1 /* Generic BFD library interface and support routines.
2 Copyright (C) 1990-2017 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_LINKER_CREATED \
184 . | BFD_PLUGIN | BFD_COMPRESS_GABI | BFD_CONVERT_ELF_COMMON \
185 . | BFD_USE_ELF_STT_COMMON)
187 . {* Flags bits which are for BFD use only. *}
188 .#define BFD_FLAGS_FOR_BFD_USE_MASK \
189 . (BFD_IN_MEMORY | BFD_COMPRESS | BFD_DECOMPRESS | BFD_LINKER_CREATED \
190 . | BFD_PLUGIN | BFD_TRADITIONAL_FORMAT | BFD_DETERMINISTIC_OUTPUT \
191 . | BFD_COMPRESS_GABI | BFD_CONVERT_ELF_COMMON | BFD_USE_ELF_STT_COMMON)
193 . {* Is the file descriptor being cached? That is, can it be closed as
194 . needed, and re-opened when accessed later? *}
195 . unsigned int cacheable : 1;
197 . {* Marks whether there was a default target specified when the
198 . BFD was opened. This is used to select which matching algorithm
199 . to use to choose the back end. *}
200 . unsigned int target_defaulted : 1;
202 . {* ... and here: (``once'' means at least once). *}
203 . unsigned int opened_once : 1;
205 . {* Set if we have a locally maintained mtime value, rather than
206 . getting it from the file each time. *}
207 . unsigned int mtime_set : 1;
209 . {* Flag set if symbols from this BFD should not be exported. *}
210 . unsigned int no_export : 1;
212 . {* Remember when output has begun, to stop strange things
214 . unsigned int output_has_begun : 1;
216 . {* Have archive map. *}
217 . unsigned int has_armap : 1;
219 . {* Set if this is a thin archive. *}
220 . unsigned int is_thin_archive : 1;
222 . {* Set if only required symbols should be added in the link hash table for
223 . this object. Used by VMS linkers. *}
224 . unsigned int selective_search : 1;
226 . {* Set if this is the linker output BFD. *}
227 . unsigned int is_linker_output : 1;
229 . {* Set if this is the linker input BFD. *}
230 . unsigned int is_linker_input : 1;
232 . {* If this is an input for a compiler plug-in library. *}
233 . ENUM_BITFIELD (bfd_plugin_format) plugin_format : 2;
235 . {* Set if this is a plugin output file. *}
236 . unsigned int lto_output : 1;
238 . {* Set to dummy BFD created when claimed by a compiler plug-in
240 . bfd *plugin_dummy_bfd;
242 . {* Currently my_archive is tested before adding origin to
243 . anything. I believe that this can become always an add of
244 . origin, with origin set to 0 for non archive files. *}
247 . {* The origin in the archive of the proxy entry. This will
248 . normally be the same as origin, except for thin archives,
249 . when it will contain the current offset of the proxy in the
250 . thin archive rather than the offset of the bfd in its actual
252 . ufile_ptr proxy_origin;
254 . {* A hash table for section names. *}
255 . struct bfd_hash_table section_htab;
257 . {* Pointer to linked list of sections. *}
258 . struct bfd_section *sections;
260 . {* The last section on the section list. *}
261 . struct bfd_section *section_last;
263 . {* The number of sections. *}
264 . unsigned int section_count;
266 . {* A field used by _bfd_generic_link_add_archive_symbols. This will
267 . be used only for archive elements. *}
270 . {* Stuff only useful for object files:
271 . The start address. *}
272 . bfd_vma start_address;
274 . {* Symbol table for output BFD (with symcount entries).
275 . Also used by the linker to cache input BFD symbols. *}
276 . struct bfd_symbol **outsymbols;
278 . {* Used for input and output. *}
279 . unsigned int symcount;
281 . {* Used for slurped dynamic symbol tables. *}
282 . unsigned int dynsymcount;
284 . {* Pointer to structure which contains architecture information. *}
285 . const struct bfd_arch_info *arch_info;
287 . {* Stuff only useful for archives. *}
289 . struct bfd *my_archive; {* The containing archive BFD. *}
290 . struct bfd *archive_next; {* The next BFD in the archive. *}
291 . struct bfd *archive_head; {* The first BFD in the archive. *}
292 . struct bfd *nested_archives; {* List of nested archive in a flattened
296 . {* For input BFDs, a chain of BFDs involved in a link. *}
298 . {* For output BFD, the linker hash table. *}
299 . struct bfd_link_hash_table *hash;
302 . {* Used by the back end to hold private data. *}
305 . struct aout_data_struct *aout_data;
306 . struct artdata *aout_ar_data;
307 . struct _oasys_data *oasys_obj_data;
308 . struct _oasys_ar_data *oasys_ar_data;
309 . struct coff_tdata *coff_obj_data;
310 . struct pe_tdata *pe_obj_data;
311 . struct xcoff_tdata *xcoff_obj_data;
312 . struct ecoff_tdata *ecoff_obj_data;
313 . struct ieee_data_struct *ieee_data;
314 . struct ieee_ar_data_struct *ieee_ar_data;
315 . struct srec_data_struct *srec_data;
316 . struct verilog_data_struct *verilog_data;
317 . struct ihex_data_struct *ihex_data;
318 . struct tekhex_data_struct *tekhex_data;
319 . struct elf_obj_tdata *elf_obj_data;
320 . struct nlm_obj_tdata *nlm_obj_data;
321 . struct bout_data_struct *bout_data;
322 . struct mmo_data_struct *mmo_data;
323 . struct sun_core_struct *sun_core_data;
324 . struct sco5_core_struct *sco5_core_data;
325 . struct trad_core_struct *trad_core_data;
326 . struct som_data_struct *som_data;
327 . struct hpux_core_struct *hpux_core_data;
328 . struct hppabsd_core_struct *hppabsd_core_data;
329 . struct sgi_core_struct *sgi_core_data;
330 . struct lynx_core_struct *lynx_core_data;
331 . struct osf_core_struct *osf_core_data;
332 . struct cisco_core_struct *cisco_core_data;
333 . struct versados_data_struct *versados_data;
334 . struct netbsd_core_struct *netbsd_core_data;
335 . struct mach_o_data_struct *mach_o_data;
336 . struct mach_o_fat_data_struct *mach_o_fat_data;
337 . struct plugin_data_struct *plugin_data;
338 . struct bfd_pef_data_struct *pef_data;
339 . struct bfd_pef_xlib_data_struct *pef_xlib_data;
340 . struct bfd_sym_data_struct *sym_data;
345 . {* Used by the application to hold private data. *}
348 . {* Where all the allocated stuff under this BFD goes. This is a
349 . struct objalloc *, but we use void * to avoid requiring the inclusion
353 . {* For input BFDs, the build ID, if the object has one. *}
354 . const struct bfd_build_id *build_id;
357 .{* See note beside bfd_set_section_userdata. *}
358 .static inline bfd_boolean
359 .bfd_set_cacheable (bfd * abfd, bfd_boolean val)
361 . abfd->cacheable = val;
371 #include "libiberty.h"
372 #include "demangle.h"
373 #include "safe-ctype.h"
376 #include "coff/internal.h"
377 #include "coff/sym.h"
379 #include "libecoff.h"
384 #define EXIT_FAILURE 1
388 /* provide storage for subsystem, stack and heap data which may have been
389 passed in on the command line. Ld puts this data into a bfd_link_info
390 struct which ultimately gets passed in to the bfd. When it arrives, copy
391 it to the following struct so that the data will be available in coffcode.h
392 where it is needed. The typedef's used are defined in bfd.h */
396 Error reporting, Miscellaneous, typedef bfd, BFD front end
401 Most BFD functions return nonzero on success (check their
402 individual documentation for precise semantics). On an error,
403 they call <<bfd_set_error>> to set an error condition that callers
404 can check by calling <<bfd_get_error>>.
405 If that returns <<bfd_error_system_call>>, then check
408 The easiest way to report a BFD error to the user is to
412 Type <<bfd_error_type>>
414 The values returned by <<bfd_get_error>> are defined by the
415 enumerated type <<bfd_error_type>>.
419 .typedef enum bfd_error
421 . bfd_error_no_error = 0,
422 . bfd_error_system_call,
423 . bfd_error_invalid_target,
424 . bfd_error_wrong_format,
425 . bfd_error_wrong_object_format,
426 . bfd_error_invalid_operation,
427 . bfd_error_no_memory,
428 . bfd_error_no_symbols,
429 . bfd_error_no_armap,
430 . bfd_error_no_more_archived_files,
431 . bfd_error_malformed_archive,
432 . bfd_error_missing_dso,
433 . bfd_error_file_not_recognized,
434 . bfd_error_file_ambiguously_recognized,
435 . bfd_error_no_contents,
436 . bfd_error_nonrepresentable_section,
437 . bfd_error_no_debug_section,
438 . bfd_error_bad_value,
439 . bfd_error_file_truncated,
440 . bfd_error_file_too_big,
441 . bfd_error_on_input,
442 . bfd_error_invalid_error_code
448 static bfd_error_type bfd_error
= bfd_error_no_error
;
449 static bfd
*input_bfd
= NULL
;
450 static bfd_error_type input_error
= bfd_error_no_error
;
452 const char *const bfd_errmsgs
[] =
455 N_("System call error"),
456 N_("Invalid bfd target"),
457 N_("File in wrong format"),
458 N_("Archive object file in wrong format"),
459 N_("Invalid operation"),
460 N_("Memory exhausted"),
462 N_("Archive has no index; run ranlib to add one"),
463 N_("No more archived files"),
464 N_("Malformed archive"),
465 N_("DSO missing from command line"),
466 N_("File format not recognized"),
467 N_("File format is ambiguous"),
468 N_("Section has no contents"),
469 N_("Nonrepresentable section on output"),
470 N_("Symbol needs debug section which does not exist"),
472 N_("File truncated"),
474 N_("Error reading %s: %s"),
475 N_("#<Invalid error code>")
483 bfd_error_type bfd_get_error (void);
486 Return the current BFD error condition.
500 void bfd_set_error (bfd_error_type error_tag, ...);
503 Set the BFD error condition to be @var{error_tag}.
504 If @var{error_tag} is bfd_error_on_input, then this function
505 takes two more parameters, the input bfd where the error
506 occurred, and the bfd_error_type error.
510 bfd_set_error (bfd_error_type error_tag
, ...)
512 bfd_error
= error_tag
;
513 if (error_tag
== bfd_error_on_input
)
515 /* This is an error that occurred during bfd_close when
516 writing an archive, but on one of the input files. */
519 va_start (ap
, error_tag
);
520 input_bfd
= va_arg (ap
, bfd
*);
521 input_error
= (bfd_error_type
) va_arg (ap
, int);
522 if (input_error
>= bfd_error_on_input
)
533 const char *bfd_errmsg (bfd_error_type error_tag);
536 Return a string describing the error @var{error_tag}, or
537 the system error if @var{error_tag} is <<bfd_error_system_call>>.
541 bfd_errmsg (bfd_error_type error_tag
)
546 if (error_tag
== bfd_error_on_input
)
549 const char *msg
= bfd_errmsg (input_error
);
551 if (asprintf (&buf
, _(bfd_errmsgs
[error_tag
]), input_bfd
->filename
, msg
)
555 /* Ick, what to do on out of memory? */
559 if (error_tag
== bfd_error_system_call
)
560 return xstrerror (errno
);
562 if (error_tag
> bfd_error_invalid_error_code
)
563 error_tag
= bfd_error_invalid_error_code
; /* sanity check */
565 return _(bfd_errmsgs
[error_tag
]);
573 void bfd_perror (const char *message);
576 Print to the standard error stream a string describing the
577 last BFD error that occurred, or the last system error if
578 the last BFD error was a system call failure. If @var{message}
579 is non-NULL and non-empty, the error string printed is preceded
580 by @var{message}, a colon, and a space. It is followed by a newline.
584 bfd_perror (const char *message
)
587 if (message
== NULL
|| *message
== '\0')
588 fprintf (stderr
, "%s\n", bfd_errmsg (bfd_get_error ()));
590 fprintf (stderr
, "%s: %s\n", message
, bfd_errmsg (bfd_get_error ()));
598 Some BFD functions want to print messages describing the
599 problem. They call a BFD error handler function. This
600 function may be overridden by the program.
602 The BFD error handler acts like vprintf.
606 .typedef void (*bfd_error_handler_type) (const char *, va_list);
610 /* The program name used when printing BFD error messages. */
612 static const char *_bfd_error_program_name
;
614 /* This macro and _doprnt taken from libiberty _doprnt.c, tidied a
615 little and extended to handle '%A' and '%B'. */
617 #define PRINT_TYPE(TYPE) \
620 TYPE value = va_arg (ap, TYPE); \
621 result = fprintf (stream, specifier, value); \
625 _doprnt (FILE *stream
, const char *format
, va_list ap
)
627 const char *ptr
= format
;
629 int total_printed
= 0;
637 /* While we have regular characters, print them. */
638 char *end
= strchr (ptr
, '%');
640 result
= fprintf (stream
, "%.*s", (int) (end
- ptr
), ptr
);
642 result
= fprintf (stream
, "%s", ptr
);
647 /* We have a format specifier! */
648 char *sptr
= specifier
;
649 int wide_width
= 0, short_width
= 0;
651 /* Copy the % and move forward. */
654 /* Move past flags. */
655 while (strchr ("-+ #0", *ptr
))
660 int value
= abs (va_arg (ap
, int));
661 sptr
+= sprintf (sptr
, "%d", value
);
665 /* Handle explicit numeric value. */
666 while (ISDIGIT (*ptr
))
671 /* Copy and go past the period. */
675 int value
= abs (va_arg (ap
, int));
676 sptr
+= sprintf (sptr
, "%d", value
);
680 /* Handle explicit numeric value. */
681 while (ISDIGIT (*ptr
))
684 while (strchr ("hlL", *ptr
))
703 /* Copy the type specifier, and NULL terminate. */
717 /* Short values are promoted to int, so just copy it
718 as an int and trust the C library printf to cast it
719 to the right width. */
734 #if defined(__GNUC__) || defined(HAVE_LONG_LONG)
735 PRINT_TYPE (long long);
737 /* Fake it and hope for the best. */
755 #if defined(__GNUC__) || defined(HAVE_LONG_DOUBLE)
756 PRINT_TYPE (long double);
758 /* Fake it and hope for the best. */
776 asection
*sec
= va_arg (ap
, asection
*);
778 const char *group
= NULL
;
779 struct coff_comdat_info
*ci
;
782 /* Invoking %A with a null section pointer is an
787 && bfd_get_flavour (abfd
) == bfd_target_elf_flavour
788 && elf_next_in_group (sec
) != NULL
789 && (sec
->flags
& SEC_GROUP
) == 0)
790 group
= elf_group_name (sec
);
791 else if (abfd
!= NULL
792 && bfd_get_flavour (abfd
) == bfd_target_coff_flavour
793 && (ci
= bfd_coff_get_comdat_section (sec
->owner
,
797 result
= fprintf (stream
, "%s[%s]", sec
->name
, group
);
799 result
= fprintf (stream
, "%s", sec
->name
);
804 bfd
*abfd
= va_arg (ap
, bfd
*);
807 /* Invoking %B with a null bfd pointer is an
810 else if (abfd
->my_archive
811 && !bfd_is_thin_archive (abfd
->my_archive
))
812 result
= fprintf (stream
, "%s(%s)",
813 abfd
->my_archive
->filename
, abfd
->filename
);
815 result
= fprintf (stream
, "%s", abfd
->filename
);
824 total_printed
+= result
;
827 return total_printed
;
830 /* This is the default routine to handle BFD error messages.
831 Like fprintf (stderr, ...), but also handles some extra format specifiers.
833 %A section name from section. For group components, print group name too.
834 %B file name from bfd. For archive components, prints archive too. */
837 error_handler_internal (const char *fmt
, va_list ap
)
839 /* PR 4992: Don't interrupt output being sent to stdout. */
842 if (_bfd_error_program_name
!= NULL
)
843 fprintf (stderr
, "%s: ", _bfd_error_program_name
);
845 fprintf (stderr
, "BFD: ");
847 _doprnt (stderr
, fmt
, ap
);
849 /* On AIX, putc is implemented as a macro that triggers a -Wunused-value
850 warning, so use the fputc function to avoid it. */
851 fputc ('\n', stderr
);
855 /* This is a function pointer to the routine which should handle BFD
856 error messages. It is called when a BFD routine encounters an
857 error for which it wants to print a message. Going through a
858 function pointer permits a program linked against BFD to intercept
859 the messages and deal with them itself. */
861 static bfd_error_handler_type _bfd_error_internal
= error_handler_internal
;
864 _bfd_error_handler (const char *fmt
, ...)
869 _bfd_error_internal (fmt
, ap
);
875 bfd_set_error_handler
878 bfd_error_handler_type bfd_set_error_handler (bfd_error_handler_type);
881 Set the BFD error handler function. Returns the previous
885 bfd_error_handler_type
886 bfd_set_error_handler (bfd_error_handler_type pnew
)
888 bfd_error_handler_type pold
;
890 pold
= _bfd_error_internal
;
891 _bfd_error_internal
= pnew
;
897 bfd_set_error_program_name
900 void bfd_set_error_program_name (const char *);
903 Set the program name to use when printing a BFD error. This
904 is printed before the error message followed by a colon and
905 space. The string must not be changed after it is passed to
910 bfd_set_error_program_name (const char *name
)
912 _bfd_error_program_name
= name
;
919 If BFD finds an internal inconsistency, the bfd assert
920 handler is called with information on the BFD version, BFD
921 source file and line. If this happens, most programs linked
922 against BFD are expected to want to exit with an error, or mark
923 the current BFD operation as failed, so it is recommended to
924 override the default handler, which just calls
925 _bfd_error_handler and continues.
929 .typedef void (*bfd_assert_handler_type) (const char *bfd_formatmsg,
930 . const char *bfd_version,
931 . const char *bfd_file,
936 /* Note the use of bfd_ prefix on the parameter names above: we want to
937 show which one is the message and which is the version by naming the
938 parameters, but avoid polluting the program-using-bfd namespace as
939 the typedef is visible in the exported headers that the program
940 includes. Below, it's just for consistency. */
943 _bfd_default_assert_handler (const char *bfd_formatmsg
,
944 const char *bfd_version
,
945 const char *bfd_file
,
949 _bfd_error_handler (bfd_formatmsg
, bfd_version
, bfd_file
, bfd_line
);
952 /* Similar to _bfd_error_handler, a program can decide to exit on an
953 internal BFD error. We use a non-variadic type to simplify passing
954 on parameters to other functions, e.g. _bfd_error_handler. */
956 static bfd_assert_handler_type _bfd_assert_handler
= _bfd_default_assert_handler
;
960 bfd_set_assert_handler
963 bfd_assert_handler_type bfd_set_assert_handler (bfd_assert_handler_type);
966 Set the BFD assert handler function. Returns the previous
970 bfd_assert_handler_type
971 bfd_set_assert_handler (bfd_assert_handler_type pnew
)
973 bfd_assert_handler_type pold
;
975 pold
= _bfd_assert_handler
;
976 _bfd_assert_handler
= pnew
;
982 Miscellaneous, Memory Usage, Error reporting, BFD front end
988 Miscellaneous functions
993 bfd_get_reloc_upper_bound
996 long bfd_get_reloc_upper_bound (bfd *abfd, asection *sect);
999 Return the number of bytes required to store the
1000 relocation information associated with section @var{sect}
1001 attached to bfd @var{abfd}. If an error occurs, return -1.
1006 bfd_get_reloc_upper_bound (bfd
*abfd
, sec_ptr asect
)
1008 if (abfd
->format
!= bfd_object
)
1010 bfd_set_error (bfd_error_invalid_operation
);
1014 return BFD_SEND (abfd
, _get_reloc_upper_bound
, (abfd
, asect
));
1019 bfd_canonicalize_reloc
1022 long bfd_canonicalize_reloc
1023 (bfd *abfd, asection *sec, arelent **loc, asymbol **syms);
1026 Call the back end associated with the open BFD
1027 @var{abfd} and translate the external form of the relocation
1028 information attached to @var{sec} into the internal canonical
1029 form. Place the table into memory at @var{loc}, which has
1030 been preallocated, usually by a call to
1031 <<bfd_get_reloc_upper_bound>>. Returns the number of relocs, or
1034 The @var{syms} table is also needed for horrible internal magic
1039 bfd_canonicalize_reloc (bfd
*abfd
,
1044 if (abfd
->format
!= bfd_object
)
1046 bfd_set_error (bfd_error_invalid_operation
);
1050 return BFD_SEND (abfd
, _bfd_canonicalize_reloc
,
1051 (abfd
, asect
, location
, symbols
));
1060 (bfd *abfd, asection *sec, arelent **rel, unsigned int count);
1063 Set the relocation pointer and count within
1064 section @var{sec} to the values @var{rel} and @var{count}.
1065 The argument @var{abfd} is ignored.
1067 .#define bfd_set_reloc(abfd, asect, location, count) \
1068 . BFD_SEND (abfd, _bfd_set_reloc, (abfd, asect, location, count))
1076 bfd_boolean bfd_set_file_flags (bfd *abfd, flagword flags);
1079 Set the flag word in the BFD @var{abfd} to the value @var{flags}.
1081 Possible errors are:
1082 o <<bfd_error_wrong_format>> - The target bfd was not of object format.
1083 o <<bfd_error_invalid_operation>> - The target bfd was open for reading.
1084 o <<bfd_error_invalid_operation>> -
1085 The flag word contained a bit which was not applicable to the
1086 type of file. E.g., an attempt was made to set the <<D_PAGED>> bit
1087 on a BFD format which does not support demand paging.
1092 bfd_set_file_flags (bfd
*abfd
, flagword flags
)
1094 if (abfd
->format
!= bfd_object
)
1096 bfd_set_error (bfd_error_wrong_format
);
1100 if (bfd_read_p (abfd
))
1102 bfd_set_error (bfd_error_invalid_operation
);
1106 bfd_get_file_flags (abfd
) = flags
;
1107 if ((flags
& bfd_applicable_file_flags (abfd
)) != flags
)
1109 bfd_set_error (bfd_error_invalid_operation
);
1117 bfd_assert (const char *file
, int line
)
1119 /* xgettext:c-format */
1120 (*_bfd_assert_handler
) (_("BFD %s assertion fail %s:%d"),
1121 BFD_VERSION_STRING
, file
, line
);
1124 /* A more or less friendly abort message. In libbfd.h abort is
1125 defined to call this function. */
1128 _bfd_abort (const char *file
, int line
, const char *fn
)
1132 /* xgettext:c-format */
1133 (_("BFD %s internal error, aborting at %s:%d in %s\n"),
1134 BFD_VERSION_STRING
, file
, line
, fn
);
1137 /* xgettext:c-format */
1138 (_("BFD %s internal error, aborting at %s:%d\n"),
1139 BFD_VERSION_STRING
, file
, line
);
1140 _bfd_error_handler (_("Please report this bug.\n"));
1141 _exit (EXIT_FAILURE
);
1149 int bfd_get_arch_size (bfd *abfd);
1152 Returns the normalized architecture address size, in bits, as
1153 determined by the object file's format. By normalized, we mean
1154 either 32 or 64. For ELF, this information is included in the
1155 header. Use bfd_arch_bits_per_address for number of bits in
1156 the architecture address.
1159 Returns the arch size in bits if known, <<-1>> otherwise.
1163 bfd_get_arch_size (bfd
*abfd
)
1165 if (abfd
->xvec
->flavour
== bfd_target_elf_flavour
)
1166 return get_elf_backend_data (abfd
)->s
->arch_size
;
1168 return bfd_arch_bits_per_address (abfd
) > 32 ? 64 : 32;
1173 bfd_get_sign_extend_vma
1176 int bfd_get_sign_extend_vma (bfd *abfd);
1179 Indicates if the target architecture "naturally" sign extends
1180 an address. Some architectures implicitly sign extend address
1181 values when they are converted to types larger than the size
1182 of an address. For instance, bfd_get_start_address() will
1183 return an address sign extended to fill a bfd_vma when this is
1187 Returns <<1>> if the target architecture is known to sign
1188 extend addresses, <<0>> if the target architecture is known to
1189 not sign extend addresses, and <<-1>> otherwise.
1193 bfd_get_sign_extend_vma (bfd
*abfd
)
1197 if (bfd_get_flavour (abfd
) == bfd_target_elf_flavour
)
1198 return get_elf_backend_data (abfd
)->sign_extend_vma
;
1200 name
= bfd_get_target (abfd
);
1202 /* Return a proper value for DJGPP & PE COFF.
1203 This function is required for DWARF2 support, but there is
1204 no place to store this information in the COFF back end.
1205 Should enough other COFF targets add support for DWARF2,
1206 a place will have to be found. Until then, this hack will do. */
1207 if (CONST_STRNEQ (name
, "coff-go32")
1208 || strcmp (name
, "pe-i386") == 0
1209 || strcmp (name
, "pei-i386") == 0
1210 || strcmp (name
, "pe-x86-64") == 0
1211 || strcmp (name
, "pei-x86-64") == 0
1212 || strcmp (name
, "pe-arm-wince-little") == 0
1213 || strcmp (name
, "pei-arm-wince-little") == 0
1214 || strcmp (name
, "aixcoff-rs6000") == 0)
1217 if (CONST_STRNEQ (name
, "mach-o"))
1220 bfd_set_error (bfd_error_wrong_format
);
1226 bfd_set_start_address
1229 bfd_boolean bfd_set_start_address (bfd *abfd, bfd_vma vma);
1232 Make @var{vma} the entry point of output BFD @var{abfd}.
1235 Returns <<TRUE>> on success, <<FALSE>> otherwise.
1239 bfd_set_start_address (bfd
*abfd
, bfd_vma vma
)
1241 abfd
->start_address
= vma
;
1250 unsigned int bfd_get_gp_size (bfd *abfd);
1253 Return the maximum size of objects to be optimized using the GP
1254 register under MIPS ECOFF. This is typically set by the <<-G>>
1255 argument to the compiler, assembler or linker.
1259 bfd_get_gp_size (bfd
*abfd
)
1261 if (abfd
->format
== bfd_object
)
1263 if (abfd
->xvec
->flavour
== bfd_target_ecoff_flavour
)
1264 return ecoff_data (abfd
)->gp_size
;
1265 else if (abfd
->xvec
->flavour
== bfd_target_elf_flavour
)
1266 return elf_gp_size (abfd
);
1276 void bfd_set_gp_size (bfd *abfd, unsigned int i);
1279 Set the maximum size of objects to be optimized using the GP
1280 register under ECOFF or MIPS ELF. This is typically set by
1281 the <<-G>> argument to the compiler, assembler or linker.
1285 bfd_set_gp_size (bfd
*abfd
, unsigned int i
)
1287 /* Don't try to set GP size on an archive or core file! */
1288 if (abfd
->format
!= bfd_object
)
1291 if (abfd
->xvec
->flavour
== bfd_target_ecoff_flavour
)
1292 ecoff_data (abfd
)->gp_size
= i
;
1293 else if (abfd
->xvec
->flavour
== bfd_target_elf_flavour
)
1294 elf_gp_size (abfd
) = i
;
1297 /* Get the GP value. This is an internal function used by some of the
1298 relocation special_function routines on targets which support a GP
1302 _bfd_get_gp_value (bfd
*abfd
)
1306 if (abfd
->format
!= bfd_object
)
1309 if (abfd
->xvec
->flavour
== bfd_target_ecoff_flavour
)
1310 return ecoff_data (abfd
)->gp
;
1311 else if (abfd
->xvec
->flavour
== bfd_target_elf_flavour
)
1312 return elf_gp (abfd
);
1317 /* Set the GP value. */
1320 _bfd_set_gp_value (bfd
*abfd
, bfd_vma v
)
1324 if (abfd
->format
!= bfd_object
)
1327 if (abfd
->xvec
->flavour
== bfd_target_ecoff_flavour
)
1328 ecoff_data (abfd
)->gp
= v
;
1329 else if (abfd
->xvec
->flavour
== bfd_target_elf_flavour
)
1338 bfd_vma bfd_scan_vma (const char *string, const char **end, int base);
1341 Convert, like <<strtoul>>, a numerical expression
1342 @var{string} into a <<bfd_vma>> integer, and return that integer.
1343 (Though without as many bells and whistles as <<strtoul>>.)
1344 The expression is assumed to be unsigned (i.e., positive).
1345 If given a @var{base}, it is used as the base for conversion.
1346 A base of 0 causes the function to interpret the string
1347 in hex if a leading "0x" or "0X" is found, otherwise
1348 in octal if a leading zero is found, otherwise in decimal.
1350 If the value would overflow, the maximum <<bfd_vma>> value is
1355 bfd_scan_vma (const char *string
, const char **end
, int base
)
1359 unsigned int cutlim
;
1362 /* Let the host do it if possible. */
1363 if (sizeof (bfd_vma
) <= sizeof (unsigned long))
1364 return strtoul (string
, (char **) end
, base
);
1366 #ifdef HAVE_STRTOULL
1367 if (sizeof (bfd_vma
) <= sizeof (unsigned long long))
1368 return strtoull (string
, (char **) end
, base
);
1373 if (string
[0] == '0')
1375 if ((string
[1] == 'x') || (string
[1] == 'X'))
1382 if ((base
< 2) || (base
> 36))
1387 && (string
[1] == 'x' || string
[1] == 'X')
1388 && ISXDIGIT (string
[2]))
1393 cutoff
= (~ (bfd_vma
) 0) / (bfd_vma
) base
;
1394 cutlim
= (~ (bfd_vma
) 0) % (bfd_vma
) base
;
1402 if (ISDIGIT (digit
))
1403 digit
= digit
- '0';
1404 else if (ISALPHA (digit
))
1405 digit
= TOUPPER (digit
) - 'A' + 10;
1408 if (digit
>= (unsigned int) base
)
1410 if (value
> cutoff
|| (value
== cutoff
&& digit
> cutlim
))
1412 value
= value
* base
+ digit
;
1417 value
= ~ (bfd_vma
) 0;
1427 bfd_copy_private_header_data
1430 bfd_boolean bfd_copy_private_header_data (bfd *ibfd, bfd *obfd);
1433 Copy private BFD header information from the BFD @var{ibfd} to the
1434 the BFD @var{obfd}. This copies information that may require
1435 sections to exist, but does not require symbol tables. Return
1436 <<true>> on success, <<false>> on error.
1437 Possible error returns are:
1439 o <<bfd_error_no_memory>> -
1440 Not enough memory exists to create private data for @var{obfd}.
1442 .#define bfd_copy_private_header_data(ibfd, obfd) \
1443 . BFD_SEND (obfd, _bfd_copy_private_header_data, \
1450 bfd_copy_private_bfd_data
1453 bfd_boolean bfd_copy_private_bfd_data (bfd *ibfd, bfd *obfd);
1456 Copy private BFD information from the BFD @var{ibfd} to the
1457 the BFD @var{obfd}. Return <<TRUE>> on success, <<FALSE>> on error.
1458 Possible error returns are:
1460 o <<bfd_error_no_memory>> -
1461 Not enough memory exists to create private data for @var{obfd}.
1463 .#define bfd_copy_private_bfd_data(ibfd, obfd) \
1464 . BFD_SEND (obfd, _bfd_copy_private_bfd_data, \
1471 bfd_set_private_flags
1474 bfd_boolean bfd_set_private_flags (bfd *abfd, flagword flags);
1477 Set private BFD flag information in the BFD @var{abfd}.
1478 Return <<TRUE>> on success, <<FALSE>> on error. Possible error
1481 o <<bfd_error_no_memory>> -
1482 Not enough memory exists to create private data for @var{obfd}.
1484 .#define bfd_set_private_flags(abfd, flags) \
1485 . BFD_SEND (abfd, _bfd_set_private_flags, (abfd, flags))
1494 The following functions exist but have not yet been documented.
1496 .#define bfd_sizeof_headers(abfd, info) \
1497 . BFD_SEND (abfd, _bfd_sizeof_headers, (abfd, info))
1499 .#define bfd_find_nearest_line(abfd, sec, syms, off, file, func, line) \
1500 . BFD_SEND (abfd, _bfd_find_nearest_line, \
1501 . (abfd, syms, sec, off, file, func, line, NULL))
1503 .#define bfd_find_nearest_line_discriminator(abfd, sec, syms, off, file, func, \
1505 . BFD_SEND (abfd, _bfd_find_nearest_line, \
1506 . (abfd, syms, sec, off, file, func, line, disc))
1508 .#define bfd_find_line(abfd, syms, sym, file, line) \
1509 . BFD_SEND (abfd, _bfd_find_line, \
1510 . (abfd, syms, sym, file, line))
1512 .#define bfd_find_inliner_info(abfd, file, func, line) \
1513 . BFD_SEND (abfd, _bfd_find_inliner_info, \
1514 . (abfd, file, func, line))
1516 .#define bfd_debug_info_start(abfd) \
1517 . BFD_SEND (abfd, _bfd_debug_info_start, (abfd))
1519 .#define bfd_debug_info_end(abfd) \
1520 . BFD_SEND (abfd, _bfd_debug_info_end, (abfd))
1522 .#define bfd_debug_info_accumulate(abfd, section) \
1523 . BFD_SEND (abfd, _bfd_debug_info_accumulate, (abfd, section))
1525 .#define bfd_stat_arch_elt(abfd, stat) \
1526 . BFD_SEND (abfd, _bfd_stat_arch_elt,(abfd, stat))
1528 .#define bfd_update_armap_timestamp(abfd) \
1529 . BFD_SEND (abfd, _bfd_update_armap_timestamp, (abfd))
1531 .#define bfd_set_arch_mach(abfd, arch, mach)\
1532 . BFD_SEND ( abfd, _bfd_set_arch_mach, (abfd, arch, mach))
1534 .#define bfd_relax_section(abfd, section, link_info, again) \
1535 . BFD_SEND (abfd, _bfd_relax_section, (abfd, section, link_info, again))
1537 .#define bfd_gc_sections(abfd, link_info) \
1538 . BFD_SEND (abfd, _bfd_gc_sections, (abfd, link_info))
1540 .#define bfd_lookup_section_flags(link_info, flag_info, section) \
1541 . BFD_SEND (abfd, _bfd_lookup_section_flags, (link_info, flag_info, section))
1543 .#define bfd_merge_sections(abfd, link_info) \
1544 . BFD_SEND (abfd, _bfd_merge_sections, (abfd, link_info))
1546 .#define bfd_is_group_section(abfd, sec) \
1547 . BFD_SEND (abfd, _bfd_is_group_section, (abfd, sec))
1549 .#define bfd_discard_group(abfd, sec) \
1550 . BFD_SEND (abfd, _bfd_discard_group, (abfd, sec))
1552 .#define bfd_link_hash_table_create(abfd) \
1553 . BFD_SEND (abfd, _bfd_link_hash_table_create, (abfd))
1555 .#define bfd_link_add_symbols(abfd, info) \
1556 . BFD_SEND (abfd, _bfd_link_add_symbols, (abfd, info))
1558 .#define bfd_link_just_syms(abfd, sec, info) \
1559 . BFD_SEND (abfd, _bfd_link_just_syms, (sec, info))
1561 .#define bfd_final_link(abfd, info) \
1562 . BFD_SEND (abfd, _bfd_final_link, (abfd, info))
1564 .#define bfd_free_cached_info(abfd) \
1565 . BFD_SEND (abfd, _bfd_free_cached_info, (abfd))
1567 .#define bfd_get_dynamic_symtab_upper_bound(abfd) \
1568 . BFD_SEND (abfd, _bfd_get_dynamic_symtab_upper_bound, (abfd))
1570 .#define bfd_print_private_bfd_data(abfd, file)\
1571 . BFD_SEND (abfd, _bfd_print_private_bfd_data, (abfd, file))
1573 .#define bfd_canonicalize_dynamic_symtab(abfd, asymbols) \
1574 . BFD_SEND (abfd, _bfd_canonicalize_dynamic_symtab, (abfd, asymbols))
1576 .#define bfd_get_synthetic_symtab(abfd, count, syms, dyncount, dynsyms, ret) \
1577 . BFD_SEND (abfd, _bfd_get_synthetic_symtab, (abfd, count, syms, \
1578 . dyncount, dynsyms, ret))
1580 .#define bfd_get_dynamic_reloc_upper_bound(abfd) \
1581 . BFD_SEND (abfd, _bfd_get_dynamic_reloc_upper_bound, (abfd))
1583 .#define bfd_canonicalize_dynamic_reloc(abfd, arels, asyms) \
1584 . BFD_SEND (abfd, _bfd_canonicalize_dynamic_reloc, (abfd, arels, asyms))
1586 .extern bfd_byte *bfd_get_relocated_section_contents
1587 . (bfd *, struct bfd_link_info *, struct bfd_link_order *, bfd_byte *,
1588 . bfd_boolean, asymbol **);
1594 bfd_get_relocated_section_contents (bfd
*abfd
,
1595 struct bfd_link_info
*link_info
,
1596 struct bfd_link_order
*link_order
,
1598 bfd_boolean relocatable
,
1602 bfd_byte
*(*fn
) (bfd
*, struct bfd_link_info
*, struct bfd_link_order
*,
1603 bfd_byte
*, bfd_boolean
, asymbol
**);
1605 if (link_order
->type
== bfd_indirect_link_order
)
1607 abfd2
= link_order
->u
.indirect
.section
->owner
;
1614 fn
= abfd2
->xvec
->_bfd_get_relocated_section_contents
;
1616 return (*fn
) (abfd
, link_info
, link_order
, data
, relocatable
, symbols
);
1619 /* Record information about an ELF program header. */
1622 bfd_record_phdr (bfd
*abfd
,
1624 bfd_boolean flags_valid
,
1626 bfd_boolean at_valid
,
1628 bfd_boolean includes_filehdr
,
1629 bfd_boolean includes_phdrs
,
1633 struct elf_segment_map
*m
, **pm
;
1636 if (bfd_get_flavour (abfd
) != bfd_target_elf_flavour
)
1639 amt
= sizeof (struct elf_segment_map
);
1640 amt
+= ((bfd_size_type
) count
- 1) * sizeof (asection
*);
1641 m
= (struct elf_segment_map
*) bfd_zalloc (abfd
, amt
);
1648 m
->p_flags_valid
= flags_valid
;
1649 m
->p_paddr_valid
= at_valid
;
1650 m
->includes_filehdr
= includes_filehdr
;
1651 m
->includes_phdrs
= includes_phdrs
;
1654 memcpy (m
->sections
, secs
, count
* sizeof (asection
*));
1656 for (pm
= &elf_seg_map (abfd
); *pm
!= NULL
; pm
= &(*pm
)->next
)
1664 /* Return true iff this target is 32-bit. */
1669 if (bfd_get_flavour (abfd
) == bfd_target_elf_flavour
)
1671 const struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
1672 return bed
->s
->elfclass
== ELFCLASS32
;
1675 /* For non-ELF targets, use architecture information. */
1676 return bfd_arch_bits_per_address (abfd
) <= 32;
1680 /* bfd_sprintf_vma and bfd_fprintf_vma display an address in the
1681 target's address size. */
1684 bfd_sprintf_vma (bfd
*abfd ATTRIBUTE_UNUSED
, char *buf
, bfd_vma value
)
1689 sprintf (buf
, "%08lx", (unsigned long) value
& 0xffffffff);
1693 sprintf_vma (buf
, value
);
1697 bfd_fprintf_vma (bfd
*abfd ATTRIBUTE_UNUSED
, void *stream
, bfd_vma value
)
1702 fprintf ((FILE *) stream
, "%08lx", (unsigned long) value
& 0xffffffff);
1706 fprintf_vma ((FILE *) stream
, value
);
1714 bfd_boolean bfd_alt_mach_code (bfd *abfd, int alternative);
1718 When more than one machine code number is available for the
1719 same machine type, this function can be used to switch between
1720 the preferred one (alternative == 0) and any others. Currently,
1721 only ELF supports this feature, with up to two alternate
1726 bfd_alt_mach_code (bfd
*abfd
, int alternative
)
1728 if (bfd_get_flavour (abfd
) == bfd_target_elf_flavour
)
1732 switch (alternative
)
1735 code
= get_elf_backend_data (abfd
)->elf_machine_code
;
1739 code
= get_elf_backend_data (abfd
)->elf_machine_alt1
;
1745 code
= get_elf_backend_data (abfd
)->elf_machine_alt2
;
1754 elf_elfheader (abfd
)->e_machine
= code
;
1764 bfd_emul_get_maxpagesize
1767 bfd_vma bfd_emul_get_maxpagesize (const char *);
1770 Returns the maximum page size, in bytes, as determined by
1774 Returns the maximum page size in bytes for ELF, 0 otherwise.
1778 bfd_emul_get_maxpagesize (const char *emul
)
1780 const bfd_target
*target
;
1782 target
= bfd_find_target (emul
, NULL
);
1784 && target
->flavour
== bfd_target_elf_flavour
)
1785 return xvec_get_elf_backend_data (target
)->maxpagesize
;
1791 bfd_elf_set_pagesize (const bfd_target
*target
, bfd_vma size
,
1792 int offset
, const bfd_target
*orig_target
)
1794 if (target
->flavour
== bfd_target_elf_flavour
)
1796 const struct elf_backend_data
*bed
;
1798 bed
= xvec_get_elf_backend_data (target
);
1799 *((bfd_vma
*) ((char *) bed
+ offset
)) = size
;
1802 if (target
->alternative_target
1803 && target
->alternative_target
!= orig_target
)
1804 bfd_elf_set_pagesize (target
->alternative_target
, size
, offset
,
1810 bfd_emul_set_maxpagesize
1813 void bfd_emul_set_maxpagesize (const char *, bfd_vma);
1816 For ELF, set the maximum page size for the emulation. It is
1817 a no-op for other formats.
1822 bfd_emul_set_maxpagesize (const char *emul
, bfd_vma size
)
1824 const bfd_target
*target
;
1826 target
= bfd_find_target (emul
, NULL
);
1828 bfd_elf_set_pagesize (target
, size
,
1829 offsetof (struct elf_backend_data
,
1830 maxpagesize
), target
);
1835 bfd_emul_get_commonpagesize
1838 bfd_vma bfd_emul_get_commonpagesize (const char *);
1841 Returns the common page size, in bytes, as determined by
1845 Returns the common page size in bytes for ELF, 0 otherwise.
1849 bfd_emul_get_commonpagesize (const char *emul
)
1851 const bfd_target
*target
;
1853 target
= bfd_find_target (emul
, NULL
);
1855 && target
->flavour
== bfd_target_elf_flavour
)
1856 return xvec_get_elf_backend_data (target
)->commonpagesize
;
1863 bfd_emul_set_commonpagesize
1866 void bfd_emul_set_commonpagesize (const char *, bfd_vma);
1869 For ELF, set the common page size for the emulation. It is
1870 a no-op for other formats.
1875 bfd_emul_set_commonpagesize (const char *emul
, bfd_vma size
)
1877 const bfd_target
*target
;
1879 target
= bfd_find_target (emul
, NULL
);
1881 bfd_elf_set_pagesize (target
, size
,
1882 offsetof (struct elf_backend_data
,
1883 commonpagesize
), target
);
1891 char *bfd_demangle (bfd *, const char *, int);
1894 Wrapper around cplus_demangle. Strips leading underscores and
1895 other such chars that would otherwise confuse the demangler.
1896 If passed a g++ v3 ABI mangled name, returns a buffer allocated
1897 with malloc holding the demangled name. Returns NULL otherwise
1898 and on memory alloc failure.
1902 bfd_demangle (bfd
*abfd
, const char *name
, int options
)
1905 const char *pre
, *suf
;
1907 bfd_boolean skip_lead
;
1909 skip_lead
= (abfd
!= NULL
1911 && bfd_get_symbol_leading_char (abfd
) == *name
);
1915 /* This is a hack for better error reporting on XCOFF, PowerPC64-ELF
1916 or the MS PE format. These formats have a number of leading '.'s
1917 on at least some symbols, so we remove all dots to avoid
1918 confusing the demangler. */
1920 while (*name
== '.' || *name
== '$')
1922 pre_len
= name
- pre
;
1924 /* Strip off @plt and suchlike too. */
1926 suf
= strchr (name
, '@');
1929 alloc
= (char *) bfd_malloc (suf
- name
+ 1);
1932 memcpy (alloc
, name
, suf
- name
);
1933 alloc
[suf
- name
] = '\0';
1937 res
= cplus_demangle (name
, options
);
1946 size_t len
= strlen (pre
) + 1;
1947 alloc
= (char *) bfd_malloc (len
);
1950 memcpy (alloc
, pre
, len
);
1956 /* Put back any prefix or suffix. */
1957 if (pre_len
!= 0 || suf
!= NULL
)
1966 suf_len
= strlen (suf
) + 1;
1967 final
= (char *) bfd_malloc (pre_len
+ len
+ suf_len
);
1970 memcpy (final
, pre
, pre_len
);
1971 memcpy (final
+ pre_len
, res
, len
);
1972 memcpy (final
+ pre_len
+ len
, suf
, suf_len
);
1983 bfd_update_compression_header
1986 void bfd_update_compression_header
1987 (bfd *abfd, bfd_byte *contents, asection *sec);
1990 Set the compression header at CONTENTS of SEC in ABFD and update
1991 elf_section_flags for compression.
1995 bfd_update_compression_header (bfd
*abfd
, bfd_byte
*contents
,
1998 if ((abfd
->flags
& BFD_COMPRESS
) != 0)
2000 if (bfd_get_flavour (abfd
) == bfd_target_elf_flavour
)
2002 if ((abfd
->flags
& BFD_COMPRESS_GABI
) != 0)
2004 const struct elf_backend_data
*bed
2005 = get_elf_backend_data (abfd
);
2007 /* Set the SHF_COMPRESSED bit. */
2008 elf_section_flags (sec
) |= SHF_COMPRESSED
;
2010 if (bed
->s
->elfclass
== ELFCLASS32
)
2012 Elf32_External_Chdr
*echdr
2013 = (Elf32_External_Chdr
*) contents
;
2014 bfd_put_32 (abfd
, ELFCOMPRESS_ZLIB
, &echdr
->ch_type
);
2015 bfd_put_32 (abfd
, sec
->size
, &echdr
->ch_size
);
2016 bfd_put_32 (abfd
, 1 << sec
->alignment_power
,
2017 &echdr
->ch_addralign
);
2021 Elf64_External_Chdr
*echdr
2022 = (Elf64_External_Chdr
*) contents
;
2023 bfd_put_32 (abfd
, ELFCOMPRESS_ZLIB
, &echdr
->ch_type
);
2024 bfd_put_32 (abfd
, 0, &echdr
->ch_reserved
);
2025 bfd_put_64 (abfd
, sec
->size
, &echdr
->ch_size
);
2026 bfd_put_64 (abfd
, 1 << sec
->alignment_power
,
2027 &echdr
->ch_addralign
);
2032 /* Clear the SHF_COMPRESSED bit. */
2033 elf_section_flags (sec
) &= ~SHF_COMPRESSED
;
2035 /* Write the zlib header. It should be "ZLIB" followed by
2036 the uncompressed section size, 8 bytes in big-endian
2038 memcpy (contents
, "ZLIB", 4);
2039 bfd_putb64 (sec
->size
, contents
+ 4);
2049 bfd_check_compression_header
2052 bfd_boolean bfd_check_compression_header
2053 (bfd *abfd, bfd_byte *contents, asection *sec,
2054 bfd_size_type *uncompressed_size);
2057 Check the compression header at CONTENTS of SEC in ABFD and
2058 store the uncompressed size in UNCOMPRESSED_SIZE if the
2059 compression header is valid.
2062 Return TRUE if the compression header is valid.
2066 bfd_check_compression_header (bfd
*abfd
, bfd_byte
*contents
,
2068 bfd_size_type
*uncompressed_size
)
2070 if (bfd_get_flavour (abfd
) == bfd_target_elf_flavour
2071 && (elf_section_flags (sec
) & SHF_COMPRESSED
) != 0)
2073 Elf_Internal_Chdr chdr
;
2074 const struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
2075 if (bed
->s
->elfclass
== ELFCLASS32
)
2077 Elf32_External_Chdr
*echdr
= (Elf32_External_Chdr
*) contents
;
2078 chdr
.ch_type
= bfd_get_32 (abfd
, &echdr
->ch_type
);
2079 chdr
.ch_size
= bfd_get_32 (abfd
, &echdr
->ch_size
);
2080 chdr
.ch_addralign
= bfd_get_32 (abfd
, &echdr
->ch_addralign
);
2084 Elf64_External_Chdr
*echdr
= (Elf64_External_Chdr
*) contents
;
2085 chdr
.ch_type
= bfd_get_32 (abfd
, &echdr
->ch_type
);
2086 chdr
.ch_size
= bfd_get_64 (abfd
, &echdr
->ch_size
);
2087 chdr
.ch_addralign
= bfd_get_64 (abfd
, &echdr
->ch_addralign
);
2089 if (chdr
.ch_type
== ELFCOMPRESS_ZLIB
2090 && chdr
.ch_addralign
== 1U << sec
->alignment_power
)
2092 *uncompressed_size
= chdr
.ch_size
;
2102 bfd_get_compression_header_size
2105 int bfd_get_compression_header_size (bfd *abfd, asection *sec);
2108 Return the size of the compression header of SEC in ABFD.
2111 Return the size of the compression header in bytes.
2115 bfd_get_compression_header_size (bfd
*abfd
, asection
*sec
)
2117 if (bfd_get_flavour (abfd
) == bfd_target_elf_flavour
)
2121 if (!(abfd
->flags
& BFD_COMPRESS_GABI
))
2124 else if (!(elf_section_flags (sec
) & SHF_COMPRESSED
))
2127 if (get_elf_backend_data (abfd
)->s
->elfclass
== ELFCLASS32
)
2128 return sizeof (Elf32_External_Chdr
);
2130 return sizeof (Elf64_External_Chdr
);
2138 bfd_convert_section_size
2141 bfd_size_type bfd_convert_section_size
2142 (bfd *ibfd, asection *isec, bfd *obfd, bfd_size_type size);
2145 Convert the size @var{size} of the section @var{isec} in input
2146 BFD @var{ibfd} to the section size in output BFD @var{obfd}.
2150 bfd_convert_section_size (bfd
*ibfd
, sec_ptr isec
, bfd
*obfd
,
2153 bfd_size_type hdr_size
;
2155 /* Do nothing if input file will be decompressed. */
2156 if ((ibfd
->flags
& BFD_DECOMPRESS
))
2159 /* Do nothing if either input or output aren't ELF. */
2160 if (bfd_get_flavour (ibfd
) != bfd_target_elf_flavour
2161 || bfd_get_flavour (obfd
) != bfd_target_elf_flavour
)
2164 /* Do nothing if ELF classes of input and output are the same. */
2165 if (get_elf_backend_data (ibfd
)->s
->elfclass
2166 == get_elf_backend_data (obfd
)->s
->elfclass
)
2169 /* Do nothing if the input section isn't a SHF_COMPRESSED section. */
2170 hdr_size
= bfd_get_compression_header_size (ibfd
, isec
);
2174 /* Adjust the size of the output SHF_COMPRESSED section. */
2175 if (hdr_size
== sizeof (Elf32_External_Chdr
))
2176 return (size
- sizeof (Elf32_External_Chdr
)
2177 + sizeof (Elf64_External_Chdr
));
2179 return (size
- sizeof (Elf64_External_Chdr
)
2180 + sizeof (Elf32_External_Chdr
));
2185 bfd_convert_section_contents
2188 bfd_boolean bfd_convert_section_contents
2189 (bfd *ibfd, asection *isec, bfd *obfd,
2190 bfd_byte **ptr, bfd_size_type *ptr_size);
2193 Convert the contents, stored in @var{*ptr}, of the section
2194 @var{isec} in input BFD @var{ibfd} to output BFD @var{obfd}
2195 if needed. The original buffer pointed to by @var{*ptr} may
2196 be freed and @var{*ptr} is returned with memory malloc'd by this
2197 function, and the new size written to @var{ptr_size}.
2201 bfd_convert_section_contents (bfd
*ibfd
, sec_ptr isec
, bfd
*obfd
,
2202 bfd_byte
**ptr
, bfd_size_type
*ptr_size
)
2205 bfd_size_type ihdr_size
, ohdr_size
, size
;
2206 Elf_Internal_Chdr chdr
;
2207 bfd_boolean use_memmove
;
2209 /* Do nothing if input file will be decompressed. */
2210 if ((ibfd
->flags
& BFD_DECOMPRESS
))
2213 /* Do nothing if either input or output aren't ELF. */
2214 if (bfd_get_flavour (ibfd
) != bfd_target_elf_flavour
2215 || bfd_get_flavour (obfd
) != bfd_target_elf_flavour
)
2218 /* Do nothing if ELF classes of input and output are the same. */
2219 if (get_elf_backend_data (ibfd
)->s
->elfclass
2220 == get_elf_backend_data (obfd
)->s
->elfclass
)
2223 /* Do nothing if the input section isn't a SHF_COMPRESSED section. */
2224 ihdr_size
= bfd_get_compression_header_size (ibfd
, isec
);
2230 /* Convert the contents of the input SHF_COMPRESSED section to
2231 output. Get the input compression header and the size of the
2232 output compression header. */
2233 if (ihdr_size
== sizeof (Elf32_External_Chdr
))
2235 Elf32_External_Chdr
*echdr
= (Elf32_External_Chdr
*) contents
;
2236 chdr
.ch_type
= bfd_get_32 (ibfd
, &echdr
->ch_type
);
2237 chdr
.ch_size
= bfd_get_32 (ibfd
, &echdr
->ch_size
);
2238 chdr
.ch_addralign
= bfd_get_32 (ibfd
, &echdr
->ch_addralign
);
2240 ohdr_size
= sizeof (Elf64_External_Chdr
);
2242 use_memmove
= FALSE
;
2246 Elf64_External_Chdr
*echdr
= (Elf64_External_Chdr
*) contents
;
2247 chdr
.ch_type
= bfd_get_32 (ibfd
, &echdr
->ch_type
);
2248 chdr
.ch_size
= bfd_get_64 (ibfd
, &echdr
->ch_size
);
2249 chdr
.ch_addralign
= bfd_get_64 (ibfd
, &echdr
->ch_addralign
);
2251 ohdr_size
= sizeof (Elf32_External_Chdr
);
2255 size
= bfd_get_section_size (isec
) - ihdr_size
+ ohdr_size
;
2258 contents
= (bfd_byte
*) bfd_malloc (size
);
2259 if (contents
== NULL
)
2263 /* Write out the output compression header. */
2264 if (ohdr_size
== sizeof (Elf32_External_Chdr
))
2266 Elf32_External_Chdr
*echdr
= (Elf32_External_Chdr
*) contents
;
2267 bfd_put_32 (obfd
, ELFCOMPRESS_ZLIB
, &echdr
->ch_type
);
2268 bfd_put_32 (obfd
, chdr
.ch_size
, &echdr
->ch_size
);
2269 bfd_put_32 (obfd
, chdr
.ch_addralign
, &echdr
->ch_addralign
);
2273 Elf64_External_Chdr
*echdr
= (Elf64_External_Chdr
*) contents
;
2274 bfd_put_32 (obfd
, ELFCOMPRESS_ZLIB
, &echdr
->ch_type
);
2275 bfd_put_32 (obfd
, 0, &echdr
->ch_reserved
);
2276 bfd_put_64 (obfd
, chdr
.ch_size
, &echdr
->ch_size
);
2277 bfd_put_64 (obfd
, chdr
.ch_addralign
, &echdr
->ch_addralign
);
2280 /* Copy the compressed contents. */
2282 memmove (contents
+ ohdr_size
, *ptr
+ ihdr_size
, size
- ohdr_size
);
2285 memcpy (contents
+ ohdr_size
, *ptr
+ ihdr_size
, size
- ohdr_size
);