->section_htab);