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 mmo_data_struct *mmo_data;
322 . struct sun_core_struct *sun_core_data;
323 . struct sco5_core_struct *sco5_core_data;
324 . struct trad_core_struct *trad_core_data;
325 . struct som_data_struct *som_data;
326 . struct hpux_core_struct *hpux_core_data;
327 . struct hppabsd_core_struct *hppabsd_core_data;
328 . struct sgi_core_struct *sgi_core_data;
329 . struct lynx_core_struct *lynx_core_data;
330 . struct osf_core_struct *osf_core_data;
331 . struct cisco_core_struct *cisco_core_data;
332 . struct versados_data_struct *versados_data;
333 . struct netbsd_core_struct *netbsd_core_data;
334 . struct mach_o_data_struct *mach_o_data;
335 . struct mach_o_fat_data_struct *mach_o_fat_data;
336 . struct plugin_data_struct *plugin_data;
337 . struct bfd_pef_data_struct *pef_data;
338 . struct bfd_pef_xlib_data_struct *pef_xlib_data;
339 . struct bfd_sym_data_struct *sym_data;
344 . {* Used by the application to hold private data. *}
347 . {* Where all the allocated stuff under this BFD goes. This is a
348 . struct objalloc *, but we use void * to avoid requiring the inclusion
352 . {* For input BFDs, the build ID, if the object has one. *}
353 . const struct bfd_build_id *build_id;
356 .{* See note beside bfd_set_section_userdata. *}
357 .static inline bfd_boolean
358 .bfd_set_cacheable (bfd * abfd, bfd_boolean val)
360 . abfd->cacheable = val;
370 #include "libiberty.h"
371 #include "demangle.h"
372 #include "safe-ctype.h"
375 #include "coff/internal.h"
376 #include "coff/sym.h"
378 #include "libecoff.h"
383 #define EXIT_FAILURE 1
387 /* provide storage for subsystem, stack and heap data which may have been
388 passed in on the command line. Ld puts this data into a bfd_link_info
389 struct which ultimately gets passed in to the bfd. When it arrives, copy
390 it to the following struct so that the data will be available in coffcode.h
391 where it is needed. The typedef's used are defined in bfd.h */
395 Error reporting, Miscellaneous, typedef bfd, BFD front end
400 Most BFD functions return nonzero on success (check their
401 individual documentation for precise semantics). On an error,
402 they call <<bfd_set_error>> to set an error condition that callers
403 can check by calling <<bfd_get_error>>.
404 If that returns <<bfd_error_system_call>>, then check
407 The easiest way to report a BFD error to the user is to
411 Type <<bfd_error_type>>
413 The values returned by <<bfd_get_error>> are defined by the
414 enumerated type <<bfd_error_type>>.
418 .typedef enum bfd_error
420 . bfd_error_no_error = 0,
421 . bfd_error_system_call,
422 . bfd_error_invalid_target,
423 . bfd_error_wrong_format,
424 . bfd_error_wrong_object_format,
425 . bfd_error_invalid_operation,
426 . bfd_error_no_memory,
427 . bfd_error_no_symbols,
428 . bfd_error_no_armap,
429 . bfd_error_no_more_archived_files,
430 . bfd_error_malformed_archive,
431 . bfd_error_missing_dso,
432 . bfd_error_file_not_recognized,
433 . bfd_error_file_ambiguously_recognized,
434 . bfd_error_no_contents,
435 . bfd_error_nonrepresentable_section,
436 . bfd_error_no_debug_section,
437 . bfd_error_bad_value,
438 . bfd_error_file_truncated,
439 . bfd_error_file_too_big,
440 . bfd_error_on_input,
441 . bfd_error_invalid_error_code
447 static bfd_error_type bfd_error = bfd_error_no_error;
448 static bfd *input_bfd = NULL;
449 static bfd_error_type input_error = bfd_error_no_error;
451 const char *const bfd_errmsgs[] =
454 N_("system call error"),
455 N_("invalid bfd target"),
456 N_("file in wrong format"),
457 N_("archive object file in wrong format"),
458 N_("invalid operation"),
459 N_("memory exhausted"),
461 N_("archive has no index; run ranlib to add one"),
462 N_("no more archived files"),
463 N_("malformed archive"),
464 N_("DSO missing from command line"),
465 N_("file format not recognized"),
466 N_("file format is ambiguous"),
467 N_("section has no contents"),
468 N_("nonrepresentable section on output"),
469 N_("symbol needs debug section which does not exist"),
471 N_("file truncated"),
473 N_("error reading %s: %s"),
474 N_("#<invalid error code>")
482 bfd_error_type bfd_get_error (void);
485 Return the current BFD error condition.
499 void bfd_set_error (bfd_error_type error_tag);
502 Set the BFD error condition to be @var{error_tag}.
504 @var{error_tag} must not be bfd_error_on_input. Use
505 bfd_set_input_error for input errors instead.
509 bfd_set_error (bfd_error_type error_tag)
511 bfd_error = error_tag;
512 if (bfd_error >= bfd_error_on_input)
521 void bfd_set_input_error (bfd *input, bfd_error_type error_tag);
525 Set the BFD error condition to be bfd_error_on_input.
526 @var{input} is the input bfd where the error occurred, and
527 @var{error_tag} the bfd_error_type error.
531 bfd_set_input_error (bfd *input, bfd_error_type error_tag)
533 /* This is an error that occurred during bfd_close when writing an
534 archive, but on one of the input files. */
535 bfd_error = bfd_error_on_input;
537 input_error = error_tag;
538 if (input_error >= bfd_error_on_input)
547 const char *bfd_errmsg (bfd_error_type error_tag);
550 Return a string describing the error @var{error_tag}, or
551 the system error if @var{error_tag} is <<bfd_error_system_call>>.
555 bfd_errmsg (bfd_error_type error_tag)
560 if (error_tag == bfd_error_on_input)
563 const char *msg = bfd_errmsg (input_error);
565 if (asprintf (&buf, _(bfd_errmsgs [error_tag]), input_bfd->filename, msg)
569 /* Ick, what to do on out of memory? */
573 if (error_tag == bfd_error_system_call)
574 return xstrerror (errno);
576 if (error_tag > bfd_error_invalid_error_code)
577 error_tag = bfd_error_invalid_error_code; /* sanity check */
579 return _(bfd_errmsgs [error_tag]);
587 void bfd_perror (const char *message);
590 Print to the standard error stream a string describing the
591 last BFD error that occurred, or the last system error if
592 the last BFD error was a system call failure. If @var{message}
593 is non-NULL and non-empty, the error string printed is preceded
594 by @var{message}, a colon, and a space. It is followed by a newline.
598 bfd_perror (const char *message)
601 if (message == NULL || *message == '\0')
602 fprintf (stderr, "%s\n", bfd_errmsg (bfd_get_error ()));
604 fprintf (stderr, "%s: %s\n", message, bfd_errmsg (bfd_get_error ()));
612 Some BFD functions want to print messages describing the
613 problem. They call a BFD error handler function. This
614 function may be overridden by the program.
616 The BFD error handler acts like vprintf.
620 .typedef void (*bfd_error_handler_type) (const char *, va_list);
624 /* The program name used when printing BFD error messages. */
626 static const char *_bfd_error_program_name;
628 /* Support for positional parameters. */
630 union _bfd_doprnt_args
650 /* This macro and _bfd_doprnt taken from libiberty _doprnt.c, tidied a
651 little and extended to handle '%pA', '%pB' and positional parameters. */
653 #define PRINT_TYPE(TYPE, FIELD) \
656 TYPE value = (TYPE) args[arg_no].FIELD; \
657 result = fprintf (stream, specifier, value); \
661 _bfd_doprnt (FILE *stream, const char *format, union _bfd_doprnt_args *args)
663 const char *ptr = format;
665 int total_printed = 0;
666 unsigned int arg_count = 0;
674 /* While we have regular characters, print them. */
675 char *end = strchr (ptr, '%');
677 result = fprintf (stream, "%.*s", (int) (end - ptr), ptr);
679 result = fprintf (stream, "%s", ptr);
682 else if (ptr[1] == '%')
690 /* We have a format specifier! */
691 char *sptr = specifier;
692 int wide_width = 0, short_width = 0;
695 /* Copy the % and move forward. */
698 /* Check for a positional parameter. */
700 if (*ptr != '0' && ISDIGIT (*ptr) && ptr[1] == '$')
706 /* Move past flags. */
707 while (strchr ("-+ #0'I", *ptr))
713 unsigned int arg_index;
716 arg_index = arg_count;
717 if (*ptr != '0' && ISDIGIT (*ptr) && ptr[1] == '$')
719 arg_index = *ptr - '1';
722 value = abs (args[arg_index].i);
724 sptr += sprintf (sptr, "%d", value);
727 /* Handle explicit numeric value. */
728 while (ISDIGIT (*ptr))
734 /* Copy and go past the period. */
739 unsigned int arg_index;
742 arg_index = arg_count;
743 if (*ptr != '0' && ISDIGIT (*ptr) && ptr[1] == '$')
745 arg_index = *ptr - '1';
748 value = abs (args[arg_index].i);
750 sptr += sprintf (sptr, "%d", value);
753 /* Handle explicit numeric value. */
754 while (ISDIGIT (*ptr))
757 while (strchr ("hlL", *ptr))
776 /* Copy the type specifier, and NULL terminate. */
779 if ((int) arg_no < 0)
792 /* Short values are promoted to int, so just copy it
793 as an int and trust the C library printf to cast it
794 to the right width. */
805 PRINT_TYPE (long, l);
809 #if defined (__MSVCRT__)
816 #if defined (__GNUC__) || defined (HAVE_LONG_LONG)
817 PRINT_TYPE (long long, ll);
819 /* Fake it and hope for the best. */
820 PRINT_TYPE (long, l);
834 PRINT_TYPE (double, d);
837 #if defined (__GNUC__) || defined (HAVE_LONG_DOUBLE)
838 PRINT_TYPE (long double, ld);
840 /* Fake it and hope for the best. */
841 PRINT_TYPE (double, d);
847 PRINT_TYPE (char *, p);
854 const char *group = NULL;
855 struct coff_comdat_info *ci;
858 sec = (asection *) args[arg_no].p;
860 /* Invoking %pA with a null section pointer is an
865 && bfd_get_flavour (abfd) == bfd_target_elf_flavour
866 && elf_next_in_group (sec) != NULL
867 && (sec->flags & SEC_GROUP) == 0)
868 group = elf_group_name (sec);
869 else if (abfd != NULL
870 && bfd_get_flavour (abfd) == bfd_target_coff_flavour
871 && (ci = bfd_coff_get_comdat_section (sec->owner,
875 result = fprintf (stream, "%s[%s]", sec->name, group);
877 result = fprintf (stream, "%s", sec->name);
879 else if (*ptr == 'B')
884 abfd = (bfd *) args[arg_no].p;
886 /* Invoking %pB with a null bfd pointer is an
889 else if (abfd->my_archive
890 && !bfd_is_thin_archive (abfd->my_archive))
891 result = fprintf (stream, "%s(%s)",
892 abfd->my_archive->filename,
895 result = fprintf (stream, "%s", abfd->filename);
898 PRINT_TYPE (void *, p);
907 total_printed += result;
910 return total_printed;
913 /* First pass over FORMAT to gather ARGS. Returns number of args. */
916 _bfd_doprnt_scan (const char *format, union _bfd_doprnt_args *args)
918 const char *ptr = format;
919 unsigned int arg_count = 0;
925 ptr = strchr (ptr, '%');
929 else if (ptr[1] == '%')
933 int wide_width = 0, short_width = 0;
939 /* Check for a positional parameter. */
941 if (*ptr != '0' && ISDIGIT (*ptr) && ptr[1] == '$')
947 /* Move past flags. */
948 while (strchr ("-+ #0'I", *ptr))
953 unsigned int arg_index;
956 arg_index = arg_count;
957 if (*ptr != '0' && ISDIGIT (*ptr) && ptr[1] == '$')
959 arg_index = *ptr - '1';
964 args[arg_index].type = Int;
968 /* Handle explicit numeric value. */
969 while (ISDIGIT (*ptr))
978 unsigned int arg_index;
981 arg_index = arg_count;
982 if (*ptr != '0' && ISDIGIT (*ptr) && ptr[1] == '$')
984 arg_index = *ptr - '1';
989 args[arg_index].type = Int;
993 /* Handle explicit numeric value. */
994 while (ISDIGIT (*ptr))
997 while (strchr ("hlL", *ptr))
1017 if ((int) arg_no < 0)
1045 #if defined (__GNUC__) || defined (HAVE_LONG_LONG)
1046 arg_type = LongLong;
1061 if (wide_width == 0)
1065 #if defined (__GNUC__) || defined (HAVE_LONG_DOUBLE)
1066 arg_type = LongDouble;
1077 if (*ptr == 'A' || *ptr == 'B')
1087 args[arg_no].type = arg_type;
1095 /* This is the default routine to handle BFD error messages.
1096 Like fprintf (stderr, ...), but also handles some extra format specifiers.
1098 %pA section name from section. For group components, prints group name too.
1099 %pB file name from bfd. For archive components, prints archive too.
1101 Beware: Only supports a maximum of 9 format arguments. */
1104 error_handler_internal (const char *fmt, va_list ap)
1106 unsigned int i, arg_count;
1107 union _bfd_doprnt_args args[9];
1109 for (i = 0; i < sizeof (args) / sizeof (args[0]); i++)
1112 arg_count = _bfd_doprnt_scan (fmt, args);
1113 for (i = 0; i < arg_count; i++)
1115 switch (args[i].type)
1118 args[i].i = va_arg (ap, int);
1121 args[i].l = va_arg (ap, long);
1124 args[i].ll = va_arg (ap, long long);
1127 args[i].d = va_arg (ap, double);
1130 args[i].ld = va_arg (ap, long double);
1133 args[i].p = va_arg (ap, void *);
1140 /* PR 4992: Don't interrupt output being sent to stdout. */
1143 if (_bfd_error_program_name != NULL)
1144 fprintf (stderr, "%s: ", _bfd_error_program_name);
1146 fprintf (stderr, "BFD: ");
1148 _bfd_doprnt (stderr, fmt, args);
1150 /* On AIX, putc is implemented as a macro that triggers a -Wunused-value
1151 warning, so use the fputc function to avoid it. */
1152 fputc ('\n', stderr);
1156 /* This is a function pointer to the routine which should handle BFD
1157 error messages. It is called when a BFD routine encounters an
1158 error for which it wants to print a message. Going through a
1159 function pointer permits a program linked against BFD to intercept
1160 the messages and deal with them itself. */
1162 static bfd_error_handler_type _bfd_error_internal = error_handler_internal;
1165 _bfd_error_handler (const char *fmt, ...)
1170 _bfd_error_internal (fmt, ap);
1176 bfd_set_error_handler
1179 bfd_error_handler_type bfd_set_error_handler (bfd_error_handler_type);
1182 Set the BFD error handler function. Returns the previous
1186 bfd_error_handler_type
1187 bfd_set_error_handler (bfd_error_handler_type pnew)
1189 bfd_error_handler_type pold;
1191 pold = _bfd_error_internal;
1192 _bfd_error_internal = pnew;
1198 bfd_set_error_program_name
1201 void bfd_set_error_program_name (const char *);
1204 Set the program name to use when printing a BFD error. This
1205 is printed before the error message followed by a colon and
1206 space. The string must not be changed after it is passed to
1211 bfd_set_error_program_name (const char *name)
1213 _bfd_error_program_name = name;
1220 If BFD finds an internal inconsistency, the bfd assert
1221 handler is called with information on the BFD version, BFD
1222 source file and line. If this happens, most programs linked
1223 against BFD are expected to want to exit with an error, or mark
1224 the current BFD operation as failed, so it is recommended to
1225 override the default handler, which just calls
1226 _bfd_error_handler and continues.
1230 .typedef void (*bfd_assert_handler_type) (const char *bfd_formatmsg,
1231 . const char *bfd_version,
1232 . const char *bfd_file,
1237 /* Note the use of bfd_ prefix on the parameter names above: we want to
1238 show which one is the message and which is the version by naming the
1239 parameters, but avoid polluting the program-using-bfd namespace as
1240 the typedef is visible in the exported headers that the program
1241 includes. Below, it's just for consistency. */
1244 _bfd_default_assert_handler (const char *bfd_formatmsg,
1245 const char *bfd_version,
1246 const char *bfd_file,
1250 _bfd_error_handler (bfd_formatmsg, bfd_version, bfd_file, bfd_line);
1253 /* Similar to _bfd_error_handler, a program can decide to exit on an
1254 internal BFD error. We use a non-variadic type to simplify passing
1255 on parameters to other functions, e.g. _bfd_error_handler. */
1257 static bfd_assert_handler_type _bfd_assert_handler = _bfd_default_assert_handler;
1261 bfd_set_assert_handler
1264 bfd_assert_handler_type bfd_set_assert_handler (bfd_assert_handler_type);
1267 Set the BFD assert handler function. Returns the previous
1271 bfd_assert_handler_type
1272 bfd_set_assert_handler (bfd_assert_handler_type pnew)
1274 bfd_assert_handler_type pold;
1276 pold = _bfd_assert_handler;
1277 _bfd_assert_handler = pnew;
1283 Miscellaneous, Memory Usage, Error reporting, BFD front end
1289 Miscellaneous functions
1294 bfd_get_reloc_upper_bound
1297 long bfd_get_reloc_upper_bound (bfd *abfd, asection *sect);
1300 Return the number of bytes required to store the
1301 relocation information associated with section @var{sect}
1302 attached to bfd @var{abfd}. If an error occurs, return -1.
1307 bfd_get_reloc_upper_bound (bfd *abfd, sec_ptr asect)
1309 if (abfd->format != bfd_object)
1311 bfd_set_error (bfd_error_invalid_operation);
1315 return BFD_SEND (abfd, _get_reloc_upper_bound, (abfd, asect));
1320 bfd_canonicalize_reloc
1323 long bfd_canonicalize_reloc
1324 (bfd *abfd, asection *sec, arelent **loc, asymbol **syms);
1327 Call the back end associated with the open BFD
1328 @var{abfd} and translate the external form of the relocation
1329 information attached to @var{sec} into the internal canonical
1330 form. Place the table into memory at @var{loc}, which has
1331 been preallocated, usually by a call to
1332 <<bfd_get_reloc_upper_bound>>. Returns the number of relocs, or
1335 The @var{syms} table is also needed for horrible internal magic
1340 bfd_canonicalize_reloc (bfd *abfd,
1345 if (abfd->format != bfd_object)
1347 bfd_set_error (bfd_error_invalid_operation);
1351 return BFD_SEND (abfd, _bfd_canonicalize_reloc,
1352 (abfd, asect, location, symbols));
1361 (bfd *abfd, asection *sec, arelent **rel, unsigned int count);
1364 Set the relocation pointer and count within
1365 section @var{sec} to the values @var{rel} and @var{count}.
1366 The argument @var{abfd} is ignored.
1368 .#define bfd_set_reloc(abfd, asect, location, count) \
1369 . BFD_SEND (abfd, _bfd_set_reloc, (abfd, asect, location, count))
1377 bfd_boolean bfd_set_file_flags (bfd *abfd, flagword flags);
1380 Set the flag word in the BFD @var{abfd} to the value @var{flags}.
1382 Possible errors are:
1383 o <<bfd_error_wrong_format>> - The target bfd was not of object format.
1384 o <<bfd_error_invalid_operation>> - The target bfd was open for reading.
1385 o <<bfd_error_invalid_operation>> -
1386 The flag word contained a bit which was not applicable to the
1387 type of file. E.g., an attempt was made to set the <<D_PAGED>> bit
1388 on a BFD format which does not support demand paging.
1393 bfd_set_file_flags (bfd *abfd, flagword flags)
1395 if (abfd->format != bfd_object)
1397 bfd_set_error (bfd_error_wrong_format);
1401 if (bfd_read_p (abfd))
1403 bfd_set_error (bfd_error_invalid_operation);
1407 bfd_get_file_flags (abfd) = flags;
1408 if ((flags & bfd_applicable_file_flags (abfd)) != flags)
1410 bfd_set_error (bfd_error_invalid_operation);
1418 bfd_assert (const char *file, int line)
1420 /* xgettext:c-format */
1421 (*_bfd_assert_handler) (_("BFD %s assertion fail %s:%d"),
1422 BFD_VERSION_STRING, file, line);
1425 /* A more or less friendly abort message. In libbfd.h abort is
1426 defined to call this function. */
1429 _bfd_abort (const char *file, int line, const char *fn)
1433 /* xgettext:c-format */
1434 (_("BFD %s internal error, aborting at %s:%d in %s\n"),
1435 BFD_VERSION_STRING, file, line, fn);
1438 /* xgettext:c-format */
1439 (_("BFD %s internal error, aborting at %s:%d\n"),
1440 BFD_VERSION_STRING, file, line);
1441 _bfd_error_handler (_("Please report this bug.\n"));
1442 _exit (EXIT_FAILURE);
1450 int bfd_get_arch_size (bfd *abfd);
1453 Returns the normalized architecture address size, in bits, as
1454 determined by the object file's format. By normalized, we mean
1455 either 32 or 64. For ELF, this information is included in the
1456 header. Use bfd_arch_bits_per_address for number of bits in
1457 the architecture address.
1460 Returns the arch size in bits if known, <<-1>> otherwise.
1464 bfd_get_arch_size (bfd *abfd)
1466 if (abfd->xvec->flavour == bfd_target_elf_flavour)
1467 return get_elf_backend_data (abfd)->s->arch_size;
1469 return bfd_arch_bits_per_address (abfd) > 32 ? 64 : 32;
1474 bfd_get_sign_extend_vma
1477 int bfd_get_sign_extend_vma (bfd *abfd);
1480 Indicates if the target architecture "naturally" sign extends
1481 an address. Some architectures implicitly sign extend address
1482 values when they are converted to types larger than the size
1483 of an address. For instance, bfd_get_start_address() will
1484 return an address sign extended to fill a bfd_vma when this is
1488 Returns <<1>> if the target architecture is known to sign
1489 extend addresses, <<0>> if the target architecture is known to
1490 not sign extend addresses, and <<-1>> otherwise.
1494 bfd_get_sign_extend_vma (bfd *abfd)
1498 if (bfd_get_flavour (abfd) == bfd_target_elf_flavour)
1499 return get_elf_backend_data (abfd)->sign_extend_vma;
1501 name = bfd_get_target (abfd);
1503 /* Return a proper value for DJGPP & PE COFF.
1504 This function is required for DWARF2 support, but there is
1505 no place to store this information in the COFF back end.
1506 Should enough other COFF targets add support for DWARF2,
1507 a place will have to be found. Until then, this hack will do. */
1508 if (CONST_STRNEQ (name, "coff-go32")
1509 || strcmp (name, "pe-i386") == 0
1510 || strcmp (name, "pei-i386") == 0
1511 || strcmp (name, "pe-x86-64") == 0
1512 || strcmp (name, "pei-x86-64") == 0
1513 || strcmp (name, "pe-arm-wince-little") == 0
1514 || strcmp (name, "pei-arm-wince-little") == 0
1515 || strcmp (name, "aixcoff-rs6000") == 0
1516 || strcmp (name, "aix5coff64-rs6000") == 0)
1519 if (CONST_STRNEQ (name, "mach-o"))
1522 bfd_set_error (bfd_error_wrong_format);
1528 bfd_set_start_address
1531 bfd_boolean bfd_set_start_address (bfd *abfd, bfd_vma vma);
1534 Make @var{vma} the entry point of output BFD @var{abfd}.
1537 Returns <<TRUE>> on success, <<FALSE>> otherwise.
1541 bfd_set_start_address (bfd *abfd, bfd_vma vma)
1543 abfd->start_address = vma;
1552 unsigned int bfd_get_gp_size (bfd *abfd);
1555 Return the maximum size of objects to be optimized using the GP
1556 register under MIPS ECOFF. This is typically set by the <<-G>>
1557 argument to the compiler, assembler or linker.
1561 bfd_get_gp_size (bfd *abfd)
1563 if (abfd->format == bfd_object)
1565 if (abfd->xvec->flavour == bfd_target_ecoff_flavour)
1566 return ecoff_data (abfd)->gp_size;
1567 else if (abfd->xvec->flavour == bfd_target_elf_flavour)
1568 return elf_gp_size (abfd);
1578 void bfd_set_gp_size (bfd *abfd, unsigned int i);
1581 Set the maximum size of objects to be optimized using the GP
1582 register under ECOFF or MIPS ELF. This is typically set by
1583 the <<-G>> argument to the compiler, assembler or linker.
1587 bfd_set_gp_size (bfd *abfd, unsigned int i)
1589 /* Don't try to set GP size on an archive or core file! */
1590 if (abfd->format != bfd_object)
1593 if (abfd->xvec->flavour == bfd_target_ecoff_flavour)
1594 ecoff_data (abfd)->gp_size = i;
1595 else if (abfd->xvec->flavour == bfd_target_elf_flavour)
1596 elf_gp_size (abfd) = i;
1599 /* Get the GP value. This is an internal function used by some of the
1600 relocation special_function routines on targets which support a GP
1604 _bfd_get_gp_value (bfd *abfd)
1608 if (abfd->format != bfd_object)
1611 if (abfd->xvec->flavour == bfd_target_ecoff_flavour)
1612 return ecoff_data (abfd)->gp;
1613 else if (abfd->xvec->flavour == bfd_target_elf_flavour)
1614 return elf_gp (abfd);
1619 /* Set the GP value. */
1622 _bfd_set_gp_value (bfd *abfd, bfd_vma v)
1626 if (abfd->format != bfd_object)
1629 if (abfd->xvec->flavour == bfd_target_ecoff_flavour)
1630 ecoff_data (abfd)->gp = v;
1631 else if (abfd->xvec->flavour == bfd_target_elf_flavour)
1640 bfd_vma bfd_scan_vma (const char *string, const char **end, int base);
1643 Convert, like <<strtoul>>, a numerical expression
1644 @var{string} into a <<bfd_vma>> integer, and return that integer.
1645 (Though without as many bells and whistles as <<strtoul>>.)
1646 The expression is assumed to be unsigned (i.e., positive).
1647 If given a @var{base}, it is used as the base for conversion.
1648 A base of 0 causes the function to interpret the string
1649 in hex if a leading "0x" or "0X" is found, otherwise
1650 in octal if a leading zero is found, otherwise in decimal.
1652 If the value would overflow, the maximum <<bfd_vma>> value is
1657 bfd_scan_vma (const char *string, const char **end, int base)
1661 unsigned int cutlim;
1664 /* Let the host do it if possible. */
1665 if (sizeof (bfd_vma) <= sizeof (unsigned long))
1666 return strtoul (string, (char **) end, base);
1668 #if defined (HAVE_STRTOULL) && defined (HAVE_LONG_LONG)
1669 if (sizeof (bfd_vma) <= sizeof (unsigned long long))
1670 return strtoull (string, (char **) end, base);
1675 if (string[0] == '0')
1677 if ((string[1] == 'x') || (string[1] == 'X'))
1684 if ((base < 2) || (base > 36))
1689 && (string[1] == 'x' || string[1] == 'X')
1690 && ISXDIGIT (string[2]))
1695 cutoff = (~ (bfd_vma) 0) / (bfd_vma) base;
1696 cutlim = (~ (bfd_vma) 0) % (bfd_vma) base;
1704 if (ISDIGIT (digit))
1705 digit = digit - '0';
1706 else if (ISALPHA (digit))
1707 digit = TOUPPER (digit) - 'A' + 10;
1710 if (digit >= (unsigned int) base)
1712 if (value > cutoff || (value == cutoff && digit > cutlim))
1714 value = value * base + digit;
1719 value = ~ (bfd_vma) 0;
1729 bfd_copy_private_header_data
1732 bfd_boolean bfd_copy_private_header_data (bfd *ibfd, bfd *obfd);
1735 Copy private BFD header information from the BFD @var{ibfd} to the
1736 the BFD @var{obfd}. This copies information that may require
1737 sections to exist, but does not require symbol tables. Return
1738 <<true>> on success, <<false>> on error.
1739 Possible error returns are:
1741 o <<bfd_error_no_memory>> -
1742 Not enough memory exists to create private data for @var{obfd}.
1744 .#define bfd_copy_private_header_data(ibfd, obfd) \
1745 . BFD_SEND (obfd, _bfd_copy_private_header_data, \
1752 bfd_copy_private_bfd_data
1755 bfd_boolean bfd_copy_private_bfd_data (bfd *ibfd, bfd *obfd);
1758 Copy private BFD information from the BFD @var{ibfd} to the
1759 the BFD @var{obfd}. Return <<TRUE>> on success, <<FALSE>> on error.
1760 Possible error returns are:
1762 o <<bfd_error_no_memory>> -
1763 Not enough memory exists to create private data for @var{obfd}.
1765 .#define bfd_copy_private_bfd_data(ibfd, obfd) \
1766 . BFD_SEND (obfd, _bfd_copy_private_bfd_data, \
1773 bfd_set_private_flags
1776 bfd_boolean bfd_set_private_flags (bfd *abfd, flagword flags);
1779 Set private BFD flag information in the BFD @var{abfd}.
1780 Return <<TRUE>> on success, <<FALSE>> on error. Possible error
1783 o <<bfd_error_no_memory>> -
1784 Not enough memory exists to create private data for @var{obfd}.
1786 .#define bfd_set_private_flags(abfd, flags) \
1787 . BFD_SEND (abfd, _bfd_set_private_flags, (abfd, flags))
1796 The following functions exist but have not yet been documented.
1798 .#define bfd_sizeof_headers(abfd, info) \
1799 . BFD_SEND (abfd, _bfd_sizeof_headers, (abfd, info))
1801 .#define bfd_find_nearest_line(abfd, sec, syms, off, file, func, line) \
1802 . BFD_SEND (abfd, _bfd_find_nearest_line, \
1803 . (abfd, syms, sec, off, file, func, line, NULL))
1805 .#define bfd_find_nearest_line_discriminator(abfd, sec, syms, off, file, func, \
1807 . BFD_SEND (abfd, _bfd_find_nearest_line, \
1808 . (abfd, syms, sec, off, file, func, line, disc))
1810 .#define bfd_find_line(abfd, syms, sym, file, line) \
1811 . BFD_SEND (abfd, _bfd_find_line, \
1812 . (abfd, syms, sym, file, line))
1814 .#define bfd_find_inliner_info(abfd, file, func, line) \
1815 . BFD_SEND (abfd, _bfd_find_inliner_info, \
1816 . (abfd, file, func, line))
1818 .#define bfd_debug_info_start(abfd) \
1819 . BFD_SEND (abfd, _bfd_debug_info_start, (abfd))
1821 .#define bfd_debug_info_end(abfd) \
1822 . BFD_SEND (abfd, _bfd_debug_info_end, (abfd))
1824 .#define bfd_debug_info_accumulate(abfd, section) \
1825 . BFD_SEND (abfd, _bfd_debug_info_accumulate, (abfd, section))
1827 .#define bfd_stat_arch_elt(abfd, stat) \
1828 . BFD_SEND (abfd, _bfd_stat_arch_elt,(abfd, stat))
1830 .#define bfd_update_armap_timestamp(abfd) \
1831 . BFD_SEND (abfd, _bfd_update_armap_timestamp, (abfd))
1833 .#define bfd_set_arch_mach(abfd, arch, mach)\
1834 . BFD_SEND ( abfd, _bfd_set_arch_mach, (abfd, arch, mach))
1836 .#define bfd_relax_section(abfd, section, link_info, again) \
1837 . BFD_SEND (abfd, _bfd_relax_section, (abfd, section, link_info, again))
1839 .#define bfd_gc_sections(abfd, link_info) \
1840 . BFD_SEND (abfd, _bfd_gc_sections, (abfd, link_info))
1842 .#define bfd_lookup_section_flags(link_info, flag_info, section) \
1843 . BFD_SEND (abfd, _bfd_lookup_section_flags, (link_info, flag_info, section))
1845 .#define bfd_merge_sections(abfd, link_info) \
1846 . BFD_SEND (abfd, _bfd_merge_sections, (abfd, link_info))
1848 .#define bfd_is_group_section(abfd, sec) \
1849 . BFD_SEND (abfd, _bfd_is_group_section, (abfd, sec))
1851 .#define bfd_discard_group(abfd, sec) \
1852 . BFD_SEND (abfd, _bfd_discard_group, (abfd, sec))
1854 .#define bfd_link_hash_table_create(abfd) \
1855 . BFD_SEND (abfd, _bfd_link_hash_table_create, (abfd))
1857 .#define bfd_link_add_symbols(abfd, info) \
1858 . BFD_SEND (abfd, _bfd_link_add_symbols, (abfd, info))
1860 .#define bfd_link_just_syms(abfd, sec, info) \
1861 . BFD_SEND (abfd, _bfd_link_just_syms, (sec, info))
1863 .#define bfd_final_link(abfd, info) \
1864 . BFD_SEND (abfd, _bfd_final_link, (abfd, info))
1866 .#define bfd_free_cached_info(abfd) \
1867 . BFD_SEND (abfd, _bfd_free_cached_info, (abfd))
1869 .#define bfd_get_dynamic_symtab_upper_bound(abfd) \
1870 . BFD_SEND (abfd, _bfd_get_dynamic_symtab_upper_bound, (abfd))
1872 .#define bfd_print_private_bfd_data(abfd, file)\
1873 . BFD_SEND (abfd, _bfd_print_private_bfd_data, (abfd, file))
1875 .#define bfd_canonicalize_dynamic_symtab(abfd, asymbols) \
1876 . BFD_SEND (abfd, _bfd_canonicalize_dynamic_symtab, (abfd, asymbols))
1878 .#define bfd_get_synthetic_symtab(abfd, count, syms, dyncount, dynsyms, ret) \
1879 . BFD_SEND (abfd, _bfd_get_synthetic_symtab, (abfd, count, syms, \
1880 . dyncount, dynsyms, ret))
1882 .#define bfd_get_dynamic_reloc_upper_bound(abfd) \
1883 . BFD_SEND (abfd, _bfd_get_dynamic_reloc_upper_bound, (abfd))
1885 .#define bfd_canonicalize_dynamic_reloc(abfd, arels, asyms) \
1886 . BFD_SEND (abfd, _bfd_canonicalize_dynamic_reloc, (abfd, arels, asyms))
1888 .extern bfd_byte *bfd_get_relocated_section_contents
1889 . (bfd *, struct bfd_link_info *, struct bfd_link_order *, bfd_byte *,
1890 . bfd_boolean, asymbol **);
1896 bfd_get_relocated_section_contents (bfd *abfd,
1897 struct bfd_link_info *link_info,
1898 struct bfd_link_order *link_order,
1900 bfd_boolean relocatable,
1904 bfd_byte *(*fn) (bfd *, struct bfd_link_info *, struct bfd_link_order *,
1905 bfd_byte *, bfd_boolean, asymbol **);
1907 if (link_order->type == bfd_indirect_link_order)
1909 abfd2 = link_order->u.indirect.section->owner;
1916 fn = abfd2->xvec->_bfd_get_relocated_section_contents;
1918 return (*fn) (abfd, link_info, link_order, data, relocatable, symbols);
1921 /* Record information about an ELF program header. */
1924 bfd_record_phdr (bfd *abfd,
1926 bfd_boolean flags_valid,
1928 bfd_boolean at_valid,
1930 bfd_boolean includes_filehdr,
1931 bfd_boolean includes_phdrs,
1935 struct elf_segment_map *m, **pm;
1938 if (bfd_get_flavour (abfd) != bfd_target_elf_flavour)
1941 amt = sizeof (struct elf_segment_map);
1942 amt += ((bfd_size_type) count - 1) * sizeof (asection *);
1943 m = (struct elf_segment_map *) bfd_zalloc (abfd, amt);
1950 m->p_flags_valid = flags_valid;
1951 m->p_paddr_valid = at_valid;
1952 m->includes_filehdr = includes_filehdr;
1953 m->includes_phdrs = includes_phdrs;
1956 memcpy (m->sections, secs, count * sizeof (asection *));
1958 for (pm = &elf_seg_map (abfd); *pm != NULL; pm = &(*pm)->next)
1966 /* Return true iff this target is 32-bit. */
1971 if (bfd_get_flavour (abfd) == bfd_target_elf_flavour)
1973 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
1974 return bed->s->elfclass == ELFCLASS32;
1977 /* For non-ELF targets, use architecture information. */
1978 return bfd_arch_bits_per_address (abfd) <= 32;
1982 /* bfd_sprintf_vma and bfd_fprintf_vma display an address in the
1983 target's address size. */
1986 bfd_sprintf_vma (bfd *abfd ATTRIBUTE_UNUSED, char *buf, bfd_vma value)
1991 sprintf (buf, "%08lx", (unsigned long) value & 0xffffffff);
1995 sprintf_vma (buf, value);
1999 bfd_fprintf_vma (bfd *abfd ATTRIBUTE_UNUSED, void *stream, bfd_vma value)
2004 fprintf ((FILE *) stream, "%08lx", (unsigned long) value & 0xffffffff);
2008 fprintf_vma ((FILE *) stream, value);
2016 bfd_boolean bfd_alt_mach_code (bfd *abfd, int alternative);
2020 When more than one machine code number is available for the
2021 same machine type, this function can be used to switch between
2022 the preferred one (alternative == 0) and any others. Currently,
2023 only ELF supports this feature, with up to two alternate
2028 bfd_alt_mach_code (bfd *abfd, int alternative)
2030 if (bfd_get_flavour (abfd) == bfd_target_elf_flavour)
2034 switch (alternative)
2037 code = get_elf_backend_data (abfd)->elf_machine_code;
2041 code = get_elf_backend_data (abfd)->elf_machine_alt1;
2047 code = get_elf_backend_data (abfd)->elf_machine_alt2;
2056 elf_elfheader (abfd)->e_machine = code;
2066 bfd_emul_get_maxpagesize
2069 bfd_vma bfd_emul_get_maxpagesize (const char *);
2072 Returns the maximum page size, in bytes, as determined by
2076 Returns the maximum page size in bytes for ELF, 0 otherwise.
2080 bfd_emul_get_maxpagesize (const char *emul)
2082 const bfd_target *target;
2084 target = bfd_find_target (emul, NULL);
2086 && target->flavour == bfd_target_elf_flavour)
2087 return xvec_get_elf_backend_data (target)->maxpagesize;
2093 bfd_elf_set_pagesize (const bfd_target *target, bfd_vma size,
2094 int offset, const bfd_target *orig_target)
2096 if (target->flavour == bfd_target_elf_flavour)
2098 const struct elf_backend_data *bed;
2100 bed = xvec_get_elf_backend_data (target);
2101 *((bfd_vma *) ((char *) bed + offset)) = size;
2104 if (target->alternative_target
2105 && target->alternative_target != orig_target)
2106 bfd_elf_set_pagesize (target->alternative_target, size, offset,
2112 bfd_emul_set_maxpagesize
2115 void bfd_emul_set_maxpagesize (const char *, bfd_vma);
2118 For ELF, set the maximum page size for the emulation. It is
2119 a no-op for other formats.
2124 bfd_emul_set_maxpagesize (const char *emul, bfd_vma size)
2126 const bfd_target *target;
2128 target = bfd_find_target (emul, NULL);
2130 bfd_elf_set_pagesize (target, size,
2131 offsetof (struct elf_backend_data,
2132 maxpagesize), target);
2137 bfd_emul_get_commonpagesize
2140 bfd_vma bfd_emul_get_commonpagesize (const char *);
2143 Returns the common page size, in bytes, as determined by
2147 Returns the common page size in bytes for ELF, 0 otherwise.
2151 bfd_emul_get_commonpagesize (const char *emul)
2153 const bfd_target *target;
2155 target = bfd_find_target (emul, NULL);
2157 && target->flavour == bfd_target_elf_flavour)
2158 return xvec_get_elf_backend_data (target)->commonpagesize;
2165 bfd_emul_set_commonpagesize
2168 void bfd_emul_set_commonpagesize (const char *, bfd_vma);
2171 For ELF, set the common page size for the emulation. It is
2172 a no-op for other formats.
2177 bfd_emul_set_commonpagesize (const char *emul, bfd_vma size)
2179 const bfd_target *target;
2181 target = bfd_find_target (emul, NULL);
2183 bfd_elf_set_pagesize (target, size,
2184 offsetof (struct elf_backend_data,
2185 commonpagesize), target);
2193 char *bfd_demangle (bfd *, const char *, int);
2196 Wrapper around cplus_demangle. Strips leading underscores and
2197 other such chars that would otherwise confuse the demangler.
2198 If passed a g++ v3 ABI mangled name, returns a buffer allocated
2199 with malloc holding the demangled name. Returns NULL otherwise
2200 and on memory alloc failure.
2204 bfd_demangle (bfd *abfd, const char *name, int options)
2207 const char *pre, *suf;
2209 bfd_boolean skip_lead;
2211 skip_lead = (abfd != NULL
2213 && bfd_get_symbol_leading_char (abfd) == *name);
2217 /* This is a hack for better error reporting on XCOFF, PowerPC64-ELF
2218 or the MS PE format. These formats have a number of leading '.'s
2219 on at least some symbols, so we remove all dots to avoid
2220 confusing the demangler. */
2222 while (*name == '.' || *name == '$')
2224 pre_len = name - pre;
2226 /* Strip off @plt and suchlike too. */
2228 suf = strchr (name, '@');
2231 alloc = (char *) bfd_malloc (suf - name + 1);
2234 memcpy (alloc, name, suf - name);
2235 alloc[suf - name] = '\0';
2239 res = cplus_demangle (name, options);
2248 size_t len = strlen (pre) + 1;
2249 alloc = (char *) bfd_malloc (len);
2252 memcpy (alloc, pre, len);
2258 /* Put back any prefix or suffix. */
2259 if (pre_len != 0 || suf != NULL)
2268 suf_len = strlen (suf) + 1;
2269 final = (char *) bfd_malloc (pre_len + len + suf_len);
2272 memcpy (final, pre, pre_len);
2273 memcpy (final + pre_len, res, len);
2274 memcpy (final + pre_len + len, suf, suf_len);
2285 bfd_update_compression_header
2288 void bfd_update_compression_header
2289 (bfd *abfd, bfd_byte *contents, asection *sec);
2292 Set the compression header at CONTENTS of SEC in ABFD and update
2293 elf_section_flags for compression.
2297 bfd_update_compression_header (bfd *abfd, bfd_byte *contents,
2300 if ((abfd->flags & BFD_COMPRESS) != 0)
2302 if (bfd_get_flavour (abfd) == bfd_target_elf_flavour)
2304 if ((abfd->flags & BFD_COMPRESS_GABI) != 0)
2306 const struct elf_backend_data *bed
2307 = get_elf_backend_data (abfd);
2309 /* Set the SHF_COMPRESSED bit. */
2310 elf_section_flags (sec) |= SHF_COMPRESSED;
2312 if (bed->s->elfclass == ELFCLASS32)
2314 Elf32_External_Chdr *echdr
2315 = (Elf32_External_Chdr *) contents;
2316 bfd_put_32 (abfd, ELFCOMPRESS_ZLIB, &echdr->ch_type);
2317 bfd_put_32 (abfd, sec->size, &echdr->ch_size);
2318 bfd_put_32 (abfd, 1 << sec->alignment_power,
2319 &echdr->ch_addralign);
2323 Elf64_External_Chdr *echdr
2324 = (Elf64_External_Chdr *) contents;
2325 bfd_put_32 (abfd, ELFCOMPRESS_ZLIB, &echdr->ch_type);
2326 bfd_put_32 (abfd, 0, &echdr->ch_reserved);
2327 bfd_put_64 (abfd, sec->size, &echdr->ch_size);
2328 bfd_put_64 (abfd, 1 << sec->alignment_power,
2329 &echdr->ch_addralign);
2334 /* Clear the SHF_COMPRESSED bit. */
2335 elf_section_flags (sec) &= ~SHF_COMPRESSED;
2337 /* Write the zlib header. It should be "ZLIB" followed by
2338 the uncompressed section size, 8 bytes in big-endian
2340 memcpy (contents, "ZLIB", 4);
2341 bfd_putb64 (sec->size, contents + 4);
2351 bfd_check_compression_header
2354 bfd_boolean bfd_check_compression_header
2355 (bfd *abfd, bfd_byte *contents, asection *sec,
2356 bfd_size_type *uncompressed_size);
2359 Check the compression header at CONTENTS of SEC in ABFD and
2360 store the uncompressed size in UNCOMPRESSED_SIZE if the
2361 compression header is valid.
2364 Return TRUE if the compression header is valid.
2368 bfd_check_compression_header (bfd *abfd, bfd_byte *contents,
2370 bfd_size_type *uncompressed_size)
2372 if (bfd_get_flavour (abfd) == bfd_target_elf_flavour
2373 && (elf_section_flags (sec) & SHF_COMPRESSED) != 0)
2375 Elf_Internal_Chdr chdr;
2376 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
2377 if (bed->s->elfclass == ELFCLASS32)
2379 Elf32_External_Chdr *echdr = (Elf32_External_Chdr *) contents;
2380 chdr.ch_type = bfd_get_32 (abfd, &echdr->ch_type);
2381 chdr.ch_size = bfd_get_32 (abfd, &echdr->ch_size);
2382 chdr.ch_addralign = bfd_get_32 (abfd, &echdr->ch_addralign);
2386 Elf64_External_Chdr *echdr = (Elf64_External_Chdr *) contents;
2387 chdr.ch_type = bfd_get_32 (abfd, &echdr->ch_type);
2388 chdr.ch_size = bfd_get_64 (abfd, &echdr->ch_size);
2389 chdr.ch_addralign = bfd_get_64 (abfd, &echdr->ch_addralign);
2391 if (chdr.ch_type == ELFCOMPRESS_ZLIB
2392 && chdr.ch_addralign == 1U << sec->alignment_power)
2394 *uncompressed_size = chdr.ch_size;
2404 bfd_get_compression_header_size
2407 int bfd_get_compression_header_size (bfd *abfd, asection *sec);
2410 Return the size of the compression header of SEC in ABFD.
2413 Return the size of the compression header in bytes.
2417 bfd_get_compression_header_size (bfd *abfd, asection *sec)
2419 if (bfd_get_flavour (abfd) == bfd_target_elf_flavour)
2423 if (!(abfd->flags & BFD_COMPRESS_GABI))
2426 else if (!(elf_section_flags (sec) & SHF_COMPRESSED))
2429 if (get_elf_backend_data (abfd)->s->elfclass == ELFCLASS32)
2430 return sizeof (Elf32_External_Chdr);
2432 return sizeof (Elf64_External_Chdr);
2440 bfd_convert_section_size
2443 bfd_size_type bfd_convert_section_size
2444 (bfd *ibfd, asection *isec, bfd *obfd, bfd_size_type size);
2447 Convert the size @var{size} of the section @var{isec} in input
2448 BFD @var{ibfd} to the section size in output BFD @var{obfd}.
2452 bfd_convert_section_size (bfd *ibfd, sec_ptr isec, bfd *obfd,
2455 bfd_size_type hdr_size;
2457 /* Do nothing if input file will be decompressed. */
2458 if ((ibfd->flags & BFD_DECOMPRESS))
2461 /* Do nothing if either input or output aren't ELF. */
2462 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
2463 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
2466 /* Do nothing if ELF classes of input and output are the same. */
2467 if (get_elf_backend_data (ibfd)->s->elfclass
2468 == get_elf_backend_data (obfd)->s->elfclass)
2471 /* Do nothing if the input section isn't a SHF_COMPRESSED section. */
2472 hdr_size = bfd_get_compression_header_size (ibfd, isec);
2476 /* Adjust the size of the output SHF_COMPRESSED section. */
2477 if (hdr_size == sizeof (Elf32_External_Chdr))
2478 return (size - sizeof (Elf32_External_Chdr)
2479 + sizeof (Elf64_External_Chdr));
2481 return (size - sizeof (Elf64_External_Chdr)
2482 + sizeof (Elf32_External_Chdr));
2487 bfd_convert_section_contents
2490 bfd_boolean bfd_convert_section_contents
2491 (bfd *ibfd, asection *isec, bfd *obfd,
2492 bfd_byte **ptr, bfd_size_type *ptr_size);
2495 Convert the contents, stored in @var{*ptr}, of the section
2496 @var{isec} in input BFD @var{ibfd} to output BFD @var{obfd}
2497 if needed. The original buffer pointed to by @var{*ptr} may
2498 be freed and @var{*ptr} is returned with memory malloc'd by this
2499 function, and the new size written to @var{ptr_size}.
2503 bfd_convert_section_contents (bfd *ibfd, sec_ptr isec, bfd *obfd,
2504 bfd_byte **ptr, bfd_size_type *ptr_size)
2507 bfd_size_type ihdr_size, ohdr_size, size;
2508 Elf_Internal_Chdr chdr;
2509 bfd_boolean use_memmove;
2511 /* Do nothing if input file will be decompressed. */
2512 if ((ibfd->flags & BFD_DECOMPRESS))
2515 /* Do nothing if either input or output aren't ELF. */
2516 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
2517 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
2520 /* Do nothing if ELF classes of input and output are the same. */
2521 if (get_elf_backend_data (ibfd)->s->elfclass
2522 == get_elf_backend_data (obfd)->s->elfclass)
2525 /* Do nothing if the input section isn't a SHF_COMPRESSED section. */
2526 ihdr_size = bfd_get_compression_header_size (ibfd, isec);
2532 /* Convert the contents of the input SHF_COMPRESSED section to
2533 output. Get the input compression header and the size of the
2534 output compression header. */
2535 if (ihdr_size == sizeof (Elf32_External_Chdr))
2537 Elf32_External_Chdr *echdr = (Elf32_External_Chdr *) contents;
2538 chdr.ch_type = bfd_get_32 (ibfd, &echdr->ch_type);
2539 chdr.ch_size = bfd_get_32 (ibfd, &echdr->ch_size);
2540 chdr.ch_addralign = bfd_get_32 (ibfd, &echdr->ch_addralign);
2542 ohdr_size = sizeof (Elf64_External_Chdr);
2544 use_memmove = FALSE;
2548 Elf64_External_Chdr *echdr = (Elf64_External_Chdr *) contents;
2549 chdr.ch_type = bfd_get_32 (ibfd, &echdr->ch_type);
2550 chdr.ch_size = bfd_get_64 (ibfd, &echdr->ch_size);
2551 chdr.ch_addralign = bfd_get_64 (ibfd, &echdr->ch_addralign);
2553 ohdr_size = sizeof (Elf32_External_Chdr);
2557 size = bfd_get_section_size (isec) - ihdr_size + ohdr_size;
2560 contents = (bfd_byte *) bfd_malloc (size);
2561 if (contents == NULL)
2565 /* Write out the output compression header. */
2566 if (ohdr_size == sizeof (Elf32_External_Chdr))
2568 Elf32_External_Chdr *echdr = (Elf32_External_Chdr *) contents;
2569 bfd_put_32 (obfd, ELFCOMPRESS_ZLIB, &echdr->ch_type);
2570 bfd_put_32 (obfd, chdr.ch_size, &echdr->ch_size);
2571 bfd_put_32 (obfd, chdr.ch_addralign, &echdr->ch_addralign);
2575 Elf64_External_Chdr *echdr = (Elf64_External_Chdr *) contents;
2576 bfd_put_32 (obfd, ELFCOMPRESS_ZLIB, &echdr->ch_type);
2577 bfd_put_32 (obfd, 0, &echdr->ch_reserved);
2578 bfd_put_64 (obfd, chdr.ch_size, &echdr->ch_size);
2579 bfd_put_64 (obfd, chdr.ch_addralign, &echdr->ch_addralign);
2582 /* Copy the compressed contents. */
2584 memmove (contents + ohdr_size, *ptr + ihdr_size, size - ohdr_size);
2587 memcpy (contents + ohdr_size, *ptr + ihdr_size, size - ohdr_size);