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 _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}.
505 @var{error_tag} must not be bfd_error_on_input. Use
506 bfd_set_input_error for input errors instead.
510 bfd_set_error (bfd_error_type error_tag
)
512 bfd_error
= error_tag
;
513 if (bfd_error
>= bfd_error_on_input
)
522 void bfd_set_input_error (bfd *input, bfd_error_type error_tag);
526 Set the BFD error condition to be bfd_error_on_input.
527 @var{input} is the input bfd where the error occurred, and
528 @var{error_tag} the bfd_error_type error.
532 bfd_set_input_error (bfd
*input
, bfd_error_type error_tag
)
534 /* This is an error that occurred during bfd_close when writing an
535 archive, but on one of the input files. */
536 bfd_error
= bfd_error_on_input
;
538 input_error
= error_tag
;
539 if (input_error
>= bfd_error_on_input
)
548 const char *bfd_errmsg (bfd_error_type error_tag);
551 Return a string describing the error @var{error_tag}, or
552 the system error if @var{error_tag} is <<bfd_error_system_call>>.
556 bfd_errmsg (bfd_error_type error_tag
)
561 if (error_tag
== bfd_error_on_input
)
564 const char *msg
= bfd_errmsg (input_error
);
566 if (asprintf (&buf
, _(bfd_errmsgs
[error_tag
]), input_bfd
->filename
, msg
)
570 /* Ick, what to do on out of memory? */
574 if (error_tag
== bfd_error_system_call
)
575 return xstrerror (errno
);
577 if (error_tag
> bfd_error_invalid_error_code
)
578 error_tag
= bfd_error_invalid_error_code
; /* sanity check */
580 return _(bfd_errmsgs
[error_tag
]);
588 void bfd_perror (const char *message);
591 Print to the standard error stream a string describing the
592 last BFD error that occurred, or the last system error if
593 the last BFD error was a system call failure. If @var{message}
594 is non-NULL and non-empty, the error string printed is preceded
595 by @var{message}, a colon, and a space. It is followed by a newline.
599 bfd_perror (const char *message
)
602 if (message
== NULL
|| *message
== '\0')
603 fprintf (stderr
, "%s\n", bfd_errmsg (bfd_get_error ()));
605 fprintf (stderr
, "%s: %s\n", message
, bfd_errmsg (bfd_get_error ()));
613 Some BFD functions want to print messages describing the
614 problem. They call a BFD error handler function. This
615 function may be overridden by the program.
617 The BFD error handler acts like vprintf.
621 .typedef void (*bfd_error_handler_type) (const char *, va_list);
625 /* The program name used when printing BFD error messages. */
627 static const char *_bfd_error_program_name
;
629 /* Support for positional parameters. */
631 union _bfd_doprnt_args
651 /* This macro and _bfd_doprnt taken from libiberty _doprnt.c, tidied a
652 little and extended to handle '%pA', '%pB' and positional parameters. */
654 #define PRINT_TYPE(TYPE, FIELD) \
657 TYPE value = (TYPE) args[arg_no].FIELD; \
658 result = fprintf (stream, specifier, value); \
662 _bfd_doprnt (FILE *stream
, const char *format
, union _bfd_doprnt_args
*args
)
664 const char *ptr
= format
;
666 int total_printed
= 0;
667 unsigned int arg_count
= 0;
675 /* While we have regular characters, print them. */
676 char *end
= strchr (ptr
, '%');
678 result
= fprintf (stream
, "%.*s", (int) (end
- ptr
), ptr
);
680 result
= fprintf (stream
, "%s", ptr
);
683 else if (ptr
[1] == '%')
691 /* We have a format specifier! */
692 char *sptr
= specifier
;
693 int wide_width
= 0, short_width
= 0;
696 /* Copy the % and move forward. */
699 /* Check for a positional parameter. */
701 if (*ptr
!= '0' && ISDIGIT (*ptr
) && ptr
[1] == '$')
707 /* Move past flags. */
708 while (strchr ("-+ #0'I", *ptr
))
714 unsigned int arg_index
;
717 arg_index
= arg_count
;
718 if (*ptr
!= '0' && ISDIGIT (*ptr
) && ptr
[1] == '$')
720 arg_index
= *ptr
- '1';
723 value
= abs (args
[arg_index
].i
);
725 sptr
+= sprintf (sptr
, "%d", value
);
728 /* Handle explicit numeric value. */
729 while (ISDIGIT (*ptr
))
735 /* Copy and go past the period. */
740 unsigned int arg_index
;
743 arg_index
= arg_count
;
744 if (*ptr
!= '0' && ISDIGIT (*ptr
) && ptr
[1] == '$')
746 arg_index
= *ptr
- '1';
749 value
= abs (args
[arg_index
].i
);
751 sptr
+= sprintf (sptr
, "%d", value
);
754 /* Handle explicit numeric value. */
755 while (ISDIGIT (*ptr
))
758 while (strchr ("hlL", *ptr
))
777 /* Copy the type specifier, and NULL terminate. */
780 if ((int) arg_no
< 0)
793 /* Short values are promoted to int, so just copy it
794 as an int and trust the C library printf to cast it
795 to the right width. */
806 PRINT_TYPE (long, l
);
810 #if defined (__MSVCRT__)
817 #if defined (__GNUC__) || defined (HAVE_LONG_LONG)
818 PRINT_TYPE (long long, ll
);
820 /* Fake it and hope for the best. */
821 PRINT_TYPE (long, l
);
835 PRINT_TYPE (double, d
);
838 #if defined (__GNUC__) || defined (HAVE_LONG_DOUBLE)
839 PRINT_TYPE (long double, ld
);
841 /* Fake it and hope for the best. */
842 PRINT_TYPE (double, d
);
848 PRINT_TYPE (char *, p
);
855 const char *group
= NULL
;
856 struct coff_comdat_info
*ci
;
859 sec
= (asection
*) args
[arg_no
].p
;
861 /* Invoking %pA with a null section pointer is an
866 && bfd_get_flavour (abfd
) == bfd_target_elf_flavour
867 && elf_next_in_group (sec
) != NULL
868 && (sec
->flags
& SEC_GROUP
) == 0)
869 group
= elf_group_name (sec
);
870 else if (abfd
!= NULL
871 && bfd_get_flavour (abfd
) == bfd_target_coff_flavour
872 && (ci
= bfd_coff_get_comdat_section (sec
->owner
,
876 result
= fprintf (stream
, "%s[%s]", sec
->name
, group
);
878 result
= fprintf (stream
, "%s", sec
->name
);
880 else if (*ptr
== 'B')
885 abfd
= (bfd
*) args
[arg_no
].p
;
887 /* Invoking %pB with a null bfd pointer is an
890 else if (abfd
->my_archive
891 && !bfd_is_thin_archive (abfd
->my_archive
))
892 result
= fprintf (stream
, "%s(%s)",
893 abfd
->my_archive
->filename
,
896 result
= fprintf (stream
, "%s", abfd
->filename
);
899 PRINT_TYPE (void *, p
);
908 total_printed
+= result
;
911 return total_printed
;
914 /* First pass over FORMAT to gather ARGS. Returns number of args. */
917 _bfd_doprnt_scan (const char *format
, union _bfd_doprnt_args
*args
)
919 const char *ptr
= format
;
920 unsigned int arg_count
= 0;
926 ptr
= strchr (ptr
, '%');
930 else if (ptr
[1] == '%')
934 int wide_width
= 0, short_width
= 0;
940 /* Check for a positional parameter. */
942 if (*ptr
!= '0' && ISDIGIT (*ptr
) && ptr
[1] == '$')
948 /* Move past flags. */
949 while (strchr ("-+ #0'I", *ptr
))
954 unsigned int arg_index
;
957 arg_index
= arg_count
;
958 if (*ptr
!= '0' && ISDIGIT (*ptr
) && ptr
[1] == '$')
960 arg_index
= *ptr
- '1';
965 args
[arg_index
].type
= Int
;
969 /* Handle explicit numeric value. */
970 while (ISDIGIT (*ptr
))
979 unsigned int arg_index
;
982 arg_index
= arg_count
;
983 if (*ptr
!= '0' && ISDIGIT (*ptr
) && ptr
[1] == '$')
985 arg_index
= *ptr
- '1';
990 args
[arg_index
].type
= Int
;
994 /* Handle explicit numeric value. */
995 while (ISDIGIT (*ptr
))
998 while (strchr ("hlL", *ptr
))
1018 if ((int) arg_no
< 0)
1046 #if defined (__GNUC__) || defined (HAVE_LONG_LONG)
1047 arg_type
= LongLong
;
1062 if (wide_width
== 0)
1066 #if defined (__GNUC__) || defined (HAVE_LONG_DOUBLE)
1067 arg_type
= LongDouble
;
1078 if (*ptr
== 'A' || *ptr
== 'B')
1088 args
[arg_no
].type
= arg_type
;
1096 /* This is the default routine to handle BFD error messages.
1097 Like fprintf (stderr, ...), but also handles some extra format specifiers.
1099 %pA section name from section. For group components, prints group name too.
1100 %pB file name from bfd. For archive components, prints archive too.
1102 Beware: Only supports a maximum of 9 format arguments. */
1105 error_handler_internal (const char *fmt
, va_list ap
)
1107 unsigned int i
, arg_count
;
1108 union _bfd_doprnt_args args
[9];
1110 for (i
= 0; i
< sizeof (args
) / sizeof (args
[0]); i
++)
1113 arg_count
= _bfd_doprnt_scan (fmt
, args
);
1114 for (i
= 0; i
< arg_count
; i
++)
1116 switch (args
[i
].type
)
1119 args
[i
].i
= va_arg (ap
, int);
1122 args
[i
].l
= va_arg (ap
, long);
1125 args
[i
].ll
= va_arg (ap
, long long);
1128 args
[i
].d
= va_arg (ap
, double);
1131 args
[i
].ld
= va_arg (ap
, long double);
1134 args
[i
].p
= va_arg (ap
, void *);
1141 /* PR 4992: Don't interrupt output being sent to stdout. */
1144 if (_bfd_error_program_name
!= NULL
)
1145 fprintf (stderr
, "%s: ", _bfd_error_program_name
);
1147 fprintf (stderr
, "BFD: ");
1149 _bfd_doprnt (stderr
, fmt
, args
);
1151 /* On AIX, putc is implemented as a macro that triggers a -Wunused-value
1152 warning, so use the fputc function to avoid it. */
1153 fputc ('\n', stderr
);
1157 /* This is a function pointer to the routine which should handle BFD
1158 error messages. It is called when a BFD routine encounters an
1159 error for which it wants to print a message. Going through a
1160 function pointer permits a program linked against BFD to intercept
1161 the messages and deal with them itself. */
1163 static bfd_error_handler_type _bfd_error_internal
= error_handler_internal
;
1166 _bfd_error_handler (const char *fmt
, ...)
1171 _bfd_error_internal (fmt
, ap
);
1177 bfd_set_error_handler
1180 bfd_error_handler_type bfd_set_error_handler (bfd_error_handler_type);
1183 Set the BFD error handler function. Returns the previous
1187 bfd_error_handler_type
1188 bfd_set_error_handler (bfd_error_handler_type pnew
)
1190 bfd_error_handler_type pold
;
1192 pold
= _bfd_error_internal
;
1193 _bfd_error_internal
= pnew
;
1199 bfd_set_error_program_name
1202 void bfd_set_error_program_name (const char *);
1205 Set the program name to use when printing a BFD error. This
1206 is printed before the error message followed by a colon and
1207 space. The string must not be changed after it is passed to
1212 bfd_set_error_program_name (const char *name
)
1214 _bfd_error_program_name
= name
;
1221 If BFD finds an internal inconsistency, the bfd assert
1222 handler is called with information on the BFD version, BFD
1223 source file and line. If this happens, most programs linked
1224 against BFD are expected to want to exit with an error, or mark
1225 the current BFD operation as failed, so it is recommended to
1226 override the default handler, which just calls
1227 _bfd_error_handler and continues.
1231 .typedef void (*bfd_assert_handler_type) (const char *bfd_formatmsg,
1232 . const char *bfd_version,
1233 . const char *bfd_file,
1238 /* Note the use of bfd_ prefix on the parameter names above: we want to
1239 show which one is the message and which is the version by naming the
1240 parameters, but avoid polluting the program-using-bfd namespace as
1241 the typedef is visible in the exported headers that the program
1242 includes. Below, it's just for consistency. */
1245 _bfd_default_assert_handler (const char *bfd_formatmsg
,
1246 const char *bfd_version
,
1247 const char *bfd_file
,
1251 _bfd_error_handler (bfd_formatmsg
, bfd_version
, bfd_file
, bfd_line
);
1254 /* Similar to _bfd_error_handler, a program can decide to exit on an
1255 internal BFD error. We use a non-variadic type to simplify passing
1256 on parameters to other functions, e.g. _bfd_error_handler. */
1258 static bfd_assert_handler_type _bfd_assert_handler
= _bfd_default_assert_handler
;
1262 bfd_set_assert_handler
1265 bfd_assert_handler_type bfd_set_assert_handler (bfd_assert_handler_type);
1268 Set the BFD assert handler function. Returns the previous
1272 bfd_assert_handler_type
1273 bfd_set_assert_handler (bfd_assert_handler_type pnew
)
1275 bfd_assert_handler_type pold
;
1277 pold
= _bfd_assert_handler
;
1278 _bfd_assert_handler
= pnew
;
1284 Miscellaneous, Memory Usage, Error reporting, BFD front end
1290 Miscellaneous functions
1295 bfd_get_reloc_upper_bound
1298 long bfd_get_reloc_upper_bound (bfd *abfd, asection *sect);
1301 Return the number of bytes required to store the
1302 relocation information associated with section @var{sect}
1303 attached to bfd @var{abfd}. If an error occurs, return -1.
1308 bfd_get_reloc_upper_bound (bfd
*abfd
, sec_ptr asect
)
1310 if (abfd
->format
!= bfd_object
)
1312 bfd_set_error (bfd_error_invalid_operation
);
1316 return BFD_SEND (abfd
, _get_reloc_upper_bound
, (abfd
, asect
));
1321 bfd_canonicalize_reloc
1324 long bfd_canonicalize_reloc
1325 (bfd *abfd, asection *sec, arelent **loc, asymbol **syms);
1328 Call the back end associated with the open BFD
1329 @var{abfd} and translate the external form of the relocation
1330 information attached to @var{sec} into the internal canonical
1331 form. Place the table into memory at @var{loc}, which has
1332 been preallocated, usually by a call to
1333 <<bfd_get_reloc_upper_bound>>. Returns the number of relocs, or
1336 The @var{syms} table is also needed for horrible internal magic
1341 bfd_canonicalize_reloc (bfd
*abfd
,
1346 if (abfd
->format
!= bfd_object
)
1348 bfd_set_error (bfd_error_invalid_operation
);
1352 return BFD_SEND (abfd
, _bfd_canonicalize_reloc
,
1353 (abfd
, asect
, location
, symbols
));
1362 (bfd *abfd, asection *sec, arelent **rel, unsigned int count);
1365 Set the relocation pointer and count within
1366 section @var{sec} to the values @var{rel} and @var{count}.
1367 The argument @var{abfd} is ignored.
1369 .#define bfd_set_reloc(abfd, asect, location, count) \
1370 . BFD_SEND (abfd, _bfd_set_reloc, (abfd, asect, location, count))
1378 bfd_boolean bfd_set_file_flags (bfd *abfd, flagword flags);
1381 Set the flag word in the BFD @var{abfd} to the value @var{flags}.
1383 Possible errors are:
1384 o <<bfd_error_wrong_format>> - The target bfd was not of object format.
1385 o <<bfd_error_invalid_operation>> - The target bfd was open for reading.
1386 o <<bfd_error_invalid_operation>> -
1387 The flag word contained a bit which was not applicable to the
1388 type of file. E.g., an attempt was made to set the <<D_PAGED>> bit
1389 on a BFD format which does not support demand paging.
1394 bfd_set_file_flags (bfd
*abfd
, flagword flags
)
1396 if (abfd
->format
!= bfd_object
)
1398 bfd_set_error (bfd_error_wrong_format
);
1402 if (bfd_read_p (abfd
))
1404 bfd_set_error (bfd_error_invalid_operation
);
1408 bfd_get_file_flags (abfd
) = flags
;
1409 if ((flags
& bfd_applicable_file_flags (abfd
)) != flags
)
1411 bfd_set_error (bfd_error_invalid_operation
);
1419 bfd_assert (const char *file
, int line
)
1421 /* xgettext:c-format */
1422 (*_bfd_assert_handler
) (_("BFD %s assertion fail %s:%d"),
1423 BFD_VERSION_STRING
, file
, line
);
1426 /* A more or less friendly abort message. In libbfd.h abort is
1427 defined to call this function. */
1430 _bfd_abort (const char *file
, int line
, const char *fn
)
1434 /* xgettext:c-format */
1435 (_("BFD %s internal error, aborting at %s:%d in %s\n"),
1436 BFD_VERSION_STRING
, file
, line
, fn
);
1439 /* xgettext:c-format */
1440 (_("BFD %s internal error, aborting at %s:%d\n"),
1441 BFD_VERSION_STRING
, file
, line
);
1442 _bfd_error_handler (_("Please report this bug.\n"));
1443 _exit (EXIT_FAILURE
);
1451 int bfd_get_arch_size (bfd *abfd);
1454 Returns the normalized architecture address size, in bits, as
1455 determined by the object file's format. By normalized, we mean
1456 either 32 or 64. For ELF, this information is included in the
1457 header. Use bfd_arch_bits_per_address for number of bits in
1458 the architecture address.
1461 Returns the arch size in bits if known, <<-1>> otherwise.
1465 bfd_get_arch_size (bfd
*abfd
)
1467 if (abfd
->xvec
->flavour
== bfd_target_elf_flavour
)
1468 return get_elf_backend_data (abfd
)->s
->arch_size
;
1470 return bfd_arch_bits_per_address (abfd
) > 32 ? 64 : 32;
1475 bfd_get_sign_extend_vma
1478 int bfd_get_sign_extend_vma (bfd *abfd);
1481 Indicates if the target architecture "naturally" sign extends
1482 an address. Some architectures implicitly sign extend address
1483 values when they are converted to types larger than the size
1484 of an address. For instance, bfd_get_start_address() will
1485 return an address sign extended to fill a bfd_vma when this is
1489 Returns <<1>> if the target architecture is known to sign
1490 extend addresses, <<0>> if the target architecture is known to
1491 not sign extend addresses, and <<-1>> otherwise.
1495 bfd_get_sign_extend_vma (bfd
*abfd
)
1499 if (bfd_get_flavour (abfd
) == bfd_target_elf_flavour
)
1500 return get_elf_backend_data (abfd
)->sign_extend_vma
;
1502 name
= bfd_get_target (abfd
);
1504 /* Return a proper value for DJGPP & PE COFF.
1505 This function is required for DWARF2 support, but there is
1506 no place to store this information in the COFF back end.
1507 Should enough other COFF targets add support for DWARF2,
1508 a place will have to be found. Until then, this hack will do. */
1509 if (CONST_STRNEQ (name
, "coff-go32")
1510 || strcmp (name
, "pe-i386") == 0
1511 || strcmp (name
, "pei-i386") == 0
1512 || strcmp (name
, "pe-x86-64") == 0
1513 || strcmp (name
, "pei-x86-64") == 0
1514 || strcmp (name
, "pe-arm-wince-little") == 0
1515 || strcmp (name
, "pei-arm-wince-little") == 0
1516 || strcmp (name
, "aixcoff-rs6000") == 0
1517 || strcmp (name
, "aix5coff64-rs6000") == 0)
1520 if (CONST_STRNEQ (name
, "mach-o"))
1523 bfd_set_error (bfd_error_wrong_format
);
1529 bfd_set_start_address
1532 bfd_boolean bfd_set_start_address (bfd *abfd, bfd_vma vma);
1535 Make @var{vma} the entry point of output BFD @var{abfd}.
1538 Returns <<TRUE>> on success, <<FALSE>> otherwise.
1542 bfd_set_start_address (bfd
*abfd
, bfd_vma vma
)
1544 abfd
->start_address
= vma
;
1553 unsigned int bfd_get_gp_size (bfd *abfd);
1556 Return the maximum size of objects to be optimized using the GP
1557 register under MIPS ECOFF. This is typically set by the <<-G>>
1558 argument to the compiler, assembler or linker.
1562 bfd_get_gp_size (bfd
*abfd
)
1564 if (abfd
->format
== bfd_object
)
1566 if (abfd
->xvec
->flavour
== bfd_target_ecoff_flavour
)
1567 return ecoff_data (abfd
)->gp_size
;
1568 else if (abfd
->xvec
->flavour
== bfd_target_elf_flavour
)
1569 return elf_gp_size (abfd
);
1579 void bfd_set_gp_size (bfd *abfd, unsigned int i);
1582 Set the maximum size of objects to be optimized using the GP
1583 register under ECOFF or MIPS ELF. This is typically set by
1584 the <<-G>> argument to the compiler, assembler or linker.
1588 bfd_set_gp_size (bfd
*abfd
, unsigned int i
)
1590 /* Don't try to set GP size on an archive or core file! */
1591 if (abfd
->format
!= bfd_object
)
1594 if (abfd
->xvec
->flavour
== bfd_target_ecoff_flavour
)
1595 ecoff_data (abfd
)->gp_size
= i
;
1596 else if (abfd
->xvec
->flavour
== bfd_target_elf_flavour
)
1597 elf_gp_size (abfd
) = i
;
1600 /* Get the GP value. This is an internal function used by some of the
1601 relocation special_function routines on targets which support a GP
1605 _bfd_get_gp_value (bfd
*abfd
)
1609 if (abfd
->format
!= bfd_object
)
1612 if (abfd
->xvec
->flavour
== bfd_target_ecoff_flavour
)
1613 return ecoff_data (abfd
)->gp
;
1614 else if (abfd
->xvec
->flavour
== bfd_target_elf_flavour
)
1615 return elf_gp (abfd
);
1620 /* Set the GP value. */
1623 _bfd_set_gp_value (bfd
*abfd
, bfd_vma v
)
1627 if (abfd
->format
!= bfd_object
)
1630 if (abfd
->xvec
->flavour
== bfd_target_ecoff_flavour
)
1631 ecoff_data (abfd
)->gp
= v
;
1632 else if (abfd
->xvec
->flavour
== bfd_target_elf_flavour
)
1641 bfd_vma bfd_scan_vma (const char *string, const char **end, int base);
1644 Convert, like <<strtoul>>, a numerical expression
1645 @var{string} into a <<bfd_vma>> integer, and return that integer.
1646 (Though without as many bells and whistles as <<strtoul>>.)
1647 The expression is assumed to be unsigned (i.e., positive).
1648 If given a @var{base}, it is used as the base for conversion.
1649 A base of 0 causes the function to interpret the string
1650 in hex if a leading "0x" or "0X" is found, otherwise
1651 in octal if a leading zero is found, otherwise in decimal.
1653 If the value would overflow, the maximum <<bfd_vma>> value is
1658 bfd_scan_vma (const char *string
, const char **end
, int base
)
1662 unsigned int cutlim
;
1665 /* Let the host do it if possible. */
1666 if (sizeof (bfd_vma
) <= sizeof (unsigned long))
1667 return strtoul (string
, (char **) end
, base
);
1669 #if defined (HAVE_STRTOULL) && defined (HAVE_LONG_LONG)
1670 if (sizeof (bfd_vma
) <= sizeof (unsigned long long))
1671 return strtoull (string
, (char **) end
, base
);
1676 if (string
[0] == '0')
1678 if ((string
[1] == 'x') || (string
[1] == 'X'))
1685 if ((base
< 2) || (base
> 36))
1690 && (string
[1] == 'x' || string
[1] == 'X')
1691 && ISXDIGIT (string
[2]))
1696 cutoff
= (~ (bfd_vma
) 0) / (bfd_vma
) base
;
1697 cutlim
= (~ (bfd_vma
) 0) % (bfd_vma
) base
;
1705 if (ISDIGIT (digit
))
1706 digit
= digit
- '0';
1707 else if (ISALPHA (digit
))
1708 digit
= TOUPPER (digit
) - 'A' + 10;
1711 if (digit
>= (unsigned int) base
)
1713 if (value
> cutoff
|| (value
== cutoff
&& digit
> cutlim
))
1715 value
= value
* base
+ digit
;
1720 value
= ~ (bfd_vma
) 0;
1730 bfd_copy_private_header_data
1733 bfd_boolean bfd_copy_private_header_data (bfd *ibfd, bfd *obfd);
1736 Copy private BFD header information from the BFD @var{ibfd} to the
1737 the BFD @var{obfd}. This copies information that may require
1738 sections to exist, but does not require symbol tables. Return
1739 <<true>> on success, <<false>> on error.
1740 Possible error returns are:
1742 o <<bfd_error_no_memory>> -
1743 Not enough memory exists to create private data for @var{obfd}.
1745 .#define bfd_copy_private_header_data(ibfd, obfd) \
1746 . BFD_SEND (obfd, _bfd_copy_private_header_data, \
1753 bfd_copy_private_bfd_data
1756 bfd_boolean bfd_copy_private_bfd_data (bfd *ibfd, bfd *obfd);
1759 Copy private BFD information from the BFD @var{ibfd} to the
1760 the BFD @var{obfd}. Return <<TRUE>> on success, <<FALSE>> on error.
1761 Possible error returns are:
1763 o <<bfd_error_no_memory>> -
1764 Not enough memory exists to create private data for @var{obfd}.
1766 .#define bfd_copy_private_bfd_data(ibfd, obfd) \
1767 . BFD_SEND (obfd, _bfd_copy_private_bfd_data, \
1774 bfd_set_private_flags
1777 bfd_boolean bfd_set_private_flags (bfd *abfd, flagword flags);
1780 Set private BFD flag information in the BFD @var{abfd}.
1781 Return <<TRUE>> on success, <<FALSE>> on error. Possible error
1784 o <<bfd_error_no_memory>> -
1785 Not enough memory exists to create private data for @var{obfd}.
1787 .#define bfd_set_private_flags(abfd, flags) \
1788 . BFD_SEND (abfd, _bfd_set_private_flags, (abfd, flags))
1797 The following functions exist but have not yet been documented.
1799 .#define bfd_sizeof_headers(abfd, info) \
1800 . BFD_SEND (abfd, _bfd_sizeof_headers, (abfd, info))
1802 .#define bfd_find_nearest_line(abfd, sec, syms, off, file, func, line) \
1803 . BFD_SEND (abfd, _bfd_find_nearest_line, \
1804 . (abfd, syms, sec, off, file, func, line, NULL))
1806 .#define bfd_find_nearest_line_discriminator(abfd, sec, syms, off, file, func, \
1808 . BFD_SEND (abfd, _bfd_find_nearest_line, \
1809 . (abfd, syms, sec, off, file, func, line, disc))
1811 .#define bfd_find_line(abfd, syms, sym, file, line) \
1812 . BFD_SEND (abfd, _bfd_find_line, \
1813 . (abfd, syms, sym, file, line))
1815 .#define bfd_find_inliner_info(abfd, file, func, line) \
1816 . BFD_SEND (abfd, _bfd_find_inliner_info, \
1817 . (abfd, file, func, line))
1819 .#define bfd_debug_info_start(abfd) \
1820 . BFD_SEND (abfd, _bfd_debug_info_start, (abfd))
1822 .#define bfd_debug_info_end(abfd) \
1823 . BFD_SEND (abfd, _bfd_debug_info_end, (abfd))
1825 .#define bfd_debug_info_accumulate(abfd, section) \
1826 . BFD_SEND (abfd, _bfd_debug_info_accumulate, (abfd, section))
1828 .#define bfd_stat_arch_elt(abfd, stat) \
1829 . BFD_SEND (abfd, _bfd_stat_arch_elt,(abfd, stat))
1831 .#define bfd_update_armap_timestamp(abfd) \
1832 . BFD_SEND (abfd, _bfd_update_armap_timestamp, (abfd))
1834 .#define bfd_set_arch_mach(abfd, arch, mach)\
1835 . BFD_SEND ( abfd, _bfd_set_arch_mach, (abfd, arch, mach))
1837 .#define bfd_relax_section(abfd, section, link_info, again) \
1838 . BFD_SEND (abfd, _bfd_relax_section, (abfd, section, link_info, again))
1840 .#define bfd_gc_sections(abfd, link_info) \
1841 . BFD_SEND (abfd, _bfd_gc_sections, (abfd, link_info))
1843 .#define bfd_lookup_section_flags(link_info, flag_info, section) \
1844 . BFD_SEND (abfd, _bfd_lookup_section_flags, (link_info, flag_info, section))
1846 .#define bfd_merge_sections(abfd, link_info) \
1847 . BFD_SEND (abfd, _bfd_merge_sections, (abfd, link_info))
1849 .#define bfd_is_group_section(abfd, sec) \
1850 . BFD_SEND (abfd, _bfd_is_group_section, (abfd, sec))
1852 .#define bfd_discard_group(abfd, sec) \
1853 . BFD_SEND (abfd, _bfd_discard_group, (abfd, sec))
1855 .#define bfd_link_hash_table_create(abfd) \
1856 . BFD_SEND (abfd, _bfd_link_hash_table_create, (abfd))
1858 .#define bfd_link_add_symbols(abfd, info) \
1859 . BFD_SEND (abfd, _bfd_link_add_symbols, (abfd, info))
1861 .#define bfd_link_just_syms(abfd, sec, info) \
1862 . BFD_SEND (abfd, _bfd_link_just_syms, (sec, info))
1864 .#define bfd_final_link(abfd, info) \
1865 . BFD_SEND (abfd, _bfd_final_link, (abfd, info))
1867 .#define bfd_free_cached_info(abfd) \
1868 . BFD_SEND (abfd, _bfd_free_cached_info, (abfd))
1870 .#define bfd_get_dynamic_symtab_upper_bound(abfd) \
1871 . BFD_SEND (abfd, _bfd_get_dynamic_symtab_upper_bound, (abfd))
1873 .#define bfd_print_private_bfd_data(abfd, file)\
1874 . BFD_SEND (abfd, _bfd_print_private_bfd_data, (abfd, file))
1876 .#define bfd_canonicalize_dynamic_symtab(abfd, asymbols) \
1877 . BFD_SEND (abfd, _bfd_canonicalize_dynamic_symtab, (abfd, asymbols))
1879 .#define bfd_get_synthetic_symtab(abfd, count, syms, dyncount, dynsyms, ret) \
1880 . BFD_SEND (abfd, _bfd_get_synthetic_symtab, (abfd, count, syms, \
1881 . dyncount, dynsyms, ret))
1883 .#define bfd_get_dynamic_reloc_upper_bound(abfd) \
1884 . BFD_SEND (abfd, _bfd_get_dynamic_reloc_upper_bound, (abfd))
1886 .#define bfd_canonicalize_dynamic_reloc(abfd, arels, asyms) \
1887 . BFD_SEND (abfd, _bfd_canonicalize_dynamic_reloc, (abfd, arels, asyms))
1889 .extern bfd_byte *bfd_get_relocated_section_contents
1890 . (bfd *, struct bfd_link_info *, struct bfd_link_order *, bfd_byte *,
1891 . bfd_boolean, asymbol **);
1897 bfd_get_relocated_section_contents (bfd
*abfd
,
1898 struct bfd_link_info
*link_info
,
1899 struct bfd_link_order
*link_order
,
1901 bfd_boolean relocatable
,
1905 bfd_byte
*(*fn
) (bfd
*, struct bfd_link_info
*, struct bfd_link_order
*,
1906 bfd_byte
*, bfd_boolean
, asymbol
**);
1908 if (link_order
->type
== bfd_indirect_link_order
)
1910 abfd2
= link_order
->u
.indirect
.section
->owner
;
1917 fn
= abfd2
->xvec
->_bfd_get_relocated_section_contents
;
1919 return (*fn
) (abfd
, link_info
, link_order
, data
, relocatable
, symbols
);
1922 /* Record information about an ELF program header. */
1925 bfd_record_phdr (bfd
*abfd
,
1927 bfd_boolean flags_valid
,
1929 bfd_boolean at_valid
,
1931 bfd_boolean includes_filehdr
,
1932 bfd_boolean includes_phdrs
,
1936 struct elf_segment_map
*m
, **pm
;
1939 if (bfd_get_flavour (abfd
) != bfd_target_elf_flavour
)
1942 amt
= sizeof (struct elf_segment_map
);
1943 amt
+= ((bfd_size_type
) count
- 1) * sizeof (asection
*);
1944 m
= (struct elf_segment_map
*) bfd_zalloc (abfd
, amt
);
1951 m
->p_flags_valid
= flags_valid
;
1952 m
->p_paddr_valid
= at_valid
;
1953 m
->includes_filehdr
= includes_filehdr
;
1954 m
->includes_phdrs
= includes_phdrs
;
1957 memcpy (m
->sections
, secs
, count
* sizeof (asection
*));
1959 for (pm
= &elf_seg_map (abfd
); *pm
!= NULL
; pm
= &(*pm
)->next
)
1967 /* Return true iff this target is 32-bit. */
1972 if (bfd_get_flavour (abfd
) == bfd_target_elf_flavour
)
1974 const struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
1975 return bed
->s
->elfclass
== ELFCLASS32
;
1978 /* For non-ELF targets, use architecture information. */
1979 return bfd_arch_bits_per_address (abfd
) <= 32;
1983 /* bfd_sprintf_vma and bfd_fprintf_vma display an address in the
1984 target's address size. */
1987 bfd_sprintf_vma (bfd
*abfd ATTRIBUTE_UNUSED
, char *buf
, bfd_vma value
)
1992 sprintf (buf
, "%08lx", (unsigned long) value
& 0xffffffff);
1996 sprintf_vma (buf
, value
);
2000 bfd_fprintf_vma (bfd
*abfd ATTRIBUTE_UNUSED
, void *stream
, bfd_vma value
)
2005 fprintf ((FILE *) stream
, "%08lx", (unsigned long) value
& 0xffffffff);
2009 fprintf_vma ((FILE *) stream
, value
);
2017 bfd_boolean bfd_alt_mach_code (bfd *abfd, int alternative);
2021 When more than one machine code number is available for the
2022 same machine type, this function can be used to switch between
2023 the preferred one (alternative == 0) and any others. Currently,
2024 only ELF supports this feature, with up to two alternate
2029 bfd_alt_mach_code (bfd
*abfd
, int alternative
)
2031 if (bfd_get_flavour (abfd
) == bfd_target_elf_flavour
)
2035 switch (alternative
)
2038 code
= get_elf_backend_data (abfd
)->elf_machine_code
;
2042 code
= get_elf_backend_data (abfd
)->elf_machine_alt1
;
2048 code
= get_elf_backend_data (abfd
)->elf_machine_alt2
;
2057 elf_elfheader (abfd
)->e_machine
= code
;
2067 bfd_emul_get_maxpagesize
2070 bfd_vma bfd_emul_get_maxpagesize (const char *);
2073 Returns the maximum page size, in bytes, as determined by
2077 Returns the maximum page size in bytes for ELF, 0 otherwise.
2081 bfd_emul_get_maxpagesize (const char *emul
)
2083 const bfd_target
*target
;
2085 target
= bfd_find_target (emul
, NULL
);
2087 && target
->flavour
== bfd_target_elf_flavour
)
2088 return xvec_get_elf_backend_data (target
)->maxpagesize
;
2094 bfd_elf_set_pagesize (const bfd_target
*target
, bfd_vma size
,
2095 int offset
, const bfd_target
*orig_target
)
2097 if (target
->flavour
== bfd_target_elf_flavour
)
2099 const struct elf_backend_data
*bed
;
2101 bed
= xvec_get_elf_backend_data (target
);
2102 *((bfd_vma
*) ((char *) bed
+ offset
)) = size
;
2105 if (target
->alternative_target
2106 && target
->alternative_target
!= orig_target
)
2107 bfd_elf_set_pagesize (target
->alternative_target
, size
, offset
,
2113 bfd_emul_set_maxpagesize
2116 void bfd_emul_set_maxpagesize (const char *, bfd_vma);
2119 For ELF, set the maximum page size for the emulation. It is
2120 a no-op for other formats.
2125 bfd_emul_set_maxpagesize (const char *emul
, bfd_vma size
)
2127 const bfd_target
*target
;
2129 target
= bfd_find_target (emul
, NULL
);
2131 bfd_elf_set_pagesize (target
, size
,
2132 offsetof (struct elf_backend_data
,
2133 maxpagesize
), target
);
2138 bfd_emul_get_commonpagesize
2141 bfd_vma bfd_emul_get_commonpagesize (const char *);
2144 Returns the common page size, in bytes, as determined by
2148 Returns the common page size in bytes for ELF, 0 otherwise.
2152 bfd_emul_get_commonpagesize (const char *emul
)
2154 const bfd_target
*target
;
2156 target
= bfd_find_target (emul
, NULL
);
2158 && target
->flavour
== bfd_target_elf_flavour
)
2159 return xvec_get_elf_backend_data (target
)->commonpagesize
;
2166 bfd_emul_set_commonpagesize
2169 void bfd_emul_set_commonpagesize (const char *, bfd_vma);
2172 For ELF, set the common page size for the emulation. It is
2173 a no-op for other formats.
2178 bfd_emul_set_commonpagesize (const char *emul
, bfd_vma size
)
2180 const bfd_target
*target
;
2182 target
= bfd_find_target (emul
, NULL
);
2184 bfd_elf_set_pagesize (target
, size
,
2185 offsetof (struct elf_backend_data
,
2186 commonpagesize
), target
);
2194 char *bfd_demangle (bfd *, const char *, int);
2197 Wrapper around cplus_demangle. Strips leading underscores and
2198 other such chars that would otherwise confuse the demangler.
2199 If passed a g++ v3 ABI mangled name, returns a buffer allocated
2200 with malloc holding the demangled name. Returns NULL otherwise
2201 and on memory alloc failure.
2205 bfd_demangle (bfd
*abfd
, const char *name
, int options
)
2208 const char *pre
, *suf
;
2210 bfd_boolean skip_lead
;
2212 skip_lead
= (abfd
!= NULL
2214 && bfd_get_symbol_leading_char (abfd
) == *name
);
2218 /* This is a hack for better error reporting on XCOFF, PowerPC64-ELF
2219 or the MS PE format. These formats have a number of leading '.'s
2220 on at least some symbols, so we remove all dots to avoid
2221 confusing the demangler. */
2223 while (*name
== '.' || *name
== '$')
2225 pre_len
= name
- pre
;
2227 /* Strip off @plt and suchlike too. */
2229 suf
= strchr (name
, '@');
2232 alloc
= (char *) bfd_malloc (suf
- name
+ 1);
2235 memcpy (alloc
, name
, suf
- name
);
2236 alloc
[suf
- name
] = '\0';
2240 res
= cplus_demangle (name
, options
);
2249 size_t len
= strlen (pre
) + 1;
2250 alloc
= (char *) bfd_malloc (len
);
2253 memcpy (alloc
, pre
, len
);
2259 /* Put back any prefix or suffix. */
2260 if (pre_len
!= 0 || suf
!= NULL
)
2269 suf_len
= strlen (suf
) + 1;
2270 final
= (char *) bfd_malloc (pre_len
+ len
+ suf_len
);
2273 memcpy (final
, pre
, pre_len
);
2274 memcpy (final
+ pre_len
, res
, len
);
2275 memcpy (final
+ pre_len
+ len
, suf
, suf_len
);
2286 bfd_update_compression_header
2289 void bfd_update_compression_header
2290 (bfd *abfd, bfd_byte *contents, asection *sec);
2293 Set the compression header at CONTENTS of SEC in ABFD and update
2294 elf_section_flags for compression.
2298 bfd_update_compression_header (bfd
*abfd
, bfd_byte
*contents
,
2301 if ((abfd
->flags
& BFD_COMPRESS
) != 0)
2303 if (bfd_get_flavour (abfd
) == bfd_target_elf_flavour
)
2305 if ((abfd
->flags
& BFD_COMPRESS_GABI
) != 0)
2307 const struct elf_backend_data
*bed
2308 = get_elf_backend_data (abfd
);
2310 /* Set the SHF_COMPRESSED bit. */
2311 elf_section_flags (sec
) |= SHF_COMPRESSED
;
2313 if (bed
->s
->elfclass
== ELFCLASS32
)
2315 Elf32_External_Chdr
*echdr
2316 = (Elf32_External_Chdr
*) contents
;
2317 bfd_put_32 (abfd
, ELFCOMPRESS_ZLIB
, &echdr
->ch_type
);
2318 bfd_put_32 (abfd
, sec
->size
, &echdr
->ch_size
);
2319 bfd_put_32 (abfd
, 1 << sec
->alignment_power
,
2320 &echdr
->ch_addralign
);
2324 Elf64_External_Chdr
*echdr
2325 = (Elf64_External_Chdr
*) contents
;
2326 bfd_put_32 (abfd
, ELFCOMPRESS_ZLIB
, &echdr
->ch_type
);
2327 bfd_put_32 (abfd
, 0, &echdr
->ch_reserved
);
2328 bfd_put_64 (abfd
, sec
->size
, &echdr
->ch_size
);
2329 bfd_put_64 (abfd
, 1 << sec
->alignment_power
,
2330 &echdr
->ch_addralign
);
2335 /* Clear the SHF_COMPRESSED bit. */
2336 elf_section_flags (sec
) &= ~SHF_COMPRESSED
;
2338 /* Write the zlib header. It should be "ZLIB" followed by
2339 the uncompressed section size, 8 bytes in big-endian
2341 memcpy (contents
, "ZLIB", 4);
2342 bfd_putb64 (sec
->size
, contents
+ 4);
2352 bfd_check_compression_header
2355 bfd_boolean bfd_check_compression_header
2356 (bfd *abfd, bfd_byte *contents, asection *sec,
2357 bfd_size_type *uncompressed_size);
2360 Check the compression header at CONTENTS of SEC in ABFD and
2361 store the uncompressed size in UNCOMPRESSED_SIZE if the
2362 compression header is valid.
2365 Return TRUE if the compression header is valid.
2369 bfd_check_compression_header (bfd
*abfd
, bfd_byte
*contents
,
2371 bfd_size_type
*uncompressed_size
)
2373 if (bfd_get_flavour (abfd
) == bfd_target_elf_flavour
2374 && (elf_section_flags (sec
) & SHF_COMPRESSED
) != 0)
2376 Elf_Internal_Chdr chdr
;
2377 const struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
2378 if (bed
->s
->elfclass
== ELFCLASS32
)
2380 Elf32_External_Chdr
*echdr
= (Elf32_External_Chdr
*) contents
;
2381 chdr
.ch_type
= bfd_get_32 (abfd
, &echdr
->ch_type
);
2382 chdr
.ch_size
= bfd_get_32 (abfd
, &echdr
->ch_size
);
2383 chdr
.ch_addralign
= bfd_get_32 (abfd
, &echdr
->ch_addralign
);
2387 Elf64_External_Chdr
*echdr
= (Elf64_External_Chdr
*) contents
;
2388 chdr
.ch_type
= bfd_get_32 (abfd
, &echdr
->ch_type
);
2389 chdr
.ch_size
= bfd_get_64 (abfd
, &echdr
->ch_size
);
2390 chdr
.ch_addralign
= bfd_get_64 (abfd
, &echdr
->ch_addralign
);
2392 if (chdr
.ch_type
== ELFCOMPRESS_ZLIB
2393 && chdr
.ch_addralign
== 1U << sec
->alignment_power
)
2395 *uncompressed_size
= chdr
.ch_size
;
2405 bfd_get_compression_header_size
2408 int bfd_get_compression_header_size (bfd *abfd, asection *sec);
2411 Return the size of the compression header of SEC in ABFD.
2414 Return the size of the compression header in bytes.
2418 bfd_get_compression_header_size (bfd
*abfd
, asection
*sec
)
2420 if (bfd_get_flavour (abfd
) == bfd_target_elf_flavour
)
2424 if (!(abfd
->flags
& BFD_COMPRESS_GABI
))
2427 else if (!(elf_section_flags (sec
) & SHF_COMPRESSED
))
2430 if (get_elf_backend_data (abfd
)->s
->elfclass
== ELFCLASS32
)
2431 return sizeof (Elf32_External_Chdr
);
2433 return sizeof (Elf64_External_Chdr
);
2441 bfd_convert_section_size
2444 bfd_size_type bfd_convert_section_size
2445 (bfd *ibfd, asection *isec, bfd *obfd, bfd_size_type size);
2448 Convert the size @var{size} of the section @var{isec} in input
2449 BFD @var{ibfd} to the section size in output BFD @var{obfd}.
2453 bfd_convert_section_size (bfd
*ibfd
, sec_ptr isec
, bfd
*obfd
,
2456 bfd_size_type hdr_size
;
2458 /* Do nothing if input file will be decompressed. */
2459 if ((ibfd
->flags
& BFD_DECOMPRESS
))
2462 /* Do nothing if either input or output aren't ELF. */
2463 if (bfd_get_flavour (ibfd
) != bfd_target_elf_flavour
2464 || bfd_get_flavour (obfd
) != bfd_target_elf_flavour
)
2467 /* Do nothing if ELF classes of input and output are the same. */
2468 if (get_elf_backend_data (ibfd
)->s
->elfclass
2469 == get_elf_backend_data (obfd
)->s
->elfclass
)
2472 /* Do nothing if the input section isn't a SHF_COMPRESSED section. */
2473 hdr_size
= bfd_get_compression_header_size (ibfd
, isec
);
2477 /* Adjust the size of the output SHF_COMPRESSED section. */
2478 if (hdr_size
== sizeof (Elf32_External_Chdr
))
2479 return (size
- sizeof (Elf32_External_Chdr
)
2480 + sizeof (Elf64_External_Chdr
));
2482 return (size
- sizeof (Elf64_External_Chdr
)
2483 + sizeof (Elf32_External_Chdr
));
2488 bfd_convert_section_contents
2491 bfd_boolean bfd_convert_section_contents
2492 (bfd *ibfd, asection *isec, bfd *obfd,
2493 bfd_byte **ptr, bfd_size_type *ptr_size);
2496 Convert the contents, stored in @var{*ptr}, of the section
2497 @var{isec} in input BFD @var{ibfd} to output BFD @var{obfd}
2498 if needed. The original buffer pointed to by @var{*ptr} may
2499 be freed and @var{*ptr} is returned with memory malloc'd by this
2500 function, and the new size written to @var{ptr_size}.
2504 bfd_convert_section_contents (bfd
*ibfd
, sec_ptr isec
, bfd
*obfd
,
2505 bfd_byte
**ptr
, bfd_size_type
*ptr_size
)
2508 bfd_size_type ihdr_size
, ohdr_size
, size
;
2509 Elf_Internal_Chdr chdr
;
2510 bfd_boolean use_memmove
;
2512 /* Do nothing if input file will be decompressed. */
2513 if ((ibfd
->flags
& BFD_DECOMPRESS
))
2516 /* Do nothing if either input or output aren't ELF. */
2517 if (bfd_get_flavour (ibfd
) != bfd_target_elf_flavour
2518 || bfd_get_flavour (obfd
) != bfd_target_elf_flavour
)
2521 /* Do nothing if ELF classes of input and output are the same. */
2522 if (get_elf_backend_data (ibfd
)->s
->elfclass
2523 == get_elf_backend_data (obfd
)->s
->elfclass
)
2526 /* Do nothing if the input section isn't a SHF_COMPRESSED section. */
2527 ihdr_size
= bfd_get_compression_header_size (ibfd
, isec
);
2533 /* Convert the contents of the input SHF_COMPRESSED section to
2534 output. Get the input compression header and the size of the
2535 output compression header. */
2536 if (ihdr_size
== sizeof (Elf32_External_Chdr
))
2538 Elf32_External_Chdr
*echdr
= (Elf32_External_Chdr
*) contents
;
2539 chdr
.ch_type
= bfd_get_32 (ibfd
, &echdr
->ch_type
);
2540 chdr
.ch_size
= bfd_get_32 (ibfd
, &echdr
->ch_size
);
2541 chdr
.ch_addralign
= bfd_get_32 (ibfd
, &echdr
->ch_addralign
);
2543 ohdr_size
= sizeof (Elf64_External_Chdr
);
2545 use_memmove
= FALSE
;
2549 Elf64_External_Chdr
*echdr
= (Elf64_External_Chdr
*) contents
;
2550 chdr
.ch_type
= bfd_get_32 (ibfd
, &echdr
->ch_type
);
2551 chdr
.ch_size
= bfd_get_64 (ibfd
, &echdr
->ch_size
);
2552 chdr
.ch_addralign
= bfd_get_64 (ibfd
, &echdr
->ch_addralign
);
2554 ohdr_size
= sizeof (Elf32_External_Chdr
);
2558 size
= bfd_get_section_size (isec
) - ihdr_size
+ ohdr_size
;
2561 contents
= (bfd_byte
*) bfd_malloc (size
);
2562 if (contents
== NULL
)
2566 /* Write out the output compression header. */
2567 if (ohdr_size
== sizeof (Elf32_External_Chdr
))
2569 Elf32_External_Chdr
*echdr
= (Elf32_External_Chdr
*) contents
;
2570 bfd_put_32 (obfd
, ELFCOMPRESS_ZLIB
, &echdr
->ch_type
);
2571 bfd_put_32 (obfd
, chdr
.ch_size
, &echdr
->ch_size
);
2572 bfd_put_32 (obfd
, chdr
.ch_addralign
, &echdr
->ch_addralign
);
2576 Elf64_External_Chdr
*echdr
= (Elf64_External_Chdr
*) contents
;
2577 bfd_put_32 (obfd
, ELFCOMPRESS_ZLIB
, &echdr
->ch_type
);
2578 bfd_put_32 (obfd
, 0, &echdr
->ch_reserved
);
2579 bfd_put_64 (obfd
, chdr
.ch_size
, &echdr
->ch_size
);
2580 bfd_put_64 (obfd
, chdr
.ch_addralign
, &echdr
->ch_addralign
);
2583 /* Copy the compressed contents. */
2585 memmove (contents
+ ohdr_size
, *ptr
+ ihdr_size
, size
- ohdr_size
);
2588 memcpy (contents
+ ohdr_size
, *ptr
+ ihdr_size
, size
- ohdr_size
);