1 /* Generic BFD library interface and support routines.
2 Copyright (C) 1990-2018 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 0x0
105 . {* BFD contains relocation entries. *}
106 .#define HAS_RELOC 0x1
108 . {* BFD is directly executable. *}
111 . {* BFD has line number information (basically used for F_LNNO in a
113 .#define HAS_LINENO 0x4
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 coff_tdata *coff_obj_data;
308 . struct pe_tdata *pe_obj_data;
309 . struct xcoff_tdata *xcoff_obj_data;
310 . struct ecoff_tdata *ecoff_obj_data;
311 . struct srec_data_struct *srec_data;
312 . struct verilog_data_struct *verilog_data;
313 . struct ihex_data_struct *ihex_data;
314 . struct tekhex_data_struct *tekhex_data;
315 . struct elf_obj_tdata *elf_obj_data;
316 . struct mmo_data_struct *mmo_data;
317 . struct sun_core_struct *sun_core_data;
318 . struct sco5_core_struct *sco5_core_data;
319 . struct trad_core_struct *trad_core_data;
320 . struct som_data_struct *som_data;
321 . struct hpux_core_struct *hpux_core_data;
322 . struct hppabsd_core_struct *hppabsd_core_data;
323 . struct sgi_core_struct *sgi_core_data;
324 . struct lynx_core_struct *lynx_core_data;
325 . struct osf_core_struct *osf_core_data;
326 . struct cisco_core_struct *cisco_core_data;
327 . struct versados_data_struct *versados_data;
328 . struct netbsd_core_struct *netbsd_core_data;
329 . struct mach_o_data_struct *mach_o_data;
330 . struct mach_o_fat_data_struct *mach_o_fat_data;
331 . struct plugin_data_struct *plugin_data;
332 . struct bfd_pef_data_struct *pef_data;
333 . struct bfd_pef_xlib_data_struct *pef_xlib_data;
334 . struct bfd_sym_data_struct *sym_data;
339 . {* Used by the application to hold private data. *}
342 . {* Where all the allocated stuff under this BFD goes. This is a
343 . struct objalloc *, but we use void * to avoid requiring the inclusion
347 . {* For input BFDs, the build ID, if the object has one. *}
348 . const struct bfd_build_id *build_id;
351 .{* See note beside bfd_set_section_userdata. *}
352 .static inline bfd_boolean
353 .bfd_set_cacheable (bfd * abfd, bfd_boolean val)
355 . abfd->cacheable = val;
365 #include "libiberty.h"
366 #include "demangle.h"
367 #include "safe-ctype.h"
370 #include "coff/internal.h"
371 #include "coff/sym.h"
373 #include "libecoff.h"
378 #define EXIT_FAILURE 1
382 /* provide storage for subsystem, stack and heap data which may have been
383 passed in on the command line. Ld puts this data into a bfd_link_info
384 struct which ultimately gets passed in to the bfd. When it arrives, copy
385 it to the following struct so that the data will be available in coffcode.h
386 where it is needed. The typedef's used are defined in bfd.h */
390 Error reporting, Miscellaneous, typedef bfd, BFD front end
395 Most BFD functions return nonzero on success (check their
396 individual documentation for precise semantics). On an error,
397 they call <<bfd_set_error>> to set an error condition that callers
398 can check by calling <<bfd_get_error>>.
399 If that returns <<bfd_error_system_call>>, then check
402 The easiest way to report a BFD error to the user is to
406 Type <<bfd_error_type>>
408 The values returned by <<bfd_get_error>> are defined by the
409 enumerated type <<bfd_error_type>>.
413 .typedef enum bfd_error
415 . bfd_error_no_error = 0,
416 . bfd_error_system_call,
417 . bfd_error_invalid_target,
418 . bfd_error_wrong_format,
419 . bfd_error_wrong_object_format,
420 . bfd_error_invalid_operation,
421 . bfd_error_no_memory,
422 . bfd_error_no_symbols,
423 . bfd_error_no_armap,
424 . bfd_error_no_more_archived_files,
425 . bfd_error_malformed_archive,
426 . bfd_error_missing_dso,
427 . bfd_error_file_not_recognized,
428 . bfd_error_file_ambiguously_recognized,
429 . bfd_error_no_contents,
430 . bfd_error_nonrepresentable_section,
431 . bfd_error_no_debug_section,
432 . bfd_error_bad_value,
433 . bfd_error_file_truncated,
434 . bfd_error_file_too_big,
435 . bfd_error_on_input,
436 . bfd_error_invalid_error_code
442 static bfd_error_type bfd_error
= bfd_error_no_error
;
443 static bfd
*input_bfd
= NULL
;
444 static bfd_error_type input_error
= bfd_error_no_error
;
446 const char *const bfd_errmsgs
[] =
449 N_("system call error"),
450 N_("invalid bfd target"),
451 N_("file in wrong format"),
452 N_("archive object file in wrong format"),
453 N_("invalid operation"),
454 N_("memory exhausted"),
456 N_("archive has no index; run ranlib to add one"),
457 N_("no more archived files"),
458 N_("malformed archive"),
459 N_("DSO missing from command line"),
460 N_("file format not recognized"),
461 N_("file format is ambiguous"),
462 N_("section has no contents"),
463 N_("nonrepresentable section on output"),
464 N_("symbol needs debug section which does not exist"),
466 N_("file truncated"),
468 N_("error reading %s: %s"),
469 N_("#<invalid error code>")
477 bfd_error_type bfd_get_error (void);
480 Return the current BFD error condition.
494 void bfd_set_error (bfd_error_type error_tag);
497 Set the BFD error condition to be @var{error_tag}.
499 @var{error_tag} must not be bfd_error_on_input. Use
500 bfd_set_input_error for input errors instead.
504 bfd_set_error (bfd_error_type error_tag
)
506 bfd_error
= error_tag
;
507 if (bfd_error
>= bfd_error_on_input
)
516 void bfd_set_input_error (bfd *input, bfd_error_type error_tag);
520 Set the BFD error condition to be bfd_error_on_input.
521 @var{input} is the input bfd where the error occurred, and
522 @var{error_tag} the bfd_error_type error.
526 bfd_set_input_error (bfd
*input
, bfd_error_type error_tag
)
528 /* This is an error that occurred during bfd_close when writing an
529 archive, but on one of the input files. */
530 bfd_error
= bfd_error_on_input
;
532 input_error
= error_tag
;
533 if (input_error
>= bfd_error_on_input
)
542 const char *bfd_errmsg (bfd_error_type error_tag);
545 Return a string describing the error @var{error_tag}, or
546 the system error if @var{error_tag} is <<bfd_error_system_call>>.
550 bfd_errmsg (bfd_error_type error_tag
)
555 if (error_tag
== bfd_error_on_input
)
558 const char *msg
= bfd_errmsg (input_error
);
560 if (asprintf (&buf
, _(bfd_errmsgs
[error_tag
]), input_bfd
->filename
, msg
)
564 /* Ick, what to do on out of memory? */
568 if (error_tag
== bfd_error_system_call
)
569 return xstrerror (errno
);
571 if (error_tag
> bfd_error_invalid_error_code
)
572 error_tag
= bfd_error_invalid_error_code
; /* sanity check */
574 return _(bfd_errmsgs
[error_tag
]);
582 void bfd_perror (const char *message);
585 Print to the standard error stream a string describing the
586 last BFD error that occurred, or the last system error if
587 the last BFD error was a system call failure. If @var{message}
588 is non-NULL and non-empty, the error string printed is preceded
589 by @var{message}, a colon, and a space. It is followed by a newline.
593 bfd_perror (const char *message
)
596 if (message
== NULL
|| *message
== '\0')
597 fprintf (stderr
, "%s\n", bfd_errmsg (bfd_get_error ()));
599 fprintf (stderr
, "%s: %s\n", message
, bfd_errmsg (bfd_get_error ()));
607 Some BFD functions want to print messages describing the
608 problem. They call a BFD error handler function. This
609 function may be overridden by the program.
611 The BFD error handler acts like vprintf.
615 .typedef void (*bfd_error_handler_type) (const char *, va_list);
619 /* The program name used when printing BFD error messages. */
621 static const char *_bfd_error_program_name
;
623 /* Support for positional parameters. */
625 union _bfd_doprnt_args
645 /* This macro and _bfd_doprnt taken from libiberty _doprnt.c, tidied a
646 little and extended to handle '%pA', '%pB' and positional parameters. */
648 #define PRINT_TYPE(TYPE, FIELD) \
651 TYPE value = (TYPE) args[arg_no].FIELD; \
652 result = fprintf (stream, specifier, value); \
656 _bfd_doprnt (FILE *stream
, const char *format
, union _bfd_doprnt_args
*args
)
658 const char *ptr
= format
;
660 int total_printed
= 0;
661 unsigned int arg_count
= 0;
669 /* While we have regular characters, print them. */
670 char *end
= strchr (ptr
, '%');
672 result
= fprintf (stream
, "%.*s", (int) (end
- ptr
), ptr
);
674 result
= fprintf (stream
, "%s", ptr
);
677 else if (ptr
[1] == '%')
685 /* We have a format specifier! */
686 char *sptr
= specifier
;
687 int wide_width
= 0, short_width
= 0;
690 /* Copy the % and move forward. */
693 /* Check for a positional parameter. */
695 if (*ptr
!= '0' && ISDIGIT (*ptr
) && ptr
[1] == '$')
701 /* Move past flags. */
702 while (strchr ("-+ #0'I", *ptr
))
708 unsigned int arg_index
;
711 arg_index
= arg_count
;
712 if (*ptr
!= '0' && ISDIGIT (*ptr
) && ptr
[1] == '$')
714 arg_index
= *ptr
- '1';
717 value
= abs (args
[arg_index
].i
);
719 sptr
+= sprintf (sptr
, "%d", value
);
722 /* Handle explicit numeric value. */
723 while (ISDIGIT (*ptr
))
729 /* Copy and go past the period. */
734 unsigned int arg_index
;
737 arg_index
= arg_count
;
738 if (*ptr
!= '0' && ISDIGIT (*ptr
) && ptr
[1] == '$')
740 arg_index
= *ptr
- '1';
743 value
= abs (args
[arg_index
].i
);
745 sptr
+= sprintf (sptr
, "%d", value
);
748 /* Handle explicit numeric value. */
749 while (ISDIGIT (*ptr
))
752 while (strchr ("hlL", *ptr
))
771 /* Copy the type specifier, and NULL terminate. */
774 if ((int) arg_no
< 0)
787 /* Short values are promoted to int, so just copy it
788 as an int and trust the C library printf to cast it
789 to the right width. */
800 PRINT_TYPE (long, l
);
804 #if defined (__MSVCRT__)
811 #if defined (__GNUC__) || defined (HAVE_LONG_LONG)
812 PRINT_TYPE (long long, ll
);
814 /* Fake it and hope for the best. */
815 PRINT_TYPE (long, l
);
829 PRINT_TYPE (double, d
);
832 #if defined (__GNUC__) || defined (HAVE_LONG_DOUBLE)
833 PRINT_TYPE (long double, ld
);
835 /* Fake it and hope for the best. */
836 PRINT_TYPE (double, d
);
842 PRINT_TYPE (char *, p
);
849 const char *group
= NULL
;
850 struct coff_comdat_info
*ci
;
853 sec
= (asection
*) args
[arg_no
].p
;
855 /* Invoking %pA with a null section pointer is an
860 && bfd_get_flavour (abfd
) == bfd_target_elf_flavour
861 && elf_next_in_group (sec
) != NULL
862 && (sec
->flags
& SEC_GROUP
) == 0)
863 group
= elf_group_name (sec
);
864 else if (abfd
!= NULL
865 && bfd_get_flavour (abfd
) == bfd_target_coff_flavour
866 && (ci
= bfd_coff_get_comdat_section (sec
->owner
,
870 result
= fprintf (stream
, "%s[%s]", sec
->name
, group
);
872 result
= fprintf (stream
, "%s", sec
->name
);
874 else if (*ptr
== 'B')
879 abfd
= (bfd
*) args
[arg_no
].p
;
881 /* Invoking %pB with a null bfd pointer is an
884 else if (abfd
->my_archive
885 && !bfd_is_thin_archive (abfd
->my_archive
))
886 result
= fprintf (stream
, "%s(%s)",
887 abfd
->my_archive
->filename
,
890 result
= fprintf (stream
, "%s", abfd
->filename
);
893 PRINT_TYPE (void *, p
);
902 total_printed
+= result
;
905 return total_printed
;
908 /* First pass over FORMAT to gather ARGS. Returns number of args. */
911 _bfd_doprnt_scan (const char *format
, union _bfd_doprnt_args
*args
)
913 const char *ptr
= format
;
914 unsigned int arg_count
= 0;
920 ptr
= strchr (ptr
, '%');
924 else if (ptr
[1] == '%')
928 int wide_width
= 0, short_width
= 0;
934 /* Check for a positional parameter. */
936 if (*ptr
!= '0' && ISDIGIT (*ptr
) && ptr
[1] == '$')
942 /* Move past flags. */
943 while (strchr ("-+ #0'I", *ptr
))
948 unsigned int arg_index
;
951 arg_index
= arg_count
;
952 if (*ptr
!= '0' && ISDIGIT (*ptr
) && ptr
[1] == '$')
954 arg_index
= *ptr
- '1';
959 args
[arg_index
].type
= Int
;
963 /* Handle explicit numeric value. */
964 while (ISDIGIT (*ptr
))
973 unsigned int arg_index
;
976 arg_index
= arg_count
;
977 if (*ptr
!= '0' && ISDIGIT (*ptr
) && ptr
[1] == '$')
979 arg_index
= *ptr
- '1';
984 args
[arg_index
].type
= Int
;
988 /* Handle explicit numeric value. */
989 while (ISDIGIT (*ptr
))
992 while (strchr ("hlL", *ptr
))
1012 if ((int) arg_no
< 0)
1040 #if defined (__GNUC__) || defined (HAVE_LONG_LONG)
1041 arg_type
= LongLong
;
1056 if (wide_width
== 0)
1060 #if defined (__GNUC__) || defined (HAVE_LONG_DOUBLE)
1061 arg_type
= LongDouble
;
1072 if (*ptr
== 'A' || *ptr
== 'B')
1082 args
[arg_no
].type
= arg_type
;
1091 error_handler_internal (const char *fmt
, va_list ap
)
1093 unsigned int i
, arg_count
;
1094 union _bfd_doprnt_args args
[9];
1096 for (i
= 0; i
< sizeof (args
) / sizeof (args
[0]); i
++)
1099 arg_count
= _bfd_doprnt_scan (fmt
, args
);
1100 for (i
= 0; i
< arg_count
; i
++)
1102 switch (args
[i
].type
)
1105 args
[i
].i
= va_arg (ap
, int);
1108 args
[i
].l
= va_arg (ap
, long);
1111 args
[i
].ll
= va_arg (ap
, long long);
1114 args
[i
].d
= va_arg (ap
, double);
1117 args
[i
].ld
= va_arg (ap
, long double);
1120 args
[i
].p
= va_arg (ap
, void *);
1127 /* PR 4992: Don't interrupt output being sent to stdout. */
1130 if (_bfd_error_program_name
!= NULL
)
1131 fprintf (stderr
, "%s: ", _bfd_error_program_name
);
1133 fprintf (stderr
, "BFD: ");
1135 _bfd_doprnt (stderr
, fmt
, args
);
1137 /* On AIX, putc is implemented as a macro that triggers a -Wunused-value
1138 warning, so use the fputc function to avoid it. */
1139 fputc ('\n', stderr
);
1143 /* This is a function pointer to the routine which should handle BFD
1144 error messages. It is called when a BFD routine encounters an
1145 error for which it wants to print a message. Going through a
1146 function pointer permits a program linked against BFD to intercept
1147 the messages and deal with them itself. */
1149 static bfd_error_handler_type _bfd_error_internal
= error_handler_internal
;
1156 void _bfd_error_handler (const char *fmt, ...) ATTRIBUTE_PRINTF_1;
1159 This is the default routine to handle BFD error messages.
1160 Like fprintf (stderr, ...), but also handles some extra format
1163 %pA section name from section. For group components, prints
1165 %pB file name from bfd. For archive components, prints
1168 Beware: Only supports a maximum of 9 format arguments.
1172 _bfd_error_handler (const char *fmt
, ...)
1177 _bfd_error_internal (fmt
, ap
);
1183 bfd_set_error_handler
1186 bfd_error_handler_type bfd_set_error_handler (bfd_error_handler_type);
1189 Set the BFD error handler function. Returns the previous
1193 bfd_error_handler_type
1194 bfd_set_error_handler (bfd_error_handler_type pnew
)
1196 bfd_error_handler_type pold
;
1198 pold
= _bfd_error_internal
;
1199 _bfd_error_internal
= pnew
;
1205 bfd_set_error_program_name
1208 void bfd_set_error_program_name (const char *);
1211 Set the program name to use when printing a BFD error. This
1212 is printed before the error message followed by a colon and
1213 space. The string must not be changed after it is passed to
1218 bfd_set_error_program_name (const char *name
)
1220 _bfd_error_program_name
= name
;
1227 If BFD finds an internal inconsistency, the bfd assert
1228 handler is called with information on the BFD version, BFD
1229 source file and line. If this happens, most programs linked
1230 against BFD are expected to want to exit with an error, or mark
1231 the current BFD operation as failed, so it is recommended to
1232 override the default handler, which just calls
1233 _bfd_error_handler and continues.
1237 .typedef void (*bfd_assert_handler_type) (const char *bfd_formatmsg,
1238 . const char *bfd_version,
1239 . const char *bfd_file,
1244 /* Note the use of bfd_ prefix on the parameter names above: we want to
1245 show which one is the message and which is the version by naming the
1246 parameters, but avoid polluting the program-using-bfd namespace as
1247 the typedef is visible in the exported headers that the program
1248 includes. Below, it's just for consistency. */
1251 _bfd_default_assert_handler (const char *bfd_formatmsg
,
1252 const char *bfd_version
,
1253 const char *bfd_file
,
1257 _bfd_error_handler (bfd_formatmsg
, bfd_version
, bfd_file
, bfd_line
);
1260 /* Similar to _bfd_error_handler, a program can decide to exit on an
1261 internal BFD error. We use a non-variadic type to simplify passing
1262 on parameters to other functions, e.g. _bfd_error_handler. */
1264 static bfd_assert_handler_type _bfd_assert_handler
= _bfd_default_assert_handler
;
1268 bfd_set_assert_handler
1271 bfd_assert_handler_type bfd_set_assert_handler (bfd_assert_handler_type);
1274 Set the BFD assert handler function. Returns the previous
1278 bfd_assert_handler_type
1279 bfd_set_assert_handler (bfd_assert_handler_type pnew
)
1281 bfd_assert_handler_type pold
;
1283 pold
= _bfd_assert_handler
;
1284 _bfd_assert_handler
= pnew
;
1290 Miscellaneous, Memory Usage, Error reporting, BFD front end
1296 Miscellaneous functions
1301 bfd_get_reloc_upper_bound
1304 long bfd_get_reloc_upper_bound (bfd *abfd, asection *sect);
1307 Return the number of bytes required to store the
1308 relocation information associated with section @var{sect}
1309 attached to bfd @var{abfd}. If an error occurs, return -1.
1314 bfd_get_reloc_upper_bound (bfd
*abfd
, sec_ptr asect
)
1316 if (abfd
->format
!= bfd_object
)
1318 bfd_set_error (bfd_error_invalid_operation
);
1322 return BFD_SEND (abfd
, _get_reloc_upper_bound
, (abfd
, asect
));
1327 bfd_canonicalize_reloc
1330 long bfd_canonicalize_reloc
1331 (bfd *abfd, asection *sec, arelent **loc, asymbol **syms);
1334 Call the back end associated with the open BFD
1335 @var{abfd} and translate the external form of the relocation
1336 information attached to @var{sec} into the internal canonical
1337 form. Place the table into memory at @var{loc}, which has
1338 been preallocated, usually by a call to
1339 <<bfd_get_reloc_upper_bound>>. Returns the number of relocs, or
1342 The @var{syms} table is also needed for horrible internal magic
1347 bfd_canonicalize_reloc (bfd
*abfd
,
1352 if (abfd
->format
!= bfd_object
)
1354 bfd_set_error (bfd_error_invalid_operation
);
1358 return BFD_SEND (abfd
, _bfd_canonicalize_reloc
,
1359 (abfd
, asect
, location
, symbols
));
1368 (bfd *abfd, asection *sec, arelent **rel, unsigned int count);
1371 Set the relocation pointer and count within
1372 section @var{sec} to the values @var{rel} and @var{count}.
1373 The argument @var{abfd} is ignored.
1375 .#define bfd_set_reloc(abfd, asect, location, count) \
1376 . BFD_SEND (abfd, _bfd_set_reloc, (abfd, asect, location, count))
1384 bfd_boolean bfd_set_file_flags (bfd *abfd, flagword flags);
1387 Set the flag word in the BFD @var{abfd} to the value @var{flags}.
1389 Possible errors are:
1390 o <<bfd_error_wrong_format>> - The target bfd was not of object format.
1391 o <<bfd_error_invalid_operation>> - The target bfd was open for reading.
1392 o <<bfd_error_invalid_operation>> -
1393 The flag word contained a bit which was not applicable to the
1394 type of file. E.g., an attempt was made to set the <<D_PAGED>> bit
1395 on a BFD format which does not support demand paging.
1400 bfd_set_file_flags (bfd
*abfd
, flagword flags
)
1402 if (abfd
->format
!= bfd_object
)
1404 bfd_set_error (bfd_error_wrong_format
);
1408 if (bfd_read_p (abfd
))
1410 bfd_set_error (bfd_error_invalid_operation
);
1414 bfd_get_file_flags (abfd
) = flags
;
1415 if ((flags
& bfd_applicable_file_flags (abfd
)) != flags
)
1417 bfd_set_error (bfd_error_invalid_operation
);
1425 bfd_assert (const char *file
, int line
)
1427 /* xgettext:c-format */
1428 (*_bfd_assert_handler
) (_("BFD %s assertion fail %s:%d"),
1429 BFD_VERSION_STRING
, file
, line
);
1432 /* A more or less friendly abort message. In libbfd.h abort is
1433 defined to call this function. */
1436 _bfd_abort (const char *file
, int line
, const char *fn
)
1440 /* xgettext:c-format */
1441 (_("BFD %s internal error, aborting at %s:%d in %s\n"),
1442 BFD_VERSION_STRING
, file
, line
, fn
);
1445 /* xgettext:c-format */
1446 (_("BFD %s internal error, aborting at %s:%d\n"),
1447 BFD_VERSION_STRING
, file
, line
);
1448 _bfd_error_handler (_("Please report this bug.\n"));
1449 _exit (EXIT_FAILURE
);
1457 int bfd_get_arch_size (bfd *abfd);
1460 Returns the normalized architecture address size, in bits, as
1461 determined by the object file's format. By normalized, we mean
1462 either 32 or 64. For ELF, this information is included in the
1463 header. Use bfd_arch_bits_per_address for number of bits in
1464 the architecture address.
1467 Returns the arch size in bits if known, <<-1>> otherwise.
1471 bfd_get_arch_size (bfd
*abfd
)
1473 if (abfd
->xvec
->flavour
== bfd_target_elf_flavour
)
1474 return get_elf_backend_data (abfd
)->s
->arch_size
;
1476 return bfd_arch_bits_per_address (abfd
) > 32 ? 64 : 32;
1481 bfd_get_sign_extend_vma
1484 int bfd_get_sign_extend_vma (bfd *abfd);
1487 Indicates if the target architecture "naturally" sign extends
1488 an address. Some architectures implicitly sign extend address
1489 values when they are converted to types larger than the size
1490 of an address. For instance, bfd_get_start_address() will
1491 return an address sign extended to fill a bfd_vma when this is
1495 Returns <<1>> if the target architecture is known to sign
1496 extend addresses, <<0>> if the target architecture is known to
1497 not sign extend addresses, and <<-1>> otherwise.
1501 bfd_get_sign_extend_vma (bfd
*abfd
)
1505 if (bfd_get_flavour (abfd
) == bfd_target_elf_flavour
)
1506 return get_elf_backend_data (abfd
)->sign_extend_vma
;
1508 name
= bfd_get_target (abfd
);
1510 /* Return a proper value for DJGPP & PE COFF.
1511 This function is required for DWARF2 support, but there is
1512 no place to store this information in the COFF back end.
1513 Should enough other COFF targets add support for DWARF2,
1514 a place will have to be found. Until then, this hack will do. */
1515 if (CONST_STRNEQ (name
, "coff-go32")
1516 || strcmp (name
, "pe-i386") == 0
1517 || strcmp (name
, "pei-i386") == 0
1518 || strcmp (name
, "pe-x86-64") == 0
1519 || strcmp (name
, "pei-x86-64") == 0
1520 || strcmp (name
, "pe-arm-wince-little") == 0
1521 || strcmp (name
, "pei-arm-wince-little") == 0
1522 || strcmp (name
, "aixcoff-rs6000") == 0
1523 || strcmp (name
, "aix5coff64-rs6000") == 0)
1526 if (CONST_STRNEQ (name
, "mach-o"))
1529 bfd_set_error (bfd_error_wrong_format
);
1535 bfd_set_start_address
1538 bfd_boolean bfd_set_start_address (bfd *abfd, bfd_vma vma);
1541 Make @var{vma} the entry point of output BFD @var{abfd}.
1544 Returns <<TRUE>> on success, <<FALSE>> otherwise.
1548 bfd_set_start_address (bfd
*abfd
, bfd_vma vma
)
1550 abfd
->start_address
= vma
;
1559 unsigned int bfd_get_gp_size (bfd *abfd);
1562 Return the maximum size of objects to be optimized using the GP
1563 register under MIPS ECOFF. This is typically set by the <<-G>>
1564 argument to the compiler, assembler or linker.
1568 bfd_get_gp_size (bfd
*abfd
)
1570 if (abfd
->format
== bfd_object
)
1572 if (abfd
->xvec
->flavour
== bfd_target_ecoff_flavour
)
1573 return ecoff_data (abfd
)->gp_size
;
1574 else if (abfd
->xvec
->flavour
== bfd_target_elf_flavour
)
1575 return elf_gp_size (abfd
);
1585 void bfd_set_gp_size (bfd *abfd, unsigned int i);
1588 Set the maximum size of objects to be optimized using the GP
1589 register under ECOFF or MIPS ELF. This is typically set by
1590 the <<-G>> argument to the compiler, assembler or linker.
1594 bfd_set_gp_size (bfd
*abfd
, unsigned int i
)
1596 /* Don't try to set GP size on an archive or core file! */
1597 if (abfd
->format
!= bfd_object
)
1600 if (abfd
->xvec
->flavour
== bfd_target_ecoff_flavour
)
1601 ecoff_data (abfd
)->gp_size
= i
;
1602 else if (abfd
->xvec
->flavour
== bfd_target_elf_flavour
)
1603 elf_gp_size (abfd
) = i
;
1606 /* Get the GP value. This is an internal function used by some of the
1607 relocation special_function routines on targets which support a GP
1611 _bfd_get_gp_value (bfd
*abfd
)
1615 if (abfd
->format
!= bfd_object
)
1618 if (abfd
->xvec
->flavour
== bfd_target_ecoff_flavour
)
1619 return ecoff_data (abfd
)->gp
;
1620 else if (abfd
->xvec
->flavour
== bfd_target_elf_flavour
)
1621 return elf_gp (abfd
);
1626 /* Set the GP value. */
1629 _bfd_set_gp_value (bfd
*abfd
, bfd_vma v
)
1633 if (abfd
->format
!= bfd_object
)
1636 if (abfd
->xvec
->flavour
== bfd_target_ecoff_flavour
)
1637 ecoff_data (abfd
)->gp
= v
;
1638 else if (abfd
->xvec
->flavour
== bfd_target_elf_flavour
)
1647 bfd_vma bfd_scan_vma (const char *string, const char **end, int base);
1650 Convert, like <<strtoul>>, a numerical expression
1651 @var{string} into a <<bfd_vma>> integer, and return that integer.
1652 (Though without as many bells and whistles as <<strtoul>>.)
1653 The expression is assumed to be unsigned (i.e., positive).
1654 If given a @var{base}, it is used as the base for conversion.
1655 A base of 0 causes the function to interpret the string
1656 in hex if a leading "0x" or "0X" is found, otherwise
1657 in octal if a leading zero is found, otherwise in decimal.
1659 If the value would overflow, the maximum <<bfd_vma>> value is
1664 bfd_scan_vma (const char *string
, const char **end
, int base
)
1668 unsigned int cutlim
;
1671 /* Let the host do it if possible. */
1672 if (sizeof (bfd_vma
) <= sizeof (unsigned long))
1673 return strtoul (string
, (char **) end
, base
);
1675 #if defined (HAVE_STRTOULL) && defined (HAVE_LONG_LONG)
1676 if (sizeof (bfd_vma
) <= sizeof (unsigned long long))
1677 return strtoull (string
, (char **) end
, base
);
1682 if (string
[0] == '0')
1684 if ((string
[1] == 'x') || (string
[1] == 'X'))
1691 if ((base
< 2) || (base
> 36))
1696 && (string
[1] == 'x' || string
[1] == 'X')
1697 && ISXDIGIT (string
[2]))
1702 cutoff
= (~ (bfd_vma
) 0) / (bfd_vma
) base
;
1703 cutlim
= (~ (bfd_vma
) 0) % (bfd_vma
) base
;
1711 if (ISDIGIT (digit
))
1712 digit
= digit
- '0';
1713 else if (ISALPHA (digit
))
1714 digit
= TOUPPER (digit
) - 'A' + 10;
1717 if (digit
>= (unsigned int) base
)
1719 if (value
> cutoff
|| (value
== cutoff
&& digit
> cutlim
))
1721 value
= value
* base
+ digit
;
1726 value
= ~ (bfd_vma
) 0;
1736 bfd_copy_private_header_data
1739 bfd_boolean bfd_copy_private_header_data (bfd *ibfd, bfd *obfd);
1742 Copy private BFD header information from the BFD @var{ibfd} to the
1743 the BFD @var{obfd}. This copies information that may require
1744 sections to exist, but does not require symbol tables. Return
1745 <<true>> on success, <<false>> on error.
1746 Possible error returns are:
1748 o <<bfd_error_no_memory>> -
1749 Not enough memory exists to create private data for @var{obfd}.
1751 .#define bfd_copy_private_header_data(ibfd, obfd) \
1752 . BFD_SEND (obfd, _bfd_copy_private_header_data, \
1759 bfd_copy_private_bfd_data
1762 bfd_boolean bfd_copy_private_bfd_data (bfd *ibfd, bfd *obfd);
1765 Copy private BFD information from the BFD @var{ibfd} to the
1766 the BFD @var{obfd}. Return <<TRUE>> on success, <<FALSE>> on error.
1767 Possible error returns are:
1769 o <<bfd_error_no_memory>> -
1770 Not enough memory exists to create private data for @var{obfd}.
1772 .#define bfd_copy_private_bfd_data(ibfd, obfd) \
1773 . BFD_SEND (obfd, _bfd_copy_private_bfd_data, \
1780 bfd_set_private_flags
1783 bfd_boolean bfd_set_private_flags (bfd *abfd, flagword flags);
1786 Set private BFD flag information in the BFD @var{abfd}.
1787 Return <<TRUE>> on success, <<FALSE>> on error. Possible error
1790 o <<bfd_error_no_memory>> -
1791 Not enough memory exists to create private data for @var{obfd}.
1793 .#define bfd_set_private_flags(abfd, flags) \
1794 . BFD_SEND (abfd, _bfd_set_private_flags, (abfd, flags))
1803 The following functions exist but have not yet been documented.
1805 .#define bfd_sizeof_headers(abfd, info) \
1806 . BFD_SEND (abfd, _bfd_sizeof_headers, (abfd, info))
1808 .#define bfd_find_nearest_line(abfd, sec, syms, off, file, func, line) \
1809 . BFD_SEND (abfd, _bfd_find_nearest_line, \
1810 . (abfd, syms, sec, off, file, func, line, NULL))
1812 .#define bfd_find_nearest_line_discriminator(abfd, sec, syms, off, file, func, \
1814 . BFD_SEND (abfd, _bfd_find_nearest_line, \
1815 . (abfd, syms, sec, off, file, func, line, disc))
1817 .#define bfd_find_line(abfd, syms, sym, file, line) \
1818 . BFD_SEND (abfd, _bfd_find_line, \
1819 . (abfd, syms, sym, file, line))
1821 .#define bfd_find_inliner_info(abfd, file, func, line) \
1822 . BFD_SEND (abfd, _bfd_find_inliner_info, \
1823 . (abfd, file, func, line))
1825 .#define bfd_debug_info_start(abfd) \
1826 . BFD_SEND (abfd, _bfd_debug_info_start, (abfd))
1828 .#define bfd_debug_info_end(abfd) \
1829 . BFD_SEND (abfd, _bfd_debug_info_end, (abfd))
1831 .#define bfd_debug_info_accumulate(abfd, section) \
1832 . BFD_SEND (abfd, _bfd_debug_info_accumulate, (abfd, section))
1834 .#define bfd_stat_arch_elt(abfd, stat) \
1835 . BFD_SEND (abfd, _bfd_stat_arch_elt,(abfd, stat))
1837 .#define bfd_update_armap_timestamp(abfd) \
1838 . BFD_SEND (abfd, _bfd_update_armap_timestamp, (abfd))
1840 .#define bfd_set_arch_mach(abfd, arch, mach)\
1841 . BFD_SEND ( abfd, _bfd_set_arch_mach, (abfd, arch, mach))
1843 .#define bfd_relax_section(abfd, section, link_info, again) \
1844 . BFD_SEND (abfd, _bfd_relax_section, (abfd, section, link_info, again))
1846 .#define bfd_gc_sections(abfd, link_info) \
1847 . BFD_SEND (abfd, _bfd_gc_sections, (abfd, link_info))
1849 .#define bfd_lookup_section_flags(link_info, flag_info, section) \
1850 . BFD_SEND (abfd, _bfd_lookup_section_flags, (link_info, flag_info, section))
1852 .#define bfd_merge_sections(abfd, link_info) \
1853 . BFD_SEND (abfd, _bfd_merge_sections, (abfd, link_info))
1855 .#define bfd_is_group_section(abfd, sec) \
1856 . BFD_SEND (abfd, _bfd_is_group_section, (abfd, sec))
1858 .#define bfd_discard_group(abfd, sec) \
1859 . BFD_SEND (abfd, _bfd_discard_group, (abfd, sec))
1861 .#define bfd_link_hash_table_create(abfd) \
1862 . BFD_SEND (abfd, _bfd_link_hash_table_create, (abfd))
1864 .#define bfd_link_add_symbols(abfd, info) \
1865 . BFD_SEND (abfd, _bfd_link_add_symbols, (abfd, info))
1867 .#define bfd_link_just_syms(abfd, sec, info) \
1868 . BFD_SEND (abfd, _bfd_link_just_syms, (sec, info))
1870 .#define bfd_final_link(abfd, info) \
1871 . BFD_SEND (abfd, _bfd_final_link, (abfd, info))
1873 .#define bfd_free_cached_info(abfd) \
1874 . BFD_SEND (abfd, _bfd_free_cached_info, (abfd))
1876 .#define bfd_get_dynamic_symtab_upper_bound(abfd) \
1877 . BFD_SEND (abfd, _bfd_get_dynamic_symtab_upper_bound, (abfd))
1879 .#define bfd_print_private_bfd_data(abfd, file)\
1880 . BFD_SEND (abfd, _bfd_print_private_bfd_data, (abfd, file))
1882 .#define bfd_canonicalize_dynamic_symtab(abfd, asymbols) \
1883 . BFD_SEND (abfd, _bfd_canonicalize_dynamic_symtab, (abfd, asymbols))
1885 .#define bfd_get_synthetic_symtab(abfd, count, syms, dyncount, dynsyms, ret) \
1886 . BFD_SEND (abfd, _bfd_get_synthetic_symtab, (abfd, count, syms, \
1887 . dyncount, dynsyms, ret))
1889 .#define bfd_get_dynamic_reloc_upper_bound(abfd) \
1890 . BFD_SEND (abfd, _bfd_get_dynamic_reloc_upper_bound, (abfd))
1892 .#define bfd_canonicalize_dynamic_reloc(abfd, arels, asyms) \
1893 . BFD_SEND (abfd, _bfd_canonicalize_dynamic_reloc, (abfd, arels, asyms))
1895 .extern bfd_byte *bfd_get_relocated_section_contents
1896 . (bfd *, struct bfd_link_info *, struct bfd_link_order *, bfd_byte *,
1897 . bfd_boolean, asymbol **);
1903 bfd_get_relocated_section_contents (bfd
*abfd
,
1904 struct bfd_link_info
*link_info
,
1905 struct bfd_link_order
*link_order
,
1907 bfd_boolean relocatable
,
1911 bfd_byte
*(*fn
) (bfd
*, struct bfd_link_info
*, struct bfd_link_order
*,
1912 bfd_byte
*, bfd_boolean
, asymbol
**);
1914 if (link_order
->type
== bfd_indirect_link_order
)
1916 abfd2
= link_order
->u
.indirect
.section
->owner
;
1923 fn
= abfd2
->xvec
->_bfd_get_relocated_section_contents
;
1925 return (*fn
) (abfd
, link_info
, link_order
, data
, relocatable
, symbols
);
1928 /* Record information about an ELF program header. */
1931 bfd_record_phdr (bfd
*abfd
,
1933 bfd_boolean flags_valid
,
1935 bfd_boolean at_valid
,
1937 bfd_boolean includes_filehdr
,
1938 bfd_boolean includes_phdrs
,
1942 struct elf_segment_map
*m
, **pm
;
1945 if (bfd_get_flavour (abfd
) != bfd_target_elf_flavour
)
1948 amt
= sizeof (struct elf_segment_map
);
1949 amt
+= ((bfd_size_type
) count
- 1) * sizeof (asection
*);
1950 m
= (struct elf_segment_map
*) bfd_zalloc (abfd
, amt
);
1957 m
->p_flags_valid
= flags_valid
;
1958 m
->p_paddr_valid
= at_valid
;
1959 m
->includes_filehdr
= includes_filehdr
;
1960 m
->includes_phdrs
= includes_phdrs
;
1963 memcpy (m
->sections
, secs
, count
* sizeof (asection
*));
1965 for (pm
= &elf_seg_map (abfd
); *pm
!= NULL
; pm
= &(*pm
)->next
)
1973 /* Return true iff this target is 32-bit. */
1978 if (bfd_get_flavour (abfd
) == bfd_target_elf_flavour
)
1980 const struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
1981 return bed
->s
->elfclass
== ELFCLASS32
;
1984 /* For non-ELF targets, use architecture information. */
1985 return bfd_arch_bits_per_address (abfd
) <= 32;
1989 /* bfd_sprintf_vma and bfd_fprintf_vma display an address in the
1990 target's address size. */
1993 bfd_sprintf_vma (bfd
*abfd ATTRIBUTE_UNUSED
, char *buf
, bfd_vma value
)
1998 sprintf (buf
, "%08lx", (unsigned long) value
& 0xffffffff);
2002 sprintf_vma (buf
, value
);
2006 bfd_fprintf_vma (bfd
*abfd ATTRIBUTE_UNUSED
, void *stream
, bfd_vma value
)
2011 fprintf ((FILE *) stream
, "%08lx", (unsigned long) value
& 0xffffffff);
2015 fprintf_vma ((FILE *) stream
, value
);
2023 bfd_boolean bfd_alt_mach_code (bfd *abfd, int alternative);
2027 When more than one machine code number is available for the
2028 same machine type, this function can be used to switch between
2029 the preferred one (alternative == 0) and any others. Currently,
2030 only ELF supports this feature, with up to two alternate
2035 bfd_alt_mach_code (bfd
*abfd
, int alternative
)
2037 if (bfd_get_flavour (abfd
) == bfd_target_elf_flavour
)
2041 switch (alternative
)
2044 code
= get_elf_backend_data (abfd
)->elf_machine_code
;
2048 code
= get_elf_backend_data (abfd
)->elf_machine_alt1
;
2054 code
= get_elf_backend_data (abfd
)->elf_machine_alt2
;
2063 elf_elfheader (abfd
)->e_machine
= code
;
2073 bfd_emul_get_maxpagesize
2076 bfd_vma bfd_emul_get_maxpagesize (const char *);
2079 Returns the maximum page size, in bytes, as determined by
2083 Returns the maximum page size in bytes for ELF, 0 otherwise.
2087 bfd_emul_get_maxpagesize (const char *emul
)
2089 const bfd_target
*target
;
2091 target
= bfd_find_target (emul
, NULL
);
2093 && target
->flavour
== bfd_target_elf_flavour
)
2094 return xvec_get_elf_backend_data (target
)->maxpagesize
;
2100 bfd_elf_set_pagesize (const bfd_target
*target
, bfd_vma size
,
2101 int offset
, const bfd_target
*orig_target
)
2103 if (target
->flavour
== bfd_target_elf_flavour
)
2105 const struct elf_backend_data
*bed
;
2107 bed
= xvec_get_elf_backend_data (target
);
2108 *((bfd_vma
*) ((char *) bed
+ offset
)) = size
;
2111 if (target
->alternative_target
2112 && target
->alternative_target
!= orig_target
)
2113 bfd_elf_set_pagesize (target
->alternative_target
, size
, offset
,
2119 bfd_emul_set_maxpagesize
2122 void bfd_emul_set_maxpagesize (const char *, bfd_vma);
2125 For ELF, set the maximum page size for the emulation. It is
2126 a no-op for other formats.
2131 bfd_emul_set_maxpagesize (const char *emul
, bfd_vma size
)
2133 const bfd_target
*target
;
2135 target
= bfd_find_target (emul
, NULL
);
2137 bfd_elf_set_pagesize (target
, size
,
2138 offsetof (struct elf_backend_data
,
2139 maxpagesize
), target
);
2144 bfd_emul_get_commonpagesize
2147 bfd_vma bfd_emul_get_commonpagesize (const char *, bfd_boolean);
2150 Returns the common page size, in bytes, as determined by
2154 Returns the common page size in bytes for ELF, 0 otherwise.
2158 bfd_emul_get_commonpagesize (const char *emul
, bfd_boolean relro
)
2160 const bfd_target
*target
;
2162 target
= bfd_find_target (emul
, NULL
);
2164 && target
->flavour
== bfd_target_elf_flavour
)
2166 const struct elf_backend_data
*bed
;
2168 bed
= xvec_get_elf_backend_data (target
);
2170 return bed
->relropagesize
;
2172 return bed
->commonpagesize
;
2179 bfd_emul_set_commonpagesize
2182 void bfd_emul_set_commonpagesize (const char *, bfd_vma);
2185 For ELF, set the common page size for the emulation. It is
2186 a no-op for other formats.
2191 bfd_emul_set_commonpagesize (const char *emul
, bfd_vma size
)
2193 const bfd_target
*target
;
2195 target
= bfd_find_target (emul
, NULL
);
2197 bfd_elf_set_pagesize (target
, size
,
2198 offsetof (struct elf_backend_data
,
2199 commonpagesize
), target
);
2207 char *bfd_demangle (bfd *, const char *, int);
2210 Wrapper around cplus_demangle. Strips leading underscores and
2211 other such chars that would otherwise confuse the demangler.
2212 If passed a g++ v3 ABI mangled name, returns a buffer allocated
2213 with malloc holding the demangled name. Returns NULL otherwise
2214 and on memory alloc failure.
2218 bfd_demangle (bfd
*abfd
, const char *name
, int options
)
2221 const char *pre
, *suf
;
2223 bfd_boolean skip_lead
;
2225 skip_lead
= (abfd
!= NULL
2227 && bfd_get_symbol_leading_char (abfd
) == *name
);
2231 /* This is a hack for better error reporting on XCOFF, PowerPC64-ELF
2232 or the MS PE format. These formats have a number of leading '.'s
2233 on at least some symbols, so we remove all dots to avoid
2234 confusing the demangler. */
2236 while (*name
== '.' || *name
== '$')
2238 pre_len
= name
- pre
;
2240 /* Strip off @plt and suchlike too. */
2242 suf
= strchr (name
, '@');
2245 alloc
= (char *) bfd_malloc (suf
- name
+ 1);
2248 memcpy (alloc
, name
, suf
- name
);
2249 alloc
[suf
- name
] = '\0';
2253 res
= cplus_demangle (name
, options
);
2262 size_t len
= strlen (pre
) + 1;
2263 alloc
= (char *) bfd_malloc (len
);
2266 memcpy (alloc
, pre
, len
);
2272 /* Put back any prefix or suffix. */
2273 if (pre_len
!= 0 || suf
!= NULL
)
2282 suf_len
= strlen (suf
) + 1;
2283 final
= (char *) bfd_malloc (pre_len
+ len
+ suf_len
);
2286 memcpy (final
, pre
, pre_len
);
2287 memcpy (final
+ pre_len
, res
, len
);
2288 memcpy (final
+ pre_len
+ len
, suf
, suf_len
);
2299 bfd_update_compression_header
2302 void bfd_update_compression_header
2303 (bfd *abfd, bfd_byte *contents, asection *sec);
2306 Set the compression header at CONTENTS of SEC in ABFD and update
2307 elf_section_flags for compression.
2311 bfd_update_compression_header (bfd
*abfd
, bfd_byte
*contents
,
2314 if ((abfd
->flags
& BFD_COMPRESS
) != 0)
2316 if (bfd_get_flavour (abfd
) == bfd_target_elf_flavour
)
2318 if ((abfd
->flags
& BFD_COMPRESS_GABI
) != 0)
2320 const struct elf_backend_data
*bed
2321 = get_elf_backend_data (abfd
);
2323 /* Set the SHF_COMPRESSED bit. */
2324 elf_section_flags (sec
) |= SHF_COMPRESSED
;
2326 if (bed
->s
->elfclass
== ELFCLASS32
)
2328 Elf32_External_Chdr
*echdr
2329 = (Elf32_External_Chdr
*) contents
;
2330 bfd_put_32 (abfd
, ELFCOMPRESS_ZLIB
, &echdr
->ch_type
);
2331 bfd_put_32 (abfd
, sec
->size
, &echdr
->ch_size
);
2332 bfd_put_32 (abfd
, 1 << sec
->alignment_power
,
2333 &echdr
->ch_addralign
);
2337 Elf64_External_Chdr
*echdr
2338 = (Elf64_External_Chdr
*) contents
;
2339 bfd_put_32 (abfd
, ELFCOMPRESS_ZLIB
, &echdr
->ch_type
);
2340 bfd_put_32 (abfd
, 0, &echdr
->ch_reserved
);
2341 bfd_put_64 (abfd
, sec
->size
, &echdr
->ch_size
);
2342 bfd_put_64 (abfd
, 1 << sec
->alignment_power
,
2343 &echdr
->ch_addralign
);
2348 /* Clear the SHF_COMPRESSED bit. */
2349 elf_section_flags (sec
) &= ~SHF_COMPRESSED
;
2351 /* Write the zlib header. It should be "ZLIB" followed by
2352 the uncompressed section size, 8 bytes in big-endian
2354 memcpy (contents
, "ZLIB", 4);
2355 bfd_putb64 (sec
->size
, contents
+ 4);
2365 bfd_check_compression_header
2368 bfd_boolean bfd_check_compression_header
2369 (bfd *abfd, bfd_byte *contents, asection *sec,
2370 bfd_size_type *uncompressed_size);
2373 Check the compression header at CONTENTS of SEC in ABFD and
2374 store the uncompressed size in UNCOMPRESSED_SIZE if the
2375 compression header is valid.
2378 Return TRUE if the compression header is valid.
2382 bfd_check_compression_header (bfd
*abfd
, bfd_byte
*contents
,
2384 bfd_size_type
*uncompressed_size
)
2386 if (bfd_get_flavour (abfd
) == bfd_target_elf_flavour
2387 && (elf_section_flags (sec
) & SHF_COMPRESSED
) != 0)
2389 Elf_Internal_Chdr chdr
;
2390 const struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
2391 if (bed
->s
->elfclass
== ELFCLASS32
)
2393 Elf32_External_Chdr
*echdr
= (Elf32_External_Chdr
*) contents
;
2394 chdr
.ch_type
= bfd_get_32 (abfd
, &echdr
->ch_type
);
2395 chdr
.ch_size
= bfd_get_32 (abfd
, &echdr
->ch_size
);
2396 chdr
.ch_addralign
= bfd_get_32 (abfd
, &echdr
->ch_addralign
);
2400 Elf64_External_Chdr
*echdr
= (Elf64_External_Chdr
*) contents
;
2401 chdr
.ch_type
= bfd_get_32 (abfd
, &echdr
->ch_type
);
2402 chdr
.ch_size
= bfd_get_64 (abfd
, &echdr
->ch_size
);
2403 chdr
.ch_addralign
= bfd_get_64 (abfd
, &echdr
->ch_addralign
);
2405 if (chdr
.ch_type
== ELFCOMPRESS_ZLIB
2406 && chdr
.ch_addralign
== 1U << sec
->alignment_power
)
2408 *uncompressed_size
= chdr
.ch_size
;
2418 bfd_get_compression_header_size
2421 int bfd_get_compression_header_size (bfd *abfd, asection *sec);
2424 Return the size of the compression header of SEC in ABFD.
2427 Return the size of the compression header in bytes.
2431 bfd_get_compression_header_size (bfd
*abfd
, asection
*sec
)
2433 if (bfd_get_flavour (abfd
) == bfd_target_elf_flavour
)
2437 if (!(abfd
->flags
& BFD_COMPRESS_GABI
))
2440 else if (!(elf_section_flags (sec
) & SHF_COMPRESSED
))
2443 if (get_elf_backend_data (abfd
)->s
->elfclass
== ELFCLASS32
)
2444 return sizeof (Elf32_External_Chdr
);
2446 return sizeof (Elf64_External_Chdr
);
2454 bfd_convert_section_size
2457 bfd_size_type bfd_convert_section_size
2458 (bfd *ibfd, asection *isec, bfd *obfd, bfd_size_type size);
2461 Convert the size @var{size} of the section @var{isec} in input
2462 BFD @var{ibfd} to the section size in output BFD @var{obfd}.
2466 bfd_convert_section_size (bfd
*ibfd
, sec_ptr isec
, bfd
*obfd
,
2469 bfd_size_type hdr_size
;
2471 /* Do nothing if input file will be decompressed. */
2472 if ((ibfd
->flags
& BFD_DECOMPRESS
))
2475 /* Do nothing if either input or output aren't ELF. */
2476 if (bfd_get_flavour (ibfd
) != bfd_target_elf_flavour
2477 || bfd_get_flavour (obfd
) != bfd_target_elf_flavour
)
2480 /* Do nothing if ELF classes of input and output are the same. */
2481 if (get_elf_backend_data (ibfd
)->s
->elfclass
2482 == get_elf_backend_data (obfd
)->s
->elfclass
)
2485 /* Do nothing if the input section isn't a SHF_COMPRESSED section. */
2486 hdr_size
= bfd_get_compression_header_size (ibfd
, isec
);
2490 /* Adjust the size of the output SHF_COMPRESSED section. */
2491 if (hdr_size
== sizeof (Elf32_External_Chdr
))
2492 return (size
- sizeof (Elf32_External_Chdr
)
2493 + sizeof (Elf64_External_Chdr
));
2495 return (size
- sizeof (Elf64_External_Chdr
)
2496 + sizeof (Elf32_External_Chdr
));
2501 bfd_convert_section_contents
2504 bfd_boolean bfd_convert_section_contents
2505 (bfd *ibfd, asection *isec, bfd *obfd,
2506 bfd_byte **ptr, bfd_size_type *ptr_size);
2509 Convert the contents, stored in @var{*ptr}, of the section
2510 @var{isec} in input BFD @var{ibfd} to output BFD @var{obfd}
2511 if needed. The original buffer pointed to by @var{*ptr} may
2512 be freed and @var{*ptr} is returned with memory malloc'd by this
2513 function, and the new size written to @var{ptr_size}.
2517 bfd_convert_section_contents (bfd
*ibfd
, sec_ptr isec
, bfd
*obfd
,
2518 bfd_byte
**ptr
, bfd_size_type
*ptr_size
)
2521 bfd_size_type ihdr_size
, ohdr_size
, size
;
2522 Elf_Internal_Chdr chdr
;
2523 bfd_boolean use_memmove
;
2525 /* Do nothing if input file will be decompressed. */
2526 if ((ibfd
->flags
& BFD_DECOMPRESS
))
2529 /* Do nothing if either input or output aren't ELF. */
2530 if (bfd_get_flavour (ibfd
) != bfd_target_elf_flavour
2531 || bfd_get_flavour (obfd
) != bfd_target_elf_flavour
)
2534 /* Do nothing if ELF classes of input and output are the same. */
2535 if (get_elf_backend_data (ibfd
)->s
->elfclass
2536 == get_elf_backend_data (obfd
)->s
->elfclass
)
2539 /* Do nothing if the input section isn't a SHF_COMPRESSED section. */
2540 ihdr_size
= bfd_get_compression_header_size (ibfd
, isec
);
2546 /* Convert the contents of the input SHF_COMPRESSED section to
2547 output. Get the input compression header and the size of the
2548 output compression header. */
2549 if (ihdr_size
== sizeof (Elf32_External_Chdr
))
2551 Elf32_External_Chdr
*echdr
= (Elf32_External_Chdr
*) contents
;
2552 chdr
.ch_type
= bfd_get_32 (ibfd
, &echdr
->ch_type
);
2553 chdr
.ch_size
= bfd_get_32 (ibfd
, &echdr
->ch_size
);
2554 chdr
.ch_addralign
= bfd_get_32 (ibfd
, &echdr
->ch_addralign
);
2556 ohdr_size
= sizeof (Elf64_External_Chdr
);
2558 use_memmove
= FALSE
;
2562 Elf64_External_Chdr
*echdr
= (Elf64_External_Chdr
*) contents
;
2563 chdr
.ch_type
= bfd_get_32 (ibfd
, &echdr
->ch_type
);
2564 chdr
.ch_size
= bfd_get_64 (ibfd
, &echdr
->ch_size
);
2565 chdr
.ch_addralign
= bfd_get_64 (ibfd
, &echdr
->ch_addralign
);
2567 ohdr_size
= sizeof (Elf32_External_Chdr
);
2571 size
= bfd_get_section_size (isec
) - ihdr_size
+ ohdr_size
;
2574 contents
= (bfd_byte
*) bfd_malloc (size
);
2575 if (contents
== NULL
)
2579 /* Write out the output compression header. */
2580 if (ohdr_size
== sizeof (Elf32_External_Chdr
))
2582 Elf32_External_Chdr
*echdr
= (Elf32_External_Chdr
*) contents
;
2583 bfd_put_32 (obfd
, ELFCOMPRESS_ZLIB
, &echdr
->ch_type
);
2584 bfd_put_32 (obfd
, chdr
.ch_size
, &echdr
->ch_size
);
2585 bfd_put_32 (obfd
, chdr
.ch_addralign
, &echdr
->ch_addralign
);
2589 Elf64_External_Chdr
*echdr
= (Elf64_External_Chdr
*) contents
;
2590 bfd_put_32 (obfd
, ELFCOMPRESS_ZLIB
, &echdr
->ch_type
);
2591 bfd_put_32 (obfd
, 0, &echdr
->ch_reserved
);
2592 bfd_put_64 (obfd
, chdr
.ch_size
, &echdr
->ch_size
);
2593 bfd_put_64 (obfd
, chdr
.ch_addralign
, &echdr
->ch_addralign
);
2596 /* Copy the compressed contents. */
2598 memmove (contents
+ ohdr_size
, *ptr
+ ihdr_size
, size
- ohdr_size
);
2601 memcpy (contents
+ ohdr_size
, *ptr
+ ihdr_size
, size
- ohdr_size
);