1 /* Generic BFD library interface and support routines.
2 Copyright (C) 1990-2016 Free Software Foundation, Inc.
3 Written by Cygnus Support.
5 This file is part of BFD, the Binary File Descriptor library.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
20 MA 02110-1301, USA. */
24 typedef bfd, Error reporting, BFD front end, BFD front end
29 A BFD has type <<bfd>>; objects of this type are the
30 cornerstone of any application using BFD. Using BFD
31 consists of making references though the BFD and to data in the BFD.
33 Here is the structure that defines the type <<bfd>>. It
34 contains the major data about the file and pointers
35 to the rest of the data.
43 . write_direction = 2,
47 .enum bfd_plugin_format
49 . bfd_plugin_unknown = 0,
62 . {* The filename the application opened the BFD with. *}
63 . const char *filename;
65 . {* A pointer to the target jump table. *}
66 . const struct bfd_target *xvec;
68 . {* The IOSTREAM, and corresponding IO vector that provide access
69 . to the file backing the BFD. *}
71 . const struct bfd_iovec *iovec;
73 . {* The caching routines use these to maintain a
74 . least-recently-used list of BFDs. *}
75 . struct bfd *lru_prev, *lru_next;
77 . {* When a file is closed by the caching routines, BFD retains
78 . state information on the file here... *}
81 . {* File modified time, if mtime_set is TRUE. *}
84 . {* A unique identifier of the BFD *}
87 . {* The format which belongs to the BFD. (object, core, etc.) *}
88 . ENUM_BITFIELD (bfd_format) format : 3;
90 . {* The direction with which the BFD was opened. *}
91 . ENUM_BITFIELD (bfd_direction) direction : 2;
93 . {* Format_specific flags. *}
94 . flagword flags : 20;
96 . {* Values that may appear in the flags field of a BFD. These also
97 . appear in the object_flags field of the bfd_target structure, where
98 . they indicate the set of flags used by that backend (not all flags
99 . are meaningful for all object file formats) (FIXME: at the moment,
100 . the object_flags values have mostly just been copied from backend
101 . to another, and are not necessarily correct). *}
103 .#define BFD_NO_FLAGS 0x00
105 . {* BFD contains relocation entries. *}
106 .#define HAS_RELOC 0x01
108 . {* BFD is directly executable. *}
111 . {* BFD has line number information (basically used for F_LNNO in a
113 .#define HAS_LINENO 0x04
115 . {* BFD has debugging information. *}
116 .#define HAS_DEBUG 0x08
118 . {* BFD has symbols. *}
119 .#define HAS_SYMS 0x10
121 . {* BFD has local symbols (basically used for F_LSYMS in a COFF
123 .#define HAS_LOCALS 0x20
125 . {* BFD is a dynamic object. *}
126 .#define DYNAMIC 0x40
128 . {* Text section is write protected (if D_PAGED is not set, this is
129 . like an a.out NMAGIC file) (the linker sets this by default, but
130 . clears it for -r or -N). *}
131 .#define WP_TEXT 0x80
133 . {* BFD is dynamically paged (this is like an a.out ZMAGIC file) (the
134 . linker sets this by default, but clears it for -r or -n or -N). *}
135 .#define D_PAGED 0x100
137 . {* BFD is relaxable (this means that bfd_relax_section may be able to
138 . do something) (sometimes bfd_relax_section can do something even if
139 . this is not set). *}
140 .#define BFD_IS_RELAXABLE 0x200
142 . {* This may be set before writing out a BFD to request using a
143 . traditional format. For example, this is used to request that when
144 . writing out an a.out object the symbols not be hashed to eliminate
146 .#define BFD_TRADITIONAL_FORMAT 0x400
148 . {* This flag indicates that the BFD contents are actually cached
149 . in memory. If this is set, iostream points to a bfd_in_memory
151 .#define BFD_IN_MEMORY 0x800
153 . {* This BFD has been created by the linker and doesn't correspond
154 . to any input file. *}
155 .#define BFD_LINKER_CREATED 0x1000
157 . {* This may be set before writing out a BFD to request that it
158 . be written using values for UIDs, GIDs, timestamps, etc. that
159 . will be consistent from run to run. *}
160 .#define BFD_DETERMINISTIC_OUTPUT 0x2000
162 . {* Compress sections in this BFD. *}
163 .#define BFD_COMPRESS 0x4000
165 . {* Decompress sections in this BFD. *}
166 .#define BFD_DECOMPRESS 0x8000
168 . {* BFD is a dummy, for plugins. *}
169 .#define BFD_PLUGIN 0x10000
171 . {* Compress sections in this BFD with SHF_COMPRESSED from gABI. *}
172 .#define BFD_COMPRESS_GABI 0x20000
174 . {* Convert ELF common symbol type to STT_COMMON or STT_OBJECT in this
176 .#define BFD_CONVERT_ELF_COMMON 0x40000
178 . {* Use the ELF STT_COMMON type in this BFD. *}
179 .#define BFD_USE_ELF_STT_COMMON 0x80000
181 . {* Flags bits to be saved in bfd_preserve_save. *}
182 .#define BFD_FLAGS_SAVED \
183 . (BFD_IN_MEMORY | BFD_COMPRESS | BFD_DECOMPRESS | BFD_PLUGIN \
184 . | BFD_COMPRESS_GABI | BFD_CONVERT_ELF_COMMON | BFD_USE_ELF_STT_COMMON)
186 . {* Flags bits which are for BFD use only. *}
187 .#define BFD_FLAGS_FOR_BFD_USE_MASK \
188 . (BFD_IN_MEMORY | BFD_COMPRESS | BFD_DECOMPRESS | BFD_LINKER_CREATED \
189 . | BFD_PLUGIN | BFD_TRADITIONAL_FORMAT | BFD_DETERMINISTIC_OUTPUT \
190 . | BFD_COMPRESS_GABI | BFD_CONVERT_ELF_COMMON | BFD_USE_ELF_STT_COMMON)
192 . {* Is the file descriptor being cached? That is, can it be closed as
193 . needed, and re-opened when accessed later? *}
194 . unsigned int cacheable : 1;
196 . {* Marks whether there was a default target specified when the
197 . BFD was opened. This is used to select which matching algorithm
198 . to use to choose the back end. *}
199 . unsigned int target_defaulted : 1;
201 . {* ... and here: (``once'' means at least once). *}
202 . unsigned int opened_once : 1;
204 . {* Set if we have a locally maintained mtime value, rather than
205 . getting it from the file each time. *}
206 . unsigned int mtime_set : 1;
208 . {* Flag set if symbols from this BFD should not be exported. *}
209 . unsigned int no_export : 1;
211 . {* Remember when output has begun, to stop strange things
213 . unsigned int output_has_begun : 1;
215 . {* Have archive map. *}
216 . unsigned int has_armap : 1;
218 . {* Set if this is a thin archive. *}
219 . unsigned int is_thin_archive : 1;
221 . {* Set if only required symbols should be added in the link hash table for
222 . this object. Used by VMS linkers. *}
223 . unsigned int selective_search : 1;
225 . {* Set if this is the linker output BFD. *}
226 . unsigned int is_linker_output : 1;
228 . {* Set if this is the linker input BFD. *}
229 . unsigned int is_linker_input : 1;
231 . {* If this is an input for a compiler plug-in library. *}
232 . ENUM_BITFIELD (bfd_plugin_format) plugin_format : 2;
234 . {* Set if this is a plugin output file. *}
235 . unsigned int lto_output : 1;
237 . {* Set to dummy BFD created when claimed by a compiler plug-in
239 . bfd *plugin_dummy_bfd;
241 . {* Currently my_archive is tested before adding origin to
242 . anything. I believe that this can become always an add of
243 . origin, with origin set to 0 for non archive files. *}
246 . {* The origin in the archive of the proxy entry. This will
247 . normally be the same as origin, except for thin archives,
248 . when it will contain the current offset of the proxy in the
249 . thin archive rather than the offset of the bfd in its actual
251 . ufile_ptr proxy_origin;
253 . {* A hash table for section names. *}
254 . struct bfd_hash_table section_htab;
256 . {* Pointer to linked list of sections. *}
257 . struct bfd_section *sections;
259 . {* The last section on the section list. *}
260 . struct bfd_section *section_last;
262 . {* The number of sections. *}
263 . unsigned int section_count;
265 . {* A field used by _bfd_generic_link_add_archive_symbols. This will
266 . be used only for archive elements. *}
269 . {* Stuff only useful for object files:
270 . The start address. *}
271 . bfd_vma start_address;
273 . {* Symbol table for output BFD (with symcount entries).
274 . Also used by the linker to cache input BFD symbols. *}
275 . struct bfd_symbol **outsymbols;
277 . {* Used for input and output. *}
278 . unsigned int symcount;
280 . {* Used for slurped dynamic symbol tables. *}
281 . unsigned int dynsymcount;
283 . {* Pointer to structure which contains architecture information. *}
284 . const struct bfd_arch_info *arch_info;
286 . {* Stuff only useful for archives. *}
288 . struct bfd *my_archive; {* The containing archive BFD. *}
289 . struct bfd *archive_next; {* The next BFD in the archive. *}
290 . struct bfd *archive_head; {* The first BFD in the archive. *}
291 . struct bfd *nested_archives; {* List of nested archive in a flattened
295 . {* For input BFDs, a chain of BFDs involved in a link. *}
297 . {* For output BFD, the linker hash table. *}
298 . struct bfd_link_hash_table *hash;
301 . {* Used by the back end to hold private data. *}
304 . struct aout_data_struct *aout_data;
305 . struct artdata *aout_ar_data;
306 . struct _oasys_data *oasys_obj_data;
307 . struct _oasys_ar_data *oasys_ar_data;
308 . struct coff_tdata *coff_obj_data;
309 . struct pe_tdata *pe_obj_data;
310 . struct xcoff_tdata *xcoff_obj_data;
311 . struct ecoff_tdata *ecoff_obj_data;
312 . struct ieee_data_struct *ieee_data;
313 . struct ieee_ar_data_struct *ieee_ar_data;
314 . struct srec_data_struct *srec_data;
315 . struct verilog_data_struct *verilog_data;
316 . struct ihex_data_struct *ihex_data;
317 . struct tekhex_data_struct *tekhex_data;
318 . struct elf_obj_tdata *elf_obj_data;
319 . struct nlm_obj_tdata *nlm_obj_data;
320 . struct bout_data_struct *bout_data;
321 . struct mmo_data_struct *mmo_data;
322 . struct sun_core_struct *sun_core_data;
323 . struct sco5_core_struct *sco5_core_data;
324 . struct trad_core_struct *trad_core_data;
325 . struct som_data_struct *som_data;
326 . struct hpux_core_struct *hpux_core_data;
327 . struct hppabsd_core_struct *hppabsd_core_data;
328 . struct sgi_core_struct *sgi_core_data;
329 . struct lynx_core_struct *lynx_core_data;
330 . struct osf_core_struct *osf_core_data;
331 . struct cisco_core_struct *cisco_core_data;
332 . struct versados_data_struct *versados_data;
333 . struct netbsd_core_struct *netbsd_core_data;
334 . struct mach_o_data_struct *mach_o_data;
335 . struct mach_o_fat_data_struct *mach_o_fat_data;
336 . struct plugin_data_struct *plugin_data;
337 . struct bfd_pef_data_struct *pef_data;
338 . struct bfd_pef_xlib_data_struct *pef_xlib_data;
339 . struct bfd_sym_data_struct *sym_data;
344 . {* Used by the application to hold private data. *}
347 . {* Where all the allocated stuff under this BFD goes. This is a
348 . struct objalloc *, but we use void * to avoid requiring the inclusion
352 . {* For input BFDs, the build ID, if the object has one. *}
353 . const struct bfd_build_id *build_id;
356 .{* See note beside bfd_set_section_userdata. *}
357 .static inline bfd_boolean
358 .bfd_set_cacheable (bfd * abfd, bfd_boolean val)
360 . abfd->cacheable = val;
370 #include "libiberty.h"
371 #include "demangle.h"
372 #include "safe-ctype.h"
375 #include "coff/internal.h"
376 #include "coff/sym.h"
378 #include "libecoff.h"
383 #define EXIT_FAILURE 1
387 /* provide storage for subsystem, stack and heap data which may have been
388 passed in on the command line. Ld puts this data into a bfd_link_info
389 struct which ultimately gets passed in to the bfd. When it arrives, copy
390 it to the following struct so that the data will be available in coffcode.h
391 where it is needed. The typedef's used are defined in bfd.h */
395 Error reporting, Miscellaneous, typedef bfd, BFD front end
400 Most BFD functions return nonzero on success (check their
401 individual documentation for precise semantics). On an error,
402 they call <<bfd_set_error>> to set an error condition that callers
403 can check by calling <<bfd_get_error>>.
404 If that returns <<bfd_error_system_call>>, then check
407 The easiest way to report a BFD error to the user is to
411 Type <<bfd_error_type>>
413 The values returned by <<bfd_get_error>> are defined by the
414 enumerated type <<bfd_error_type>>.
418 .typedef enum bfd_error
420 . bfd_error_no_error = 0,
421 . bfd_error_system_call,
422 . bfd_error_invalid_target,
423 . bfd_error_wrong_format,
424 . bfd_error_wrong_object_format,
425 . bfd_error_invalid_operation,
426 . bfd_error_no_memory,
427 . bfd_error_no_symbols,
428 . bfd_error_no_armap,
429 . bfd_error_no_more_archived_files,
430 . bfd_error_malformed_archive,
431 . bfd_error_missing_dso,
432 . bfd_error_file_not_recognized,
433 . bfd_error_file_ambiguously_recognized,
434 . bfd_error_no_contents,
435 . bfd_error_nonrepresentable_section,
436 . bfd_error_no_debug_section,
437 . bfd_error_bad_value,
438 . bfd_error_file_truncated,
439 . bfd_error_file_too_big,
440 . bfd_error_on_input,
441 . bfd_error_invalid_error_code
447 static bfd_error_type bfd_error
= bfd_error_no_error
;
448 static bfd
*input_bfd
= NULL
;
449 static bfd_error_type input_error
= bfd_error_no_error
;
451 const char *const bfd_errmsgs
[] =
454 N_("System call error"),
455 N_("Invalid bfd target"),
456 N_("File in wrong format"),
457 N_("Archive object file in wrong format"),
458 N_("Invalid operation"),
459 N_("Memory exhausted"),
461 N_("Archive has no index; run ranlib to add one"),
462 N_("No more archived files"),
463 N_("Malformed archive"),
464 N_("DSO missing from command line"),
465 N_("File format not recognized"),
466 N_("File format is ambiguous"),
467 N_("Section has no contents"),
468 N_("Nonrepresentable section on output"),
469 N_("Symbol needs debug section which does not exist"),
471 N_("File truncated"),
473 N_("Error reading %s: %s"),
474 N_("#<Invalid error code>")
482 bfd_error_type bfd_get_error (void);
485 Return the current BFD error condition.
499 void bfd_set_error (bfd_error_type error_tag, ...);
502 Set the BFD error condition to be @var{error_tag}.
503 If @var{error_tag} is bfd_error_on_input, then this function
504 takes two more parameters, the input bfd where the error
505 occurred, and the bfd_error_type error.
509 bfd_set_error (bfd_error_type error_tag
, ...)
511 bfd_error
= error_tag
;
512 if (error_tag
== bfd_error_on_input
)
514 /* This is an error that occurred during bfd_close when
515 writing an archive, but on one of the input files. */
518 va_start (ap
, error_tag
);
519 input_bfd
= va_arg (ap
, bfd
*);
520 input_error
= (bfd_error_type
) va_arg (ap
, int);
521 if (input_error
>= bfd_error_on_input
)
532 const char *bfd_errmsg (bfd_error_type error_tag);
535 Return a string describing the error @var{error_tag}, or
536 the system error if @var{error_tag} is <<bfd_error_system_call>>.
540 bfd_errmsg (bfd_error_type error_tag
)
545 if (error_tag
== bfd_error_on_input
)
548 const char *msg
= bfd_errmsg (input_error
);
550 if (asprintf (&buf
, _(bfd_errmsgs
[error_tag
]), input_bfd
->filename
, msg
)
554 /* Ick, what to do on out of memory? */
558 if (error_tag
== bfd_error_system_call
)
559 return xstrerror (errno
);
561 if (error_tag
> bfd_error_invalid_error_code
)
562 error_tag
= bfd_error_invalid_error_code
; /* sanity check */
564 return _(bfd_errmsgs
[error_tag
]);
572 void bfd_perror (const char *message);
575 Print to the standard error stream a string describing the
576 last BFD error that occurred, or the last system error if
577 the last BFD error was a system call failure. If @var{message}
578 is non-NULL and non-empty, the error string printed is preceded
579 by @var{message}, a colon, and a space. It is followed by a newline.
583 bfd_perror (const char *message
)
586 if (message
== NULL
|| *message
== '\0')
587 fprintf (stderr
, "%s\n", bfd_errmsg (bfd_get_error ()));
589 fprintf (stderr
, "%s: %s\n", message
, bfd_errmsg (bfd_get_error ()));
597 Some BFD functions want to print messages describing the
598 problem. They call a BFD error handler function. This
599 function may be overridden by the program.
601 The BFD error handler acts like vprintf.
605 .typedef void (*bfd_error_handler_type) (const char *, va_list);
609 /* The program name used when printing BFD error messages. */
611 static const char *_bfd_error_program_name
;
613 /* This is the default routine to handle BFD error messages.
614 Like fprintf (stderr, ...), but also handles some extra format specifiers.
616 %A section name from section. For group components, print group name too.
617 %B file name from bfd. For archive components, prints archive too.
619 Note - because these two extra format specifiers require special handling
620 they are scanned for and processed in this function, before calling
621 vfprintf. This means that the *arguments* for these format specifiers
622 must be the first ones in the variable argument list, regardless of where
623 the specifiers appear in the format string. Thus for example calling
624 this function with a format string of:
626 "blah %s blah %A blah %d blah %B"
628 would involve passing the arguments as:
630 "blah %s blah %A blah %d blah %B",
638 error_handler_internal (const char *fmt
, va_list ap
)
641 const char *new_fmt
, *p
;
645 /* PR 4992: Don't interrupt output being sent to stdout. */
648 if (_bfd_error_program_name
!= NULL
)
649 fprintf (stderr
, "%s: ", _bfd_error_program_name
);
651 fprintf (stderr
, "BFD: ");
656 /* Reserve enough space for the existing format string. */
657 avail
-= strlen (fmt
) + 1;
659 _exit (EXIT_FAILURE
);
665 size_t len
, extra
, trim
;
668 if (p
== NULL
|| p
[1] == '\0')
673 memcpy (bufp
, fmt
, len
+ 1);
678 if (p
[1] == 'A' || p
[1] == 'B')
681 memcpy (bufp
, fmt
, len
);
686 /* If we run out of space, tough, you lose your ridiculously
687 long file or section name. It's not safe to try to alloc
688 memory here; We might be printing an out of memory message. */
699 bfd
*abfd
= va_arg (ap
, bfd
*);
702 /* Invoking %B with a null bfd pointer is an internal error. */
704 else if (abfd
->my_archive
705 && !bfd_is_thin_archive (abfd
->my_archive
))
706 snprintf (bufp
, avail
, "%s(%s)",
707 abfd
->my_archive
->filename
, abfd
->filename
);
709 snprintf (bufp
, avail
, "%s", abfd
->filename
);
713 asection
*sec
= va_arg (ap
, asection
*);
715 const char *group
= NULL
;
716 struct coff_comdat_info
*ci
;
719 /* Invoking %A with a null section pointer is an internal error. */
723 && bfd_get_flavour (abfd
) == bfd_target_elf_flavour
724 && elf_next_in_group (sec
) != NULL
725 && (sec
->flags
& SEC_GROUP
) == 0)
726 group
= elf_group_name (sec
);
727 else if (abfd
!= NULL
728 && bfd_get_flavour (abfd
) == bfd_target_coff_flavour
729 && (ci
= bfd_coff_get_comdat_section (sec
->owner
,
733 snprintf (bufp
, avail
, "%s[%s]", sec
->name
, group
);
735 snprintf (bufp
, avail
, "%s", sec
->name
);
738 avail
= avail
- len
+ 2;
740 /* We need to replace any '%' we printed by "%%".
741 First count how many. */
745 while ((q
= strchr (q
, '%')) != NULL
)
751 /* If there isn't room, trim off the end of the string. */
756 trim
= extra
- avail
;
769 /* Now double all '%' chars, shuffling the string as we go. */
772 while ((q
[extra
] = *q
) != '%')
782 vfprintf (stderr
, new_fmt
, ap
);
784 /* On AIX, putc is implemented as a macro that triggers a -Wunused-value
785 warning, so use the fputc function to avoid it. */
786 fputc ('\n', stderr
);
790 /* This is a function pointer to the routine which should handle BFD
791 error messages. It is called when a BFD routine encounters an
792 error for which it wants to print a message. Going through a
793 function pointer permits a program linked against BFD to intercept
794 the messages and deal with them itself. */
796 static bfd_error_handler_type _bfd_error_internal
= error_handler_internal
;
799 _bfd_error_handler (const char *fmt
, ...)
804 _bfd_error_internal (fmt
, ap
);
810 bfd_set_error_handler
813 bfd_error_handler_type bfd_set_error_handler (bfd_error_handler_type);
816 Set the BFD error handler function. Returns the previous
820 bfd_error_handler_type
821 bfd_set_error_handler (bfd_error_handler_type pnew
)
823 bfd_error_handler_type pold
;
825 pold
= _bfd_error_internal
;
826 _bfd_error_internal
= pnew
;
832 bfd_set_error_program_name
835 void bfd_set_error_program_name (const char *);
838 Set the program name to use when printing a BFD error. This
839 is printed before the error message followed by a colon and
840 space. The string must not be changed after it is passed to
845 bfd_set_error_program_name (const char *name
)
847 _bfd_error_program_name
= name
;
854 If BFD finds an internal inconsistency, the bfd assert
855 handler is called with information on the BFD version, BFD
856 source file and line. If this happens, most programs linked
857 against BFD are expected to want to exit with an error, or mark
858 the current BFD operation as failed, so it is recommended to
859 override the default handler, which just calls
860 _bfd_error_handler and continues.
864 .typedef void (*bfd_assert_handler_type) (const char *bfd_formatmsg,
865 . const char *bfd_version,
866 . const char *bfd_file,
871 /* Note the use of bfd_ prefix on the parameter names above: we want to
872 show which one is the message and which is the version by naming the
873 parameters, but avoid polluting the program-using-bfd namespace as
874 the typedef is visible in the exported headers that the program
875 includes. Below, it's just for consistency. */
878 _bfd_default_assert_handler (const char *bfd_formatmsg
,
879 const char *bfd_version
,
880 const char *bfd_file
,
884 _bfd_error_handler (bfd_formatmsg
, bfd_version
, bfd_file
, bfd_line
);
887 /* Similar to _bfd_error_handler, a program can decide to exit on an
888 internal BFD error. We use a non-variadic type to simplify passing
889 on parameters to other functions, e.g. _bfd_error_handler. */
891 static bfd_assert_handler_type _bfd_assert_handler
= _bfd_default_assert_handler
;
895 bfd_set_assert_handler
898 bfd_assert_handler_type bfd_set_assert_handler (bfd_assert_handler_type);
901 Set the BFD assert handler function. Returns the previous
905 bfd_assert_handler_type
906 bfd_set_assert_handler (bfd_assert_handler_type pnew
)
908 bfd_assert_handler_type pold
;
910 pold
= _bfd_assert_handler
;
911 _bfd_assert_handler
= pnew
;
917 Miscellaneous, Memory Usage, Error reporting, BFD front end
923 Miscellaneous functions
928 bfd_get_reloc_upper_bound
931 long bfd_get_reloc_upper_bound (bfd *abfd, asection *sect);
934 Return the number of bytes required to store the
935 relocation information associated with section @var{sect}
936 attached to bfd @var{abfd}. If an error occurs, return -1.
941 bfd_get_reloc_upper_bound (bfd
*abfd
, sec_ptr asect
)
943 if (abfd
->format
!= bfd_object
)
945 bfd_set_error (bfd_error_invalid_operation
);
949 return BFD_SEND (abfd
, _get_reloc_upper_bound
, (abfd
, asect
));
954 bfd_canonicalize_reloc
957 long bfd_canonicalize_reloc
958 (bfd *abfd, asection *sec, arelent **loc, asymbol **syms);
961 Call the back end associated with the open BFD
962 @var{abfd} and translate the external form of the relocation
963 information attached to @var{sec} into the internal canonical
964 form. Place the table into memory at @var{loc}, which has
965 been preallocated, usually by a call to
966 <<bfd_get_reloc_upper_bound>>. Returns the number of relocs, or
969 The @var{syms} table is also needed for horrible internal magic
974 bfd_canonicalize_reloc (bfd
*abfd
,
979 if (abfd
->format
!= bfd_object
)
981 bfd_set_error (bfd_error_invalid_operation
);
985 return BFD_SEND (abfd
, _bfd_canonicalize_reloc
,
986 (abfd
, asect
, location
, symbols
));
995 (bfd *abfd, asection *sec, arelent **rel, unsigned int count);
998 Set the relocation pointer and count within
999 section @var{sec} to the values @var{rel} and @var{count}.
1000 The argument @var{abfd} is ignored.
1005 bfd_set_reloc (bfd
*ignore_abfd ATTRIBUTE_UNUSED
,
1010 asect
->orelocation
= location
;
1011 asect
->reloc_count
= count
;
1019 bfd_boolean bfd_set_file_flags (bfd *abfd, flagword flags);
1022 Set the flag word in the BFD @var{abfd} to the value @var{flags}.
1024 Possible errors are:
1025 o <<bfd_error_wrong_format>> - The target bfd was not of object format.
1026 o <<bfd_error_invalid_operation>> - The target bfd was open for reading.
1027 o <<bfd_error_invalid_operation>> -
1028 The flag word contained a bit which was not applicable to the
1029 type of file. E.g., an attempt was made to set the <<D_PAGED>> bit
1030 on a BFD format which does not support demand paging.
1035 bfd_set_file_flags (bfd
*abfd
, flagword flags
)
1037 if (abfd
->format
!= bfd_object
)
1039 bfd_set_error (bfd_error_wrong_format
);
1043 if (bfd_read_p (abfd
))
1045 bfd_set_error (bfd_error_invalid_operation
);
1049 bfd_get_file_flags (abfd
) = flags
;
1050 if ((flags
& bfd_applicable_file_flags (abfd
)) != flags
)
1052 bfd_set_error (bfd_error_invalid_operation
);
1060 bfd_assert (const char *file
, int line
)
1062 (*_bfd_assert_handler
) (_("BFD %s assertion fail %s:%d"),
1063 BFD_VERSION_STRING
, file
, line
);
1066 /* A more or less friendly abort message. In libbfd.h abort is
1067 defined to call this function. */
1070 _bfd_abort (const char *file
, int line
, const char *fn
)
1074 (_("BFD %s internal error, aborting at %s:%d in %s\n"),
1075 BFD_VERSION_STRING
, file
, line
, fn
);
1078 (_("BFD %s internal error, aborting at %s:%d\n"),
1079 BFD_VERSION_STRING
, file
, line
);
1080 _bfd_error_handler (_("Please report this bug.\n"));
1081 _exit (EXIT_FAILURE
);
1089 int bfd_get_arch_size (bfd *abfd);
1092 Returns the normalized architecture address size, in bits, as
1093 determined by the object file's format. By normalized, we mean
1094 either 32 or 64. For ELF, this information is included in the
1095 header. Use bfd_arch_bits_per_address for number of bits in
1096 the architecture address.
1099 Returns the arch size in bits if known, <<-1>> otherwise.
1103 bfd_get_arch_size (bfd
*abfd
)
1105 if (abfd
->xvec
->flavour
== bfd_target_elf_flavour
)
1106 return get_elf_backend_data (abfd
)->s
->arch_size
;
1108 return bfd_arch_bits_per_address (abfd
) > 32 ? 64 : 32;
1113 bfd_get_sign_extend_vma
1116 int bfd_get_sign_extend_vma (bfd *abfd);
1119 Indicates if the target architecture "naturally" sign extends
1120 an address. Some architectures implicitly sign extend address
1121 values when they are converted to types larger than the size
1122 of an address. For instance, bfd_get_start_address() will
1123 return an address sign extended to fill a bfd_vma when this is
1127 Returns <<1>> if the target architecture is known to sign
1128 extend addresses, <<0>> if the target architecture is known to
1129 not sign extend addresses, and <<-1>> otherwise.
1133 bfd_get_sign_extend_vma (bfd
*abfd
)
1137 if (bfd_get_flavour (abfd
) == bfd_target_elf_flavour
)
1138 return get_elf_backend_data (abfd
)->sign_extend_vma
;
1140 name
= bfd_get_target (abfd
);
1142 /* Return a proper value for DJGPP & PE COFF.
1143 This function is required for DWARF2 support, but there is
1144 no place to store this information in the COFF back end.
1145 Should enough other COFF targets add support for DWARF2,
1146 a place will have to be found. Until then, this hack will do. */
1147 if (CONST_STRNEQ (name
, "coff-go32")
1148 || strcmp (name
, "pe-i386") == 0
1149 || strcmp (name
, "pei-i386") == 0
1150 || strcmp (name
, "pe-x86-64") == 0
1151 || strcmp (name
, "pei-x86-64") == 0
1152 || strcmp (name
, "pe-arm-wince-little") == 0
1153 || strcmp (name
, "pei-arm-wince-little") == 0
1154 || strcmp (name
, "aixcoff-rs6000") == 0)
1157 if (CONST_STRNEQ (name
, "mach-o"))
1160 bfd_set_error (bfd_error_wrong_format
);
1166 bfd_set_start_address
1169 bfd_boolean bfd_set_start_address (bfd *abfd, bfd_vma vma);
1172 Make @var{vma} the entry point of output BFD @var{abfd}.
1175 Returns <<TRUE>> on success, <<FALSE>> otherwise.
1179 bfd_set_start_address (bfd
*abfd
, bfd_vma vma
)
1181 abfd
->start_address
= vma
;
1190 unsigned int bfd_get_gp_size (bfd *abfd);
1193 Return the maximum size of objects to be optimized using the GP
1194 register under MIPS ECOFF. This is typically set by the <<-G>>
1195 argument to the compiler, assembler or linker.
1199 bfd_get_gp_size (bfd
*abfd
)
1201 if (abfd
->format
== bfd_object
)
1203 if (abfd
->xvec
->flavour
== bfd_target_ecoff_flavour
)
1204 return ecoff_data (abfd
)->gp_size
;
1205 else if (abfd
->xvec
->flavour
== bfd_target_elf_flavour
)
1206 return elf_gp_size (abfd
);
1216 void bfd_set_gp_size (bfd *abfd, unsigned int i);
1219 Set the maximum size of objects to be optimized using the GP
1220 register under ECOFF or MIPS ELF. This is typically set by
1221 the <<-G>> argument to the compiler, assembler or linker.
1225 bfd_set_gp_size (bfd
*abfd
, unsigned int i
)
1227 /* Don't try to set GP size on an archive or core file! */
1228 if (abfd
->format
!= bfd_object
)
1231 if (abfd
->xvec
->flavour
== bfd_target_ecoff_flavour
)
1232 ecoff_data (abfd
)->gp_size
= i
;
1233 else if (abfd
->xvec
->flavour
== bfd_target_elf_flavour
)
1234 elf_gp_size (abfd
) = i
;
1237 /* Get the GP value. This is an internal function used by some of the
1238 relocation special_function routines on targets which support a GP
1242 _bfd_get_gp_value (bfd
*abfd
)
1246 if (abfd
->format
!= bfd_object
)
1249 if (abfd
->xvec
->flavour
== bfd_target_ecoff_flavour
)
1250 return ecoff_data (abfd
)->gp
;
1251 else if (abfd
->xvec
->flavour
== bfd_target_elf_flavour
)
1252 return elf_gp (abfd
);
1257 /* Set the GP value. */
1260 _bfd_set_gp_value (bfd
*abfd
, bfd_vma v
)
1264 if (abfd
->format
!= bfd_object
)
1267 if (abfd
->xvec
->flavour
== bfd_target_ecoff_flavour
)
1268 ecoff_data (abfd
)->gp
= v
;
1269 else if (abfd
->xvec
->flavour
== bfd_target_elf_flavour
)
1278 bfd_vma bfd_scan_vma (const char *string, const char **end, int base);
1281 Convert, like <<strtoul>>, a numerical expression
1282 @var{string} into a <<bfd_vma>> integer, and return that integer.
1283 (Though without as many bells and whistles as <<strtoul>>.)
1284 The expression is assumed to be unsigned (i.e., positive).
1285 If given a @var{base}, it is used as the base for conversion.
1286 A base of 0 causes the function to interpret the string
1287 in hex if a leading "0x" or "0X" is found, otherwise
1288 in octal if a leading zero is found, otherwise in decimal.
1290 If the value would overflow, the maximum <<bfd_vma>> value is
1295 bfd_scan_vma (const char *string
, const char **end
, int base
)
1299 unsigned int cutlim
;
1302 /* Let the host do it if possible. */
1303 if (sizeof (bfd_vma
) <= sizeof (unsigned long))
1304 return strtoul (string
, (char **) end
, base
);
1306 #ifdef HAVE_STRTOULL
1307 if (sizeof (bfd_vma
) <= sizeof (unsigned long long))
1308 return strtoull (string
, (char **) end
, base
);
1313 if (string
[0] == '0')
1315 if ((string
[1] == 'x') || (string
[1] == 'X'))
1322 if ((base
< 2) || (base
> 36))
1327 && (string
[1] == 'x' || string
[1] == 'X')
1328 && ISXDIGIT (string
[2]))
1333 cutoff
= (~ (bfd_vma
) 0) / (bfd_vma
) base
;
1334 cutlim
= (~ (bfd_vma
) 0) % (bfd_vma
) base
;
1342 if (ISDIGIT (digit
))
1343 digit
= digit
- '0';
1344 else if (ISALPHA (digit
))
1345 digit
= TOUPPER (digit
) - 'A' + 10;
1348 if (digit
>= (unsigned int) base
)
1350 if (value
> cutoff
|| (value
== cutoff
&& digit
> cutlim
))
1352 value
= value
* base
+ digit
;
1357 value
= ~ (bfd_vma
) 0;
1367 bfd_copy_private_header_data
1370 bfd_boolean bfd_copy_private_header_data (bfd *ibfd, bfd *obfd);
1373 Copy private BFD header information from the BFD @var{ibfd} to the
1374 the BFD @var{obfd}. This copies information that may require
1375 sections to exist, but does not require symbol tables. Return
1376 <<true>> on success, <<false>> on error.
1377 Possible error returns are:
1379 o <<bfd_error_no_memory>> -
1380 Not enough memory exists to create private data for @var{obfd}.
1382 .#define bfd_copy_private_header_data(ibfd, obfd) \
1383 . BFD_SEND (obfd, _bfd_copy_private_header_data, \
1390 bfd_copy_private_bfd_data
1393 bfd_boolean bfd_copy_private_bfd_data (bfd *ibfd, bfd *obfd);
1396 Copy private BFD information from the BFD @var{ibfd} to the
1397 the BFD @var{obfd}. Return <<TRUE>> on success, <<FALSE>> on error.
1398 Possible error returns are:
1400 o <<bfd_error_no_memory>> -
1401 Not enough memory exists to create private data for @var{obfd}.
1403 .#define bfd_copy_private_bfd_data(ibfd, obfd) \
1404 . BFD_SEND (obfd, _bfd_copy_private_bfd_data, \
1411 bfd_set_private_flags
1414 bfd_boolean bfd_set_private_flags (bfd *abfd, flagword flags);
1417 Set private BFD flag information in the BFD @var{abfd}.
1418 Return <<TRUE>> on success, <<FALSE>> on error. Possible error
1421 o <<bfd_error_no_memory>> -
1422 Not enough memory exists to create private data for @var{obfd}.
1424 .#define bfd_set_private_flags(abfd, flags) \
1425 . BFD_SEND (abfd, _bfd_set_private_flags, (abfd, flags))
1434 The following functions exist but have not yet been documented.
1436 .#define bfd_sizeof_headers(abfd, info) \
1437 . BFD_SEND (abfd, _bfd_sizeof_headers, (abfd, info))
1439 .#define bfd_find_nearest_line(abfd, sec, syms, off, file, func, line) \
1440 . BFD_SEND (abfd, _bfd_find_nearest_line, \
1441 . (abfd, syms, sec, off, file, func, line, NULL))
1443 .#define bfd_find_nearest_line_discriminator(abfd, sec, syms, off, file, func, \
1445 . BFD_SEND (abfd, _bfd_find_nearest_line, \
1446 . (abfd, syms, sec, off, file, func, line, disc))
1448 .#define bfd_find_line(abfd, syms, sym, file, line) \
1449 . BFD_SEND (abfd, _bfd_find_line, \
1450 . (abfd, syms, sym, file, line))
1452 .#define bfd_find_inliner_info(abfd, file, func, line) \
1453 . BFD_SEND (abfd, _bfd_find_inliner_info, \
1454 . (abfd, file, func, line))
1456 .#define bfd_debug_info_start(abfd) \
1457 . BFD_SEND (abfd, _bfd_debug_info_start, (abfd))
1459 .#define bfd_debug_info_end(abfd) \
1460 . BFD_SEND (abfd, _bfd_debug_info_end, (abfd))
1462 .#define bfd_debug_info_accumulate(abfd, section) \
1463 . BFD_SEND (abfd, _bfd_debug_info_accumulate, (abfd, section))
1465 .#define bfd_stat_arch_elt(abfd, stat) \
1466 . BFD_SEND (abfd, _bfd_stat_arch_elt,(abfd, stat))
1468 .#define bfd_update_armap_timestamp(abfd) \
1469 . BFD_SEND (abfd, _bfd_update_armap_timestamp, (abfd))
1471 .#define bfd_set_arch_mach(abfd, arch, mach)\
1472 . BFD_SEND ( abfd, _bfd_set_arch_mach, (abfd, arch, mach))
1474 .#define bfd_relax_section(abfd, section, link_info, again) \
1475 . BFD_SEND (abfd, _bfd_relax_section, (abfd, section, link_info, again))
1477 .#define bfd_gc_sections(abfd, link_info) \
1478 . BFD_SEND (abfd, _bfd_gc_sections, (abfd, link_info))
1480 .#define bfd_lookup_section_flags(link_info, flag_info, section) \
1481 . BFD_SEND (abfd, _bfd_lookup_section_flags, (link_info, flag_info, section))
1483 .#define bfd_merge_sections(abfd, link_info) \
1484 . BFD_SEND (abfd, _bfd_merge_sections, (abfd, link_info))
1486 .#define bfd_is_group_section(abfd, sec) \
1487 . BFD_SEND (abfd, _bfd_is_group_section, (abfd, sec))
1489 .#define bfd_discard_group(abfd, sec) \
1490 . BFD_SEND (abfd, _bfd_discard_group, (abfd, sec))
1492 .#define bfd_link_hash_table_create(abfd) \
1493 . BFD_SEND (abfd, _bfd_link_hash_table_create, (abfd))
1495 .#define bfd_link_add_symbols(abfd, info) \
1496 . BFD_SEND (abfd, _bfd_link_add_symbols, (abfd, info))
1498 .#define bfd_link_just_syms(abfd, sec, info) \
1499 . BFD_SEND (abfd, _bfd_link_just_syms, (sec, info))
1501 .#define bfd_final_link(abfd, info) \
1502 . BFD_SEND (abfd, _bfd_final_link, (abfd, info))
1504 .#define bfd_free_cached_info(abfd) \
1505 . BFD_SEND (abfd, _bfd_free_cached_info, (abfd))
1507 .#define bfd_get_dynamic_symtab_upper_bound(abfd) \
1508 . BFD_SEND (abfd, _bfd_get_dynamic_symtab_upper_bound, (abfd))
1510 .#define bfd_print_private_bfd_data(abfd, file)\
1511 . BFD_SEND (abfd, _bfd_print_private_bfd_data, (abfd, file))
1513 .#define bfd_canonicalize_dynamic_symtab(abfd, asymbols) \
1514 . BFD_SEND (abfd, _bfd_canonicalize_dynamic_symtab, (abfd, asymbols))
1516 .#define bfd_get_synthetic_symtab(abfd, count, syms, dyncount, dynsyms, ret) \
1517 . BFD_SEND (abfd, _bfd_get_synthetic_symtab, (abfd, count, syms, \
1518 . dyncount, dynsyms, ret))
1520 .#define bfd_get_dynamic_reloc_upper_bound(abfd) \
1521 . BFD_SEND (abfd, _bfd_get_dynamic_reloc_upper_bound, (abfd))
1523 .#define bfd_canonicalize_dynamic_reloc(abfd, arels, asyms) \
1524 . BFD_SEND (abfd, _bfd_canonicalize_dynamic_reloc, (abfd, arels, asyms))
1526 .extern bfd_byte *bfd_get_relocated_section_contents
1527 . (bfd *, struct bfd_link_info *, struct bfd_link_order *, bfd_byte *,
1528 . bfd_boolean, asymbol **);
1534 bfd_get_relocated_section_contents (bfd
*abfd
,
1535 struct bfd_link_info
*link_info
,
1536 struct bfd_link_order
*link_order
,
1538 bfd_boolean relocatable
,
1542 bfd_byte
*(*fn
) (bfd
*, struct bfd_link_info
*, struct bfd_link_order
*,
1543 bfd_byte
*, bfd_boolean
, asymbol
**);
1545 if (link_order
->type
== bfd_indirect_link_order
)
1547 abfd2
= link_order
->u
.indirect
.section
->owner
;
1554 fn
= abfd2
->xvec
->_bfd_get_relocated_section_contents
;
1556 return (*fn
) (abfd
, link_info
, link_order
, data
, relocatable
, symbols
);
1559 /* Record information about an ELF program header. */
1562 bfd_record_phdr (bfd
*abfd
,
1564 bfd_boolean flags_valid
,
1566 bfd_boolean at_valid
,
1568 bfd_boolean includes_filehdr
,
1569 bfd_boolean includes_phdrs
,
1573 struct elf_segment_map
*m
, **pm
;
1576 if (bfd_get_flavour (abfd
) != bfd_target_elf_flavour
)
1579 amt
= sizeof (struct elf_segment_map
);
1580 amt
+= ((bfd_size_type
) count
- 1) * sizeof (asection
*);
1581 m
= (struct elf_segment_map
*) bfd_zalloc (abfd
, amt
);
1588 m
->p_flags_valid
= flags_valid
;
1589 m
->p_paddr_valid
= at_valid
;
1590 m
->includes_filehdr
= includes_filehdr
;
1591 m
->includes_phdrs
= includes_phdrs
;
1594 memcpy (m
->sections
, secs
, count
* sizeof (asection
*));
1596 for (pm
= &elf_seg_map (abfd
); *pm
!= NULL
; pm
= &(*pm
)->next
)
1604 /* Return true iff this target is 32-bit. */
1609 if (bfd_get_flavour (abfd
) == bfd_target_elf_flavour
)
1611 const struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
1612 return bed
->s
->elfclass
== ELFCLASS32
;
1615 /* For non-ELF targets, use architecture information. */
1616 return bfd_arch_bits_per_address (abfd
) <= 32;
1620 /* bfd_sprintf_vma and bfd_fprintf_vma display an address in the
1621 target's address size. */
1624 bfd_sprintf_vma (bfd
*abfd ATTRIBUTE_UNUSED
, char *buf
, bfd_vma value
)
1629 sprintf (buf
, "%08lx", (unsigned long) value
& 0xffffffff);
1633 sprintf_vma (buf
, value
);
1637 bfd_fprintf_vma (bfd
*abfd ATTRIBUTE_UNUSED
, void *stream
, bfd_vma value
)
1642 fprintf ((FILE *) stream
, "%08lx", (unsigned long) value
& 0xffffffff);
1646 fprintf_vma ((FILE *) stream
, value
);
1654 bfd_boolean bfd_alt_mach_code (bfd *abfd, int alternative);
1658 When more than one machine code number is available for the
1659 same machine type, this function can be used to switch between
1660 the preferred one (alternative == 0) and any others. Currently,
1661 only ELF supports this feature, with up to two alternate
1666 bfd_alt_mach_code (bfd
*abfd
, int alternative
)
1668 if (bfd_get_flavour (abfd
) == bfd_target_elf_flavour
)
1672 switch (alternative
)
1675 code
= get_elf_backend_data (abfd
)->elf_machine_code
;
1679 code
= get_elf_backend_data (abfd
)->elf_machine_alt1
;
1685 code
= get_elf_backend_data (abfd
)->elf_machine_alt2
;
1694 elf_elfheader (abfd
)->e_machine
= code
;
1704 bfd_emul_get_maxpagesize
1707 bfd_vma bfd_emul_get_maxpagesize (const char *);
1710 Returns the maximum page size, in bytes, as determined by
1714 Returns the maximum page size in bytes for ELF, 0 otherwise.
1718 bfd_emul_get_maxpagesize (const char *emul
)
1720 const bfd_target
*target
;
1722 target
= bfd_find_target (emul
, NULL
);
1724 && target
->flavour
== bfd_target_elf_flavour
)
1725 return xvec_get_elf_backend_data (target
)->maxpagesize
;
1731 bfd_elf_set_pagesize (const bfd_target
*target
, bfd_vma size
,
1732 int offset
, const bfd_target
*orig_target
)
1734 if (target
->flavour
== bfd_target_elf_flavour
)
1736 const struct elf_backend_data
*bed
;
1738 bed
= xvec_get_elf_backend_data (target
);
1739 *((bfd_vma
*) ((char *) bed
+ offset
)) = size
;
1742 if (target
->alternative_target
1743 && target
->alternative_target
!= orig_target
)
1744 bfd_elf_set_pagesize (target
->alternative_target
, size
, offset
,
1750 bfd_emul_set_maxpagesize
1753 void bfd_emul_set_maxpagesize (const char *, bfd_vma);
1756 For ELF, set the maximum page size for the emulation. It is
1757 a no-op for other formats.
1762 bfd_emul_set_maxpagesize (const char *emul
, bfd_vma size
)
1764 const bfd_target
*target
;
1766 target
= bfd_find_target (emul
, NULL
);
1768 bfd_elf_set_pagesize (target
, size
,
1769 offsetof (struct elf_backend_data
,
1770 maxpagesize
), target
);
1775 bfd_emul_get_commonpagesize
1778 bfd_vma bfd_emul_get_commonpagesize (const char *);
1781 Returns the common page size, in bytes, as determined by
1785 Returns the common page size in bytes for ELF, 0 otherwise.
1789 bfd_emul_get_commonpagesize (const char *emul
)
1791 const bfd_target
*target
;
1793 target
= bfd_find_target (emul
, NULL
);
1795 && target
->flavour
== bfd_target_elf_flavour
)
1796 return xvec_get_elf_backend_data (target
)->commonpagesize
;
1803 bfd_emul_set_commonpagesize
1806 void bfd_emul_set_commonpagesize (const char *, bfd_vma);
1809 For ELF, set the common page size for the emulation. It is
1810 a no-op for other formats.
1815 bfd_emul_set_commonpagesize (const char *emul
, bfd_vma size
)
1817 const bfd_target
*target
;
1819 target
= bfd_find_target (emul
, NULL
);
1821 bfd_elf_set_pagesize (target
, size
,
1822 offsetof (struct elf_backend_data
,
1823 commonpagesize
), target
);
1831 char *bfd_demangle (bfd *, const char *, int);
1834 Wrapper around cplus_demangle. Strips leading underscores and
1835 other such chars that would otherwise confuse the demangler.
1836 If passed a g++ v3 ABI mangled name, returns a buffer allocated
1837 with malloc holding the demangled name. Returns NULL otherwise
1838 and on memory alloc failure.
1842 bfd_demangle (bfd
*abfd
, const char *name
, int options
)
1845 const char *pre
, *suf
;
1847 bfd_boolean skip_lead
;
1849 skip_lead
= (abfd
!= NULL
1851 && bfd_get_symbol_leading_char (abfd
) == *name
);
1855 /* This is a hack for better error reporting on XCOFF, PowerPC64-ELF
1856 or the MS PE format. These formats have a number of leading '.'s
1857 on at least some symbols, so we remove all dots to avoid
1858 confusing the demangler. */
1860 while (*name
== '.' || *name
== '$')
1862 pre_len
= name
- pre
;
1864 /* Strip off @plt and suchlike too. */
1866 suf
= strchr (name
, '@');
1869 alloc
= (char *) bfd_malloc (suf
- name
+ 1);
1872 memcpy (alloc
, name
, suf
- name
);
1873 alloc
[suf
- name
] = '\0';
1877 res
= cplus_demangle (name
, options
);
1886 size_t len
= strlen (pre
) + 1;
1887 alloc
= (char *) bfd_malloc (len
);
1890 memcpy (alloc
, pre
, len
);
1896 /* Put back any prefix or suffix. */
1897 if (pre_len
!= 0 || suf
!= NULL
)
1906 suf_len
= strlen (suf
) + 1;
1907 final
= (char *) bfd_malloc (pre_len
+ len
+ suf_len
);
1910 memcpy (final
, pre
, pre_len
);
1911 memcpy (final
+ pre_len
, res
, len
);
1912 memcpy (final
+ pre_len
+ len
, suf
, suf_len
);
1923 bfd_update_compression_header
1926 void bfd_update_compression_header
1927 (bfd *abfd, bfd_byte *contents, asection *sec);
1930 Set the compression header at CONTENTS of SEC in ABFD and update
1931 elf_section_flags for compression.
1935 bfd_update_compression_header (bfd
*abfd
, bfd_byte
*contents
,
1938 if ((abfd
->flags
& BFD_COMPRESS
) != 0)
1940 if (bfd_get_flavour (abfd
) == bfd_target_elf_flavour
)
1942 if ((abfd
->flags
& BFD_COMPRESS_GABI
) != 0)
1944 const struct elf_backend_data
*bed
1945 = get_elf_backend_data (abfd
);
1947 /* Set the SHF_COMPRESSED bit. */
1948 elf_section_flags (sec
) |= SHF_COMPRESSED
;
1950 if (bed
->s
->elfclass
== ELFCLASS32
)
1952 Elf32_External_Chdr
*echdr
1953 = (Elf32_External_Chdr
*) contents
;
1954 bfd_put_32 (abfd
, ELFCOMPRESS_ZLIB
, &echdr
->ch_type
);
1955 bfd_put_32 (abfd
, sec
->size
, &echdr
->ch_size
);
1956 bfd_put_32 (abfd
, 1 << sec
->alignment_power
,
1957 &echdr
->ch_addralign
);
1961 Elf64_External_Chdr
*echdr
1962 = (Elf64_External_Chdr
*) contents
;
1963 bfd_put_32 (abfd
, ELFCOMPRESS_ZLIB
, &echdr
->ch_type
);
1964 bfd_put_32 (abfd
, 0, &echdr
->ch_reserved
);
1965 bfd_put_64 (abfd
, sec
->size
, &echdr
->ch_size
);
1966 bfd_put_64 (abfd
, 1 << sec
->alignment_power
,
1967 &echdr
->ch_addralign
);
1972 /* Clear the SHF_COMPRESSED bit. */
1973 elf_section_flags (sec
) &= ~SHF_COMPRESSED
;
1975 /* Write the zlib header. It should be "ZLIB" followed by
1976 the uncompressed section size, 8 bytes in big-endian
1978 memcpy (contents
, "ZLIB", 4);
1979 bfd_putb64 (sec
->size
, contents
+ 4);
1989 bfd_check_compression_header
1992 bfd_boolean bfd_check_compression_header
1993 (bfd *abfd, bfd_byte *contents, asection *sec,
1994 bfd_size_type *uncompressed_size);
1997 Check the compression header at CONTENTS of SEC in ABFD and
1998 store the uncompressed size in UNCOMPRESSED_SIZE if the
1999 compression header is valid.
2002 Return TRUE if the compression header is valid.
2006 bfd_check_compression_header (bfd
*abfd
, bfd_byte
*contents
,
2008 bfd_size_type
*uncompressed_size
)
2010 if (bfd_get_flavour (abfd
) == bfd_target_elf_flavour
2011 && (elf_section_flags (sec
) & SHF_COMPRESSED
) != 0)
2013 Elf_Internal_Chdr chdr
;
2014 const struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
2015 if (bed
->s
->elfclass
== ELFCLASS32
)
2017 Elf32_External_Chdr
*echdr
= (Elf32_External_Chdr
*) contents
;
2018 chdr
.ch_type
= bfd_get_32 (abfd
, &echdr
->ch_type
);
2019 chdr
.ch_size
= bfd_get_32 (abfd
, &echdr
->ch_size
);
2020 chdr
.ch_addralign
= bfd_get_32 (abfd
, &echdr
->ch_addralign
);
2024 Elf64_External_Chdr
*echdr
= (Elf64_External_Chdr
*) contents
;
2025 chdr
.ch_type
= bfd_get_32 (abfd
, &echdr
->ch_type
);
2026 chdr
.ch_size
= bfd_get_64 (abfd
, &echdr
->ch_size
);
2027 chdr
.ch_addralign
= bfd_get_64 (abfd
, &echdr
->ch_addralign
);
2029 if (chdr
.ch_type
== ELFCOMPRESS_ZLIB
2030 && chdr
.ch_addralign
== 1U << sec
->alignment_power
)
2032 *uncompressed_size
= chdr
.ch_size
;
2042 bfd_get_compression_header_size
2045 int bfd_get_compression_header_size (bfd *abfd, asection *sec);
2048 Return the size of the compression header of SEC in ABFD.
2051 Return the size of the compression header in bytes.
2055 bfd_get_compression_header_size (bfd
*abfd
, asection
*sec
)
2057 if (bfd_get_flavour (abfd
) == bfd_target_elf_flavour
)
2061 if (!(abfd
->flags
& BFD_COMPRESS_GABI
))
2064 else if (!(elf_section_flags (sec
) & SHF_COMPRESSED
))
2067 if (get_elf_backend_data (abfd
)->s
->elfclass
== ELFCLASS32
)
2068 return sizeof (Elf32_External_Chdr
);
2070 return sizeof (Elf64_External_Chdr
);
2078 bfd_convert_section_size
2081 bfd_size_type bfd_convert_section_size
2082 (bfd *ibfd, asection *isec, bfd *obfd, bfd_size_type size);
2085 Convert the size @var{size} of the section @var{isec} in input
2086 BFD @var{ibfd} to the section size in output BFD @var{obfd}.
2090 bfd_convert_section_size (bfd
*ibfd
, sec_ptr isec
, bfd
*obfd
,
2093 bfd_size_type hdr_size
;
2095 /* Do nothing if input file will be decompressed. */
2096 if ((ibfd
->flags
& BFD_DECOMPRESS
))
2099 /* Do nothing if either input or output aren't ELF. */
2100 if (bfd_get_flavour (ibfd
) != bfd_target_elf_flavour
2101 || bfd_get_flavour (obfd
) != bfd_target_elf_flavour
)
2104 /* Do nothing if ELF classes of input and output are the same. */
2105 if (get_elf_backend_data (ibfd
)->s
->elfclass
2106 == get_elf_backend_data (obfd
)->s
->elfclass
)
2109 /* Do nothing if the input section isn't a SHF_COMPRESSED section. */
2110 hdr_size
= bfd_get_compression_header_size (ibfd
, isec
);
2114 /* Adjust the size of the output SHF_COMPRESSED section. */
2115 if (hdr_size
== sizeof (Elf32_External_Chdr
))
2116 return (size
- sizeof (Elf32_External_Chdr
)
2117 + sizeof (Elf64_External_Chdr
));
2119 return (size
- sizeof (Elf64_External_Chdr
)
2120 + sizeof (Elf32_External_Chdr
));
2125 bfd_convert_section_contents
2128 bfd_boolean bfd_convert_section_contents
2129 (bfd *ibfd, asection *isec, bfd *obfd,
2130 bfd_byte **ptr, bfd_size_type *ptr_size);
2133 Convert the contents, stored in @var{*ptr}, of the section
2134 @var{isec} in input BFD @var{ibfd} to output BFD @var{obfd}
2135 if needed. The original buffer pointed to by @var{*ptr} may
2136 be freed and @var{*ptr} is returned with memory malloc'd by this
2137 function, and the new size written to @var{ptr_size}.
2141 bfd_convert_section_contents (bfd
*ibfd
, sec_ptr isec
, bfd
*obfd
,
2142 bfd_byte
**ptr
, bfd_size_type
*ptr_size
)
2145 bfd_size_type ihdr_size
, ohdr_size
, size
;
2146 Elf_Internal_Chdr chdr
;
2147 bfd_boolean use_memmove
;
2149 /* Do nothing if input file will be decompressed. */
2150 if ((ibfd
->flags
& BFD_DECOMPRESS
))
2153 /* Do nothing if either input or output aren't ELF. */
2154 if (bfd_get_flavour (ibfd
) != bfd_target_elf_flavour
2155 || bfd_get_flavour (obfd
) != bfd_target_elf_flavour
)
2158 /* Do nothing if ELF classes of input and output are the same. */
2159 if (get_elf_backend_data (ibfd
)->s
->elfclass
2160 == get_elf_backend_data (obfd
)->s
->elfclass
)
2163 /* Do nothing if the input section isn't a SHF_COMPRESSED section. */
2164 ihdr_size
= bfd_get_compression_header_size (ibfd
, isec
);
2170 /* Convert the contents of the input SHF_COMPRESSED section to
2171 output. Get the input compression header and the size of the
2172 output compression header. */
2173 if (ihdr_size
== sizeof (Elf32_External_Chdr
))
2175 Elf32_External_Chdr
*echdr
= (Elf32_External_Chdr
*) contents
;
2176 chdr
.ch_type
= bfd_get_32 (ibfd
, &echdr
->ch_type
);
2177 chdr
.ch_size
= bfd_get_32 (ibfd
, &echdr
->ch_size
);
2178 chdr
.ch_addralign
= bfd_get_32 (ibfd
, &echdr
->ch_addralign
);
2180 ohdr_size
= sizeof (Elf64_External_Chdr
);
2182 use_memmove
= FALSE
;
2186 Elf64_External_Chdr
*echdr
= (Elf64_External_Chdr
*) contents
;
2187 chdr
.ch_type
= bfd_get_32 (ibfd
, &echdr
->ch_type
);
2188 chdr
.ch_size
= bfd_get_64 (ibfd
, &echdr
->ch_size
);
2189 chdr
.ch_addralign
= bfd_get_64 (ibfd
, &echdr
->ch_addralign
);
2191 ohdr_size
= sizeof (Elf32_External_Chdr
);
2195 size
= bfd_get_section_size (isec
) - ihdr_size
+ ohdr_size
;
2198 contents
= (bfd_byte
*) bfd_malloc (size
);
2199 if (contents
== NULL
)
2203 /* Write out the output compression header. */
2204 if (ohdr_size
== sizeof (Elf32_External_Chdr
))
2206 Elf32_External_Chdr
*echdr
= (Elf32_External_Chdr
*) contents
;
2207 bfd_put_32 (obfd
, ELFCOMPRESS_ZLIB
, &echdr
->ch_type
);
2208 bfd_put_32 (obfd
, chdr
.ch_size
, &echdr
->ch_size
);
2209 bfd_put_32 (obfd
, chdr
.ch_addralign
, &echdr
->ch_addralign
);
2213 Elf64_External_Chdr
*echdr
= (Elf64_External_Chdr
*) contents
;
2214 bfd_put_32 (obfd
, ELFCOMPRESS_ZLIB
, &echdr
->ch_type
);
2215 bfd_put_32 (obfd
, 0, &echdr
->ch_reserved
);
2216 bfd_put_64 (obfd
, chdr
.ch_size
, &echdr
->ch_size
);
2217 bfd_put_64 (obfd
, chdr
.ch_addralign
, &echdr
->ch_addralign
);
2220 /* Copy the compressed contents. */
2222 memmove (contents
+ ohdr_size
, *ptr
+ ihdr_size
, size
- ohdr_size
);
2225 memcpy (contents
+ ohdr_size
, *ptr
+ ihdr_size
, size
- ohdr_size
);