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 . {* The filename the application opened the BFD with. *}
40 . const char *filename;
42 . {* A pointer to the target jump table. *}
43 . const struct bfd_target *xvec;
45 . {* To avoid dragging too many header files into every file that
46 . includes `<<bfd.h>>', IOSTREAM has been declared as a "char *",
47 . and MTIME as a "long". Their correct types, to which they
48 . are cast when used, are "FILE *" and "time_t". The iostream
49 . is the result of an fopen on the filename. However, if the
50 . BFD_IN_MEMORY flag is set, then iostream is actually a pointer
51 . to a bfd_in_memory struct. *}
54 . {* Is the file descriptor being cached? That is, can it be closed as
55 . needed, and re-opened when accessed later? *}
58 . {* Marks whether there was a default target specified when the
59 . BFD was opened. This is used to select which matching algorithm
60 . to use to choose the back end. *}
61 . boolean target_defaulted;
63 . {* The caching routines use these to maintain a
64 . least-recently-used list of BFDs. *}
65 . struct _bfd *lru_prev, *lru_next;
67 . {* When a file is closed by the caching routines, BFD retains
68 . state information on the file here... *}
71 . {* ... and here: (``once'' means at least once). *}
72 . boolean opened_once;
74 . {* Set if we have a locally maintained mtime value, rather than
75 . getting it from the file each time. *}
78 . {* File modified time, if mtime_set is true. *}
81 . {* Reserved for an unimplemented file locking extension. *}
84 . {* The format which belongs to the BFD. (object, core, etc.) *}
87 . {* The direction with which the BFD was opened. *}
92 . write_direction = 2,
97 . {* Format_specific flags. *}
100 . {* Currently my_archive is tested before adding origin to
101 . anything. I believe that this can become always an add of
102 . origin, with origin set to 0 for non archive files. *}
105 . {* Remember when output has begun, to stop strange things
107 . boolean output_has_begun;
109 . {* A hash table for section names. *}
110 . struct bfd_hash_table section_htab;
112 . {* Pointer to linked list of sections. *}
113 . struct sec *sections;
115 . {* The place where we add to the section list. *}
116 . struct sec **section_tail;
118 . {* The number of sections. *}
119 . unsigned int section_count;
121 . {* Stuff only useful for object files:
122 . The start address. *}
123 . bfd_vma start_address;
125 . {* Used for input and output. *}
126 . unsigned int symcount;
128 . {* Symbol table for output BFD (with symcount entries). *}
129 . struct symbol_cache_entry **outsymbols;
131 . {* Used for slurped dynamic symbol tables. *}
132 . unsigned int dynsymcount;
134 . {* Pointer to structure which contains architecture information. *}
135 . const struct bfd_arch_info *arch_info;
137 . {* Stuff only useful for archives. *}
139 . struct _bfd *my_archive; {* The containing archive BFD. *}
140 . struct _bfd *next; {* The next BFD in the archive. *}
141 . struct _bfd *archive_head; {* The first BFD in the archive. *}
144 . {* A chain of BFD structures involved in a link. *}
145 . struct _bfd *link_next;
147 . {* A field used by _bfd_generic_link_add_archive_symbols. This will
148 . be used only for archive elements. *}
151 . {* Used by the back end to hold private data. *}
154 . struct aout_data_struct *aout_data;
155 . struct artdata *aout_ar_data;
156 . struct _oasys_data *oasys_obj_data;
157 . struct _oasys_ar_data *oasys_ar_data;
158 . struct coff_tdata *coff_obj_data;
159 . struct pe_tdata *pe_obj_data;
160 . struct xcoff_tdata *xcoff_obj_data;
161 . struct ecoff_tdata *ecoff_obj_data;
162 . struct ieee_data_struct *ieee_data;
163 . struct ieee_ar_data_struct *ieee_ar_data;
164 . struct srec_data_struct *srec_data;
165 . struct ihex_data_struct *ihex_data;
166 . struct tekhex_data_struct *tekhex_data;
167 . struct elf_obj_tdata *elf_obj_data;
168 . struct nlm_obj_tdata *nlm_obj_data;
169 . struct bout_data_struct *bout_data;
170 . struct mmo_data_struct *mmo_data;
171 . struct sun_core_struct *sun_core_data;
172 . struct sco5_core_struct *sco5_core_data;
173 . struct trad_core_struct *trad_core_data;
174 . struct som_data_struct *som_data;
175 . struct hpux_core_struct *hpux_core_data;
176 . struct hppabsd_core_struct *hppabsd_core_data;
177 . struct sgi_core_struct *sgi_core_data;
178 . struct lynx_core_struct *lynx_core_data;
179 . struct osf_core_struct *osf_core_data;
180 . struct cisco_core_struct *cisco_core_data;
181 . struct versados_data_struct *versados_data;
182 . struct netbsd_core_struct *netbsd_core_data;
183 . struct mach_o_data_struct *mach_o_data;
184 . struct mach_o_fat_data_struct *mach_o_fat_data;
185 . struct bfd_pef_data_struct *pef_data;
186 . struct bfd_pef_xlib_data_struct *pef_xlib_data;
187 . struct bfd_sym_data_struct *sym_data;
192 . {* Used by the application to hold private data. *}
195 . {* Where all the allocated stuff under this BFD goes. This is a
196 . struct objalloc *, but we use PTR to avoid requiring the inclusion of
207 #ifdef ANSI_PROTOTYPES
213 #include "libiberty.h"
214 #include "safe-ctype.h"
217 #include "coff/internal.h"
218 #include "coff/sym.h"
220 #include "libecoff.h"
224 /* provide storage for subsystem, stack and heap data which may have been
225 passed in on the command line. Ld puts this data into a bfd_link_info
226 struct which ultimately gets passed in to the bfd. When it arrives, copy
227 it to the following struct so that the data will be available in coffcode.h
228 where it is needed. The typedef's used are defined in bfd.h */
234 Most BFD functions return nonzero on success (check their
235 individual documentation for precise semantics). On an error,
236 they call <<bfd_set_error>> to set an error condition that callers
237 can check by calling <<bfd_get_error>>.
238 If that returns <<bfd_error_system_call>>, then check
241 The easiest way to report a BFD error to the user is to
245 Type <<bfd_error_type>>
247 The values returned by <<bfd_get_error>> are defined by the
248 enumerated type <<bfd_error_type>>.
252 .typedef enum bfd_error
254 . bfd_error_no_error = 0,
255 . bfd_error_system_call,
256 . bfd_error_invalid_target,
257 . bfd_error_wrong_format,
258 . bfd_error_wrong_object_format,
259 . bfd_error_invalid_operation,
260 . bfd_error_no_memory,
261 . bfd_error_no_symbols,
262 . bfd_error_no_armap,
263 . bfd_error_no_more_archived_files,
264 . bfd_error_malformed_archive,
265 . bfd_error_file_not_recognized,
266 . bfd_error_file_ambiguously_recognized,
267 . bfd_error_no_contents,
268 . bfd_error_nonrepresentable_section,
269 . bfd_error_no_debug_section,
270 . bfd_error_bad_value,
271 . bfd_error_file_truncated,
272 . bfd_error_file_too_big,
273 . bfd_error_invalid_error_code
279 static bfd_error_type bfd_error = bfd_error_no_error;
281 const char *const bfd_errmsgs[] =
284 N_("System call error"),
285 N_("Invalid bfd target"),
286 N_("File in wrong format"),
287 N_("Archive object file in wrong format"),
288 N_("Invalid operation"),
289 N_("Memory exhausted"),
291 N_("Archive has no index; run ranlib to add one"),
292 N_("No more archived files"),
293 N_("Malformed archive"),
294 N_("File format not recognized"),
295 N_("File format is ambiguous"),
296 N_("Section has no contents"),
297 N_("Nonrepresentable section on output"),
298 N_("Symbol needs debug section which does not exist"),
300 N_("File truncated"),
302 N_("#<Invalid error code>")
310 bfd_error_type bfd_get_error (void);
313 Return the current BFD error condition.
327 void bfd_set_error (bfd_error_type error_tag);
330 Set the BFD error condition to be @var{error_tag}.
334 bfd_set_error (error_tag)
335 bfd_error_type error_tag;
337 bfd_error = error_tag;
345 const char *bfd_errmsg (bfd_error_type error_tag);
348 Return a string describing the error @var{error_tag}, or
349 the system error if @var{error_tag} is <<bfd_error_system_call>>.
353 bfd_errmsg (error_tag)
354 bfd_error_type error_tag;
359 if (error_tag == bfd_error_system_call)
360 return xstrerror (errno);
362 if ((((int) error_tag < (int) bfd_error_no_error) ||
363 ((int) error_tag > (int) bfd_error_invalid_error_code)))
364 error_tag = bfd_error_invalid_error_code;/* sanity check */
366 return _(bfd_errmsgs [(int)error_tag]);
374 void bfd_perror (const char *message);
377 Print to the standard error stream a string describing the
378 last BFD error that occurred, or the last system error if
379 the last BFD error was a system call failure. If @var{message}
380 is non-NULL and non-empty, the error string printed is preceded
381 by @var{message}, a colon, and a space. It is followed by a newline.
388 if (bfd_get_error () == bfd_error_system_call)
389 /* Must be a system error then. */
390 perror ((char *)message);
393 if (message == NULL || *message == '\0')
394 fprintf (stderr, "%s\n", bfd_errmsg (bfd_get_error ()));
396 fprintf (stderr, "%s: %s\n", message, bfd_errmsg (bfd_get_error ()));
404 Some BFD functions want to print messages describing the
405 problem. They call a BFD error handler function. This
406 function may be overriden by the program.
408 The BFD error handler acts like printf.
412 .typedef void (*bfd_error_handler_type) PARAMS ((const char *, ...));
416 /* The program name used when printing BFD error messages. */
418 static const char *_bfd_error_program_name;
420 /* This is the default routine to handle BFD error messages. */
422 static void _bfd_default_error_handler PARAMS ((const char *s, ...));
425 _bfd_default_error_handler VPARAMS ((const char *s, ...))
427 if (_bfd_error_program_name != NULL)
428 fprintf (stderr, "%s: ", _bfd_error_program_name);
430 fprintf (stderr, "BFD: ");
433 VA_FIXEDARG (p, const char *, s);
434 vfprintf (stderr, s, p);
437 fprintf (stderr, "\n");
440 /* This is a function pointer to the routine which should handle BFD
441 error messages. It is called when a BFD routine encounters an
442 error for which it wants to print a message. Going through a
443 function pointer permits a program linked against BFD to intercept
444 the messages and deal with them itself. */
446 bfd_error_handler_type _bfd_error_handler = _bfd_default_error_handler;
450 bfd_set_error_handler
453 bfd_error_handler_type bfd_set_error_handler (bfd_error_handler_type);
456 Set the BFD error handler function. Returns the previous
460 bfd_error_handler_type
461 bfd_set_error_handler (pnew)
462 bfd_error_handler_type pnew;
464 bfd_error_handler_type pold;
466 pold = _bfd_error_handler;
467 _bfd_error_handler = pnew;
473 bfd_set_error_program_name
476 void bfd_set_error_program_name (const char *);
479 Set the program name to use when printing a BFD error. This
480 is printed before the error message followed by a colon and
481 space. The string must not be changed after it is passed to
486 bfd_set_error_program_name (name)
489 _bfd_error_program_name = name;
494 bfd_get_error_handler
497 bfd_error_handler_type bfd_get_error_handler (void);
500 Return the BFD error handler function.
503 bfd_error_handler_type
504 bfd_get_error_handler ()
506 return _bfd_error_handler;
514 const char *bfd_archive_filename (bfd *);
517 For a BFD that is a component of an archive, returns a string
518 with both the archive name and file name. For other BFDs, just
519 returns the file name.
523 bfd_archive_filename (abfd)
526 if (abfd->my_archive)
528 static size_t curr = 0;
532 needed = (strlen (bfd_get_filename (abfd->my_archive))
533 + strlen (bfd_get_filename (abfd)) + 3);
538 curr = needed + (needed >> 1);
539 buf = bfd_malloc ((bfd_size_type) curr);
540 /* If we can't malloc, fail safe by returning just the file
541 name. This function is only used when building error
546 return bfd_get_filename (abfd);
549 sprintf (buf, "%s(%s)", bfd_get_filename (abfd->my_archive),
550 bfd_get_filename (abfd));
554 return bfd_get_filename (abfd);
564 bfd_get_reloc_upper_bound
567 long bfd_get_reloc_upper_bound(bfd *abfd, asection *sect);
570 Return the number of bytes required to store the
571 relocation information associated with section @var{sect}
572 attached to bfd @var{abfd}. If an error occurs, return -1.
577 bfd_get_reloc_upper_bound (abfd, asect)
581 if (abfd->format != bfd_object)
583 bfd_set_error (bfd_error_invalid_operation);
587 return BFD_SEND (abfd, _get_reloc_upper_bound, (abfd, asect));
592 bfd_canonicalize_reloc
595 long bfd_canonicalize_reloc
602 Call the back end associated with the open BFD
603 @var{abfd} and translate the external form of the relocation
604 information attached to @var{sec} into the internal canonical
605 form. Place the table into memory at @var{loc}, which has
606 been preallocated, usually by a call to
607 <<bfd_get_reloc_upper_bound>>. Returns the number of relocs, or
610 The @var{syms} table is also needed for horrible internal magic
615 bfd_canonicalize_reloc (abfd, asect, location, symbols)
621 if (abfd->format != bfd_object)
623 bfd_set_error (bfd_error_invalid_operation);
627 return BFD_SEND (abfd, _bfd_canonicalize_reloc,
628 (abfd, asect, location, symbols));
637 (bfd *abfd, asection *sec, arelent **rel, unsigned int count);
640 Set the relocation pointer and count within
641 section @var{sec} to the values @var{rel} and @var{count}.
642 The argument @var{abfd} is ignored.
647 bfd_set_reloc (ignore_abfd, asect, location, count)
648 bfd *ignore_abfd ATTRIBUTE_UNUSED;
653 asect->orelocation = location;
654 asect->reloc_count = count;
662 boolean bfd_set_file_flags(bfd *abfd, flagword flags);
665 Set the flag word in the BFD @var{abfd} to the value @var{flags}.
668 o <<bfd_error_wrong_format>> - The target bfd was not of object format.
669 o <<bfd_error_invalid_operation>> - The target bfd was open for reading.
670 o <<bfd_error_invalid_operation>> -
671 The flag word contained a bit which was not applicable to the
672 type of file. E.g., an attempt was made to set the <<D_PAGED>> bit
673 on a BFD format which does not support demand paging.
678 bfd_set_file_flags (abfd, flags)
682 if (abfd->format != bfd_object)
684 bfd_set_error (bfd_error_wrong_format);
688 if (bfd_read_p (abfd))
690 bfd_set_error (bfd_error_invalid_operation);
694 bfd_get_file_flags (abfd) = flags;
695 if ((flags & bfd_applicable_file_flags (abfd)) != flags)
697 bfd_set_error (bfd_error_invalid_operation);
705 bfd_assert (file, line)
709 (*_bfd_error_handler) (_("BFD %s assertion fail %s:%d"),
710 BFD_VERSION_STRING, file, line);
713 /* A more or less friendly abort message. In libbfd.h abort is
714 defined to call this function. */
717 #define EXIT_FAILURE 1
721 _bfd_abort (file, line, fn)
727 (*_bfd_error_handler)
728 (_("BFD %s internal error, aborting at %s line %d in %s\n"),
729 BFD_VERSION_STRING, file, line, fn);
731 (*_bfd_error_handler)
732 (_("BFD %s internal error, aborting at %s line %d\n"),
733 BFD_VERSION_STRING, file, line);
734 (*_bfd_error_handler) (_("Please report this bug.\n"));
735 xexit (EXIT_FAILURE);
743 int bfd_get_arch_size (bfd *abfd);
746 Returns the architecture address size, in bits, as determined
747 by the object file's format. For ELF, this information is
748 included in the header.
751 Returns the arch size in bits if known, <<-1>> otherwise.
755 bfd_get_arch_size (abfd)
758 if (abfd->xvec->flavour == bfd_target_elf_flavour)
759 return (get_elf_backend_data (abfd))->s->arch_size;
766 bfd_get_sign_extend_vma
769 int bfd_get_sign_extend_vma (bfd *abfd);
772 Indicates if the target architecture "naturally" sign extends
773 an address. Some architectures implicitly sign extend address
774 values when they are converted to types larger than the size
775 of an address. For instance, bfd_get_start_address() will
776 return an address sign extended to fill a bfd_vma when this is
780 Returns <<1>> if the target architecture is known to sign
781 extend addresses, <<0>> if the target architecture is known to
782 not sign extend addresses, and <<-1>> otherwise.
786 bfd_get_sign_extend_vma (abfd)
791 if (bfd_get_flavour (abfd) == bfd_target_elf_flavour)
792 return (get_elf_backend_data (abfd)->sign_extend_vma);
794 name = bfd_get_target (abfd);
796 /* Return a proper value for DJGPP COFF (an x86 COFF variant).
797 This function is required for DWARF2 support, but there is
798 no place to store this information in the COFF back end.
799 Should enough other COFF targets add support for DWARF2,
800 a place will have to be found. Until then, this hack will do. */
801 if (strncmp (name, "coff-go32", sizeof ("coff-go32") - 1) == 0)
804 bfd_set_error (bfd_error_wrong_format);
810 bfd_set_start_address
813 boolean bfd_set_start_address(bfd *abfd, bfd_vma vma);
816 Make @var{vma} the entry point of output BFD @var{abfd}.
819 Returns <<true>> on success, <<false>> otherwise.
823 bfd_set_start_address (abfd, vma)
827 abfd->start_address = vma;
836 unsigned int bfd_get_gp_size(bfd *abfd);
839 Return the maximum size of objects to be optimized using the GP
840 register under MIPS ECOFF. This is typically set by the <<-G>>
841 argument to the compiler, assembler or linker.
845 bfd_get_gp_size (abfd)
848 if (abfd->format == bfd_object)
850 if (abfd->xvec->flavour == bfd_target_ecoff_flavour)
851 return ecoff_data (abfd)->gp_size;
852 else if (abfd->xvec->flavour == bfd_target_elf_flavour)
853 return elf_gp_size (abfd);
863 void bfd_set_gp_size(bfd *abfd, unsigned int i);
866 Set the maximum size of objects to be optimized using the GP
867 register under ECOFF or MIPS ELF. This is typically set by
868 the <<-G>> argument to the compiler, assembler or linker.
872 bfd_set_gp_size (abfd, i)
876 /* Don't try to set GP size on an archive or core file! */
877 if (abfd->format != bfd_object)
880 if (abfd->xvec->flavour == bfd_target_ecoff_flavour)
881 ecoff_data (abfd)->gp_size = i;
882 else if (abfd->xvec->flavour == bfd_target_elf_flavour)
883 elf_gp_size (abfd) = i;
886 /* Get the GP value. This is an internal function used by some of the
887 relocation special_function routines on targets which support a GP
891 _bfd_get_gp_value (abfd)
894 if (abfd->format != bfd_object)
897 if (abfd->xvec->flavour == bfd_target_ecoff_flavour)
898 return ecoff_data (abfd)->gp;
899 else if (abfd->xvec->flavour == bfd_target_elf_flavour)
900 return elf_gp (abfd);
905 /* Set the GP value. */
908 _bfd_set_gp_value (abfd, v)
912 if (abfd->format != bfd_object)
915 if (abfd->xvec->flavour == bfd_target_ecoff_flavour)
916 ecoff_data (abfd)->gp = v;
917 else if (abfd->xvec->flavour == bfd_target_elf_flavour)
926 bfd_vma bfd_scan_vma(const char *string, const char **end, int base);
929 Convert, like <<strtoul>>, a numerical expression
930 @var{string} into a <<bfd_vma>> integer, and return that integer.
931 (Though without as many bells and whistles as <<strtoul>>.)
932 The expression is assumed to be unsigned (i.e., positive).
933 If given a @var{base}, it is used as the base for conversion.
934 A base of 0 causes the function to interpret the string
935 in hex if a leading "0x" or "0X" is found, otherwise
936 in octal if a leading zero is found, otherwise in decimal.
938 If the value would overflow, the maximum <<bfd_vma>> value is
943 bfd_scan_vma (string, end, base)
953 /* Let the host do it if possible. */
954 if (sizeof (bfd_vma) <= sizeof (unsigned long))
955 return (bfd_vma) strtoul (string, (char **) end, base);
959 if (string[0] == '0')
961 if ((string[1] == 'x') || (string[1] == 'X'))
968 if ((base < 2) || (base > 36))
973 && (string[1] == 'x' || string[1] == 'X')
974 && ISXDIGIT (string[2]))
979 cutoff = (~ (bfd_vma) 0) / (bfd_vma) base;
980 cutlim = (~ (bfd_vma) 0) % (bfd_vma) base;
990 else if (ISALPHA (digit))
991 digit = TOUPPER (digit) - 'A' + 10;
994 if (digit >= (unsigned int) base)
996 if (value > cutoff || (value == cutoff && digit > cutlim))
998 value = value * base + digit;
1003 value = ~ (bfd_vma) 0;
1013 bfd_copy_private_bfd_data
1016 boolean bfd_copy_private_bfd_data(bfd *ibfd, bfd *obfd);
1019 Copy private BFD information from the BFD @var{ibfd} to the
1020 the BFD @var{obfd}. Return <<true>> on success, <<false>> on error.
1021 Possible error returns are:
1023 o <<bfd_error_no_memory>> -
1024 Not enough memory exists to create private data for @var{obfd}.
1026 .#define bfd_copy_private_bfd_data(ibfd, obfd) \
1027 . BFD_SEND (obfd, _bfd_copy_private_bfd_data, \
1034 bfd_merge_private_bfd_data
1037 boolean bfd_merge_private_bfd_data(bfd *ibfd, bfd *obfd);
1040 Merge private BFD information from the BFD @var{ibfd} to the
1041 the output file BFD @var{obfd} when linking. Return <<true>>
1042 on success, <<false>> on error. Possible error returns are:
1044 o <<bfd_error_no_memory>> -
1045 Not enough memory exists to create private data for @var{obfd}.
1047 .#define bfd_merge_private_bfd_data(ibfd, obfd) \
1048 . BFD_SEND (obfd, _bfd_merge_private_bfd_data, \
1055 bfd_set_private_flags
1058 boolean bfd_set_private_flags(bfd *abfd, flagword flags);
1061 Set private BFD flag information in the BFD @var{abfd}.
1062 Return <<true>> on success, <<false>> on error. Possible error
1065 o <<bfd_error_no_memory>> -
1066 Not enough memory exists to create private data for @var{obfd}.
1068 .#define bfd_set_private_flags(abfd, flags) \
1069 . BFD_SEND (abfd, _bfd_set_private_flags, \
1079 Stuff which should be documented:
1081 .#define bfd_sizeof_headers(abfd, reloc) \
1082 . BFD_SEND (abfd, _bfd_sizeof_headers, (abfd, reloc))
1084 .#define bfd_find_nearest_line(abfd, sec, syms, off, file, func, line) \
1085 . BFD_SEND (abfd, _bfd_find_nearest_line, (abfd, sec, syms, off, file, func, line))
1087 . {* Do these three do anything useful at all, for any back end? *}
1088 .#define bfd_debug_info_start(abfd) \
1089 . BFD_SEND (abfd, _bfd_debug_info_start, (abfd))
1091 .#define bfd_debug_info_end(abfd) \
1092 . BFD_SEND (abfd, _bfd_debug_info_end, (abfd))
1094 .#define bfd_debug_info_accumulate(abfd, section) \
1095 . BFD_SEND (abfd, _bfd_debug_info_accumulate, (abfd, section))
1098 .#define bfd_stat_arch_elt(abfd, stat) \
1099 . BFD_SEND (abfd, _bfd_stat_arch_elt,(abfd, stat))
1101 .#define bfd_update_armap_timestamp(abfd) \
1102 . BFD_SEND (abfd, _bfd_update_armap_timestamp, (abfd))
1104 .#define bfd_set_arch_mach(abfd, arch, mach)\
1105 . BFD_SEND ( abfd, _bfd_set_arch_mach, (abfd, arch, mach))
1107 .#define bfd_relax_section(abfd, section, link_info, again) \
1108 . BFD_SEND (abfd, _bfd_relax_section, (abfd, section, link_info, again))
1110 .#define bfd_gc_sections(abfd, link_info) \
1111 . BFD_SEND (abfd, _bfd_gc_sections, (abfd, link_info))
1113 .#define bfd_merge_sections(abfd, link_info) \
1114 . BFD_SEND (abfd, _bfd_merge_sections, (abfd, link_info))
1116 .#define bfd_discard_group(abfd, sec) \
1117 . BFD_SEND (abfd, _bfd_discard_group, (abfd, sec))
1119 .#define bfd_link_hash_table_create(abfd) \
1120 . BFD_SEND (abfd, _bfd_link_hash_table_create, (abfd))
1122 .#define bfd_link_hash_table_free(abfd, hash) \
1123 . BFD_SEND (abfd, _bfd_link_hash_table_free, (hash))
1125 .#define bfd_link_add_symbols(abfd, info) \
1126 . BFD_SEND (abfd, _bfd_link_add_symbols, (abfd, info))
1128 .#define bfd_link_just_syms(sec, info) \
1129 . BFD_SEND (abfd, _bfd_link_just_syms, (sec, info))
1131 .#define bfd_final_link(abfd, info) \
1132 . BFD_SEND (abfd, _bfd_final_link, (abfd, info))
1134 .#define bfd_free_cached_info(abfd) \
1135 . BFD_SEND (abfd, _bfd_free_cached_info, (abfd))
1137 .#define bfd_get_dynamic_symtab_upper_bound(abfd) \
1138 . BFD_SEND (abfd, _bfd_get_dynamic_symtab_upper_bound, (abfd))
1140 .#define bfd_print_private_bfd_data(abfd, file)\
1141 . BFD_SEND (abfd, _bfd_print_private_bfd_data, (abfd, file))
1143 .#define bfd_canonicalize_dynamic_symtab(abfd, asymbols) \
1144 . BFD_SEND (abfd, _bfd_canonicalize_dynamic_symtab, (abfd, asymbols))
1146 .#define bfd_get_dynamic_reloc_upper_bound(abfd) \
1147 . BFD_SEND (abfd, _bfd_get_dynamic_reloc_upper_bound, (abfd))
1149 .#define bfd_canonicalize_dynamic_reloc(abfd, arels, asyms) \
1150 . BFD_SEND (abfd, _bfd_canonicalize_dynamic_reloc, (abfd, arels, asyms))
1152 .extern bfd_byte *bfd_get_relocated_section_contents
1153 . PARAMS ((bfd *, struct bfd_link_info *,
1154 . struct bfd_link_order *, bfd_byte *,
1155 . boolean, asymbol **));
1161 bfd_get_relocated_section_contents (abfd, link_info, link_order, data,
1162 relocateable, symbols)
1164 struct bfd_link_info *link_info;
1165 struct bfd_link_order *link_order;
1167 boolean relocateable;
1171 bfd_byte *(*fn) PARAMS ((bfd *, struct bfd_link_info *,
1172 struct bfd_link_order *, bfd_byte *, boolean,
1175 if (link_order->type == bfd_indirect_link_order)
1177 abfd2 = link_order->u.indirect.section->owner;
1184 fn = abfd2->xvec->_bfd_get_relocated_section_contents;
1186 return (*fn) (abfd, link_info, link_order, data, relocateable, symbols);
1189 /* Record information about an ELF program header. */
1192 bfd_record_phdr (abfd, type, flags_valid, flags, at_valid, at,
1193 includes_filehdr, includes_phdrs, count, secs)
1196 boolean flags_valid;
1200 boolean includes_filehdr;
1201 boolean includes_phdrs;
1205 struct elf_segment_map *m, **pm;
1208 if (bfd_get_flavour (abfd) != bfd_target_elf_flavour)
1211 amt = sizeof (struct elf_segment_map);
1212 amt += ((bfd_size_type) count - 1) * sizeof (asection *);
1213 m = (struct elf_segment_map *) bfd_alloc (abfd, amt);
1221 m->p_flags_valid = (unsigned int) flags_valid;
1222 m->p_paddr_valid = (unsigned int) at_valid;
1223 m->includes_filehdr = (unsigned int) includes_filehdr;
1224 m->includes_phdrs = (unsigned int) includes_phdrs;
1227 memcpy (m->sections, secs, count * sizeof (asection *));
1229 for (pm = &elf_tdata (abfd)->segment_map; *pm != NULL; pm = &(*pm)->next)
1237 bfd_sprintf_vma (abfd, buf, value)
1242 if (bfd_get_flavour (abfd) == bfd_target_elf_flavour)
1243 get_elf_backend_data (abfd)->elf_backend_sprintf_vma (abfd, buf, value);
1245 sprintf_vma (buf, value);
1249 bfd_fprintf_vma (abfd, stream, value)
1254 if (bfd_get_flavour (abfd) == bfd_target_elf_flavour)
1255 get_elf_backend_data (abfd)->elf_backend_fprintf_vma (abfd, stream, value);
1257 fprintf_vma ((FILE *) stream, value);
1265 boolean bfd_alt_mach_code(bfd *abfd, int alternative);
1269 When more than one machine code number is available for the
1270 same machine type, this function can be used to switch between
1271 the preferred one (alternative == 0) and any others. Currently,
1272 only ELF supports this feature, with up to two alternate
1277 bfd_alt_mach_code (abfd, alternative)
1281 if (bfd_get_flavour (abfd) == bfd_target_elf_flavour)
1285 switch (alternative)
1288 code = get_elf_backend_data (abfd)->elf_machine_code;
1292 code = get_elf_backend_data (abfd)->elf_machine_alt1;
1298 code = get_elf_backend_data (abfd)->elf_machine_alt2;
1307 elf_elfheader (abfd)->e_machine = code;
1318 .struct bfd_preserve
1323 . const struct bfd_arch_info *arch_info;
1324 . struct sec *sections;
1325 . struct sec **section_tail;
1326 . unsigned int section_count;
1327 . struct bfd_hash_table section_htab;
1337 boolean bfd_preserve_save (bfd *, struct bfd_preserve *);
1340 When testing an object for compatibility with a particular
1341 target back-end, the back-end object_p function needs to set
1342 up certain fields in the bfd on successfully recognizing the
1343 object. This typically happens in a piecemeal fashion, with
1344 failures possible at many points. On failure, the bfd is
1345 supposed to be restored to its initial state, which is
1346 virtually impossible. However, restoring a subset of the bfd
1347 state works in practice. This function stores the subset and
1348 reinitializes the bfd.
1353 bfd_preserve_save (abfd, preserve)
1355 struct bfd_preserve *preserve;
1357 preserve->tdata = abfd->tdata.any;
1358 preserve->arch_info = abfd->arch_info;
1359 preserve->flags = abfd->flags;
1360 preserve->sections = abfd->sections;
1361 preserve->section_tail = abfd->section_tail;
1362 preserve->section_count = abfd->section_count;
1363 preserve->section_htab = abfd->section_htab;
1365 if (! bfd_hash_table_init (&abfd->section_htab, bfd_section_hash_newfunc))
1368 abfd->tdata.any = NULL;
1369 abfd->arch_info = &bfd_default_arch_struct;
1370 abfd->flags &= BFD_IN_MEMORY;
1371 abfd->sections = NULL;
1372 abfd->section_tail = &abfd->sections;
1373 abfd->section_count = 0;
1380 bfd_preserve_restore
1383 void bfd_preserve_restore (bfd *, struct bfd_preserve *);
1386 This function restores bfd state saved by bfd_preserve_save.
1387 If MARKER is non-NULL in struct bfd_preserve then that block
1388 and all subsequently bfd_alloc'd memory is freed.
1393 bfd_preserve_restore (abfd, preserve)
1395 struct bfd_preserve *preserve;
1397 bfd_hash_table_free (&abfd->section_htab);
1399 abfd->tdata.any = preserve->tdata;
1400 abfd->arch_info = preserve->arch_info;
1401 abfd->flags = preserve->flags;
1402 abfd->section_htab = preserve->section_htab;
1403 abfd->sections = preserve->sections;
1404 abfd->section_tail = preserve->section_tail;
1405 abfd->section_count = preserve->section_count;
1407 /* bfd_release frees all memory more recently bfd_alloc'd than
1408 its arg, as well as its arg. */
1409 if (preserve->marker != NULL)
1411 bfd_release (abfd, preserve->marker);
1412 preserve->marker = NULL;
1421 void bfd_preserve_finish (bfd *, struct bfd_preserve *);
1424 This function should be called when the bfd state saved by
1425 bfd_preserve_save is no longer needed. ie. when the back-end
1426 object_p function returns with success.
1431 bfd_preserve_finish (abfd, preserve)
1432 bfd *abfd ATTRIBUTE_UNUSED;
1433 struct bfd_preserve *preserve;
1435 /* It would be nice to be able to free more memory here, eg. old
1436 tdata, but that's not possible since these blocks are sitting
1437 inside bfd_alloc'd memory. The section hash is on a separate
1439 bfd_hash_table_free (&preserve->section_htab);