1 /* Generic BFD library interface and support routines.
2 Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
3 2000, 2001, 2002, 2003, 2004
4 Free Software Foundation, Inc.
5 Written by Cygnus Support.
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 . {* The IOSTREAM, and corresponding IO vector that provide access
49 . to the file backing the BFD. *}
51 . const struct bfd_iovec *iovec;
53 . {* Is the file descriptor being cached? That is, can it be closed as
54 . needed, and re-opened when accessed later? *}
55 . bfd_boolean cacheable;
57 . {* Marks whether there was a default target specified when the
58 . BFD was opened. This is used to select which matching algorithm
59 . to use to choose the back end. *}
60 . bfd_boolean target_defaulted;
62 . {* The caching routines use these to maintain a
63 . least-recently-used list of BFDs. *}
64 . struct bfd *lru_prev, *lru_next;
66 . {* When a file is closed by the caching routines, BFD retains
67 . state information on the file here... *}
70 . {* ... and here: (``once'' means at least once). *}
71 . bfd_boolean opened_once;
73 . {* Set if we have a locally maintained mtime value, rather than
74 . getting it from the file each time. *}
75 . bfd_boolean mtime_set;
77 . {* File modified time, if mtime_set is TRUE. *}
80 . {* Reserved for an unimplemented file locking extension. *}
83 . {* The format which belongs to the BFD. (object, core, etc.) *}
86 . {* The direction with which the BFD was opened. *}
91 . write_direction = 2,
96 . {* Format_specific flags. *}
99 . {* Currently my_archive is tested before adding origin to
100 . anything. I believe that this can become always an add of
101 . origin, with origin set to 0 for non archive files. *}
104 . {* Remember when output has begun, to stop strange things
106 . bfd_boolean output_has_begun;
108 . {* A hash table for section names. *}
109 . struct bfd_hash_table section_htab;
111 . {* Pointer to linked list of sections. *}
112 . struct bfd_section *sections;
114 . {* The place where we add to the section list. *}
115 . struct bfd_section **section_tail;
117 . {* The number of sections. *}
118 . unsigned int section_count;
120 . {* Stuff only useful for object files:
121 . The start address. *}
122 . bfd_vma start_address;
124 . {* Used for input and output. *}
125 . unsigned int symcount;
127 . {* Symbol table for output BFD (with symcount entries). *}
128 . struct bfd_symbol **outsymbols;
130 . {* Used for slurped dynamic symbol tables. *}
131 . unsigned int dynsymcount;
133 . {* Pointer to structure which contains architecture information. *}
134 . const struct bfd_arch_info *arch_info;
136 . {* Stuff only useful for archives. *}
138 . struct bfd *my_archive; {* The containing archive BFD. *}
139 . struct bfd *next; {* The next BFD in the archive. *}
140 . struct bfd *archive_head; {* The first BFD in the archive. *}
141 . bfd_boolean has_armap;
143 . {* A chain of BFD structures involved in a link. *}
144 . struct bfd *link_next;
146 . {* A field used by _bfd_generic_link_add_archive_symbols. This will
147 . be used only for archive elements. *}
150 . {* Used by the back end to hold private data. *}
153 . struct aout_data_struct *aout_data;
154 . struct artdata *aout_ar_data;
155 . struct _oasys_data *oasys_obj_data;
156 . struct _oasys_ar_data *oasys_ar_data;
157 . struct coff_tdata *coff_obj_data;
158 . struct pe_tdata *pe_obj_data;
159 . struct xcoff_tdata *xcoff_obj_data;
160 . struct ecoff_tdata *ecoff_obj_data;
161 . struct ieee_data_struct *ieee_data;
162 . struct ieee_ar_data_struct *ieee_ar_data;
163 . struct srec_data_struct *srec_data;
164 . struct ihex_data_struct *ihex_data;
165 . struct tekhex_data_struct *tekhex_data;
166 . struct elf_obj_tdata *elf_obj_data;
167 . struct nlm_obj_tdata *nlm_obj_data;
168 . struct bout_data_struct *bout_data;
169 . struct mmo_data_struct *mmo_data;
170 . struct sun_core_struct *sun_core_data;
171 . struct sco5_core_struct *sco5_core_data;
172 . struct trad_core_struct *trad_core_data;
173 . struct som_data_struct *som_data;
174 . struct hpux_core_struct *hpux_core_data;
175 . struct hppabsd_core_struct *hppabsd_core_data;
176 . struct sgi_core_struct *sgi_core_data;
177 . struct lynx_core_struct *lynx_core_data;
178 . struct osf_core_struct *osf_core_data;
179 . struct cisco_core_struct *cisco_core_data;
180 . struct versados_data_struct *versados_data;
181 . struct netbsd_core_struct *netbsd_core_data;
182 . struct mach_o_data_struct *mach_o_data;
183 . struct mach_o_fat_data_struct *mach_o_fat_data;
184 . struct bfd_pef_data_struct *pef_data;
185 . struct bfd_pef_xlib_data_struct *pef_xlib_data;
186 . struct bfd_sym_data_struct *sym_data;
191 . {* Used by the application to hold private data. *}
194 . {* Where all the allocated stuff under this BFD goes. This is a
195 . struct objalloc *, but we use void * to avoid requiring the inclusion
206 #include "libiberty.h"
207 #include "safe-ctype.h"
210 #include "coff/internal.h"
211 #include "coff/sym.h"
213 #include "libecoff.h"
217 /* provide storage for subsystem, stack and heap data which may have been
218 passed in on the command line. Ld puts this data into a bfd_link_info
219 struct which ultimately gets passed in to the bfd. When it arrives, copy
220 it to the following struct so that the data will be available in coffcode.h
221 where it is needed. The typedef's used are defined in bfd.h */
227 Most BFD functions return nonzero on success (check their
228 individual documentation for precise semantics). On an error,
229 they call <<bfd_set_error>> to set an error condition that callers
230 can check by calling <<bfd_get_error>>.
231 If that returns <<bfd_error_system_call>>, then check
234 The easiest way to report a BFD error to the user is to
238 Type <<bfd_error_type>>
240 The values returned by <<bfd_get_error>> are defined by the
241 enumerated type <<bfd_error_type>>.
245 .typedef enum bfd_error
247 . bfd_error_no_error = 0,
248 . bfd_error_system_call,
249 . bfd_error_invalid_target,
250 . bfd_error_wrong_format,
251 . bfd_error_wrong_object_format,
252 . bfd_error_invalid_operation,
253 . bfd_error_no_memory,
254 . bfd_error_no_symbols,
255 . bfd_error_no_armap,
256 . bfd_error_no_more_archived_files,
257 . bfd_error_malformed_archive,
258 . bfd_error_file_not_recognized,
259 . bfd_error_file_ambiguously_recognized,
260 . bfd_error_no_contents,
261 . bfd_error_nonrepresentable_section,
262 . bfd_error_no_debug_section,
263 . bfd_error_bad_value,
264 . bfd_error_file_truncated,
265 . bfd_error_file_too_big,
266 . bfd_error_invalid_error_code
272 static bfd_error_type bfd_error = bfd_error_no_error;
274 const char *const bfd_errmsgs[] =
277 N_("System call error"),
278 N_("Invalid bfd target"),
279 N_("File in wrong format"),
280 N_("Archive object file in wrong format"),
281 N_("Invalid operation"),
282 N_("Memory exhausted"),
284 N_("Archive has no index; run ranlib to add one"),
285 N_("No more archived files"),
286 N_("Malformed archive"),
287 N_("File format not recognized"),
288 N_("File format is ambiguous"),
289 N_("Section has no contents"),
290 N_("Nonrepresentable section on output"),
291 N_("Symbol needs debug section which does not exist"),
293 N_("File truncated"),
295 N_("#<Invalid error code>")
303 bfd_error_type bfd_get_error (void);
306 Return the current BFD error condition.
320 void bfd_set_error (bfd_error_type error_tag);
323 Set the BFD error condition to be @var{error_tag}.
327 bfd_set_error (bfd_error_type error_tag)
329 bfd_error = error_tag;
337 const char *bfd_errmsg (bfd_error_type error_tag);
340 Return a string describing the error @var{error_tag}, or
341 the system error if @var{error_tag} is <<bfd_error_system_call>>.
345 bfd_errmsg (bfd_error_type error_tag)
350 if (error_tag == bfd_error_system_call)
351 return xstrerror (errno);
353 if (error_tag > bfd_error_invalid_error_code)
354 error_tag = bfd_error_invalid_error_code; /* sanity check */
356 return _(bfd_errmsgs [error_tag]);
364 void bfd_perror (const char *message);
367 Print to the standard error stream a string describing the
368 last BFD error that occurred, or the last system error if
369 the last BFD error was a system call failure. If @var{message}
370 is non-NULL and non-empty, the error string printed is preceded
371 by @var{message}, a colon, and a space. It is followed by a newline.
375 bfd_perror (const char *message)
377 if (bfd_get_error () == bfd_error_system_call)
378 /* Must be a system error then. */
379 perror ((char *) message);
382 if (message == NULL || *message == '\0')
383 fprintf (stderr, "%s\n", bfd_errmsg (bfd_get_error ()));
385 fprintf (stderr, "%s: %s\n", message, bfd_errmsg (bfd_get_error ()));
393 Some BFD functions want to print messages describing the
394 problem. They call a BFD error handler function. This
395 function may be overridden by the program.
397 The BFD error handler acts like printf.
401 .typedef void (*bfd_error_handler_type) (const char *, ...);
405 /* The program name used when printing BFD error messages. */
407 static const char *_bfd_error_program_name;
409 /* This is the default routine to handle BFD error messages. */
412 _bfd_default_error_handler (const char *s, ...)
416 if (_bfd_error_program_name != NULL)
417 fprintf (stderr, "%s: ", _bfd_error_program_name);
419 fprintf (stderr, "BFD: ");
422 vfprintf (stderr, s, p);
425 fprintf (stderr, "\n");
428 /* This is a function pointer to the routine which should handle BFD
429 error messages. It is called when a BFD routine encounters an
430 error for which it wants to print a message. Going through a
431 function pointer permits a program linked against BFD to intercept
432 the messages and deal with them itself. */
434 bfd_error_handler_type _bfd_error_handler = _bfd_default_error_handler;
438 bfd_set_error_handler
441 bfd_error_handler_type bfd_set_error_handler (bfd_error_handler_type);
444 Set the BFD error handler function. Returns the previous
448 bfd_error_handler_type
449 bfd_set_error_handler (bfd_error_handler_type pnew)
451 bfd_error_handler_type pold;
453 pold = _bfd_error_handler;
454 _bfd_error_handler = pnew;
460 bfd_set_error_program_name
463 void bfd_set_error_program_name (const char *);
466 Set the program name to use when printing a BFD error. This
467 is printed before the error message followed by a colon and
468 space. The string must not be changed after it is passed to
473 bfd_set_error_program_name (const char *name)
475 _bfd_error_program_name = name;
480 bfd_get_error_handler
483 bfd_error_handler_type bfd_get_error_handler (void);
486 Return the BFD error handler function.
489 bfd_error_handler_type
490 bfd_get_error_handler (void)
492 return _bfd_error_handler;
500 const char *bfd_archive_filename (bfd *);
503 For a BFD that is a component of an archive, returns a string
504 with both the archive name and file name. For other BFDs, just
505 returns the file name.
509 bfd_archive_filename (bfd *abfd)
514 if (abfd->my_archive)
516 static size_t curr = 0;
520 needed = (strlen (bfd_get_filename (abfd->my_archive))
521 + strlen (bfd_get_filename (abfd)) + 3);
526 curr = needed + (needed >> 1);
527 buf = bfd_malloc (curr);
528 /* If we can't malloc, fail safe by returning just the file
529 name. This function is only used when building error
534 return bfd_get_filename (abfd);
537 sprintf (buf, "%s(%s)", bfd_get_filename (abfd->my_archive),
538 bfd_get_filename (abfd));
542 return bfd_get_filename (abfd);
552 bfd_get_reloc_upper_bound
555 long bfd_get_reloc_upper_bound (bfd *abfd, asection *sect);
558 Return the number of bytes required to store the
559 relocation information associated with section @var{sect}
560 attached to bfd @var{abfd}. If an error occurs, return -1.
565 bfd_get_reloc_upper_bound (bfd *abfd, sec_ptr asect)
567 if (abfd->format != bfd_object)
569 bfd_set_error (bfd_error_invalid_operation);
573 return BFD_SEND (abfd, _get_reloc_upper_bound, (abfd, asect));
578 bfd_canonicalize_reloc
581 long bfd_canonicalize_reloc
582 (bfd *abfd, asection *sec, arelent **loc, asymbol **syms);
585 Call the back end associated with the open BFD
586 @var{abfd} and translate the external form of the relocation
587 information attached to @var{sec} into the internal canonical
588 form. Place the table into memory at @var{loc}, which has
589 been preallocated, usually by a call to
590 <<bfd_get_reloc_upper_bound>>. Returns the number of relocs, or
593 The @var{syms} table is also needed for horrible internal magic
598 bfd_canonicalize_reloc (bfd *abfd,
603 if (abfd->format != bfd_object)
605 bfd_set_error (bfd_error_invalid_operation);
609 return BFD_SEND (abfd, _bfd_canonicalize_reloc,
610 (abfd, asect, location, symbols));
619 (bfd *abfd, asection *sec, arelent **rel, unsigned int count);
622 Set the relocation pointer and count within
623 section @var{sec} to the values @var{rel} and @var{count}.
624 The argument @var{abfd} is ignored.
629 bfd_set_reloc (bfd *ignore_abfd ATTRIBUTE_UNUSED,
634 asect->orelocation = location;
635 asect->reloc_count = count;
643 bfd_boolean bfd_set_file_flags (bfd *abfd, flagword flags);
646 Set the flag word in the BFD @var{abfd} to the value @var{flags}.
649 o <<bfd_error_wrong_format>> - The target bfd was not of object format.
650 o <<bfd_error_invalid_operation>> - The target bfd was open for reading.
651 o <<bfd_error_invalid_operation>> -
652 The flag word contained a bit which was not applicable to the
653 type of file. E.g., an attempt was made to set the <<D_PAGED>> bit
654 on a BFD format which does not support demand paging.
659 bfd_set_file_flags (bfd *abfd, flagword flags)
661 if (abfd->format != bfd_object)
663 bfd_set_error (bfd_error_wrong_format);
667 if (bfd_read_p (abfd))
669 bfd_set_error (bfd_error_invalid_operation);
673 bfd_get_file_flags (abfd) = flags;
674 if ((flags & bfd_applicable_file_flags (abfd)) != flags)
676 bfd_set_error (bfd_error_invalid_operation);
684 bfd_assert (const char *file, int line)
686 (*_bfd_error_handler) (_("BFD %s assertion fail %s:%d"),
687 BFD_VERSION_STRING, file, line);
690 /* A more or less friendly abort message. In libbfd.h abort is
691 defined to call this function. */
694 #define EXIT_FAILURE 1
698 _bfd_abort (const char *file, int line, const char *fn)
701 (*_bfd_error_handler)
702 (_("BFD %s internal error, aborting at %s line %d in %s\n"),
703 BFD_VERSION_STRING, file, line, fn);
705 (*_bfd_error_handler)
706 (_("BFD %s internal error, aborting at %s line %d\n"),
707 BFD_VERSION_STRING, file, line);
708 (*_bfd_error_handler) (_("Please report this bug.\n"));
709 xexit (EXIT_FAILURE);
717 int bfd_get_arch_size (bfd *abfd);
720 Returns the architecture address size, in bits, as determined
721 by the object file's format. For ELF, this information is
722 included in the header.
725 Returns the arch size in bits if known, <<-1>> otherwise.
729 bfd_get_arch_size (bfd *abfd)
731 if (abfd->xvec->flavour == bfd_target_elf_flavour)
732 return get_elf_backend_data (abfd)->s->arch_size;
739 bfd_get_sign_extend_vma
742 int bfd_get_sign_extend_vma (bfd *abfd);
745 Indicates if the target architecture "naturally" sign extends
746 an address. Some architectures implicitly sign extend address
747 values when they are converted to types larger than the size
748 of an address. For instance, bfd_get_start_address() will
749 return an address sign extended to fill a bfd_vma when this is
753 Returns <<1>> if the target architecture is known to sign
754 extend addresses, <<0>> if the target architecture is known to
755 not sign extend addresses, and <<-1>> otherwise.
759 bfd_get_sign_extend_vma (bfd *abfd)
763 if (bfd_get_flavour (abfd) == bfd_target_elf_flavour)
764 return get_elf_backend_data (abfd)->sign_extend_vma;
766 name = bfd_get_target (abfd);
768 /* Return a proper value for DJGPP & PE COFF (x86 COFF variants).
769 This function is required for DWARF2 support, but there is
770 no place to store this information in the COFF back end.
771 Should enough other COFF targets add support for DWARF2,
772 a place will have to be found. Until then, this hack will do. */
773 if (strncmp (name, "coff-go32", sizeof ("coff-go32") - 1) == 0
774 || strcmp (name, "pe-i386") == 0
775 || strcmp (name, "pei-i386") == 0)
778 bfd_set_error (bfd_error_wrong_format);
784 bfd_set_start_address
787 bfd_boolean bfd_set_start_address (bfd *abfd, bfd_vma vma);
790 Make @var{vma} the entry point of output BFD @var{abfd}.
793 Returns <<TRUE>> on success, <<FALSE>> otherwise.
797 bfd_set_start_address (bfd *abfd, bfd_vma vma)
799 abfd->start_address = vma;
808 unsigned int bfd_get_gp_size (bfd *abfd);
811 Return the maximum size of objects to be optimized using the GP
812 register under MIPS ECOFF. This is typically set by the <<-G>>
813 argument to the compiler, assembler or linker.
817 bfd_get_gp_size (bfd *abfd)
819 if (abfd->format == bfd_object)
821 if (abfd->xvec->flavour == bfd_target_ecoff_flavour)
822 return ecoff_data (abfd)->gp_size;
823 else if (abfd->xvec->flavour == bfd_target_elf_flavour)
824 return elf_gp_size (abfd);
834 void bfd_set_gp_size (bfd *abfd, unsigned int i);
837 Set the maximum size of objects to be optimized using the GP
838 register under ECOFF or MIPS ELF. This is typically set by
839 the <<-G>> argument to the compiler, assembler or linker.
843 bfd_set_gp_size (bfd *abfd, unsigned int i)
845 /* Don't try to set GP size on an archive or core file! */
846 if (abfd->format != bfd_object)
849 if (abfd->xvec->flavour == bfd_target_ecoff_flavour)
850 ecoff_data (abfd)->gp_size = i;
851 else if (abfd->xvec->flavour == bfd_target_elf_flavour)
852 elf_gp_size (abfd) = i;
855 /* Get the GP value. This is an internal function used by some of the
856 relocation special_function routines on targets which support a GP
860 _bfd_get_gp_value (bfd *abfd)
864 if (abfd->format != bfd_object)
867 if (abfd->xvec->flavour == bfd_target_ecoff_flavour)
868 return ecoff_data (abfd)->gp;
869 else if (abfd->xvec->flavour == bfd_target_elf_flavour)
870 return elf_gp (abfd);
875 /* Set the GP value. */
878 _bfd_set_gp_value (bfd *abfd, bfd_vma v)
882 if (abfd->format != bfd_object)
885 if (abfd->xvec->flavour == bfd_target_ecoff_flavour)
886 ecoff_data (abfd)->gp = v;
887 else if (abfd->xvec->flavour == bfd_target_elf_flavour)
896 bfd_vma bfd_scan_vma (const char *string, const char **end, int base);
899 Convert, like <<strtoul>>, a numerical expression
900 @var{string} into a <<bfd_vma>> integer, and return that integer.
901 (Though without as many bells and whistles as <<strtoul>>.)
902 The expression is assumed to be unsigned (i.e., positive).
903 If given a @var{base}, it is used as the base for conversion.
904 A base of 0 causes the function to interpret the string
905 in hex if a leading "0x" or "0X" is found, otherwise
906 in octal if a leading zero is found, otherwise in decimal.
908 If the value would overflow, the maximum <<bfd_vma>> value is
913 bfd_scan_vma (const char *string, const char **end, int base)
920 /* Let the host do it if possible. */
921 if (sizeof (bfd_vma) <= sizeof (unsigned long))
922 return strtoul (string, (char **) end, base);
925 if (sizeof (bfd_vma) <= sizeof (unsigned long long))
926 return strtoull (string, (char **) end, base);
931 if (string[0] == '0')
933 if ((string[1] == 'x') || (string[1] == 'X'))
940 if ((base < 2) || (base > 36))
945 && (string[1] == 'x' || string[1] == 'X')
946 && ISXDIGIT (string[2]))
951 cutoff = (~ (bfd_vma) 0) / (bfd_vma) base;
952 cutlim = (~ (bfd_vma) 0) % (bfd_vma) base;
962 else if (ISALPHA (digit))
963 digit = TOUPPER (digit) - 'A' + 10;
966 if (digit >= (unsigned int) base)
968 if (value > cutoff || (value == cutoff && digit > cutlim))
970 value = value * base + digit;
975 value = ~ (bfd_vma) 0;
985 bfd_copy_private_header_data
988 bfd_boolean bfd_copy_private_header_data (bfd *ibfd, bfd *obfd);
991 Copy private BFD header information from the BFD @var{ibfd} to the
992 the BFD @var{obfd}. This copies information that may require
993 sections to exist, but does not require symbol tables. Return
994 <<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_header_data(ibfd, obfd) \
1001 . BFD_SEND (obfd, _bfd_copy_private_header_data, \
1008 bfd_copy_private_bfd_data
1011 bfd_boolean bfd_copy_private_bfd_data (bfd *ibfd, bfd *obfd);
1014 Copy private BFD information from the BFD @var{ibfd} to the
1015 the BFD @var{obfd}. Return <<TRUE>> on success, <<FALSE>> on error.
1016 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_copy_private_bfd_data(ibfd, obfd) \
1022 . BFD_SEND (obfd, _bfd_copy_private_bfd_data, \
1029 bfd_merge_private_bfd_data
1032 bfd_boolean bfd_merge_private_bfd_data (bfd *ibfd, bfd *obfd);
1035 Merge private BFD information from the BFD @var{ibfd} to the
1036 the output file BFD @var{obfd} when linking. Return <<TRUE>>
1037 on success, <<FALSE>> on error. Possible error returns are:
1039 o <<bfd_error_no_memory>> -
1040 Not enough memory exists to create private data for @var{obfd}.
1042 .#define bfd_merge_private_bfd_data(ibfd, obfd) \
1043 . BFD_SEND (obfd, _bfd_merge_private_bfd_data, \
1050 bfd_set_private_flags
1053 bfd_boolean bfd_set_private_flags (bfd *abfd, flagword flags);
1056 Set private BFD flag information in the BFD @var{abfd}.
1057 Return <<TRUE>> on success, <<FALSE>> on error. Possible error
1060 o <<bfd_error_no_memory>> -
1061 Not enough memory exists to create private data for @var{obfd}.
1063 .#define bfd_set_private_flags(abfd, flags) \
1064 . BFD_SEND (abfd, _bfd_set_private_flags, (abfd, flags))
1073 The following functions exist but have not yet been documented.
1075 .#define bfd_sizeof_headers(abfd, reloc) \
1076 . BFD_SEND (abfd, _bfd_sizeof_headers, (abfd, reloc))
1078 .#define bfd_find_nearest_line(abfd, sec, syms, off, file, func, line) \
1079 . BFD_SEND (abfd, _bfd_find_nearest_line, \
1080 . (abfd, sec, syms, off, file, func, line))
1082 .#define bfd_debug_info_start(abfd) \
1083 . BFD_SEND (abfd, _bfd_debug_info_start, (abfd))
1085 .#define bfd_debug_info_end(abfd) \
1086 . BFD_SEND (abfd, _bfd_debug_info_end, (abfd))
1088 .#define bfd_debug_info_accumulate(abfd, section) \
1089 . BFD_SEND (abfd, _bfd_debug_info_accumulate, (abfd, section))
1091 .#define bfd_stat_arch_elt(abfd, stat) \
1092 . BFD_SEND (abfd, _bfd_stat_arch_elt,(abfd, stat))
1094 .#define bfd_update_armap_timestamp(abfd) \
1095 . BFD_SEND (abfd, _bfd_update_armap_timestamp, (abfd))
1097 .#define bfd_set_arch_mach(abfd, arch, mach)\
1098 . BFD_SEND ( abfd, _bfd_set_arch_mach, (abfd, arch, mach))
1100 .#define bfd_relax_section(abfd, section, link_info, again) \
1101 . BFD_SEND (abfd, _bfd_relax_section, (abfd, section, link_info, again))
1103 .#define bfd_gc_sections(abfd, link_info) \
1104 . BFD_SEND (abfd, _bfd_gc_sections, (abfd, link_info))
1106 .#define bfd_merge_sections(abfd, link_info) \
1107 . BFD_SEND (abfd, _bfd_merge_sections, (abfd, link_info))
1109 .#define bfd_is_group_section(abfd, sec) \
1110 . BFD_SEND (abfd, _bfd_is_group_section, (abfd, sec))
1112 .#define bfd_discard_group(abfd, sec) \
1113 . BFD_SEND (abfd, _bfd_discard_group, (abfd, sec))
1115 .#define bfd_link_hash_table_create(abfd) \
1116 . BFD_SEND (abfd, _bfd_link_hash_table_create, (abfd))
1118 .#define bfd_link_hash_table_free(abfd, hash) \
1119 . BFD_SEND (abfd, _bfd_link_hash_table_free, (hash))
1121 .#define bfd_link_add_symbols(abfd, info) \
1122 . BFD_SEND (abfd, _bfd_link_add_symbols, (abfd, info))
1124 .#define bfd_link_just_syms(sec, info) \
1125 . BFD_SEND (abfd, _bfd_link_just_syms, (sec, info))
1127 .#define bfd_final_link(abfd, info) \
1128 . BFD_SEND (abfd, _bfd_final_link, (abfd, info))
1130 .#define bfd_free_cached_info(abfd) \
1131 . BFD_SEND (abfd, _bfd_free_cached_info, (abfd))
1133 .#define bfd_get_dynamic_symtab_upper_bound(abfd) \
1134 . BFD_SEND (abfd, _bfd_get_dynamic_symtab_upper_bound, (abfd))
1136 .#define bfd_print_private_bfd_data(abfd, file)\
1137 . BFD_SEND (abfd, _bfd_print_private_bfd_data, (abfd, file))
1139 .#define bfd_canonicalize_dynamic_symtab(abfd, asymbols) \
1140 . BFD_SEND (abfd, _bfd_canonicalize_dynamic_symtab, (abfd, asymbols))
1142 .#define bfd_get_synthetic_symtab(abfd, dynsyms, ret) \
1143 . BFD_SEND (abfd, _bfd_get_synthetic_symtab, (abfd, dynsyms, ret))
1145 .#define bfd_get_dynamic_reloc_upper_bound(abfd) \
1146 . BFD_SEND (abfd, _bfd_get_dynamic_reloc_upper_bound, (abfd))
1148 .#define bfd_canonicalize_dynamic_reloc(abfd, arels, asyms) \
1149 . BFD_SEND (abfd, _bfd_canonicalize_dynamic_reloc, (abfd, arels, asyms))
1151 .extern bfd_byte *bfd_get_relocated_section_contents
1152 . (bfd *, struct bfd_link_info *, struct bfd_link_order *, bfd_byte *,
1153 . bfd_boolean, asymbol **);
1159 bfd_get_relocated_section_contents (bfd *abfd,
1160 struct bfd_link_info *link_info,
1161 struct bfd_link_order *link_order,
1163 bfd_boolean relocatable,
1167 bfd_byte *(*fn) (bfd *, struct bfd_link_info *, struct bfd_link_order *,
1168 bfd_byte *, bfd_boolean, asymbol **);
1170 if (link_order->type == bfd_indirect_link_order)
1172 abfd2 = link_order->u.indirect.section->owner;
1179 fn = abfd2->xvec->_bfd_get_relocated_section_contents;
1181 return (*fn) (abfd, link_info, link_order, data, relocatable, symbols);
1184 /* Record information about an ELF program header. */
1187 bfd_record_phdr (bfd *abfd,
1189 bfd_boolean flags_valid,
1191 bfd_boolean at_valid,
1193 bfd_boolean includes_filehdr,
1194 bfd_boolean includes_phdrs,
1198 struct elf_segment_map *m, **pm;
1201 if (bfd_get_flavour (abfd) != bfd_target_elf_flavour)
1204 amt = sizeof (struct elf_segment_map);
1205 amt += ((bfd_size_type) count - 1) * sizeof (asection *);
1206 m = bfd_alloc (abfd, amt);
1214 m->p_flags_valid = flags_valid;
1215 m->p_paddr_valid = at_valid;
1216 m->includes_filehdr = includes_filehdr;
1217 m->includes_phdrs = includes_phdrs;
1220 memcpy (m->sections, secs, count * sizeof (asection *));
1222 for (pm = &elf_tdata (abfd)->segment_map; *pm != NULL; pm = &(*pm)->next)
1230 bfd_sprintf_vma (bfd *abfd, char *buf, bfd_vma value)
1232 if (bfd_get_flavour (abfd) == bfd_target_elf_flavour)
1233 get_elf_backend_data (abfd)->elf_backend_sprintf_vma (abfd, buf, value);
1235 sprintf_vma (buf, value);
1239 bfd_fprintf_vma (bfd *abfd, void *stream, bfd_vma value)
1241 if (bfd_get_flavour (abfd) == bfd_target_elf_flavour)
1242 get_elf_backend_data (abfd)->elf_backend_fprintf_vma (abfd, stream, value);
1244 fprintf_vma ((FILE *) stream, value);
1252 bfd_boolean bfd_alt_mach_code (bfd *abfd, int alternative);
1256 When more than one machine code number is available for the
1257 same machine type, this function can be used to switch between
1258 the preferred one (alternative == 0) and any others. Currently,
1259 only ELF supports this feature, with up to two alternate
1264 bfd_alt_mach_code (bfd *abfd, int alternative)
1266 if (bfd_get_flavour (abfd) == bfd_target_elf_flavour)
1270 switch (alternative)
1273 code = get_elf_backend_data (abfd)->elf_machine_code;
1277 code = get_elf_backend_data (abfd)->elf_machine_alt1;
1283 code = get_elf_backend_data (abfd)->elf_machine_alt2;
1292 elf_elfheader (abfd)->e_machine = code;
1303 .struct bfd_preserve
1308 . const struct bfd_arch_info *arch_info;
1309 . struct bfd_section *sections;
1310 . struct bfd_section **section_tail;
1311 . unsigned int section_count;
1312 . struct bfd_hash_table section_htab;
1322 bfd_boolean bfd_preserve_save (bfd *, struct bfd_preserve *);
1325 When testing an object for compatibility with a particular
1326 target back-end, the back-end object_p function needs to set
1327 up certain fields in the bfd on successfully recognizing the
1328 object. This typically happens in a piecemeal fashion, with
1329 failures possible at many points. On failure, the bfd is
1330 supposed to be restored to its initial state, which is
1331 virtually impossible. However, restoring a subset of the bfd
1332 state works in practice. This function stores the subset and
1333 reinitializes the bfd.
1338 bfd_preserve_save (bfd *abfd, struct bfd_preserve *preserve)
1340 preserve->tdata = abfd->tdata.any;
1341 preserve->arch_info = abfd->arch_info;
1342 preserve->flags = abfd->flags;
1343 preserve->sections = abfd->sections;
1344 preserve->section_tail = abfd->section_tail;
1345 preserve->section_count = abfd->section_count;
1346 preserve->section_htab = abfd->section_htab;
1348 if (! bfd_hash_table_init (&abfd->section_htab, bfd_section_hash_newfunc))
1351 abfd->tdata.any = NULL;
1352 abfd->arch_info = &bfd_default_arch_struct;
1353 abfd->flags &= BFD_IN_MEMORY;
1354 abfd->sections = NULL;
1355 abfd->section_tail = &abfd->sections;
1356 abfd->section_count = 0;
1363 bfd_preserve_restore
1366 void bfd_preserve_restore (bfd *, struct bfd_preserve *);
1369 This function restores bfd state saved by bfd_preserve_save.
1370 If MARKER is non-NULL in struct bfd_preserve then that block
1371 and all subsequently bfd_alloc'd memory is freed.
1376 bfd_preserve_restore (bfd *abfd, struct bfd_preserve *preserve)
1378 bfd_hash_table_free (&abfd->section_htab);
1380 abfd->tdata.any = preserve->tdata;
1381 abfd->arch_info = preserve->arch_info;
1382 abfd->flags = preserve->flags;
1383 abfd->section_htab = preserve->section_htab;
1384 abfd->sections = preserve->sections;
1385 abfd->section_tail = preserve->section_tail;
1386 abfd->section_count = preserve->section_count;
1388 /* bfd_release frees all memory more recently bfd_alloc'd than
1389 its arg, as well as its arg. */
1390 if (preserve->marker != NULL)
1392 bfd_release (abfd, preserve->marker);
1393 preserve->marker = NULL;
1402 void bfd_preserve_finish (bfd *, struct bfd_preserve *);
1405 This function should be called when the bfd state saved by
1406 bfd_preserve_save is no longer needed. ie. when the back-end
1407 object_p function returns with success.
1412 bfd_preserve_finish (bfd *abfd ATTRIBUTE_UNUSED, struct bfd_preserve *preserve)
1414 /* It would be nice to be able to free more memory here, eg. old
1415 tdata, but that's not possible since these blocks are sitting
1416 inside bfd_alloc'd memory. The section hash is on a separate
1418 bfd_hash_table_free (&preserve->section_htab);