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_uknown = 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 printf.
605 .typedef void (*bfd_error_handler_type) (const char *, ...);
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 _bfd_default_error_handler (const char *fmt
, ...)
642 const char *new_fmt
, *p
;
646 /* PR 4992: Don't interrupt output being sent to stdout. */
649 if (_bfd_error_program_name
!= NULL
)
650 fprintf (stderr
, "%s: ", _bfd_error_program_name
);
652 fprintf (stderr
, "BFD: ");
658 /* Reserve enough space for the existing format string. */
659 avail
-= strlen (fmt
) + 1;
661 _exit (EXIT_FAILURE
);
667 size_t len
, extra
, trim
;
670 if (p
== NULL
|| p
[1] == '\0')
675 memcpy (bufp
, fmt
, len
+ 1);
680 if (p
[1] == 'A' || p
[1] == 'B')
683 memcpy (bufp
, fmt
, len
);
688 /* If we run out of space, tough, you lose your ridiculously
689 long file or section name. It's not safe to try to alloc
690 memory here; We might be printing an out of memory message. */
701 bfd
*abfd
= va_arg (ap
, bfd
*);
704 /* Invoking %B with a null bfd pointer is an internal error. */
706 else if (abfd
->my_archive
)
707 snprintf (bufp
, avail
, "%s(%s)",
708 abfd
->my_archive
->filename
, abfd
->filename
);
710 snprintf (bufp
, avail
, "%s", abfd
->filename
);
714 asection
*sec
= va_arg (ap
, asection
*);
716 const char *group
= NULL
;
717 struct coff_comdat_info
*ci
;
720 /* Invoking %A with a null section pointer is an internal error. */
724 && bfd_get_flavour (abfd
) == bfd_target_elf_flavour
725 && elf_next_in_group (sec
) != NULL
726 && (sec
->flags
& SEC_GROUP
) == 0)
727 group
= elf_group_name (sec
);
728 else if (abfd
!= NULL
729 && bfd_get_flavour (abfd
) == bfd_target_coff_flavour
730 && (ci
= bfd_coff_get_comdat_section (sec
->owner
,
734 snprintf (bufp
, avail
, "%s[%s]", sec
->name
, group
);
736 snprintf (bufp
, avail
, "%s", sec
->name
);
739 avail
= avail
- len
+ 2;
741 /* We need to replace any '%' we printed by "%%".
742 First count how many. */
746 while ((q
= strchr (q
, '%')) != NULL
)
752 /* If there isn't room, trim off the end of the string. */
757 trim
= extra
- avail
;
770 /* Now double all '%' chars, shuffling the string as we go. */
773 while ((q
[extra
] = *q
) != '%')
783 vfprintf (stderr
, new_fmt
, ap
);
786 /* On AIX, putc is implemented as a macro that triggers a -Wunused-value
787 warning, so use the fputc function to avoid it. */
788 fputc ('\n', stderr
);
792 /* This is a function pointer to the routine which should handle BFD
793 error messages. It is called when a BFD routine encounters an
794 error for which it wants to print a message. Going through a
795 function pointer permits a program linked against BFD to intercept
796 the messages and deal with them itself. */
798 bfd_error_handler_type _bfd_error_handler
= _bfd_default_error_handler
;
802 bfd_set_error_handler
805 bfd_error_handler_type bfd_set_error_handler (bfd_error_handler_type);
808 Set the BFD error handler function. Returns the previous
812 bfd_error_handler_type
813 bfd_set_error_handler (bfd_error_handler_type pnew
)
815 bfd_error_handler_type pold
;
817 pold
= _bfd_error_handler
;
818 _bfd_error_handler
= pnew
;
824 bfd_set_error_program_name
827 void bfd_set_error_program_name (const char *);
830 Set the program name to use when printing a BFD error. This
831 is printed before the error message followed by a colon and
832 space. The string must not be changed after it is passed to
837 bfd_set_error_program_name (const char *name
)
839 _bfd_error_program_name
= name
;
844 bfd_get_error_handler
847 bfd_error_handler_type bfd_get_error_handler (void);
850 Return the BFD error handler function.
853 bfd_error_handler_type
854 bfd_get_error_handler (void)
856 return _bfd_error_handler
;
863 If BFD finds an internal inconsistency, the bfd assert
864 handler is called with information on the BFD version, BFD
865 source file and line. If this happens, most programs linked
866 against BFD are expected to want to exit with an error, or mark
867 the current BFD operation as failed, so it is recommended to
868 override the default handler, which just calls
869 _bfd_error_handler and continues.
873 .typedef void (*bfd_assert_handler_type) (const char *bfd_formatmsg,
874 . const char *bfd_version,
875 . const char *bfd_file,
880 /* Note the use of bfd_ prefix on the parameter names above: we want to
881 show which one is the message and which is the version by naming the
882 parameters, but avoid polluting the program-using-bfd namespace as
883 the typedef is visible in the exported headers that the program
884 includes. Below, it's just for consistency. */
887 _bfd_default_assert_handler (const char *bfd_formatmsg
,
888 const char *bfd_version
,
889 const char *bfd_file
,
893 (*_bfd_error_handler
) (bfd_formatmsg
, bfd_version
, bfd_file
, bfd_line
);
896 /* Similar to _bfd_error_handler, a program can decide to exit on an
897 internal BFD error. We use a non-variadic type to simplify passing
898 on parameters to other functions, e.g. _bfd_error_handler. */
900 bfd_assert_handler_type _bfd_assert_handler
= _bfd_default_assert_handler
;
904 bfd_set_assert_handler
907 bfd_assert_handler_type bfd_set_assert_handler (bfd_assert_handler_type);
910 Set the BFD assert handler function. Returns the previous
914 bfd_assert_handler_type
915 bfd_set_assert_handler (bfd_assert_handler_type pnew
)
917 bfd_assert_handler_type pold
;
919 pold
= _bfd_assert_handler
;
920 _bfd_assert_handler
= pnew
;
926 bfd_get_assert_handler
929 bfd_assert_handler_type bfd_get_assert_handler (void);
932 Return the BFD assert handler function.
935 bfd_assert_handler_type
936 bfd_get_assert_handler (void)
938 return _bfd_assert_handler
;
943 Miscellaneous, Memory Usage, Error reporting, BFD front end
949 Miscellaneous functions
954 bfd_get_reloc_upper_bound
957 long bfd_get_reloc_upper_bound (bfd *abfd, asection *sect);
960 Return the number of bytes required to store the
961 relocation information associated with section @var{sect}
962 attached to bfd @var{abfd}. If an error occurs, return -1.
967 bfd_get_reloc_upper_bound (bfd
*abfd
, sec_ptr asect
)
969 if (abfd
->format
!= bfd_object
)
971 bfd_set_error (bfd_error_invalid_operation
);
975 return BFD_SEND (abfd
, _get_reloc_upper_bound
, (abfd
, asect
));
980 bfd_canonicalize_reloc
983 long bfd_canonicalize_reloc
984 (bfd *abfd, asection *sec, arelent **loc, asymbol **syms);
987 Call the back end associated with the open BFD
988 @var{abfd} and translate the external form of the relocation
989 information attached to @var{sec} into the internal canonical
990 form. Place the table into memory at @var{loc}, which has
991 been preallocated, usually by a call to
992 <<bfd_get_reloc_upper_bound>>. Returns the number of relocs, or
995 The @var{syms} table is also needed for horrible internal magic
1000 bfd_canonicalize_reloc (bfd
*abfd
,
1005 if (abfd
->format
!= bfd_object
)
1007 bfd_set_error (bfd_error_invalid_operation
);
1011 return BFD_SEND (abfd
, _bfd_canonicalize_reloc
,
1012 (abfd
, asect
, location
, symbols
));
1021 (bfd *abfd, asection *sec, arelent **rel, unsigned int count);
1024 Set the relocation pointer and count within
1025 section @var{sec} to the values @var{rel} and @var{count}.
1026 The argument @var{abfd} is ignored.
1031 bfd_set_reloc (bfd
*ignore_abfd ATTRIBUTE_UNUSED
,
1036 asect
->orelocation
= location
;
1037 asect
->reloc_count
= count
;
1045 bfd_boolean bfd_set_file_flags (bfd *abfd, flagword flags);
1048 Set the flag word in the BFD @var{abfd} to the value @var{flags}.
1050 Possible errors are:
1051 o <<bfd_error_wrong_format>> - The target bfd was not of object format.
1052 o <<bfd_error_invalid_operation>> - The target bfd was open for reading.
1053 o <<bfd_error_invalid_operation>> -
1054 The flag word contained a bit which was not applicable to the
1055 type of file. E.g., an attempt was made to set the <<D_PAGED>> bit
1056 on a BFD format which does not support demand paging.
1061 bfd_set_file_flags (bfd
*abfd
, flagword flags
)
1063 if (abfd
->format
!= bfd_object
)
1065 bfd_set_error (bfd_error_wrong_format
);
1069 if (bfd_read_p (abfd
))
1071 bfd_set_error (bfd_error_invalid_operation
);
1075 bfd_get_file_flags (abfd
) = flags
;
1076 if ((flags
& bfd_applicable_file_flags (abfd
)) != flags
)
1078 bfd_set_error (bfd_error_invalid_operation
);
1086 bfd_assert (const char *file
, int line
)
1088 (*_bfd_assert_handler
) (_("BFD %s assertion fail %s:%d"),
1089 BFD_VERSION_STRING
, file
, line
);
1092 /* A more or less friendly abort message. In libbfd.h abort is
1093 defined to call this function. */
1096 _bfd_abort (const char *file
, int line
, const char *fn
)
1099 (*_bfd_error_handler
)
1100 (_("BFD %s internal error, aborting at %s:%d in %s\n"),
1101 BFD_VERSION_STRING
, file
, line
, fn
);
1103 (*_bfd_error_handler
)
1104 (_("BFD %s internal error, aborting at %s:%d\n"),
1105 BFD_VERSION_STRING
, file
, line
);
1106 (*_bfd_error_handler
) (_("Please report this bug.\n"));
1107 _exit (EXIT_FAILURE
);
1115 int bfd_get_arch_size (bfd *abfd);
1118 Returns the normalized architecture address size, in bits, as
1119 determined by the object file's format. By normalized, we mean
1120 either 32 or 64. For ELF, this information is included in the
1121 header. Use bfd_arch_bits_per_address for number of bits in
1122 the architecture address.
1125 Returns the arch size in bits if known, <<-1>> otherwise.
1129 bfd_get_arch_size (bfd
*abfd
)
1131 if (abfd
->xvec
->flavour
== bfd_target_elf_flavour
)
1132 return get_elf_backend_data (abfd
)->s
->arch_size
;
1134 return bfd_arch_bits_per_address (abfd
) > 32 ? 64 : 32;
1139 bfd_get_sign_extend_vma
1142 int bfd_get_sign_extend_vma (bfd *abfd);
1145 Indicates if the target architecture "naturally" sign extends
1146 an address. Some architectures implicitly sign extend address
1147 values when they are converted to types larger than the size
1148 of an address. For instance, bfd_get_start_address() will
1149 return an address sign extended to fill a bfd_vma when this is
1153 Returns <<1>> if the target architecture is known to sign
1154 extend addresses, <<0>> if the target architecture is known to
1155 not sign extend addresses, and <<-1>> otherwise.
1159 bfd_get_sign_extend_vma (bfd
*abfd
)
1163 if (bfd_get_flavour (abfd
) == bfd_target_elf_flavour
)
1164 return get_elf_backend_data (abfd
)->sign_extend_vma
;
1166 name
= bfd_get_target (abfd
);
1168 /* Return a proper value for DJGPP & PE COFF.
1169 This function is required for DWARF2 support, but there is
1170 no place to store this information in the COFF back end.
1171 Should enough other COFF targets add support for DWARF2,
1172 a place will have to be found. Until then, this hack will do. */
1173 if (CONST_STRNEQ (name
, "coff-go32")
1174 || strcmp (name
, "pe-i386") == 0
1175 || strcmp (name
, "pei-i386") == 0
1176 || strcmp (name
, "pe-x86-64") == 0
1177 || strcmp (name
, "pei-x86-64") == 0
1178 || strcmp (name
, "pe-arm-wince-little") == 0
1179 || strcmp (name
, "pei-arm-wince-little") == 0
1180 || strcmp (name
, "aixcoff-rs6000") == 0)
1183 if (CONST_STRNEQ (name
, "mach-o"))
1186 bfd_set_error (bfd_error_wrong_format
);
1192 bfd_set_start_address
1195 bfd_boolean bfd_set_start_address (bfd *abfd, bfd_vma vma);
1198 Make @var{vma} the entry point of output BFD @var{abfd}.
1201 Returns <<TRUE>> on success, <<FALSE>> otherwise.
1205 bfd_set_start_address (bfd
*abfd
, bfd_vma vma
)
1207 abfd
->start_address
= vma
;
1216 unsigned int bfd_get_gp_size (bfd *abfd);
1219 Return the maximum size of objects to be optimized using the GP
1220 register under MIPS ECOFF. This is typically set by the <<-G>>
1221 argument to the compiler, assembler or linker.
1225 bfd_get_gp_size (bfd
*abfd
)
1227 if (abfd
->format
== bfd_object
)
1229 if (abfd
->xvec
->flavour
== bfd_target_ecoff_flavour
)
1230 return ecoff_data (abfd
)->gp_size
;
1231 else if (abfd
->xvec
->flavour
== bfd_target_elf_flavour
)
1232 return elf_gp_size (abfd
);
1242 void bfd_set_gp_size (bfd *abfd, unsigned int i);
1245 Set the maximum size of objects to be optimized using the GP
1246 register under ECOFF or MIPS ELF. This is typically set by
1247 the <<-G>> argument to the compiler, assembler or linker.
1251 bfd_set_gp_size (bfd
*abfd
, unsigned int i
)
1253 /* Don't try to set GP size on an archive or core file! */
1254 if (abfd
->format
!= bfd_object
)
1257 if (abfd
->xvec
->flavour
== bfd_target_ecoff_flavour
)
1258 ecoff_data (abfd
)->gp_size
= i
;
1259 else if (abfd
->xvec
->flavour
== bfd_target_elf_flavour
)
1260 elf_gp_size (abfd
) = i
;
1263 /* Get the GP value. This is an internal function used by some of the
1264 relocation special_function routines on targets which support a GP
1268 _bfd_get_gp_value (bfd
*abfd
)
1272 if (abfd
->format
!= bfd_object
)
1275 if (abfd
->xvec
->flavour
== bfd_target_ecoff_flavour
)
1276 return ecoff_data (abfd
)->gp
;
1277 else if (abfd
->xvec
->flavour
== bfd_target_elf_flavour
)
1278 return elf_gp (abfd
);
1283 /* Set the GP value. */
1286 _bfd_set_gp_value (bfd
*abfd
, bfd_vma v
)
1290 if (abfd
->format
!= bfd_object
)
1293 if (abfd
->xvec
->flavour
== bfd_target_ecoff_flavour
)
1294 ecoff_data (abfd
)->gp
= v
;
1295 else if (abfd
->xvec
->flavour
== bfd_target_elf_flavour
)
1304 bfd_vma bfd_scan_vma (const char *string, const char **end, int base);
1307 Convert, like <<strtoul>>, a numerical expression
1308 @var{string} into a <<bfd_vma>> integer, and return that integer.
1309 (Though without as many bells and whistles as <<strtoul>>.)
1310 The expression is assumed to be unsigned (i.e., positive).
1311 If given a @var{base}, it is used as the base for conversion.
1312 A base of 0 causes the function to interpret the string
1313 in hex if a leading "0x" or "0X" is found, otherwise
1314 in octal if a leading zero is found, otherwise in decimal.
1316 If the value would overflow, the maximum <<bfd_vma>> value is
1321 bfd_scan_vma (const char *string
, const char **end
, int base
)
1325 unsigned int cutlim
;
1328 /* Let the host do it if possible. */
1329 if (sizeof (bfd_vma
) <= sizeof (unsigned long))
1330 return strtoul (string
, (char **) end
, base
);
1332 #ifdef HAVE_STRTOULL
1333 if (sizeof (bfd_vma
) <= sizeof (unsigned long long))
1334 return strtoull (string
, (char **) end
, base
);
1339 if (string
[0] == '0')
1341 if ((string
[1] == 'x') || (string
[1] == 'X'))
1348 if ((base
< 2) || (base
> 36))
1353 && (string
[1] == 'x' || string
[1] == 'X')
1354 && ISXDIGIT (string
[2]))
1359 cutoff
= (~ (bfd_vma
) 0) / (bfd_vma
) base
;
1360 cutlim
= (~ (bfd_vma
) 0) % (bfd_vma
) base
;
1368 if (ISDIGIT (digit
))
1369 digit
= digit
- '0';
1370 else if (ISALPHA (digit
))
1371 digit
= TOUPPER (digit
) - 'A' + 10;
1374 if (digit
>= (unsigned int) base
)
1376 if (value
> cutoff
|| (value
== cutoff
&& digit
> cutlim
))
1378 value
= value
* base
+ digit
;
1383 value
= ~ (bfd_vma
) 0;
1393 bfd_copy_private_header_data
1396 bfd_boolean bfd_copy_private_header_data (bfd *ibfd, bfd *obfd);
1399 Copy private BFD header information from the BFD @var{ibfd} to the
1400 the BFD @var{obfd}. This copies information that may require
1401 sections to exist, but does not require symbol tables. Return
1402 <<true>> on success, <<false>> on error.
1403 Possible error returns are:
1405 o <<bfd_error_no_memory>> -
1406 Not enough memory exists to create private data for @var{obfd}.
1408 .#define bfd_copy_private_header_data(ibfd, obfd) \
1409 . BFD_SEND (obfd, _bfd_copy_private_header_data, \
1416 bfd_copy_private_bfd_data
1419 bfd_boolean bfd_copy_private_bfd_data (bfd *ibfd, bfd *obfd);
1422 Copy private BFD information from the BFD @var{ibfd} to the
1423 the BFD @var{obfd}. Return <<TRUE>> on success, <<FALSE>> on error.
1424 Possible error returns are:
1426 o <<bfd_error_no_memory>> -
1427 Not enough memory exists to create private data for @var{obfd}.
1429 .#define bfd_copy_private_bfd_data(ibfd, obfd) \
1430 . BFD_SEND (obfd, _bfd_copy_private_bfd_data, \
1437 bfd_merge_private_bfd_data
1440 bfd_boolean bfd_merge_private_bfd_data (bfd *ibfd, bfd *obfd);
1443 Merge private BFD information from the BFD @var{ibfd} to the
1444 the output file BFD @var{obfd} when linking. Return <<TRUE>>
1445 on success, <<FALSE>> on error. Possible error returns are:
1447 o <<bfd_error_no_memory>> -
1448 Not enough memory exists to create private data for @var{obfd}.
1450 .#define bfd_merge_private_bfd_data(ibfd, obfd) \
1451 . BFD_SEND (obfd, _bfd_merge_private_bfd_data, \
1458 bfd_set_private_flags
1461 bfd_boolean bfd_set_private_flags (bfd *abfd, flagword flags);
1464 Set private BFD flag information in the BFD @var{abfd}.
1465 Return <<TRUE>> on success, <<FALSE>> on error. Possible error
1468 o <<bfd_error_no_memory>> -
1469 Not enough memory exists to create private data for @var{obfd}.
1471 .#define bfd_set_private_flags(abfd, flags) \
1472 . BFD_SEND (abfd, _bfd_set_private_flags, (abfd, flags))
1481 The following functions exist but have not yet been documented.
1483 .#define bfd_sizeof_headers(abfd, info) \
1484 . BFD_SEND (abfd, _bfd_sizeof_headers, (abfd, info))
1486 .#define bfd_find_nearest_line(abfd, sec, syms, off, file, func, line) \
1487 . BFD_SEND (abfd, _bfd_find_nearest_line, \
1488 . (abfd, syms, sec, off, file, func, line, NULL))
1490 .#define bfd_find_nearest_line_discriminator(abfd, sec, syms, off, file, func, \
1492 . BFD_SEND (abfd, _bfd_find_nearest_line, \
1493 . (abfd, syms, sec, off, file, func, line, disc))
1495 .#define bfd_find_line(abfd, syms, sym, file, line) \
1496 . BFD_SEND (abfd, _bfd_find_line, \
1497 . (abfd, syms, sym, file, line))
1499 .#define bfd_find_inliner_info(abfd, file, func, line) \
1500 . BFD_SEND (abfd, _bfd_find_inliner_info, \
1501 . (abfd, file, func, line))
1503 .#define bfd_debug_info_start(abfd) \
1504 . BFD_SEND (abfd, _bfd_debug_info_start, (abfd))
1506 .#define bfd_debug_info_end(abfd) \
1507 . BFD_SEND (abfd, _bfd_debug_info_end, (abfd))
1509 .#define bfd_debug_info_accumulate(abfd, section) \
1510 . BFD_SEND (abfd, _bfd_debug_info_accumulate, (abfd, section))
1512 .#define bfd_stat_arch_elt(abfd, stat) \
1513 . BFD_SEND (abfd, _bfd_stat_arch_elt,(abfd, stat))
1515 .#define bfd_update_armap_timestamp(abfd) \
1516 . BFD_SEND (abfd, _bfd_update_armap_timestamp, (abfd))
1518 .#define bfd_set_arch_mach(abfd, arch, mach)\
1519 . BFD_SEND ( abfd, _bfd_set_arch_mach, (abfd, arch, mach))
1521 .#define bfd_relax_section(abfd, section, link_info, again) \
1522 . BFD_SEND (abfd, _bfd_relax_section, (abfd, section, link_info, again))
1524 .#define bfd_gc_sections(abfd, link_info) \
1525 . BFD_SEND (abfd, _bfd_gc_sections, (abfd, link_info))
1527 .#define bfd_lookup_section_flags(link_info, flag_info, section) \
1528 . BFD_SEND (abfd, _bfd_lookup_section_flags, (link_info, flag_info, section))
1530 .#define bfd_merge_sections(abfd, link_info) \
1531 . BFD_SEND (abfd, _bfd_merge_sections, (abfd, link_info))
1533 .#define bfd_is_group_section(abfd, sec) \
1534 . BFD_SEND (abfd, _bfd_is_group_section, (abfd, sec))
1536 .#define bfd_discard_group(abfd, sec) \
1537 . BFD_SEND (abfd, _bfd_discard_group, (abfd, sec))
1539 .#define bfd_link_hash_table_create(abfd) \
1540 . BFD_SEND (abfd, _bfd_link_hash_table_create, (abfd))
1542 .#define bfd_link_add_symbols(abfd, info) \
1543 . BFD_SEND (abfd, _bfd_link_add_symbols, (abfd, info))
1545 .#define bfd_link_just_syms(abfd, sec, info) \
1546 . BFD_SEND (abfd, _bfd_link_just_syms, (sec, info))
1548 .#define bfd_final_link(abfd, info) \
1549 . BFD_SEND (abfd, _bfd_final_link, (abfd, info))
1551 .#define bfd_free_cached_info(abfd) \
1552 . BFD_SEND (abfd, _bfd_free_cached_info, (abfd))
1554 .#define bfd_get_dynamic_symtab_upper_bound(abfd) \
1555 . BFD_SEND (abfd, _bfd_get_dynamic_symtab_upper_bound, (abfd))
1557 .#define bfd_print_private_bfd_data(abfd, file)\
1558 . BFD_SEND (abfd, _bfd_print_private_bfd_data, (abfd, file))
1560 .#define bfd_canonicalize_dynamic_symtab(abfd, asymbols) \
1561 . BFD_SEND (abfd, _bfd_canonicalize_dynamic_symtab, (abfd, asymbols))
1563 .#define bfd_get_synthetic_symtab(abfd, count, syms, dyncount, dynsyms, ret) \
1564 . BFD_SEND (abfd, _bfd_get_synthetic_symtab, (abfd, count, syms, \
1565 . dyncount, dynsyms, ret))
1567 .#define bfd_get_dynamic_reloc_upper_bound(abfd) \
1568 . BFD_SEND (abfd, _bfd_get_dynamic_reloc_upper_bound, (abfd))
1570 .#define bfd_canonicalize_dynamic_reloc(abfd, arels, asyms) \
1571 . BFD_SEND (abfd, _bfd_canonicalize_dynamic_reloc, (abfd, arels, asyms))
1573 .extern bfd_byte *bfd_get_relocated_section_contents
1574 . (bfd *, struct bfd_link_info *, struct bfd_link_order *, bfd_byte *,
1575 . bfd_boolean, asymbol **);
1581 bfd_get_relocated_section_contents (bfd
*abfd
,
1582 struct bfd_link_info
*link_info
,
1583 struct bfd_link_order
*link_order
,
1585 bfd_boolean relocatable
,
1589 bfd_byte
*(*fn
) (bfd
*, struct bfd_link_info
*, struct bfd_link_order
*,
1590 bfd_byte
*, bfd_boolean
, asymbol
**);
1592 if (link_order
->type
== bfd_indirect_link_order
)
1594 abfd2
= link_order
->u
.indirect
.section
->owner
;
1601 fn
= abfd2
->xvec
->_bfd_get_relocated_section_contents
;
1603 return (*fn
) (abfd
, link_info
, link_order
, data
, relocatable
, symbols
);
1606 /* Record information about an ELF program header. */
1609 bfd_record_phdr (bfd
*abfd
,
1611 bfd_boolean flags_valid
,
1613 bfd_boolean at_valid
,
1615 bfd_boolean includes_filehdr
,
1616 bfd_boolean includes_phdrs
,
1620 struct elf_segment_map
*m
, **pm
;
1623 if (bfd_get_flavour (abfd
) != bfd_target_elf_flavour
)
1626 amt
= sizeof (struct elf_segment_map
);
1627 amt
+= ((bfd_size_type
) count
- 1) * sizeof (asection
*);
1628 m
= (struct elf_segment_map
*) bfd_zalloc (abfd
, amt
);
1635 m
->p_flags_valid
= flags_valid
;
1636 m
->p_paddr_valid
= at_valid
;
1637 m
->includes_filehdr
= includes_filehdr
;
1638 m
->includes_phdrs
= includes_phdrs
;
1641 memcpy (m
->sections
, secs
, count
* sizeof (asection
*));
1643 for (pm
= &elf_seg_map (abfd
); *pm
!= NULL
; pm
= &(*pm
)->next
)
1651 /* Return true iff this target is 32-bit. */
1656 if (bfd_get_flavour (abfd
) == bfd_target_elf_flavour
)
1658 const struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
1659 return bed
->s
->elfclass
== ELFCLASS32
;
1662 /* For non-ELF targets, use architecture information. */
1663 return bfd_arch_bits_per_address (abfd
) <= 32;
1667 /* bfd_sprintf_vma and bfd_fprintf_vma display an address in the
1668 target's address size. */
1671 bfd_sprintf_vma (bfd
*abfd ATTRIBUTE_UNUSED
, char *buf
, bfd_vma value
)
1676 sprintf (buf
, "%08lx", (unsigned long) value
& 0xffffffff);
1680 sprintf_vma (buf
, value
);
1684 bfd_fprintf_vma (bfd
*abfd ATTRIBUTE_UNUSED
, void *stream
, bfd_vma value
)
1689 fprintf ((FILE *) stream
, "%08lx", (unsigned long) value
& 0xffffffff);
1693 fprintf_vma ((FILE *) stream
, value
);
1701 bfd_boolean bfd_alt_mach_code (bfd *abfd, int alternative);
1705 When more than one machine code number is available for the
1706 same machine type, this function can be used to switch between
1707 the preferred one (alternative == 0) and any others. Currently,
1708 only ELF supports this feature, with up to two alternate
1713 bfd_alt_mach_code (bfd
*abfd
, int alternative
)
1715 if (bfd_get_flavour (abfd
) == bfd_target_elf_flavour
)
1719 switch (alternative
)
1722 code
= get_elf_backend_data (abfd
)->elf_machine_code
;
1726 code
= get_elf_backend_data (abfd
)->elf_machine_alt1
;
1732 code
= get_elf_backend_data (abfd
)->elf_machine_alt2
;
1741 elf_elfheader (abfd
)->e_machine
= code
;
1751 bfd_emul_get_maxpagesize
1754 bfd_vma bfd_emul_get_maxpagesize (const char *);
1757 Returns the maximum page size, in bytes, as determined by
1761 Returns the maximum page size in bytes for ELF, 0 otherwise.
1765 bfd_emul_get_maxpagesize (const char *emul
)
1767 const bfd_target
*target
;
1769 target
= bfd_find_target (emul
, NULL
);
1771 && target
->flavour
== bfd_target_elf_flavour
)
1772 return xvec_get_elf_backend_data (target
)->maxpagesize
;
1778 bfd_elf_set_pagesize (const bfd_target
*target
, bfd_vma size
,
1779 int offset
, const bfd_target
*orig_target
)
1781 if (target
->flavour
== bfd_target_elf_flavour
)
1783 const struct elf_backend_data
*bed
;
1785 bed
= xvec_get_elf_backend_data (target
);
1786 *((bfd_vma
*) ((char *) bed
+ offset
)) = size
;
1789 if (target
->alternative_target
1790 && target
->alternative_target
!= orig_target
)
1791 bfd_elf_set_pagesize (target
->alternative_target
, size
, offset
,
1797 bfd_emul_set_maxpagesize
1800 void bfd_emul_set_maxpagesize (const char *, bfd_vma);
1803 For ELF, set the maximum page size for the emulation. It is
1804 a no-op for other formats.
1809 bfd_emul_set_maxpagesize (const char *emul
, bfd_vma size
)
1811 const bfd_target
*target
;
1813 target
= bfd_find_target (emul
, NULL
);
1815 bfd_elf_set_pagesize (target
, size
,
1816 offsetof (struct elf_backend_data
,
1817 maxpagesize
), target
);
1822 bfd_emul_get_commonpagesize
1825 bfd_vma bfd_emul_get_commonpagesize (const char *);
1828 Returns the common page size, in bytes, as determined by
1832 Returns the common page size in bytes for ELF, 0 otherwise.
1836 bfd_emul_get_commonpagesize (const char *emul
)
1838 const bfd_target
*target
;
1840 target
= bfd_find_target (emul
, NULL
);
1842 && target
->flavour
== bfd_target_elf_flavour
)
1843 return xvec_get_elf_backend_data (target
)->commonpagesize
;
1850 bfd_emul_set_commonpagesize
1853 void bfd_emul_set_commonpagesize (const char *, bfd_vma);
1856 For ELF, set the common page size for the emulation. It is
1857 a no-op for other formats.
1862 bfd_emul_set_commonpagesize (const char *emul
, bfd_vma size
)
1864 const bfd_target
*target
;
1866 target
= bfd_find_target (emul
, NULL
);
1868 bfd_elf_set_pagesize (target
, size
,
1869 offsetof (struct elf_backend_data
,
1870 commonpagesize
), target
);
1878 char *bfd_demangle (bfd *, const char *, int);
1881 Wrapper around cplus_demangle. Strips leading underscores and
1882 other such chars that would otherwise confuse the demangler.
1883 If passed a g++ v3 ABI mangled name, returns a buffer allocated
1884 with malloc holding the demangled name. Returns NULL otherwise
1885 and on memory alloc failure.
1889 bfd_demangle (bfd
*abfd
, const char *name
, int options
)
1892 const char *pre
, *suf
;
1894 bfd_boolean skip_lead
;
1896 skip_lead
= (abfd
!= NULL
1898 && bfd_get_symbol_leading_char (abfd
) == *name
);
1902 /* This is a hack for better error reporting on XCOFF, PowerPC64-ELF
1903 or the MS PE format. These formats have a number of leading '.'s
1904 on at least some symbols, so we remove all dots to avoid
1905 confusing the demangler. */
1907 while (*name
== '.' || *name
== '$')
1909 pre_len
= name
- pre
;
1911 /* Strip off @plt and suchlike too. */
1913 suf
= strchr (name
, '@');
1916 alloc
= (char *) bfd_malloc (suf
- name
+ 1);
1919 memcpy (alloc
, name
, suf
- name
);
1920 alloc
[suf
- name
] = '\0';
1924 res
= cplus_demangle (name
, options
);
1933 size_t len
= strlen (pre
) + 1;
1934 alloc
= (char *) bfd_malloc (len
);
1937 memcpy (alloc
, pre
, len
);
1943 /* Put back any prefix or suffix. */
1944 if (pre_len
!= 0 || suf
!= NULL
)
1953 suf_len
= strlen (suf
) + 1;
1954 final
= (char *) bfd_malloc (pre_len
+ len
+ suf_len
);
1957 memcpy (final
, pre
, pre_len
);
1958 memcpy (final
+ pre_len
, res
, len
);
1959 memcpy (final
+ pre_len
+ len
, suf
, suf_len
);
1970 bfd_update_compression_header
1973 void bfd_update_compression_header
1974 (bfd *abfd, bfd_byte *contents, asection *sec);
1977 Set the compression header at CONTENTS of SEC in ABFD and update
1978 elf_section_flags for compression.
1982 bfd_update_compression_header (bfd
*abfd
, bfd_byte
*contents
,
1985 if ((abfd
->flags
& BFD_COMPRESS
) != 0)
1987 if (bfd_get_flavour (abfd
) == bfd_target_elf_flavour
)
1989 if ((abfd
->flags
& BFD_COMPRESS_GABI
) != 0)
1991 const struct elf_backend_data
*bed
1992 = get_elf_backend_data (abfd
);
1994 /* Set the SHF_COMPRESSED bit. */
1995 elf_section_flags (sec
) |= SHF_COMPRESSED
;
1997 if (bed
->s
->elfclass
== ELFCLASS32
)
1999 Elf32_External_Chdr
*echdr
2000 = (Elf32_External_Chdr
*) contents
;
2001 bfd_put_32 (abfd
, ELFCOMPRESS_ZLIB
, &echdr
->ch_type
);
2002 bfd_put_32 (abfd
, sec
->size
, &echdr
->ch_size
);
2003 bfd_put_32 (abfd
, 1 << sec
->alignment_power
,
2004 &echdr
->ch_addralign
);
2008 Elf64_External_Chdr
*echdr
2009 = (Elf64_External_Chdr
*) contents
;
2010 bfd_put_32 (abfd
, ELFCOMPRESS_ZLIB
, &echdr
->ch_type
);
2011 bfd_put_32 (abfd
, 0, &echdr
->ch_reserved
);
2012 bfd_put_64 (abfd
, sec
->size
, &echdr
->ch_size
);
2013 bfd_put_64 (abfd
, 1 << sec
->alignment_power
,
2014 &echdr
->ch_addralign
);
2019 /* Clear the SHF_COMPRESSED bit. */
2020 elf_section_flags (sec
) &= ~SHF_COMPRESSED
;
2022 /* Write the zlib header. It should be "ZLIB" followed by
2023 the uncompressed section size, 8 bytes in big-endian
2025 memcpy (contents
, "ZLIB", 4);
2026 bfd_putb64 (sec
->size
, contents
+ 4);
2036 bfd_check_compression_header
2039 bfd_boolean bfd_check_compression_header
2040 (bfd *abfd, bfd_byte *contents, asection *sec,
2041 bfd_size_type *uncompressed_size);
2044 Check the compression header at CONTENTS of SEC in ABFD and
2045 store the uncompressed size in UNCOMPRESSED_SIZE if the
2046 compression header is valid.
2049 Return TRUE if the compression header is valid.
2053 bfd_check_compression_header (bfd
*abfd
, bfd_byte
*contents
,
2055 bfd_size_type
*uncompressed_size
)
2057 if (bfd_get_flavour (abfd
) == bfd_target_elf_flavour
2058 && (elf_section_flags (sec
) & SHF_COMPRESSED
) != 0)
2060 Elf_Internal_Chdr chdr
;
2061 const struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
2062 if (bed
->s
->elfclass
== ELFCLASS32
)
2064 Elf32_External_Chdr
*echdr
= (Elf32_External_Chdr
*) contents
;
2065 chdr
.ch_type
= bfd_get_32 (abfd
, &echdr
->ch_type
);
2066 chdr
.ch_size
= bfd_get_32 (abfd
, &echdr
->ch_size
);
2067 chdr
.ch_addralign
= bfd_get_32 (abfd
, &echdr
->ch_addralign
);
2071 Elf64_External_Chdr
*echdr
= (Elf64_External_Chdr
*) contents
;
2072 chdr
.ch_type
= bfd_get_32 (abfd
, &echdr
->ch_type
);
2073 chdr
.ch_size
= bfd_get_64 (abfd
, &echdr
->ch_size
);
2074 chdr
.ch_addralign
= bfd_get_64 (abfd
, &echdr
->ch_addralign
);
2076 if (chdr
.ch_type
== ELFCOMPRESS_ZLIB
2077 && chdr
.ch_addralign
== 1U << sec
->alignment_power
)
2079 *uncompressed_size
= chdr
.ch_size
;
2089 bfd_get_compression_header_size
2092 int bfd_get_compression_header_size (bfd *abfd, asection *sec);
2095 Return the size of the compression header of SEC in ABFD.
2098 Return the size of the compression header in bytes.
2102 bfd_get_compression_header_size (bfd
*abfd
, asection
*sec
)
2104 if (bfd_get_flavour (abfd
) == bfd_target_elf_flavour
)
2108 if (!(abfd
->flags
& BFD_COMPRESS_GABI
))
2111 else if (!(elf_section_flags (sec
) & SHF_COMPRESSED
))
2114 if (get_elf_backend_data (abfd
)->s
->elfclass
== ELFCLASS32
)
2115 return sizeof (Elf32_External_Chdr
);
2117 return sizeof (Elf64_External_Chdr
);
2125 bfd_convert_section_size
2128 bfd_size_type bfd_convert_section_size
2129 (bfd *ibfd, asection *isec, bfd *obfd, bfd_size_type size);
2132 Convert the size @var{size} of the section @var{isec} in input
2133 BFD @var{ibfd} to the section size in output BFD @var{obfd}.
2137 bfd_convert_section_size (bfd
*ibfd
, sec_ptr isec
, bfd
*obfd
,
2140 bfd_size_type hdr_size
;
2142 /* Do nothing if input file will be decompressed. */
2143 if ((ibfd
->flags
& BFD_DECOMPRESS
))
2146 /* Do nothing if either input or output aren't ELF. */
2147 if (bfd_get_flavour (ibfd
) != bfd_target_elf_flavour
2148 || bfd_get_flavour (obfd
) != bfd_target_elf_flavour
)
2151 /* Do nothing if ELF classes of input and output are the same. */
2152 if (get_elf_backend_data (ibfd
)->s
->elfclass
2153 == get_elf_backend_data (obfd
)->s
->elfclass
)
2156 /* Do nothing if the input section isn't a SHF_COMPRESSED section. */
2157 hdr_size
= bfd_get_compression_header_size (ibfd
, isec
);
2161 /* Adjust the size of the output SHF_COMPRESSED section. */
2162 if (hdr_size
== sizeof (Elf32_External_Chdr
))
2163 return (size
- sizeof (Elf32_External_Chdr
)
2164 + sizeof (Elf64_External_Chdr
));
2166 return (size
- sizeof (Elf64_External_Chdr
)
2167 + sizeof (Elf32_External_Chdr
));
2172 bfd_convert_section_contents
2175 bfd_boolean bfd_convert_section_contents
2176 (bfd *ibfd, asection *isec, bfd *obfd,
2177 bfd_byte **ptr, bfd_size_type *ptr_size);
2180 Convert the contents, stored in @var{*ptr}, of the section
2181 @var{isec} in input BFD @var{ibfd} to output BFD @var{obfd}
2182 if needed. The original buffer pointed to by @var{*ptr} may
2183 be freed and @var{*ptr} is returned with memory malloc'd by this
2184 function, and the new size written to @var{ptr_size}.
2188 bfd_convert_section_contents (bfd
*ibfd
, sec_ptr isec
, bfd
*obfd
,
2189 bfd_byte
**ptr
, bfd_size_type
*ptr_size
)
2192 bfd_size_type ihdr_size
, ohdr_size
, size
;
2193 Elf_Internal_Chdr chdr
;
2194 bfd_boolean use_memmove
;
2196 /* Do nothing if input file will be decompressed. */
2197 if ((ibfd
->flags
& BFD_DECOMPRESS
))
2200 /* Do nothing if either input or output aren't ELF. */
2201 if (bfd_get_flavour (ibfd
) != bfd_target_elf_flavour
2202 || bfd_get_flavour (obfd
) != bfd_target_elf_flavour
)
2205 /* Do nothing if ELF classes of input and output are the same. */
2206 if (get_elf_backend_data (ibfd
)->s
->elfclass
2207 == get_elf_backend_data (obfd
)->s
->elfclass
)
2210 /* Do nothing if the input section isn't a SHF_COMPRESSED section. */
2211 ihdr_size
= bfd_get_compression_header_size (ibfd
, isec
);
2217 /* Convert the contents of the input SHF_COMPRESSED section to
2218 output. Get the input compression header and the size of the
2219 output compression header. */
2220 if (ihdr_size
== sizeof (Elf32_External_Chdr
))
2222 Elf32_External_Chdr
*echdr
= (Elf32_External_Chdr
*) contents
;
2223 chdr
.ch_type
= bfd_get_32 (ibfd
, &echdr
->ch_type
);
2224 chdr
.ch_size
= bfd_get_32 (ibfd
, &echdr
->ch_size
);
2225 chdr
.ch_addralign
= bfd_get_32 (ibfd
, &echdr
->ch_addralign
);
2227 ohdr_size
= sizeof (Elf64_External_Chdr
);
2229 use_memmove
= FALSE
;
2233 Elf64_External_Chdr
*echdr
= (Elf64_External_Chdr
*) contents
;
2234 chdr
.ch_type
= bfd_get_32 (ibfd
, &echdr
->ch_type
);
2235 chdr
.ch_size
= bfd_get_64 (ibfd
, &echdr
->ch_size
);
2236 chdr
.ch_addralign
= bfd_get_64 (ibfd
, &echdr
->ch_addralign
);
2238 ohdr_size
= sizeof (Elf32_External_Chdr
);
2242 size
= bfd_get_section_size (isec
) - ihdr_size
+ ohdr_size
;
2245 contents
= (bfd_byte
*) bfd_malloc (size
);
2246 if (contents
== NULL
)
2250 /* Write out the output compression header. */
2251 if (ohdr_size
== sizeof (Elf32_External_Chdr
))
2253 Elf32_External_Chdr
*echdr
= (Elf32_External_Chdr
*) contents
;
2254 bfd_put_32 (obfd
, ELFCOMPRESS_ZLIB
, &echdr
->ch_type
);
2255 bfd_put_32 (obfd
, chdr
.ch_size
, &echdr
->ch_size
);
2256 bfd_put_32 (obfd
, chdr
.ch_addralign
, &echdr
->ch_addralign
);
2260 Elf64_External_Chdr
*echdr
= (Elf64_External_Chdr
*) contents
;
2261 bfd_put_32 (obfd
, ELFCOMPRESS_ZLIB
, &echdr
->ch_type
);
2262 bfd_put_32 (obfd
, 0, &echdr
->ch_reserved
);
2263 bfd_put_64 (obfd
, chdr
.ch_size
, &echdr
->ch_size
);
2264 bfd_put_64 (obfd
, chdr
.ch_addralign
, &echdr
->ch_addralign
);
2267 /* Copy the compressed contents. */
2269 memmove (contents
+ ohdr_size
, *ptr
+ ihdr_size
, size
- ohdr_size
);
2272 memcpy (contents
+ ohdr_size
, *ptr
+ ihdr_size
, size
- ohdr_size
);