1 /* Generic BFD library interface and support routines.
2 Copyright (C) 1990-2017 Free Software Foundation, Inc.
3 Written by Cygnus Support.
5 This file is part of BFD, the Binary File Descriptor library.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
20 MA 02110-1301, USA. */
24 typedef bfd, Error reporting, BFD front end, BFD front end
29 A BFD has type <<bfd>>; objects of this type are the
30 cornerstone of any application using BFD. Using BFD
31 consists of making references though the BFD and to data in the BFD.
33 Here is the structure that defines the type <<bfd>>. It
34 contains the major data about the file and pointers
35 to the rest of the data.
43 . write_direction = 2,
47 .enum bfd_plugin_format
49 . bfd_plugin_unknown = 0,
62 . {* The filename the application opened the BFD with. *}
63 . const char *filename;
65 . {* A pointer to the target jump table. *}
66 . const struct bfd_target *xvec;
68 . {* The IOSTREAM, and corresponding IO vector that provide access
69 . to the file backing the BFD. *}
71 . const struct bfd_iovec *iovec;
73 . {* The caching routines use these to maintain a
74 . least-recently-used list of BFDs. *}
75 . struct bfd *lru_prev, *lru_next;
77 . {* When a file is closed by the caching routines, BFD retains
78 . state information on the file here... *}
81 . {* File modified time, if mtime_set is TRUE. *}
84 . {* A unique identifier of the BFD *}
87 . {* The format which belongs to the BFD. (object, core, etc.) *}
88 . ENUM_BITFIELD (bfd_format) format : 3;
90 . {* The direction with which the BFD was opened. *}
91 . ENUM_BITFIELD (bfd_direction) direction : 2;
93 . {* Format_specific flags. *}
94 . flagword flags : 20;
96 . {* Values that may appear in the flags field of a BFD. These also
97 . appear in the object_flags field of the bfd_target structure, where
98 . they indicate the set of flags used by that backend (not all flags
99 . are meaningful for all object file formats) (FIXME: at the moment,
100 . the object_flags values have mostly just been copied from backend
101 . to another, and are not necessarily correct). *}
103 .#define BFD_NO_FLAGS 0x00
105 . {* BFD contains relocation entries. *}
106 .#define HAS_RELOC 0x01
108 . {* BFD is directly executable. *}
111 . {* BFD has line number information (basically used for F_LNNO in a
113 .#define HAS_LINENO 0x04
115 . {* BFD has debugging information. *}
116 .#define HAS_DEBUG 0x08
118 . {* BFD has symbols. *}
119 .#define HAS_SYMS 0x10
121 . {* BFD has local symbols (basically used for F_LSYMS in a COFF
123 .#define HAS_LOCALS 0x20
125 . {* BFD is a dynamic object. *}
126 .#define DYNAMIC 0x40
128 . {* Text section is write protected (if D_PAGED is not set, this is
129 . like an a.out NMAGIC file) (the linker sets this by default, but
130 . clears it for -r or -N). *}
131 .#define WP_TEXT 0x80
133 . {* BFD is dynamically paged (this is like an a.out ZMAGIC file) (the
134 . linker sets this by default, but clears it for -r or -n or -N). *}
135 .#define D_PAGED 0x100
137 . {* BFD is relaxable (this means that bfd_relax_section may be able to
138 . do something) (sometimes bfd_relax_section can do something even if
139 . this is not set). *}
140 .#define BFD_IS_RELAXABLE 0x200
142 . {* This may be set before writing out a BFD to request using a
143 . traditional format. For example, this is used to request that when
144 . writing out an a.out object the symbols not be hashed to eliminate
146 .#define BFD_TRADITIONAL_FORMAT 0x400
148 . {* This flag indicates that the BFD contents are actually cached
149 . in memory. If this is set, iostream points to a bfd_in_memory
151 .#define BFD_IN_MEMORY 0x800
153 . {* This BFD has been created by the linker and doesn't correspond
154 . to any input file. *}
155 .#define BFD_LINKER_CREATED 0x1000
157 . {* This may be set before writing out a BFD to request that it
158 . be written using values for UIDs, GIDs, timestamps, etc. that
159 . will be consistent from run to run. *}
160 .#define BFD_DETERMINISTIC_OUTPUT 0x2000
162 . {* Compress sections in this BFD. *}
163 .#define BFD_COMPRESS 0x4000
165 . {* Decompress sections in this BFD. *}
166 .#define BFD_DECOMPRESS 0x8000
168 . {* BFD is a dummy, for plugins. *}
169 .#define BFD_PLUGIN 0x10000
171 . {* Compress sections in this BFD with SHF_COMPRESSED from gABI. *}
172 .#define BFD_COMPRESS_GABI 0x20000
174 . {* Convert ELF common symbol type to STT_COMMON or STT_OBJECT in this
176 .#define BFD_CONVERT_ELF_COMMON 0x40000
178 . {* Use the ELF STT_COMMON type in this BFD. *}
179 .#define BFD_USE_ELF_STT_COMMON 0x80000
181 . {* Flags bits to be saved in bfd_preserve_save. *}
182 .#define BFD_FLAGS_SAVED \
183 . (BFD_IN_MEMORY | BFD_COMPRESS | BFD_DECOMPRESS | BFD_LINKER_CREATED \
184 . | BFD_PLUGIN | BFD_COMPRESS_GABI | BFD_CONVERT_ELF_COMMON \
185 . | BFD_USE_ELF_STT_COMMON)
187 . {* Flags bits which are for BFD use only. *}
188 .#define BFD_FLAGS_FOR_BFD_USE_MASK \
189 . (BFD_IN_MEMORY | BFD_COMPRESS | BFD_DECOMPRESS | BFD_LINKER_CREATED \
190 . | BFD_PLUGIN | BFD_TRADITIONAL_FORMAT | BFD_DETERMINISTIC_OUTPUT \
191 . | BFD_COMPRESS_GABI | BFD_CONVERT_ELF_COMMON | BFD_USE_ELF_STT_COMMON)
193 . {* Is the file descriptor being cached? That is, can it be closed as
194 . needed, and re-opened when accessed later? *}
195 . unsigned int cacheable : 1;
197 . {* Marks whether there was a default target specified when the
198 . BFD was opened. This is used to select which matching algorithm
199 . to use to choose the back end. *}
200 . unsigned int target_defaulted : 1;
202 . {* ... and here: (``once'' means at least once). *}
203 . unsigned int opened_once : 1;
205 . {* Set if we have a locally maintained mtime value, rather than
206 . getting it from the file each time. *}
207 . unsigned int mtime_set : 1;
209 . {* Flag set if symbols from this BFD should not be exported. *}
210 . unsigned int no_export : 1;
212 . {* Remember when output has begun, to stop strange things
214 . unsigned int output_has_begun : 1;
216 . {* Have archive map. *}
217 . unsigned int has_armap : 1;
219 . {* Set if this is a thin archive. *}
220 . unsigned int is_thin_archive : 1;
222 . {* Set if only required symbols should be added in the link hash table for
223 . this object. Used by VMS linkers. *}
224 . unsigned int selective_search : 1;
226 . {* Set if this is the linker output BFD. *}
227 . unsigned int is_linker_output : 1;
229 . {* Set if this is the linker input BFD. *}
230 . unsigned int is_linker_input : 1;
232 . {* If this is an input for a compiler plug-in library. *}
233 . ENUM_BITFIELD (bfd_plugin_format) plugin_format : 2;
235 . {* Set if this is a plugin output file. *}
236 . unsigned int lto_output : 1;
238 . {* Set to dummy BFD created when claimed by a compiler plug-in
240 . bfd *plugin_dummy_bfd;
242 . {* Currently my_archive is tested before adding origin to
243 . anything. I believe that this can become always an add of
244 . origin, with origin set to 0 for non archive files. *}
247 . {* The origin in the archive of the proxy entry. This will
248 . normally be the same as origin, except for thin archives,
249 . when it will contain the current offset of the proxy in the
250 . thin archive rather than the offset of the bfd in its actual
252 . ufile_ptr proxy_origin;
254 . {* A hash table for section names. *}
255 . struct bfd_hash_table section_htab;
257 . {* Pointer to linked list of sections. *}
258 . struct bfd_section *sections;
260 . {* The last section on the section list. *}
261 . struct bfd_section *section_last;
263 . {* The number of sections. *}
264 . unsigned int section_count;
266 . {* A field used by _bfd_generic_link_add_archive_symbols. This will
267 . be used only for archive elements. *}
270 . {* Stuff only useful for object files:
271 . The start address. *}
272 . bfd_vma start_address;
274 . {* Symbol table for output BFD (with symcount entries).
275 . Also used by the linker to cache input BFD symbols. *}
276 . struct bfd_symbol **outsymbols;
278 . {* Used for input and output. *}
279 . unsigned int symcount;
281 . {* Used for slurped dynamic symbol tables. *}
282 . unsigned int dynsymcount;
284 . {* Pointer to structure which contains architecture information. *}
285 . const struct bfd_arch_info *arch_info;
287 . {* Stuff only useful for archives. *}
289 . struct bfd *my_archive; {* The containing archive BFD. *}
290 . struct bfd *archive_next; {* The next BFD in the archive. *}
291 . struct bfd *archive_head; {* The first BFD in the archive. *}
292 . struct bfd *nested_archives; {* List of nested archive in a flattened
296 . {* For input BFDs, a chain of BFDs involved in a link. *}
298 . {* For output BFD, the linker hash table. *}
299 . struct bfd_link_hash_table *hash;
302 . {* Used by the back end to hold private data. *}
305 . struct aout_data_struct *aout_data;
306 . struct artdata *aout_ar_data;
307 . struct _oasys_data *oasys_obj_data;
308 . struct _oasys_ar_data *oasys_ar_data;
309 . struct coff_tdata *coff_obj_data;
310 . struct pe_tdata *pe_obj_data;
311 . struct xcoff_tdata *xcoff_obj_data;
312 . struct ecoff_tdata *ecoff_obj_data;
313 . struct ieee_data_struct *ieee_data;
314 . struct ieee_ar_data_struct *ieee_ar_data;
315 . struct srec_data_struct *srec_data;
316 . struct verilog_data_struct *verilog_data;
317 . struct ihex_data_struct *ihex_data;
318 . struct tekhex_data_struct *tekhex_data;
319 . struct elf_obj_tdata *elf_obj_data;
320 . struct nlm_obj_tdata *nlm_obj_data;
321 . struct bout_data_struct *bout_data;
322 . struct mmo_data_struct *mmo_data;
323 . struct sun_core_struct *sun_core_data;
324 . struct sco5_core_struct *sco5_core_data;
325 . struct trad_core_struct *trad_core_data;
326 . struct som_data_struct *som_data;
327 . struct hpux_core_struct *hpux_core_data;
328 . struct hppabsd_core_struct *hppabsd_core_data;
329 . struct sgi_core_struct *sgi_core_data;
330 . struct lynx_core_struct *lynx_core_data;
331 . struct osf_core_struct *osf_core_data;
332 . struct cisco_core_struct *cisco_core_data;
333 . struct versados_data_struct *versados_data;
334 . struct netbsd_core_struct *netbsd_core_data;
335 . struct mach_o_data_struct *mach_o_data;
336 . struct mach_o_fat_data_struct *mach_o_fat_data;
337 . struct plugin_data_struct *plugin_data;
338 . struct bfd_pef_data_struct *pef_data;
339 . struct bfd_pef_xlib_data_struct *pef_xlib_data;
340 . struct bfd_sym_data_struct *sym_data;
345 . {* Used by the application to hold private data. *}
348 . {* Where all the allocated stuff under this BFD goes. This is a
349 . struct objalloc *, but we use void * to avoid requiring the inclusion
353 . {* For input BFDs, the build ID, if the object has one. *}
354 . const struct bfd_build_id *build_id;
357 .{* See note beside bfd_set_section_userdata. *}
358 .static inline bfd_boolean
359 .bfd_set_cacheable (bfd * abfd, bfd_boolean val)
361 . abfd->cacheable = val;
371 #include "libiberty.h"
372 #include "demangle.h"
373 #include "safe-ctype.h"
376 #include "coff/internal.h"
377 #include "coff/sym.h"
379 #include "libecoff.h"
384 #define EXIT_FAILURE 1
388 /* provide storage for subsystem, stack and heap data which may have been
389 passed in on the command line. Ld puts this data into a bfd_link_info
390 struct which ultimately gets passed in to the bfd. When it arrives, copy
391 it to the following struct so that the data will be available in coffcode.h
392 where it is needed. The typedef's used are defined in bfd.h */
396 Error reporting, Miscellaneous, typedef bfd, BFD front end
401 Most BFD functions return nonzero on success (check their
402 individual documentation for precise semantics). On an error,
403 they call <<bfd_set_error>> to set an error condition that callers
404 can check by calling <<bfd_get_error>>.
405 If that returns <<bfd_error_system_call>>, then check
408 The easiest way to report a BFD error to the user is to
412 Type <<bfd_error_type>>
414 The values returned by <<bfd_get_error>> are defined by the
415 enumerated type <<bfd_error_type>>.
419 .typedef enum bfd_error
421 . bfd_error_no_error = 0,
422 . bfd_error_system_call,
423 . bfd_error_invalid_target,
424 . bfd_error_wrong_format,
425 . bfd_error_wrong_object_format,
426 . bfd_error_invalid_operation,
427 . bfd_error_no_memory,
428 . bfd_error_no_symbols,
429 . bfd_error_no_armap,
430 . bfd_error_no_more_archived_files,
431 . bfd_error_malformed_archive,
432 . bfd_error_missing_dso,
433 . bfd_error_file_not_recognized,
434 . bfd_error_file_ambiguously_recognized,
435 . bfd_error_no_contents,
436 . bfd_error_nonrepresentable_section,
437 . bfd_error_no_debug_section,
438 . bfd_error_bad_value,
439 . bfd_error_file_truncated,
440 . bfd_error_file_too_big,
441 . bfd_error_on_input,
442 . bfd_error_invalid_error_code
448 static bfd_error_type bfd_error
= bfd_error_no_error
;
449 static bfd
*input_bfd
= NULL
;
450 static bfd_error_type input_error
= bfd_error_no_error
;
452 const char *const bfd_errmsgs
[] =
455 N_("System call error"),
456 N_("Invalid bfd target"),
457 N_("File in wrong format"),
458 N_("Archive object file in wrong format"),
459 N_("Invalid operation"),
460 N_("Memory exhausted"),
462 N_("Archive has no index; run ranlib to add one"),
463 N_("No more archived files"),
464 N_("Malformed archive"),
465 N_("DSO missing from command line"),
466 N_("File format not recognized"),
467 N_("File format is ambiguous"),
468 N_("Section has no contents"),
469 N_("Nonrepresentable section on output"),
470 N_("Symbol needs debug section which does not exist"),
472 N_("File truncated"),
474 N_("Error reading %s: %s"),
475 N_("#<Invalid error code>")
483 bfd_error_type bfd_get_error (void);
486 Return the current BFD error condition.
500 void bfd_set_error (bfd_error_type error_tag);
503 Set the BFD error condition to be @var{error_tag}.
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 /* This macro and _doprnt taken from libiberty _doprnt.c, tidied a
630 little and extended to handle '%A' and '%B'. 'L' as a modifer for
631 integer formats is used for bfd_vma and bfd_size_type args, which
632 vary in size depending on BFD configuration. */
634 #define PRINT_TYPE(TYPE) \
637 TYPE value = va_arg (ap, TYPE); \
638 result = fprintf (stream, specifier, value); \
642 _doprnt (FILE *stream
, const char *format
, va_list ap
)
644 const char *ptr
= format
;
646 int total_printed
= 0;
654 /* While we have regular characters, print them. */
655 char *end
= strchr (ptr
, '%');
657 result
= fprintf (stream
, "%.*s", (int) (end
- ptr
), ptr
);
659 result
= fprintf (stream
, "%s", ptr
);
664 /* We have a format specifier! */
665 char *sptr
= specifier
;
666 int wide_width
= 0, short_width
= 0;
668 /* Copy the % and move forward. */
671 /* Move past flags. */
672 while (strchr ("-+ #0", *ptr
))
677 int value
= abs (va_arg (ap
, int));
678 sptr
+= sprintf (sptr
, "%d", value
);
682 /* Handle explicit numeric value. */
683 while (ISDIGIT (*ptr
))
688 /* Copy and go past the period. */
692 int value
= abs (va_arg (ap
, int));
693 sptr
+= sprintf (sptr
, "%d", value
);
697 /* Handle explicit numeric value. */
698 while (ISDIGIT (*ptr
))
701 while (strchr ("hlL", *ptr
))
720 /* Copy the type specifier, and NULL terminate. */
734 /* Short values are promoted to int, so just copy it
735 as an int and trust the C library printf to cast it
736 to the right width. */
741 /* L modifier for bfd_vma or bfd_size_type may be
742 either long long or long. */
746 if (BFD_ARCH_SIZE
< 64 || BFD_HOST_64BIT_LONG
)
766 #if defined (__MSVCRT__)
773 #if defined (__GNUC__) || defined (HAVE_LONG_LONG)
774 PRINT_TYPE (long long);
776 /* Fake it and hope for the best. */
794 #if defined (__GNUC__) || defined (HAVE_LONG_DOUBLE)
795 PRINT_TYPE (long double);
797 /* Fake it and hope for the best. */
815 asection
*sec
= va_arg (ap
, asection
*);
817 const char *group
= NULL
;
818 struct coff_comdat_info
*ci
;
821 /* Invoking %A with a null section pointer is an
826 && bfd_get_flavour (abfd
) == bfd_target_elf_flavour
827 && elf_next_in_group (sec
) != NULL
828 && (sec
->flags
& SEC_GROUP
) == 0)
829 group
= elf_group_name (sec
);
830 else if (abfd
!= NULL
831 && bfd_get_flavour (abfd
) == bfd_target_coff_flavour
832 && (ci
= bfd_coff_get_comdat_section (sec
->owner
,
836 result
= fprintf (stream
, "%s[%s]", sec
->name
, group
);
838 result
= fprintf (stream
, "%s", sec
->name
);
843 bfd
*abfd
= va_arg (ap
, bfd
*);
846 /* Invoking %B with a null bfd pointer is an
849 else if (abfd
->my_archive
850 && !bfd_is_thin_archive (abfd
->my_archive
))
851 result
= fprintf (stream
, "%s(%s)",
852 abfd
->my_archive
->filename
, abfd
->filename
);
854 result
= fprintf (stream
, "%s", abfd
->filename
);
863 total_printed
+= result
;
866 return total_printed
;
869 /* This is the default routine to handle BFD error messages.
870 Like fprintf (stderr, ...), but also handles some extra format specifiers.
872 %A section name from section. For group components, print group name too.
873 %B file name from bfd. For archive components, prints archive too. */
876 error_handler_internal (const char *fmt
, va_list ap
)
878 /* PR 4992: Don't interrupt output being sent to stdout. */
881 if (_bfd_error_program_name
!= NULL
)
882 fprintf (stderr
, "%s: ", _bfd_error_program_name
);
884 fprintf (stderr
, "BFD: ");
886 _doprnt (stderr
, fmt
, ap
);
888 /* On AIX, putc is implemented as a macro that triggers a -Wunused-value
889 warning, so use the fputc function to avoid it. */
890 fputc ('\n', stderr
);
894 /* This is a function pointer to the routine which should handle BFD
895 error messages. It is called when a BFD routine encounters an
896 error for which it wants to print a message. Going through a
897 function pointer permits a program linked against BFD to intercept
898 the messages and deal with them itself. */
900 static bfd_error_handler_type _bfd_error_internal
= error_handler_internal
;
903 _bfd_error_handler (const char *fmt
, ...)
908 _bfd_error_internal (fmt
, ap
);
914 bfd_set_error_handler
917 bfd_error_handler_type bfd_set_error_handler (bfd_error_handler_type);
920 Set the BFD error handler function. Returns the previous
924 bfd_error_handler_type
925 bfd_set_error_handler (bfd_error_handler_type pnew
)
927 bfd_error_handler_type pold
;
929 pold
= _bfd_error_internal
;
930 _bfd_error_internal
= pnew
;
936 bfd_set_error_program_name
939 void bfd_set_error_program_name (const char *);
942 Set the program name to use when printing a BFD error. This
943 is printed before the error message followed by a colon and
944 space. The string must not be changed after it is passed to
949 bfd_set_error_program_name (const char *name
)
951 _bfd_error_program_name
= name
;
958 If BFD finds an internal inconsistency, the bfd assert
959 handler is called with information on the BFD version, BFD
960 source file and line. If this happens, most programs linked
961 against BFD are expected to want to exit with an error, or mark
962 the current BFD operation as failed, so it is recommended to
963 override the default handler, which just calls
964 _bfd_error_handler and continues.
968 .typedef void (*bfd_assert_handler_type) (const char *bfd_formatmsg,
969 . const char *bfd_version,
970 . const char *bfd_file,
975 /* Note the use of bfd_ prefix on the parameter names above: we want to
976 show which one is the message and which is the version by naming the
977 parameters, but avoid polluting the program-using-bfd namespace as
978 the typedef is visible in the exported headers that the program
979 includes. Below, it's just for consistency. */
982 _bfd_default_assert_handler (const char *bfd_formatmsg
,
983 const char *bfd_version
,
984 const char *bfd_file
,
988 _bfd_error_handler (bfd_formatmsg
, bfd_version
, bfd_file
, bfd_line
);
991 /* Similar to _bfd_error_handler, a program can decide to exit on an
992 internal BFD error. We use a non-variadic type to simplify passing
993 on parameters to other functions, e.g. _bfd_error_handler. */
995 static bfd_assert_handler_type _bfd_assert_handler
= _bfd_default_assert_handler
;
999 bfd_set_assert_handler
1002 bfd_assert_handler_type bfd_set_assert_handler (bfd_assert_handler_type);
1005 Set the BFD assert handler function. Returns the previous
1009 bfd_assert_handler_type
1010 bfd_set_assert_handler (bfd_assert_handler_type pnew
)
1012 bfd_assert_handler_type pold
;
1014 pold
= _bfd_assert_handler
;
1015 _bfd_assert_handler
= pnew
;
1021 Miscellaneous, Memory Usage, Error reporting, BFD front end
1027 Miscellaneous functions
1032 bfd_get_reloc_upper_bound
1035 long bfd_get_reloc_upper_bound (bfd *abfd, asection *sect);
1038 Return the number of bytes required to store the
1039 relocation information associated with section @var{sect}
1040 attached to bfd @var{abfd}. If an error occurs, return -1.
1045 bfd_get_reloc_upper_bound (bfd
*abfd
, sec_ptr asect
)
1047 if (abfd
->format
!= bfd_object
)
1049 bfd_set_error (bfd_error_invalid_operation
);
1053 return BFD_SEND (abfd
, _get_reloc_upper_bound
, (abfd
, asect
));
1058 bfd_canonicalize_reloc
1061 long bfd_canonicalize_reloc
1062 (bfd *abfd, asection *sec, arelent **loc, asymbol **syms);
1065 Call the back end associated with the open BFD
1066 @var{abfd} and translate the external form of the relocation
1067 information attached to @var{sec} into the internal canonical
1068 form. Place the table into memory at @var{loc}, which has
1069 been preallocated, usually by a call to
1070 <<bfd_get_reloc_upper_bound>>. Returns the number of relocs, or
1073 The @var{syms} table is also needed for horrible internal magic
1078 bfd_canonicalize_reloc (bfd
*abfd
,
1083 if (abfd
->format
!= bfd_object
)
1085 bfd_set_error (bfd_error_invalid_operation
);
1089 return BFD_SEND (abfd
, _bfd_canonicalize_reloc
,
1090 (abfd
, asect
, location
, symbols
));
1099 (bfd *abfd, asection *sec, arelent **rel, unsigned int count);
1102 Set the relocation pointer and count within
1103 section @var{sec} to the values @var{rel} and @var{count}.
1104 The argument @var{abfd} is ignored.
1106 .#define bfd_set_reloc(abfd, asect, location, count) \
1107 . BFD_SEND (abfd, _bfd_set_reloc, (abfd, asect, location, count))
1115 bfd_boolean bfd_set_file_flags (bfd *abfd, flagword flags);
1118 Set the flag word in the BFD @var{abfd} to the value @var{flags}.
1120 Possible errors are:
1121 o <<bfd_error_wrong_format>> - The target bfd was not of object format.
1122 o <<bfd_error_invalid_operation>> - The target bfd was open for reading.
1123 o <<bfd_error_invalid_operation>> -
1124 The flag word contained a bit which was not applicable to the
1125 type of file. E.g., an attempt was made to set the <<D_PAGED>> bit
1126 on a BFD format which does not support demand paging.
1131 bfd_set_file_flags (bfd
*abfd
, flagword flags
)
1133 if (abfd
->format
!= bfd_object
)
1135 bfd_set_error (bfd_error_wrong_format
);
1139 if (bfd_read_p (abfd
))
1141 bfd_set_error (bfd_error_invalid_operation
);
1145 bfd_get_file_flags (abfd
) = flags
;
1146 if ((flags
& bfd_applicable_file_flags (abfd
)) != flags
)
1148 bfd_set_error (bfd_error_invalid_operation
);
1156 bfd_assert (const char *file
, int line
)
1158 /* xgettext:c-format */
1159 (*_bfd_assert_handler
) (_("BFD %s assertion fail %s:%d"),
1160 BFD_VERSION_STRING
, file
, line
);
1163 /* A more or less friendly abort message. In libbfd.h abort is
1164 defined to call this function. */
1167 _bfd_abort (const char *file
, int line
, const char *fn
)
1171 /* xgettext:c-format */
1172 (_("BFD %s internal error, aborting at %s:%d in %s\n"),
1173 BFD_VERSION_STRING
, file
, line
, fn
);
1176 /* xgettext:c-format */
1177 (_("BFD %s internal error, aborting at %s:%d\n"),
1178 BFD_VERSION_STRING
, file
, line
);
1179 _bfd_error_handler (_("Please report this bug.\n"));
1180 _exit (EXIT_FAILURE
);
1188 int bfd_get_arch_size (bfd *abfd);
1191 Returns the normalized architecture address size, in bits, as
1192 determined by the object file's format. By normalized, we mean
1193 either 32 or 64. For ELF, this information is included in the
1194 header. Use bfd_arch_bits_per_address for number of bits in
1195 the architecture address.
1198 Returns the arch size in bits if known, <<-1>> otherwise.
1202 bfd_get_arch_size (bfd
*abfd
)
1204 if (abfd
->xvec
->flavour
== bfd_target_elf_flavour
)
1205 return get_elf_backend_data (abfd
)->s
->arch_size
;
1207 return bfd_arch_bits_per_address (abfd
) > 32 ? 64 : 32;
1212 bfd_get_sign_extend_vma
1215 int bfd_get_sign_extend_vma (bfd *abfd);
1218 Indicates if the target architecture "naturally" sign extends
1219 an address. Some architectures implicitly sign extend address
1220 values when they are converted to types larger than the size
1221 of an address. For instance, bfd_get_start_address() will
1222 return an address sign extended to fill a bfd_vma when this is
1226 Returns <<1>> if the target architecture is known to sign
1227 extend addresses, <<0>> if the target architecture is known to
1228 not sign extend addresses, and <<-1>> otherwise.
1232 bfd_get_sign_extend_vma (bfd
*abfd
)
1236 if (bfd_get_flavour (abfd
) == bfd_target_elf_flavour
)
1237 return get_elf_backend_data (abfd
)->sign_extend_vma
;
1239 name
= bfd_get_target (abfd
);
1241 /* Return a proper value for DJGPP & PE COFF.
1242 This function is required for DWARF2 support, but there is
1243 no place to store this information in the COFF back end.
1244 Should enough other COFF targets add support for DWARF2,
1245 a place will have to be found. Until then, this hack will do. */
1246 if (CONST_STRNEQ (name
, "coff-go32")
1247 || strcmp (name
, "pe-i386") == 0
1248 || strcmp (name
, "pei-i386") == 0
1249 || strcmp (name
, "pe-x86-64") == 0
1250 || strcmp (name
, "pei-x86-64") == 0
1251 || strcmp (name
, "pe-arm-wince-little") == 0
1252 || strcmp (name
, "pei-arm-wince-little") == 0
1253 || strcmp (name
, "aixcoff-rs6000") == 0)
1256 if (CONST_STRNEQ (name
, "mach-o"))
1259 bfd_set_error (bfd_error_wrong_format
);
1265 bfd_set_start_address
1268 bfd_boolean bfd_set_start_address (bfd *abfd, bfd_vma vma);
1271 Make @var{vma} the entry point of output BFD @var{abfd}.
1274 Returns <<TRUE>> on success, <<FALSE>> otherwise.
1278 bfd_set_start_address (bfd
*abfd
, bfd_vma vma
)
1280 abfd
->start_address
= vma
;
1289 unsigned int bfd_get_gp_size (bfd *abfd);
1292 Return the maximum size of objects to be optimized using the GP
1293 register under MIPS ECOFF. This is typically set by the <<-G>>
1294 argument to the compiler, assembler or linker.
1298 bfd_get_gp_size (bfd
*abfd
)
1300 if (abfd
->format
== bfd_object
)
1302 if (abfd
->xvec
->flavour
== bfd_target_ecoff_flavour
)
1303 return ecoff_data (abfd
)->gp_size
;
1304 else if (abfd
->xvec
->flavour
== bfd_target_elf_flavour
)
1305 return elf_gp_size (abfd
);
1315 void bfd_set_gp_size (bfd *abfd, unsigned int i);
1318 Set the maximum size of objects to be optimized using the GP
1319 register under ECOFF or MIPS ELF. This is typically set by
1320 the <<-G>> argument to the compiler, assembler or linker.
1324 bfd_set_gp_size (bfd
*abfd
, unsigned int i
)
1326 /* Don't try to set GP size on an archive or core file! */
1327 if (abfd
->format
!= bfd_object
)
1330 if (abfd
->xvec
->flavour
== bfd_target_ecoff_flavour
)
1331 ecoff_data (abfd
)->gp_size
= i
;
1332 else if (abfd
->xvec
->flavour
== bfd_target_elf_flavour
)
1333 elf_gp_size (abfd
) = i
;
1336 /* Get the GP value. This is an internal function used by some of the
1337 relocation special_function routines on targets which support a GP
1341 _bfd_get_gp_value (bfd
*abfd
)
1345 if (abfd
->format
!= bfd_object
)
1348 if (abfd
->xvec
->flavour
== bfd_target_ecoff_flavour
)
1349 return ecoff_data (abfd
)->gp
;
1350 else if (abfd
->xvec
->flavour
== bfd_target_elf_flavour
)
1351 return elf_gp (abfd
);
1356 /* Set the GP value. */
1359 _bfd_set_gp_value (bfd
*abfd
, bfd_vma v
)
1363 if (abfd
->format
!= bfd_object
)
1366 if (abfd
->xvec
->flavour
== bfd_target_ecoff_flavour
)
1367 ecoff_data (abfd
)->gp
= v
;
1368 else if (abfd
->xvec
->flavour
== bfd_target_elf_flavour
)
1377 bfd_vma bfd_scan_vma (const char *string, const char **end, int base);
1380 Convert, like <<strtoul>>, a numerical expression
1381 @var{string} into a <<bfd_vma>> integer, and return that integer.
1382 (Though without as many bells and whistles as <<strtoul>>.)
1383 The expression is assumed to be unsigned (i.e., positive).
1384 If given a @var{base}, it is used as the base for conversion.
1385 A base of 0 causes the function to interpret the string
1386 in hex if a leading "0x" or "0X" is found, otherwise
1387 in octal if a leading zero is found, otherwise in decimal.
1389 If the value would overflow, the maximum <<bfd_vma>> value is
1394 bfd_scan_vma (const char *string
, const char **end
, int base
)
1398 unsigned int cutlim
;
1401 /* Let the host do it if possible. */
1402 if (sizeof (bfd_vma
) <= sizeof (unsigned long))
1403 return strtoul (string
, (char **) end
, base
);
1405 #if defined (HAVE_STRTOULL) && defined (HAVE_LONG_LONG)
1406 if (sizeof (bfd_vma
) <= sizeof (unsigned long long))
1407 return strtoull (string
, (char **) end
, base
);
1412 if (string
[0] == '0')
1414 if ((string
[1] == 'x') || (string
[1] == 'X'))
1421 if ((base
< 2) || (base
> 36))
1426 && (string
[1] == 'x' || string
[1] == 'X')
1427 && ISXDIGIT (string
[2]))
1432 cutoff
= (~ (bfd_vma
) 0) / (bfd_vma
) base
;
1433 cutlim
= (~ (bfd_vma
) 0) % (bfd_vma
) base
;
1441 if (ISDIGIT (digit
))
1442 digit
= digit
- '0';
1443 else if (ISALPHA (digit
))
1444 digit
= TOUPPER (digit
) - 'A' + 10;
1447 if (digit
>= (unsigned int) base
)
1449 if (value
> cutoff
|| (value
== cutoff
&& digit
> cutlim
))
1451 value
= value
* base
+ digit
;
1456 value
= ~ (bfd_vma
) 0;
1466 bfd_copy_private_header_data
1469 bfd_boolean bfd_copy_private_header_data (bfd *ibfd, bfd *obfd);
1472 Copy private BFD header information from the BFD @var{ibfd} to the
1473 the BFD @var{obfd}. This copies information that may require
1474 sections to exist, but does not require symbol tables. Return
1475 <<true>> on success, <<false>> on error.
1476 Possible error returns are:
1478 o <<bfd_error_no_memory>> -
1479 Not enough memory exists to create private data for @var{obfd}.
1481 .#define bfd_copy_private_header_data(ibfd, obfd) \
1482 . BFD_SEND (obfd, _bfd_copy_private_header_data, \
1489 bfd_copy_private_bfd_data
1492 bfd_boolean bfd_copy_private_bfd_data (bfd *ibfd, bfd *obfd);
1495 Copy private BFD information from the BFD @var{ibfd} to the
1496 the BFD @var{obfd}. Return <<TRUE>> on success, <<FALSE>> on error.
1497 Possible error returns are:
1499 o <<bfd_error_no_memory>> -
1500 Not enough memory exists to create private data for @var{obfd}.
1502 .#define bfd_copy_private_bfd_data(ibfd, obfd) \
1503 . BFD_SEND (obfd, _bfd_copy_private_bfd_data, \
1510 bfd_set_private_flags
1513 bfd_boolean bfd_set_private_flags (bfd *abfd, flagword flags);
1516 Set private BFD flag information in the BFD @var{abfd}.
1517 Return <<TRUE>> on success, <<FALSE>> on error. Possible error
1520 o <<bfd_error_no_memory>> -
1521 Not enough memory exists to create private data for @var{obfd}.
1523 .#define bfd_set_private_flags(abfd, flags) \
1524 . BFD_SEND (abfd, _bfd_set_private_flags, (abfd, flags))
1533 The following functions exist but have not yet been documented.
1535 .#define bfd_sizeof_headers(abfd, info) \
1536 . BFD_SEND (abfd, _bfd_sizeof_headers, (abfd, info))
1538 .#define bfd_find_nearest_line(abfd, sec, syms, off, file, func, line) \
1539 . BFD_SEND (abfd, _bfd_find_nearest_line, \
1540 . (abfd, syms, sec, off, file, func, line, NULL))
1542 .#define bfd_find_nearest_line_discriminator(abfd, sec, syms, off, file, func, \
1544 . BFD_SEND (abfd, _bfd_find_nearest_line, \
1545 . (abfd, syms, sec, off, file, func, line, disc))
1547 .#define bfd_find_line(abfd, syms, sym, file, line) \
1548 . BFD_SEND (abfd, _bfd_find_line, \
1549 . (abfd, syms, sym, file, line))
1551 .#define bfd_find_inliner_info(abfd, file, func, line) \
1552 . BFD_SEND (abfd, _bfd_find_inliner_info, \
1553 . (abfd, file, func, line))
1555 .#define bfd_debug_info_start(abfd) \
1556 . BFD_SEND (abfd, _bfd_debug_info_start, (abfd))
1558 .#define bfd_debug_info_end(abfd) \
1559 . BFD_SEND (abfd, _bfd_debug_info_end, (abfd))
1561 .#define bfd_debug_info_accumulate(abfd, section) \
1562 . BFD_SEND (abfd, _bfd_debug_info_accumulate, (abfd, section))
1564 .#define bfd_stat_arch_elt(abfd, stat) \
1565 . BFD_SEND (abfd, _bfd_stat_arch_elt,(abfd, stat))
1567 .#define bfd_update_armap_timestamp(abfd) \
1568 . BFD_SEND (abfd, _bfd_update_armap_timestamp, (abfd))
1570 .#define bfd_set_arch_mach(abfd, arch, mach)\
1571 . BFD_SEND ( abfd, _bfd_set_arch_mach, (abfd, arch, mach))
1573 .#define bfd_relax_section(abfd, section, link_info, again) \
1574 . BFD_SEND (abfd, _bfd_relax_section, (abfd, section, link_info, again))
1576 .#define bfd_gc_sections(abfd, link_info) \
1577 . BFD_SEND (abfd, _bfd_gc_sections, (abfd, link_info))
1579 .#define bfd_lookup_section_flags(link_info, flag_info, section) \
1580 . BFD_SEND (abfd, _bfd_lookup_section_flags, (link_info, flag_info, section))
1582 .#define bfd_merge_sections(abfd, link_info) \
1583 . BFD_SEND (abfd, _bfd_merge_sections, (abfd, link_info))
1585 .#define bfd_is_group_section(abfd, sec) \
1586 . BFD_SEND (abfd, _bfd_is_group_section, (abfd, sec))
1588 .#define bfd_discard_group(abfd, sec) \
1589 . BFD_SEND (abfd, _bfd_discard_group, (abfd, sec))
1591 .#define bfd_link_hash_table_create(abfd) \
1592 . BFD_SEND (abfd, _bfd_link_hash_table_create, (abfd))
1594 .#define bfd_link_add_symbols(abfd, info) \
1595 . BFD_SEND (abfd, _bfd_link_add_symbols, (abfd, info))
1597 .#define bfd_link_just_syms(abfd, sec, info) \
1598 . BFD_SEND (abfd, _bfd_link_just_syms, (sec, info))
1600 .#define bfd_final_link(abfd, info) \
1601 . BFD_SEND (abfd, _bfd_final_link, (abfd, info))
1603 .#define bfd_free_cached_info(abfd) \
1604 . BFD_SEND (abfd, _bfd_free_cached_info, (abfd))
1606 .#define bfd_get_dynamic_symtab_upper_bound(abfd) \
1607 . BFD_SEND (abfd, _bfd_get_dynamic_symtab_upper_bound, (abfd))
1609 .#define bfd_print_private_bfd_data(abfd, file)\
1610 . BFD_SEND (abfd, _bfd_print_private_bfd_data, (abfd, file))
1612 .#define bfd_canonicalize_dynamic_symtab(abfd, asymbols) \
1613 . BFD_SEND (abfd, _bfd_canonicalize_dynamic_symtab, (abfd, asymbols))
1615 .#define bfd_get_synthetic_symtab(abfd, count, syms, dyncount, dynsyms, ret) \
1616 . BFD_SEND (abfd, _bfd_get_synthetic_symtab, (abfd, count, syms, \
1617 . dyncount, dynsyms, ret))
1619 .#define bfd_get_dynamic_reloc_upper_bound(abfd) \
1620 . BFD_SEND (abfd, _bfd_get_dynamic_reloc_upper_bound, (abfd))
1622 .#define bfd_canonicalize_dynamic_reloc(abfd, arels, asyms) \
1623 . BFD_SEND (abfd, _bfd_canonicalize_dynamic_reloc, (abfd, arels, asyms))
1625 .extern bfd_byte *bfd_get_relocated_section_contents
1626 . (bfd *, struct bfd_link_info *, struct bfd_link_order *, bfd_byte *,
1627 . bfd_boolean, asymbol **);
1633 bfd_get_relocated_section_contents (bfd
*abfd
,
1634 struct bfd_link_info
*link_info
,
1635 struct bfd_link_order
*link_order
,
1637 bfd_boolean relocatable
,
1641 bfd_byte
*(*fn
) (bfd
*, struct bfd_link_info
*, struct bfd_link_order
*,
1642 bfd_byte
*, bfd_boolean
, asymbol
**);
1644 if (link_order
->type
== bfd_indirect_link_order
)
1646 abfd2
= link_order
->u
.indirect
.section
->owner
;
1653 fn
= abfd2
->xvec
->_bfd_get_relocated_section_contents
;
1655 return (*fn
) (abfd
, link_info
, link_order
, data
, relocatable
, symbols
);
1658 /* Record information about an ELF program header. */
1661 bfd_record_phdr (bfd
*abfd
,
1663 bfd_boolean flags_valid
,
1665 bfd_boolean at_valid
,
1667 bfd_boolean includes_filehdr
,
1668 bfd_boolean includes_phdrs
,
1672 struct elf_segment_map
*m
, **pm
;
1675 if (bfd_get_flavour (abfd
) != bfd_target_elf_flavour
)
1678 amt
= sizeof (struct elf_segment_map
);
1679 amt
+= ((bfd_size_type
) count
- 1) * sizeof (asection
*);
1680 m
= (struct elf_segment_map
*) bfd_zalloc (abfd
, amt
);
1687 m
->p_flags_valid
= flags_valid
;
1688 m
->p_paddr_valid
= at_valid
;
1689 m
->includes_filehdr
= includes_filehdr
;
1690 m
->includes_phdrs
= includes_phdrs
;
1693 memcpy (m
->sections
, secs
, count
* sizeof (asection
*));
1695 for (pm
= &elf_seg_map (abfd
); *pm
!= NULL
; pm
= &(*pm
)->next
)
1703 /* Return true iff this target is 32-bit. */
1708 if (bfd_get_flavour (abfd
) == bfd_target_elf_flavour
)
1710 const struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
1711 return bed
->s
->elfclass
== ELFCLASS32
;
1714 /* For non-ELF targets, use architecture information. */
1715 return bfd_arch_bits_per_address (abfd
) <= 32;
1719 /* bfd_sprintf_vma and bfd_fprintf_vma display an address in the
1720 target's address size. */
1723 bfd_sprintf_vma (bfd
*abfd ATTRIBUTE_UNUSED
, char *buf
, bfd_vma value
)
1728 sprintf (buf
, "%08lx", (unsigned long) value
& 0xffffffff);
1732 sprintf_vma (buf
, value
);
1736 bfd_fprintf_vma (bfd
*abfd ATTRIBUTE_UNUSED
, void *stream
, bfd_vma value
)
1741 fprintf ((FILE *) stream
, "%08lx", (unsigned long) value
& 0xffffffff);
1745 fprintf_vma ((FILE *) stream
, value
);
1753 bfd_boolean bfd_alt_mach_code (bfd *abfd, int alternative);
1757 When more than one machine code number is available for the
1758 same machine type, this function can be used to switch between
1759 the preferred one (alternative == 0) and any others. Currently,
1760 only ELF supports this feature, with up to two alternate
1765 bfd_alt_mach_code (bfd
*abfd
, int alternative
)
1767 if (bfd_get_flavour (abfd
) == bfd_target_elf_flavour
)
1771 switch (alternative
)
1774 code
= get_elf_backend_data (abfd
)->elf_machine_code
;
1778 code
= get_elf_backend_data (abfd
)->elf_machine_alt1
;
1784 code
= get_elf_backend_data (abfd
)->elf_machine_alt2
;
1793 elf_elfheader (abfd
)->e_machine
= code
;
1803 bfd_emul_get_maxpagesize
1806 bfd_vma bfd_emul_get_maxpagesize (const char *);
1809 Returns the maximum page size, in bytes, as determined by
1813 Returns the maximum page size in bytes for ELF, 0 otherwise.
1817 bfd_emul_get_maxpagesize (const char *emul
)
1819 const bfd_target
*target
;
1821 target
= bfd_find_target (emul
, NULL
);
1823 && target
->flavour
== bfd_target_elf_flavour
)
1824 return xvec_get_elf_backend_data (target
)->maxpagesize
;
1830 bfd_elf_set_pagesize (const bfd_target
*target
, bfd_vma size
,
1831 int offset
, const bfd_target
*orig_target
)
1833 if (target
->flavour
== bfd_target_elf_flavour
)
1835 const struct elf_backend_data
*bed
;
1837 bed
= xvec_get_elf_backend_data (target
);
1838 *((bfd_vma
*) ((char *) bed
+ offset
)) = size
;
1841 if (target
->alternative_target
1842 && target
->alternative_target
!= orig_target
)
1843 bfd_elf_set_pagesize (target
->alternative_target
, size
, offset
,
1849 bfd_emul_set_maxpagesize
1852 void bfd_emul_set_maxpagesize (const char *, bfd_vma);
1855 For ELF, set the maximum page size for the emulation. It is
1856 a no-op for other formats.
1861 bfd_emul_set_maxpagesize (const char *emul
, bfd_vma size
)
1863 const bfd_target
*target
;
1865 target
= bfd_find_target (emul
, NULL
);
1867 bfd_elf_set_pagesize (target
, size
,
1868 offsetof (struct elf_backend_data
,
1869 maxpagesize
), target
);
1874 bfd_emul_get_commonpagesize
1877 bfd_vma bfd_emul_get_commonpagesize (const char *);
1880 Returns the common page size, in bytes, as determined by
1884 Returns the common page size in bytes for ELF, 0 otherwise.
1888 bfd_emul_get_commonpagesize (const char *emul
)
1890 const bfd_target
*target
;
1892 target
= bfd_find_target (emul
, NULL
);
1894 && target
->flavour
== bfd_target_elf_flavour
)
1895 return xvec_get_elf_backend_data (target
)->commonpagesize
;
1902 bfd_emul_set_commonpagesize
1905 void bfd_emul_set_commonpagesize (const char *, bfd_vma);
1908 For ELF, set the common page size for the emulation. It is
1909 a no-op for other formats.
1914 bfd_emul_set_commonpagesize (const char *emul
, bfd_vma size
)
1916 const bfd_target
*target
;
1918 target
= bfd_find_target (emul
, NULL
);
1920 bfd_elf_set_pagesize (target
, size
,
1921 offsetof (struct elf_backend_data
,
1922 commonpagesize
), target
);
1930 char *bfd_demangle (bfd *, const char *, int);
1933 Wrapper around cplus_demangle. Strips leading underscores and
1934 other such chars that would otherwise confuse the demangler.
1935 If passed a g++ v3 ABI mangled name, returns a buffer allocated
1936 with malloc holding the demangled name. Returns NULL otherwise
1937 and on memory alloc failure.
1941 bfd_demangle (bfd
*abfd
, const char *name
, int options
)
1944 const char *pre
, *suf
;
1946 bfd_boolean skip_lead
;
1948 skip_lead
= (abfd
!= NULL
1950 && bfd_get_symbol_leading_char (abfd
) == *name
);
1954 /* This is a hack for better error reporting on XCOFF, PowerPC64-ELF
1955 or the MS PE format. These formats have a number of leading '.'s
1956 on at least some symbols, so we remove all dots to avoid
1957 confusing the demangler. */
1959 while (*name
== '.' || *name
== '$')
1961 pre_len
= name
- pre
;
1963 /* Strip off @plt and suchlike too. */
1965 suf
= strchr (name
, '@');
1968 alloc
= (char *) bfd_malloc (suf
- name
+ 1);
1971 memcpy (alloc
, name
, suf
- name
);
1972 alloc
[suf
- name
] = '\0';
1976 res
= cplus_demangle (name
, options
);
1985 size_t len
= strlen (pre
) + 1;
1986 alloc
= (char *) bfd_malloc (len
);
1989 memcpy (alloc
, pre
, len
);
1995 /* Put back any prefix or suffix. */
1996 if (pre_len
!= 0 || suf
!= NULL
)
2005 suf_len
= strlen (suf
) + 1;
2006 final
= (char *) bfd_malloc (pre_len
+ len
+ suf_len
);
2009 memcpy (final
, pre
, pre_len
);
2010 memcpy (final
+ pre_len
, res
, len
);
2011 memcpy (final
+ pre_len
+ len
, suf
, suf_len
);
2022 bfd_update_compression_header
2025 void bfd_update_compression_header
2026 (bfd *abfd, bfd_byte *contents, asection *sec);
2029 Set the compression header at CONTENTS of SEC in ABFD and update
2030 elf_section_flags for compression.
2034 bfd_update_compression_header (bfd
*abfd
, bfd_byte
*contents
,
2037 if ((abfd
->flags
& BFD_COMPRESS
) != 0)
2039 if (bfd_get_flavour (abfd
) == bfd_target_elf_flavour
)
2041 if ((abfd
->flags
& BFD_COMPRESS_GABI
) != 0)
2043 const struct elf_backend_data
*bed
2044 = get_elf_backend_data (abfd
);
2046 /* Set the SHF_COMPRESSED bit. */
2047 elf_section_flags (sec
) |= SHF_COMPRESSED
;
2049 if (bed
->s
->elfclass
== ELFCLASS32
)
2051 Elf32_External_Chdr
*echdr
2052 = (Elf32_External_Chdr
*) contents
;
2053 bfd_put_32 (abfd
, ELFCOMPRESS_ZLIB
, &echdr
->ch_type
);
2054 bfd_put_32 (abfd
, sec
->size
, &echdr
->ch_size
);
2055 bfd_put_32 (abfd
, 1 << sec
->alignment_power
,
2056 &echdr
->ch_addralign
);
2060 Elf64_External_Chdr
*echdr
2061 = (Elf64_External_Chdr
*) contents
;
2062 bfd_put_32 (abfd
, ELFCOMPRESS_ZLIB
, &echdr
->ch_type
);
2063 bfd_put_32 (abfd
, 0, &echdr
->ch_reserved
);
2064 bfd_put_64 (abfd
, sec
->size
, &echdr
->ch_size
);
2065 bfd_put_64 (abfd
, 1 << sec
->alignment_power
,
2066 &echdr
->ch_addralign
);
2071 /* Clear the SHF_COMPRESSED bit. */
2072 elf_section_flags (sec
) &= ~SHF_COMPRESSED
;
2074 /* Write the zlib header. It should be "ZLIB" followed by
2075 the uncompressed section size, 8 bytes in big-endian
2077 memcpy (contents
, "ZLIB", 4);
2078 bfd_putb64 (sec
->size
, contents
+ 4);
2088 bfd_check_compression_header
2091 bfd_boolean bfd_check_compression_header
2092 (bfd *abfd, bfd_byte *contents, asection *sec,
2093 bfd_size_type *uncompressed_size);
2096 Check the compression header at CONTENTS of SEC in ABFD and
2097 store the uncompressed size in UNCOMPRESSED_SIZE if the
2098 compression header is valid.
2101 Return TRUE if the compression header is valid.
2105 bfd_check_compression_header (bfd
*abfd
, bfd_byte
*contents
,
2107 bfd_size_type
*uncompressed_size
)
2109 if (bfd_get_flavour (abfd
) == bfd_target_elf_flavour
2110 && (elf_section_flags (sec
) & SHF_COMPRESSED
) != 0)
2112 Elf_Internal_Chdr chdr
;
2113 const struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
2114 if (bed
->s
->elfclass
== ELFCLASS32
)
2116 Elf32_External_Chdr
*echdr
= (Elf32_External_Chdr
*) contents
;
2117 chdr
.ch_type
= bfd_get_32 (abfd
, &echdr
->ch_type
);
2118 chdr
.ch_size
= bfd_get_32 (abfd
, &echdr
->ch_size
);
2119 chdr
.ch_addralign
= bfd_get_32 (abfd
, &echdr
->ch_addralign
);
2123 Elf64_External_Chdr
*echdr
= (Elf64_External_Chdr
*) contents
;
2124 chdr
.ch_type
= bfd_get_32 (abfd
, &echdr
->ch_type
);
2125 chdr
.ch_size
= bfd_get_64 (abfd
, &echdr
->ch_size
);
2126 chdr
.ch_addralign
= bfd_get_64 (abfd
, &echdr
->ch_addralign
);
2128 if (chdr
.ch_type
== ELFCOMPRESS_ZLIB
2129 && chdr
.ch_addralign
== 1U << sec
->alignment_power
)
2131 *uncompressed_size
= chdr
.ch_size
;
2141 bfd_get_compression_header_size
2144 int bfd_get_compression_header_size (bfd *abfd, asection *sec);
2147 Return the size of the compression header of SEC in ABFD.
2150 Return the size of the compression header in bytes.
2154 bfd_get_compression_header_size (bfd
*abfd
, asection
*sec
)
2156 if (bfd_get_flavour (abfd
) == bfd_target_elf_flavour
)
2160 if (!(abfd
->flags
& BFD_COMPRESS_GABI
))
2163 else if (!(elf_section_flags (sec
) & SHF_COMPRESSED
))
2166 if (get_elf_backend_data (abfd
)->s
->elfclass
== ELFCLASS32
)
2167 return sizeof (Elf32_External_Chdr
);
2169 return sizeof (Elf64_External_Chdr
);
2177 bfd_convert_section_size
2180 bfd_size_type bfd_convert_section_size
2181 (bfd *ibfd, asection *isec, bfd *obfd, bfd_size_type size);
2184 Convert the size @var{size} of the section @var{isec} in input
2185 BFD @var{ibfd} to the section size in output BFD @var{obfd}.
2189 bfd_convert_section_size (bfd
*ibfd
, sec_ptr isec
, bfd
*obfd
,
2192 bfd_size_type hdr_size
;
2194 /* Do nothing if input file will be decompressed. */
2195 if ((ibfd
->flags
& BFD_DECOMPRESS
))
2198 /* Do nothing if either input or output aren't ELF. */
2199 if (bfd_get_flavour (ibfd
) != bfd_target_elf_flavour
2200 || bfd_get_flavour (obfd
) != bfd_target_elf_flavour
)
2203 /* Do nothing if ELF classes of input and output are the same. */
2204 if (get_elf_backend_data (ibfd
)->s
->elfclass
2205 == get_elf_backend_data (obfd
)->s
->elfclass
)
2208 /* Do nothing if the input section isn't a SHF_COMPRESSED section. */
2209 hdr_size
= bfd_get_compression_header_size (ibfd
, isec
);
2213 /* Adjust the size of the output SHF_COMPRESSED section. */
2214 if (hdr_size
== sizeof (Elf32_External_Chdr
))
2215 return (size
- sizeof (Elf32_External_Chdr
)
2216 + sizeof (Elf64_External_Chdr
));
2218 return (size
- sizeof (Elf64_External_Chdr
)
2219 + sizeof (Elf32_External_Chdr
));
2224 bfd_convert_section_contents
2227 bfd_boolean bfd_convert_section_contents
2228 (bfd *ibfd, asection *isec, bfd *obfd,
2229 bfd_byte **ptr, bfd_size_type *ptr_size);
2232 Convert the contents, stored in @var{*ptr}, of the section
2233 @var{isec} in input BFD @var{ibfd} to output BFD @var{obfd}
2234 if needed. The original buffer pointed to by @var{*ptr} may
2235 be freed and @var{*ptr} is returned with memory malloc'd by this
2236 function, and the new size written to @var{ptr_size}.
2240 bfd_convert_section_contents (bfd
*ibfd
, sec_ptr isec
, bfd
*obfd
,
2241 bfd_byte
**ptr
, bfd_size_type
*ptr_size
)
2244 bfd_size_type ihdr_size
, ohdr_size
, size
;
2245 Elf_Internal_Chdr chdr
;
2246 bfd_boolean use_memmove
;
2248 /* Do nothing if input file will be decompressed. */
2249 if ((ibfd
->flags
& BFD_DECOMPRESS
))
2252 /* Do nothing if either input or output aren't ELF. */
2253 if (bfd_get_flavour (ibfd
) != bfd_target_elf_flavour
2254 || bfd_get_flavour (obfd
) != bfd_target_elf_flavour
)
2257 /* Do nothing if ELF classes of input and output are the same. */
2258 if (get_elf_backend_data (ibfd
)->s
->elfclass
2259 == get_elf_backend_data (obfd
)->s
->elfclass
)
2262 /* Do nothing if the input section isn't a SHF_COMPRESSED section. */
2263 ihdr_size
= bfd_get_compression_header_size (ibfd
, isec
);
2269 /* Convert the contents of the input SHF_COMPRESSED section to
2270 output. Get the input compression header and the size of the
2271 output compression header. */
2272 if (ihdr_size
== sizeof (Elf32_External_Chdr
))
2274 Elf32_External_Chdr
*echdr
= (Elf32_External_Chdr
*) contents
;
2275 chdr
.ch_type
= bfd_get_32 (ibfd
, &echdr
->ch_type
);
2276 chdr
.ch_size
= bfd_get_32 (ibfd
, &echdr
->ch_size
);
2277 chdr
.ch_addralign
= bfd_get_32 (ibfd
, &echdr
->ch_addralign
);
2279 ohdr_size
= sizeof (Elf64_External_Chdr
);
2281 use_memmove
= FALSE
;
2285 Elf64_External_Chdr
*echdr
= (Elf64_External_Chdr
*) contents
;
2286 chdr
.ch_type
= bfd_get_32 (ibfd
, &echdr
->ch_type
);
2287 chdr
.ch_size
= bfd_get_64 (ibfd
, &echdr
->ch_size
);
2288 chdr
.ch_addralign
= bfd_get_64 (ibfd
, &echdr
->ch_addralign
);
2290 ohdr_size
= sizeof (Elf32_External_Chdr
);
2294 size
= bfd_get_section_size (isec
) - ihdr_size
+ ohdr_size
;
2297 contents
= (bfd_byte
*) bfd_malloc (size
);
2298 if (contents
== NULL
)
2302 /* Write out the output compression header. */
2303 if (ohdr_size
== sizeof (Elf32_External_Chdr
))
2305 Elf32_External_Chdr
*echdr
= (Elf32_External_Chdr
*) contents
;
2306 bfd_put_32 (obfd
, ELFCOMPRESS_ZLIB
, &echdr
->ch_type
);
2307 bfd_put_32 (obfd
, chdr
.ch_size
, &echdr
->ch_size
);
2308 bfd_put_32 (obfd
, chdr
.ch_addralign
, &echdr
->ch_addralign
);
2312 Elf64_External_Chdr
*echdr
= (Elf64_External_Chdr
*) contents
;
2313 bfd_put_32 (obfd
, ELFCOMPRESS_ZLIB
, &echdr
->ch_type
);
2314 bfd_put_32 (obfd
, 0, &echdr
->ch_reserved
);
2315 bfd_put_64 (obfd
, chdr
.ch_size
, &echdr
->ch_size
);
2316 bfd_put_64 (obfd
, chdr
.ch_addralign
, &echdr
->ch_addralign
);
2319 /* Copy the compressed contents. */
2321 memmove (contents
+ ohdr_size
, *ptr
+ ihdr_size
, size
- ohdr_size
);
2324 memcpy (contents
+ ohdr_size
, *ptr
+ ihdr_size
, size
- ohdr_size
);