1 /* Generic BFD library interface and support routines.
2 Copyright (C) 1990-2019 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 . {* Track current file position (or current buffer offset for
78 . in-memory BFDs). When a file is closed by the caching routines,
79 . BFD retains state information on the file here. *}
82 . {* File modified time, if mtime_set is TRUE. *}
85 . {* A unique identifier of the BFD *}
88 . {* The format which belongs to the BFD. (object, core, etc.) *}
89 . ENUM_BITFIELD (bfd_format) format : 3;
91 . {* The direction with which the BFD was opened. *}
92 . ENUM_BITFIELD (bfd_direction) direction : 2;
94 . {* Format_specific flags. *}
95 . flagword flags : 20;
97 . {* Values that may appear in the flags field of a BFD. These also
98 . appear in the object_flags field of the bfd_target structure, where
99 . they indicate the set of flags used by that backend (not all flags
100 . are meaningful for all object file formats) (FIXME: at the moment,
101 . the object_flags values have mostly just been copied from backend
102 . to another, and are not necessarily correct). *}
104 .#define BFD_NO_FLAGS 0x0
106 . {* BFD contains relocation entries. *}
107 .#define HAS_RELOC 0x1
109 . {* BFD is directly executable. *}
112 . {* BFD has line number information (basically used for F_LNNO in a
114 .#define HAS_LINENO 0x4
116 . {* BFD has debugging information. *}
117 .#define HAS_DEBUG 0x08
119 . {* BFD has symbols. *}
120 .#define HAS_SYMS 0x10
122 . {* BFD has local symbols (basically used for F_LSYMS in a COFF
124 .#define HAS_LOCALS 0x20
126 . {* BFD is a dynamic object. *}
127 .#define DYNAMIC 0x40
129 . {* Text section is write protected (if D_PAGED is not set, this is
130 . like an a.out NMAGIC file) (the linker sets this by default, but
131 . clears it for -r or -N). *}
132 .#define WP_TEXT 0x80
134 . {* BFD is dynamically paged (this is like an a.out ZMAGIC file) (the
135 . linker sets this by default, but clears it for -r or -n or -N). *}
136 .#define D_PAGED 0x100
138 . {* BFD is relaxable (this means that bfd_relax_section may be able to
139 . do something) (sometimes bfd_relax_section can do something even if
140 . this is not set). *}
141 .#define BFD_IS_RELAXABLE 0x200
143 . {* This may be set before writing out a BFD to request using a
144 . traditional format. For example, this is used to request that when
145 . writing out an a.out object the symbols not be hashed to eliminate
147 .#define BFD_TRADITIONAL_FORMAT 0x400
149 . {* This flag indicates that the BFD contents are actually cached
150 . in memory. If this is set, iostream points to a bfd_in_memory
152 .#define BFD_IN_MEMORY 0x800
154 . {* This BFD has been created by the linker and doesn't correspond
155 . to any input file. *}
156 .#define BFD_LINKER_CREATED 0x1000
158 . {* This may be set before writing out a BFD to request that it
159 . be written using values for UIDs, GIDs, timestamps, etc. that
160 . will be consistent from run to run. *}
161 .#define BFD_DETERMINISTIC_OUTPUT 0x2000
163 . {* Compress sections in this BFD. *}
164 .#define BFD_COMPRESS 0x4000
166 . {* Decompress sections in this BFD. *}
167 .#define BFD_DECOMPRESS 0x8000
169 . {* BFD is a dummy, for plugins. *}
170 .#define BFD_PLUGIN 0x10000
172 . {* Compress sections in this BFD with SHF_COMPRESSED from gABI. *}
173 .#define BFD_COMPRESS_GABI 0x20000
175 . {* Convert ELF common symbol type to STT_COMMON or STT_OBJECT in this
177 .#define BFD_CONVERT_ELF_COMMON 0x40000
179 . {* Use the ELF STT_COMMON type in this BFD. *}
180 .#define BFD_USE_ELF_STT_COMMON 0x80000
182 . {* Flags bits to be saved in bfd_preserve_save. *}
183 .#define BFD_FLAGS_SAVED \
184 . (BFD_IN_MEMORY | BFD_COMPRESS | BFD_DECOMPRESS | BFD_LINKER_CREATED \
185 . | BFD_PLUGIN | BFD_COMPRESS_GABI | BFD_CONVERT_ELF_COMMON \
186 . | BFD_USE_ELF_STT_COMMON)
188 . {* Flags bits which are for BFD use only. *}
189 .#define BFD_FLAGS_FOR_BFD_USE_MASK \
190 . (BFD_IN_MEMORY | BFD_COMPRESS | BFD_DECOMPRESS | BFD_LINKER_CREATED \
191 . | BFD_PLUGIN | BFD_TRADITIONAL_FORMAT | BFD_DETERMINISTIC_OUTPUT \
192 . | BFD_COMPRESS_GABI | BFD_CONVERT_ELF_COMMON | BFD_USE_ELF_STT_COMMON)
194 . {* Is the file descriptor being cached? That is, can it be closed as
195 . needed, and re-opened when accessed later? *}
196 . unsigned int cacheable : 1;
198 . {* Marks whether there was a default target specified when the
199 . BFD was opened. This is used to select which matching algorithm
200 . to use to choose the back end. *}
201 . unsigned int target_defaulted : 1;
203 . {* ... and here: (``once'' means at least once). *}
204 . unsigned int opened_once : 1;
206 . {* Set if we have a locally maintained mtime value, rather than
207 . getting it from the file each time. *}
208 . unsigned int mtime_set : 1;
210 . {* Flag set if symbols from this BFD should not be exported. *}
211 . unsigned int no_export : 1;
213 . {* Remember when output has begun, to stop strange things
215 . unsigned int output_has_begun : 1;
217 . {* Have archive map. *}
218 . unsigned int has_armap : 1;
220 . {* Set if this is a thin archive. *}
221 . unsigned int is_thin_archive : 1;
223 . {* Set if this archive should not cache element positions. *}
224 . unsigned int no_element_cache : 1;
226 . {* Set if only required symbols should be added in the link hash table for
227 . this object. Used by VMS linkers. *}
228 . unsigned int selective_search : 1;
230 . {* Set if this is the linker output BFD. *}
231 . unsigned int is_linker_output : 1;
233 . {* Set if this is the linker input BFD. *}
234 . unsigned int is_linker_input : 1;
236 . {* If this is an input for a compiler plug-in library. *}
237 . ENUM_BITFIELD (bfd_plugin_format) plugin_format : 2;
239 . {* Set if this is a plugin output file. *}
240 . unsigned int lto_output : 1;
242 . {* Set if this is a slim LTO object not loaded with a compiler plugin. *}
243 . unsigned int lto_slim_object : 1;
245 . {* Set to dummy BFD created when claimed by a compiler plug-in
247 . bfd *plugin_dummy_bfd;
249 . {* Currently my_archive is tested before adding origin to
250 . anything. I believe that this can become always an add of
251 . origin, with origin set to 0 for non archive files. *}
254 . {* The origin in the archive of the proxy entry. This will
255 . normally be the same as origin, except for thin archives,
256 . when it will contain the current offset of the proxy in the
257 . thin archive rather than the offset of the bfd in its actual
259 . ufile_ptr proxy_origin;
261 . {* A hash table for section names. *}
262 . struct bfd_hash_table section_htab;
264 . {* Pointer to linked list of sections. *}
265 . struct bfd_section *sections;
267 . {* The last section on the section list. *}
268 . struct bfd_section *section_last;
270 . {* The number of sections. *}
271 . unsigned int section_count;
273 . {* A field used by _bfd_generic_link_add_archive_symbols. This will
274 . be used only for archive elements. *}
277 . {* Stuff only useful for object files:
278 . The start address. *}
279 . bfd_vma start_address;
281 . {* Symbol table for output BFD (with symcount entries).
282 . Also used by the linker to cache input BFD symbols. *}
283 . struct bfd_symbol **outsymbols;
285 . {* Used for input and output. *}
286 . unsigned int symcount;
288 . {* Used for slurped dynamic symbol tables. *}
289 . unsigned int dynsymcount;
291 . {* Pointer to structure which contains architecture information. *}
292 . const struct bfd_arch_info *arch_info;
294 . {* Stuff only useful for archives. *}
296 . struct bfd *my_archive; {* The containing archive BFD. *}
297 . struct bfd *archive_next; {* The next BFD in the archive. *}
298 . struct bfd *archive_head; {* The first BFD in the archive. *}
299 . struct bfd *nested_archives; {* List of nested archive in a flattened
303 . {* For input BFDs, a chain of BFDs involved in a link. *}
305 . {* For output BFD, the linker hash table. *}
306 . struct bfd_link_hash_table *hash;
309 . {* Used by the back end to hold private data. *}
312 . struct aout_data_struct *aout_data;
313 . struct artdata *aout_ar_data;
314 . struct coff_tdata *coff_obj_data;
315 . struct pe_tdata *pe_obj_data;
316 . struct xcoff_tdata *xcoff_obj_data;
317 . struct ecoff_tdata *ecoff_obj_data;
318 . struct srec_data_struct *srec_data;
319 . struct verilog_data_struct *verilog_data;
320 . struct ihex_data_struct *ihex_data;
321 . struct tekhex_data_struct *tekhex_data;
322 . struct elf_obj_tdata *elf_obj_data;
323 . struct mmo_data_struct *mmo_data;
324 . struct sun_core_struct *sun_core_data;
325 . struct sco5_core_struct *sco5_core_data;
326 . struct trad_core_struct *trad_core_data;
327 . struct som_data_struct *som_data;
328 . struct hpux_core_struct *hpux_core_data;
329 . struct hppabsd_core_struct *hppabsd_core_data;
330 . struct sgi_core_struct *sgi_core_data;
331 . struct lynx_core_struct *lynx_core_data;
332 . struct osf_core_struct *osf_core_data;
333 . struct cisco_core_struct *cisco_core_data;
334 . struct versados_data_struct *versados_data;
335 . struct netbsd_core_struct *netbsd_core_data;
336 . struct mach_o_data_struct *mach_o_data;
337 . struct mach_o_fat_data_struct *mach_o_fat_data;
338 . struct plugin_data_struct *plugin_data;
339 . struct bfd_pef_data_struct *pef_data;
340 . struct bfd_pef_xlib_data_struct *pef_xlib_data;
341 . struct bfd_sym_data_struct *sym_data;
346 . {* Used by the application to hold private data. *}
349 . {* Where all the allocated stuff under this BFD goes. This is a
350 . struct objalloc *, but we use void * to avoid requiring the inclusion
354 . {* For input BFDs, the build ID, if the object has one. *}
355 . const struct bfd_build_id *build_id;
358 .{* See note beside bfd_set_section_userdata. *}
359 .static inline bfd_boolean
360 .bfd_set_cacheable (bfd * abfd, bfd_boolean val)
362 . abfd->cacheable = val;
372 #include "libiberty.h"
373 #include "demangle.h"
374 #include "safe-ctype.h"
377 #include "coff/internal.h"
378 #include "coff/sym.h"
380 #include "libecoff.h"
385 #define EXIT_FAILURE 1
389 /* provide storage for subsystem, stack and heap data which may have been
390 passed in on the command line. Ld puts this data into a bfd_link_info
391 struct which ultimately gets passed in to the bfd. When it arrives, copy
392 it to the following struct so that the data will be available in coffcode.h
393 where it is needed. The typedef's used are defined in bfd.h */
397 Error reporting, Miscellaneous, typedef bfd, BFD front end
402 Most BFD functions return nonzero on success (check their
403 individual documentation for precise semantics). On an error,
404 they call <<bfd_set_error>> to set an error condition that callers
405 can check by calling <<bfd_get_error>>.
406 If that returns <<bfd_error_system_call>>, then check
409 The easiest way to report a BFD error to the user is to
413 Type <<bfd_error_type>>
415 The values returned by <<bfd_get_error>> are defined by the
416 enumerated type <<bfd_error_type>>.
420 .typedef enum bfd_error
422 . bfd_error_no_error = 0,
423 . bfd_error_system_call,
424 . bfd_error_invalid_target,
425 . bfd_error_wrong_format,
426 . bfd_error_wrong_object_format,
427 . bfd_error_invalid_operation,
428 . bfd_error_no_memory,
429 . bfd_error_no_symbols,
430 . bfd_error_no_armap,
431 . bfd_error_no_more_archived_files,
432 . bfd_error_malformed_archive,
433 . bfd_error_missing_dso,
434 . bfd_error_file_not_recognized,
435 . bfd_error_file_ambiguously_recognized,
436 . bfd_error_no_contents,
437 . bfd_error_nonrepresentable_section,
438 . bfd_error_no_debug_section,
439 . bfd_error_bad_value,
440 . bfd_error_file_truncated,
441 . bfd_error_file_too_big,
442 . bfd_error_on_input,
443 . bfd_error_invalid_error_code
449 static bfd_error_type bfd_error = bfd_error_no_error;
450 static bfd *input_bfd = NULL;
451 static bfd_error_type input_error = bfd_error_no_error;
453 const char *const bfd_errmsgs[] =
456 N_("system call error"),
457 N_("invalid bfd target"),
458 N_("file in wrong format"),
459 N_("archive object file in wrong format"),
460 N_("invalid operation"),
461 N_("memory exhausted"),
463 N_("archive has no index; run ranlib to add one"),
464 N_("no more archived files"),
465 N_("malformed archive"),
466 N_("DSO missing from command line"),
467 N_("file format not recognized"),
468 N_("file format is ambiguous"),
469 N_("section has no contents"),
470 N_("nonrepresentable section on output"),
471 N_("symbol needs debug section which does not exist"),
473 N_("file truncated"),
475 N_("error reading %s: %s"),
476 N_("#<invalid error code>")
484 bfd_error_type bfd_get_error (void);
487 Return the current BFD error condition.
501 void bfd_set_error (bfd_error_type error_tag);
504 Set the BFD error condition to be @var{error_tag}.
506 @var{error_tag} must not be bfd_error_on_input. Use
507 bfd_set_input_error for input errors instead.
511 bfd_set_error (bfd_error_type error_tag)
513 bfd_error = error_tag;
514 if (bfd_error >= bfd_error_on_input)
523 void bfd_set_input_error (bfd *input, bfd_error_type error_tag);
527 Set the BFD error condition to be bfd_error_on_input.
528 @var{input} is the input bfd where the error occurred, and
529 @var{error_tag} the bfd_error_type error.
533 bfd_set_input_error (bfd *input, bfd_error_type error_tag)
535 /* This is an error that occurred during bfd_close when writing an
536 archive, but on one of the input files. */
537 bfd_error = bfd_error_on_input;
539 input_error = error_tag;
540 if (input_error >= bfd_error_on_input)
549 const char *bfd_errmsg (bfd_error_type error_tag);
552 Return a string describing the error @var{error_tag}, or
553 the system error if @var{error_tag} is <<bfd_error_system_call>>.
557 bfd_errmsg (bfd_error_type error_tag)
562 if (error_tag == bfd_error_on_input)
565 const char *msg = bfd_errmsg (input_error);
567 if (asprintf (&buf, _(bfd_errmsgs [error_tag]), input_bfd->filename, msg)
571 /* Ick, what to do on out of memory? */
575 if (error_tag == bfd_error_system_call)
576 return xstrerror (errno);
578 if (error_tag > bfd_error_invalid_error_code)
579 error_tag = bfd_error_invalid_error_code; /* sanity check */
581 return _(bfd_errmsgs [error_tag]);
589 void bfd_perror (const char *message);
592 Print to the standard error stream a string describing the
593 last BFD error that occurred, or the last system error if
594 the last BFD error was a system call failure. If @var{message}
595 is non-NULL and non-empty, the error string printed is preceded
596 by @var{message}, a colon, and a space. It is followed by a newline.
600 bfd_perror (const char *message)
603 if (message == NULL || *message == '\0')
604 fprintf (stderr, "%s\n", bfd_errmsg (bfd_get_error ()));
606 fprintf (stderr, "%s: %s\n", message, bfd_errmsg (bfd_get_error ()));
614 Some BFD functions want to print messages describing the
615 problem. They call a BFD error handler function. This
616 function may be overridden by the program.
618 The BFD error handler acts like vprintf.
622 .typedef void (*bfd_error_handler_type) (const char *, va_list);
626 /* The program name used when printing BFD error messages. */
628 static const char *_bfd_error_program_name;
630 /* Support for positional parameters. */
632 union _bfd_doprnt_args
652 /* This macro and _bfd_doprnt taken from libiberty _doprnt.c, tidied a
653 little and extended to handle '%pA', '%pB' and positional parameters. */
655 #define PRINT_TYPE(TYPE, FIELD) \
658 TYPE value = (TYPE) args[arg_no].FIELD; \
659 result = fprintf (stream, specifier, value); \
663 _bfd_doprnt (FILE *stream, const char *format, union _bfd_doprnt_args *args)
665 const char *ptr = format;
667 int total_printed = 0;
668 unsigned int arg_count = 0;
676 /* While we have regular characters, print them. */
677 char *end = strchr (ptr, '%');
679 result = fprintf (stream, "%.*s", (int) (end - ptr), ptr);
681 result = fprintf (stream, "%s", ptr);
684 else if (ptr[1] == '%')
692 /* We have a format specifier! */
693 char *sptr = specifier;
694 int wide_width = 0, short_width = 0;
697 /* Copy the % and move forward. */
700 /* Check for a positional parameter. */
702 if (*ptr != '0' && ISDIGIT (*ptr) && ptr[1] == '$')
708 /* Move past flags. */
709 while (strchr ("-+ #0'I", *ptr))
715 unsigned int arg_index;
718 arg_index = arg_count;
719 if (*ptr != '0' && ISDIGIT (*ptr) && ptr[1] == '$')
721 arg_index = *ptr - '1';
724 value = abs (args[arg_index].i);
726 sptr += sprintf (sptr, "%d", value);
729 /* Handle explicit numeric value. */
730 while (ISDIGIT (*ptr))
736 /* Copy and go past the period. */
741 unsigned int arg_index;
744 arg_index = arg_count;
745 if (*ptr != '0' && ISDIGIT (*ptr) && ptr[1] == '$')
747 arg_index = *ptr - '1';
750 value = abs (args[arg_index].i);
752 sptr += sprintf (sptr, "%d", value);
755 /* Handle explicit numeric value. */
756 while (ISDIGIT (*ptr))
759 while (strchr ("hlL", *ptr))
778 /* Copy the type specifier, and NULL terminate. */
781 if ((int) arg_no < 0)
794 /* Short values are promoted to int, so just copy it
795 as an int and trust the C library printf to cast it
796 to the right width. */
807 PRINT_TYPE (long, l);
811 #if defined (__MSVCRT__)
818 #if defined (__GNUC__) || defined (HAVE_LONG_LONG)
819 PRINT_TYPE (long long, ll);
821 /* Fake it and hope for the best. */
822 PRINT_TYPE (long, l);
836 PRINT_TYPE (double, d);
839 #if defined (__GNUC__) || defined (HAVE_LONG_DOUBLE)
840 PRINT_TYPE (long double, ld);
842 /* Fake it and hope for the best. */
843 PRINT_TYPE (double, d);
849 PRINT_TYPE (char *, p);
856 const char *group = NULL;
857 struct coff_comdat_info *ci;
860 sec = (asection *) args[arg_no].p;
862 /* Invoking %pA with a null section pointer is an
867 && bfd_get_flavour (abfd) == bfd_target_elf_flavour
868 && elf_next_in_group (sec) != NULL
869 && (sec->flags & SEC_GROUP) == 0)
870 group = elf_group_name (sec);
871 else if (abfd != NULL
872 && bfd_get_flavour (abfd) == bfd_target_coff_flavour
873 && (ci = bfd_coff_get_comdat_section (sec->owner,
877 result = fprintf (stream, "%s[%s]", sec->name, group);
879 result = fprintf (stream, "%s", sec->name);
881 else if (*ptr == 'B')
886 abfd = (bfd *) args[arg_no].p;
888 /* Invoking %pB with a null bfd pointer is an
891 else if (abfd->my_archive
892 && !bfd_is_thin_archive (abfd->my_archive))
893 result = fprintf (stream, "%s(%s)",
894 abfd->my_archive->filename,
897 result = fprintf (stream, "%s", abfd->filename);
900 PRINT_TYPE (void *, p);
909 total_printed += result;
912 return total_printed;
915 /* First pass over FORMAT to gather ARGS. Returns number of args. */
918 _bfd_doprnt_scan (const char *format, union _bfd_doprnt_args *args)
920 const char *ptr = format;
921 unsigned int arg_count = 0;
927 ptr = strchr (ptr, '%');
931 else if (ptr[1] == '%')
935 int wide_width = 0, short_width = 0;
941 /* Check for a positional parameter. */
943 if (*ptr != '0' && ISDIGIT (*ptr) && ptr[1] == '$')
949 /* Move past flags. */
950 while (strchr ("-+ #0'I", *ptr))
955 unsigned int arg_index;
958 arg_index = arg_count;
959 if (*ptr != '0' && ISDIGIT (*ptr) && ptr[1] == '$')
961 arg_index = *ptr - '1';
966 args[arg_index].type = Int;
970 /* Handle explicit numeric value. */
971 while (ISDIGIT (*ptr))
980 unsigned int arg_index;
983 arg_index = arg_count;
984 if (*ptr != '0' && ISDIGIT (*ptr) && ptr[1] == '$')
986 arg_index = *ptr - '1';
991 args[arg_index].type = Int;
995 /* Handle explicit numeric value. */
996 while (ISDIGIT (*ptr))
999 while (strchr ("hlL", *ptr))
1019 if ((int) arg_no < 0)
1047 #if defined (__GNUC__) || defined (HAVE_LONG_LONG)
1048 arg_type = LongLong;
1063 if (wide_width == 0)
1067 #if defined (__GNUC__) || defined (HAVE_LONG_DOUBLE)
1068 arg_type = LongDouble;
1079 if (*ptr == 'A' || *ptr == 'B')
1089 args[arg_no].type = arg_type;
1098 error_handler_internal (const char *fmt, va_list ap)
1100 unsigned int i, arg_count;
1101 union _bfd_doprnt_args args[9];
1103 for (i = 0; i < sizeof (args) / sizeof (args[0]); i++)
1106 arg_count = _bfd_doprnt_scan (fmt, args);
1107 for (i = 0; i < arg_count; i++)
1109 switch (args[i].type)
1112 args[i].i = va_arg (ap, int);
1115 args[i].l = va_arg (ap, long);
1118 args[i].ll = va_arg (ap, long long);
1121 args[i].d = va_arg (ap, double);
1124 args[i].ld = va_arg (ap, long double);
1127 args[i].p = va_arg (ap, void *);
1134 /* PR 4992: Don't interrupt output being sent to stdout. */
1137 if (_bfd_error_program_name != NULL)
1138 fprintf (stderr, "%s: ", _bfd_error_program_name);
1140 fprintf (stderr, "BFD: ");
1142 _bfd_doprnt (stderr, fmt, args);
1144 /* On AIX, putc is implemented as a macro that triggers a -Wunused-value
1145 warning, so use the fputc function to avoid it. */
1146 fputc ('\n', stderr);
1150 /* This is a function pointer to the routine which should handle BFD
1151 error messages. It is called when a BFD routine encounters an
1152 error for which it wants to print a message. Going through a
1153 function pointer permits a program linked against BFD to intercept
1154 the messages and deal with them itself. */
1156 static bfd_error_handler_type _bfd_error_internal = error_handler_internal;
1163 void _bfd_error_handler (const char *fmt, ...) ATTRIBUTE_PRINTF_1;
1166 This is the default routine to handle BFD error messages.
1167 Like fprintf (stderr, ...), but also handles some extra format
1170 %pA section name from section. For group components, prints
1172 %pB file name from bfd. For archive components, prints
1175 Beware: Only supports a maximum of 9 format arguments.
1179 _bfd_error_handler (const char *fmt, ...)
1184 _bfd_error_internal (fmt, ap);
1190 bfd_set_error_handler
1193 bfd_error_handler_type bfd_set_error_handler (bfd_error_handler_type);
1196 Set the BFD error handler function. Returns the previous
1200 bfd_error_handler_type
1201 bfd_set_error_handler (bfd_error_handler_type pnew)
1203 bfd_error_handler_type pold;
1205 pold = _bfd_error_internal;
1206 _bfd_error_internal = pnew;
1212 bfd_set_error_program_name
1215 void bfd_set_error_program_name (const char *);
1218 Set the program name to use when printing a BFD error. This
1219 is printed before the error message followed by a colon and
1220 space. The string must not be changed after it is passed to
1225 bfd_set_error_program_name (const char *name)
1227 _bfd_error_program_name = name;
1234 If BFD finds an internal inconsistency, the bfd assert
1235 handler is called with information on the BFD version, BFD
1236 source file and line. If this happens, most programs linked
1237 against BFD are expected to want to exit with an error, or mark
1238 the current BFD operation as failed, so it is recommended to
1239 override the default handler, which just calls
1240 _bfd_error_handler and continues.
1244 .typedef void (*bfd_assert_handler_type) (const char *bfd_formatmsg,
1245 . const char *bfd_version,
1246 . const char *bfd_file,
1251 /* Note the use of bfd_ prefix on the parameter names above: we want to
1252 show which one is the message and which is the version by naming the
1253 parameters, but avoid polluting the program-using-bfd namespace as
1254 the typedef is visible in the exported headers that the program
1255 includes. Below, it's just for consistency. */
1258 _bfd_default_assert_handler (const char *bfd_formatmsg,
1259 const char *bfd_version,
1260 const char *bfd_file,
1264 _bfd_error_handler (bfd_formatmsg, bfd_version, bfd_file, bfd_line);
1267 /* Similar to _bfd_error_handler, a program can decide to exit on an
1268 internal BFD error. We use a non-variadic type to simplify passing
1269 on parameters to other functions, e.g. _bfd_error_handler. */
1271 static bfd_assert_handler_type _bfd_assert_handler = _bfd_default_assert_handler;
1275 bfd_set_assert_handler
1278 bfd_assert_handler_type bfd_set_assert_handler (bfd_assert_handler_type);
1281 Set the BFD assert handler function. Returns the previous
1285 bfd_assert_handler_type
1286 bfd_set_assert_handler (bfd_assert_handler_type pnew)
1288 bfd_assert_handler_type pold;
1290 pold = _bfd_assert_handler;
1291 _bfd_assert_handler = pnew;
1297 Miscellaneous, Memory Usage, Error reporting, BFD front end
1303 Miscellaneous functions
1308 bfd_get_reloc_upper_bound
1311 long bfd_get_reloc_upper_bound (bfd *abfd, asection *sect);
1314 Return the number of bytes required to store the
1315 relocation information associated with section @var{sect}
1316 attached to bfd @var{abfd}. If an error occurs, return -1.
1321 bfd_get_reloc_upper_bound (bfd *abfd, sec_ptr asect)
1323 if (abfd->format != bfd_object)
1325 bfd_set_error (bfd_error_invalid_operation);
1329 return BFD_SEND (abfd, _get_reloc_upper_bound, (abfd, asect));
1334 bfd_canonicalize_reloc
1337 long bfd_canonicalize_reloc
1338 (bfd *abfd, asection *sec, arelent **loc, asymbol **syms);
1341 Call the back end associated with the open BFD
1342 @var{abfd} and translate the external form of the relocation
1343 information attached to @var{sec} into the internal canonical
1344 form. Place the table into memory at @var{loc}, which has
1345 been preallocated, usually by a call to
1346 <<bfd_get_reloc_upper_bound>>. Returns the number of relocs, or
1349 The @var{syms} table is also needed for horrible internal magic
1354 bfd_canonicalize_reloc (bfd *abfd,
1359 if (abfd->format != bfd_object)
1361 bfd_set_error (bfd_error_invalid_operation);
1365 return BFD_SEND (abfd, _bfd_canonicalize_reloc,
1366 (abfd, asect, location, symbols));
1375 (bfd *abfd, asection *sec, arelent **rel, unsigned int count);
1378 Set the relocation pointer and count within
1379 section @var{sec} to the values @var{rel} and @var{count}.
1380 The argument @var{abfd} is ignored.
1382 .#define bfd_set_reloc(abfd, asect, location, count) \
1383 . BFD_SEND (abfd, _bfd_set_reloc, (abfd, asect, location, count))
1391 bfd_boolean bfd_set_file_flags (bfd *abfd, flagword flags);
1394 Set the flag word in the BFD @var{abfd} to the value @var{flags}.
1396 Possible errors are:
1397 o <<bfd_error_wrong_format>> - The target bfd was not of object format.
1398 o <<bfd_error_invalid_operation>> - The target bfd was open for reading.
1399 o <<bfd_error_invalid_operation>> -
1400 The flag word contained a bit which was not applicable to the
1401 type of file. E.g., an attempt was made to set the <<D_PAGED>> bit
1402 on a BFD format which does not support demand paging.
1407 bfd_set_file_flags (bfd *abfd, flagword flags)
1409 if (abfd->format != bfd_object)
1411 bfd_set_error (bfd_error_wrong_format);
1415 if (bfd_read_p (abfd))
1417 bfd_set_error (bfd_error_invalid_operation);
1421 bfd_get_file_flags (abfd) = flags;
1422 if ((flags & bfd_applicable_file_flags (abfd)) != flags)
1424 bfd_set_error (bfd_error_invalid_operation);
1432 bfd_assert (const char *file, int line)
1434 /* xgettext:c-format */
1435 (*_bfd_assert_handler) (_("BFD %s assertion fail %s:%d"),
1436 BFD_VERSION_STRING, file, line);
1439 /* A more or less friendly abort message. In libbfd.h abort is
1440 defined to call this function. */
1443 _bfd_abort (const char *file, int line, const char *fn)
1447 /* xgettext:c-format */
1448 (_("BFD %s internal error, aborting at %s:%d in %s\n"),
1449 BFD_VERSION_STRING, file, line, fn);
1452 /* xgettext:c-format */
1453 (_("BFD %s internal error, aborting at %s:%d\n"),
1454 BFD_VERSION_STRING, file, line);
1455 _bfd_error_handler (_("Please report this bug.\n"));
1456 _exit (EXIT_FAILURE);
1464 int bfd_get_arch_size (bfd *abfd);
1467 Returns the normalized architecture address size, in bits, as
1468 determined by the object file's format. By normalized, we mean
1469 either 32 or 64. For ELF, this information is included in the
1470 header. Use bfd_arch_bits_per_address for number of bits in
1471 the architecture address.
1474 Returns the arch size in bits if known, <<-1>> otherwise.
1478 bfd_get_arch_size (bfd *abfd)
1480 if (abfd->xvec->flavour == bfd_target_elf_flavour)
1481 return get_elf_backend_data (abfd)->s->arch_size;
1483 return bfd_arch_bits_per_address (abfd) > 32 ? 64 : 32;
1488 bfd_get_sign_extend_vma
1491 int bfd_get_sign_extend_vma (bfd *abfd);
1494 Indicates if the target architecture "naturally" sign extends
1495 an address. Some architectures implicitly sign extend address
1496 values when they are converted to types larger than the size
1497 of an address. For instance, bfd_get_start_address() will
1498 return an address sign extended to fill a bfd_vma when this is
1502 Returns <<1>> if the target architecture is known to sign
1503 extend addresses, <<0>> if the target architecture is known to
1504 not sign extend addresses, and <<-1>> otherwise.
1508 bfd_get_sign_extend_vma (bfd *abfd)
1512 if (bfd_get_flavour (abfd) == bfd_target_elf_flavour)
1513 return get_elf_backend_data (abfd)->sign_extend_vma;
1515 name = bfd_get_target (abfd);
1517 /* Return a proper value for DJGPP & PE COFF.
1518 This function is required for DWARF2 support, but there is
1519 no place to store this information in the COFF back end.
1520 Should enough other COFF targets add support for DWARF2,
1521 a place will have to be found. Until then, this hack will do. */
1522 if (CONST_STRNEQ (name, "coff-go32")
1523 || strcmp (name, "pe-i386") == 0
1524 || strcmp (name, "pei-i386") == 0
1525 || strcmp (name, "pe-x86-64") == 0
1526 || strcmp (name, "pei-x86-64") == 0
1527 || strcmp (name, "pe-arm-wince-little") == 0
1528 || strcmp (name, "pei-arm-wince-little") == 0
1529 || strcmp (name, "aixcoff-rs6000") == 0
1530 || strcmp (name, "aix5coff64-rs6000") == 0)
1533 if (CONST_STRNEQ (name, "mach-o"))
1536 bfd_set_error (bfd_error_wrong_format);
1542 bfd_set_start_address
1545 bfd_boolean bfd_set_start_address (bfd *abfd, bfd_vma vma);
1548 Make @var{vma} the entry point of output BFD @var{abfd}.
1551 Returns <<TRUE>> on success, <<FALSE>> otherwise.
1555 bfd_set_start_address (bfd *abfd, bfd_vma vma)
1557 abfd->start_address = vma;
1566 unsigned int bfd_get_gp_size (bfd *abfd);
1569 Return the maximum size of objects to be optimized using the GP
1570 register under MIPS ECOFF. This is typically set by the <<-G>>
1571 argument to the compiler, assembler or linker.
1575 bfd_get_gp_size (bfd *abfd)
1577 if (abfd->format == bfd_object)
1579 if (abfd->xvec->flavour == bfd_target_ecoff_flavour)
1580 return ecoff_data (abfd)->gp_size;
1581 else if (abfd->xvec->flavour == bfd_target_elf_flavour)
1582 return elf_gp_size (abfd);
1592 void bfd_set_gp_size (bfd *abfd, unsigned int i);
1595 Set the maximum size of objects to be optimized using the GP
1596 register under ECOFF or MIPS ELF. This is typically set by
1597 the <<-G>> argument to the compiler, assembler or linker.
1601 bfd_set_gp_size (bfd *abfd, unsigned int i)
1603 /* Don't try to set GP size on an archive or core file! */
1604 if (abfd->format != bfd_object)
1607 if (abfd->xvec->flavour == bfd_target_ecoff_flavour)
1608 ecoff_data (abfd)->gp_size = i;
1609 else if (abfd->xvec->flavour == bfd_target_elf_flavour)
1610 elf_gp_size (abfd) = i;
1613 /* Get the GP value. This is an internal function used by some of the
1614 relocation special_function routines on targets which support a GP
1618 _bfd_get_gp_value (bfd *abfd)
1622 if (abfd->format != bfd_object)
1625 if (abfd->xvec->flavour == bfd_target_ecoff_flavour)
1626 return ecoff_data (abfd)->gp;
1627 else if (abfd->xvec->flavour == bfd_target_elf_flavour)
1628 return elf_gp (abfd);
1633 /* Set the GP value. */
1636 _bfd_set_gp_value (bfd *abfd, bfd_vma v)
1640 if (abfd->format != bfd_object)
1643 if (abfd->xvec->flavour == bfd_target_ecoff_flavour)
1644 ecoff_data (abfd)->gp = v;
1645 else if (abfd->xvec->flavour == bfd_target_elf_flavour)
1654 bfd_vma bfd_scan_vma (const char *string, const char **end, int base);
1657 Convert, like <<strtoul>>, a numerical expression
1658 @var{string} into a <<bfd_vma>> integer, and return that integer.
1659 (Though without as many bells and whistles as <<strtoul>>.)
1660 The expression is assumed to be unsigned (i.e., positive).
1661 If given a @var{base}, it is used as the base for conversion.
1662 A base of 0 causes the function to interpret the string
1663 in hex if a leading "0x" or "0X" is found, otherwise
1664 in octal if a leading zero is found, otherwise in decimal.
1666 If the value would overflow, the maximum <<bfd_vma>> value is
1671 bfd_scan_vma (const char *string, const char **end, int base)
1675 unsigned int cutlim;
1678 /* Let the host do it if possible. */
1679 if (sizeof (bfd_vma) <= sizeof (unsigned long))
1680 return strtoul (string, (char **) end, base);
1682 #if defined (HAVE_STRTOULL) && defined (HAVE_LONG_LONG)
1683 if (sizeof (bfd_vma) <= sizeof (unsigned long long))
1684 return strtoull (string, (char **) end, base);
1689 if (string[0] == '0')
1691 if ((string[1] == 'x') || (string[1] == 'X'))
1698 if ((base < 2) || (base > 36))
1703 && (string[1] == 'x' || string[1] == 'X')
1704 && ISXDIGIT (string[2]))
1709 cutoff = (~ (bfd_vma) 0) / (bfd_vma) base;
1710 cutlim = (~ (bfd_vma) 0) % (bfd_vma) base;
1718 if (ISDIGIT (digit))
1719 digit = digit - '0';
1720 else if (ISALPHA (digit))
1721 digit = TOUPPER (digit) - 'A' + 10;
1724 if (digit >= (unsigned int) base)
1726 if (value > cutoff || (value == cutoff && digit > cutlim))
1728 value = value * base + digit;
1733 value = ~ (bfd_vma) 0;
1743 bfd_copy_private_header_data
1746 bfd_boolean bfd_copy_private_header_data (bfd *ibfd, bfd *obfd);
1749 Copy private BFD header information from the BFD @var{ibfd} to the
1750 the BFD @var{obfd}. This copies information that may require
1751 sections to exist, but does not require symbol tables. Return
1752 <<true>> on success, <<false>> on error.
1753 Possible error returns are:
1755 o <<bfd_error_no_memory>> -
1756 Not enough memory exists to create private data for @var{obfd}.
1758 .#define bfd_copy_private_header_data(ibfd, obfd) \
1759 . BFD_SEND (obfd, _bfd_copy_private_header_data, \
1766 bfd_copy_private_bfd_data
1769 bfd_boolean bfd_copy_private_bfd_data (bfd *ibfd, bfd *obfd);
1772 Copy private BFD information from the BFD @var{ibfd} to the
1773 the BFD @var{obfd}. Return <<TRUE>> on success, <<FALSE>> on error.
1774 Possible error returns are:
1776 o <<bfd_error_no_memory>> -
1777 Not enough memory exists to create private data for @var{obfd}.
1779 .#define bfd_copy_private_bfd_data(ibfd, obfd) \
1780 . BFD_SEND (obfd, _bfd_copy_private_bfd_data, \
1787 bfd_set_private_flags
1790 bfd_boolean bfd_set_private_flags (bfd *abfd, flagword flags);
1793 Set private BFD flag information in the BFD @var{abfd}.
1794 Return <<TRUE>> on success, <<FALSE>> on error. Possible error
1797 o <<bfd_error_no_memory>> -
1798 Not enough memory exists to create private data for @var{obfd}.
1800 .#define bfd_set_private_flags(abfd, flags) \
1801 . BFD_SEND (abfd, _bfd_set_private_flags, (abfd, flags))
1810 The following functions exist but have not yet been documented.
1812 .#define bfd_sizeof_headers(abfd, info) \
1813 . BFD_SEND (abfd, _bfd_sizeof_headers, (abfd, info))
1815 .#define bfd_find_nearest_line(abfd, sec, syms, off, file, func, line) \
1816 . BFD_SEND (abfd, _bfd_find_nearest_line, \
1817 . (abfd, syms, sec, off, file, func, line, NULL))
1819 .#define bfd_find_nearest_line_discriminator(abfd, sec, syms, off, file, func, \
1821 . BFD_SEND (abfd, _bfd_find_nearest_line, \
1822 . (abfd, syms, sec, off, file, func, line, disc))
1824 .#define bfd_find_line(abfd, syms, sym, file, line) \
1825 . BFD_SEND (abfd, _bfd_find_line, \
1826 . (abfd, syms, sym, file, line))
1828 .#define bfd_find_inliner_info(abfd, file, func, line) \
1829 . BFD_SEND (abfd, _bfd_find_inliner_info, \
1830 . (abfd, file, func, line))
1832 .#define bfd_debug_info_start(abfd) \
1833 . BFD_SEND (abfd, _bfd_debug_info_start, (abfd))
1835 .#define bfd_debug_info_end(abfd) \
1836 . BFD_SEND (abfd, _bfd_debug_info_end, (abfd))
1838 .#define bfd_debug_info_accumulate(abfd, section) \
1839 . BFD_SEND (abfd, _bfd_debug_info_accumulate, (abfd, section))
1841 .#define bfd_stat_arch_elt(abfd, stat) \
1842 . BFD_SEND (abfd, _bfd_stat_arch_elt,(abfd, stat))
1844 .#define bfd_update_armap_timestamp(abfd) \
1845 . BFD_SEND (abfd, _bfd_update_armap_timestamp, (abfd))
1847 .#define bfd_set_arch_mach(abfd, arch, mach)\
1848 . BFD_SEND ( abfd, _bfd_set_arch_mach, (abfd, arch, mach))
1850 .#define bfd_relax_section(abfd, section, link_info, again) \
1851 . BFD_SEND (abfd, _bfd_relax_section, (abfd, section, link_info, again))
1853 .#define bfd_gc_sections(abfd, link_info) \
1854 . BFD_SEND (abfd, _bfd_gc_sections, (abfd, link_info))
1856 .#define bfd_lookup_section_flags(link_info, flag_info, section) \
1857 . BFD_SEND (abfd, _bfd_lookup_section_flags, (link_info, flag_info, section))
1859 .#define bfd_merge_sections(abfd, link_info) \
1860 . BFD_SEND (abfd, _bfd_merge_sections, (abfd, link_info))
1862 .#define bfd_is_group_section(abfd, sec) \
1863 . BFD_SEND (abfd, _bfd_is_group_section, (abfd, sec))
1865 .#define bfd_discard_group(abfd, sec) \
1866 . BFD_SEND (abfd, _bfd_discard_group, (abfd, sec))
1868 .#define bfd_link_hash_table_create(abfd) \
1869 . BFD_SEND (abfd, _bfd_link_hash_table_create, (abfd))
1871 .#define bfd_link_add_symbols(abfd, info) \
1872 . BFD_SEND (abfd, _bfd_link_add_symbols, (abfd, info))
1874 .#define bfd_link_just_syms(abfd, sec, info) \
1875 . BFD_SEND (abfd, _bfd_link_just_syms, (sec, info))
1877 .#define bfd_final_link(abfd, info) \
1878 . BFD_SEND (abfd, _bfd_final_link, (abfd, info))
1880 .#define bfd_free_cached_info(abfd) \
1881 . BFD_SEND (abfd, _bfd_free_cached_info, (abfd))
1883 .#define bfd_get_dynamic_symtab_upper_bound(abfd) \
1884 . BFD_SEND (abfd, _bfd_get_dynamic_symtab_upper_bound, (abfd))
1886 .#define bfd_print_private_bfd_data(abfd, file)\
1887 . BFD_SEND (abfd, _bfd_print_private_bfd_data, (abfd, file))
1889 .#define bfd_canonicalize_dynamic_symtab(abfd, asymbols) \
1890 . BFD_SEND (abfd, _bfd_canonicalize_dynamic_symtab, (abfd, asymbols))
1892 .#define bfd_get_synthetic_symtab(abfd, count, syms, dyncount, dynsyms, ret) \
1893 . BFD_SEND (abfd, _bfd_get_synthetic_symtab, (abfd, count, syms, \
1894 . dyncount, dynsyms, ret))
1896 .#define bfd_get_dynamic_reloc_upper_bound(abfd) \
1897 . BFD_SEND (abfd, _bfd_get_dynamic_reloc_upper_bound, (abfd))
1899 .#define bfd_canonicalize_dynamic_reloc(abfd, arels, asyms) \
1900 . BFD_SEND (abfd, _bfd_canonicalize_dynamic_reloc, (abfd, arels, asyms))
1902 .extern bfd_byte *bfd_get_relocated_section_contents
1903 . (bfd *, struct bfd_link_info *, struct bfd_link_order *, bfd_byte *,
1904 . bfd_boolean, asymbol **);
1910 bfd_get_relocated_section_contents (bfd *abfd,
1911 struct bfd_link_info *link_info,
1912 struct bfd_link_order *link_order,
1914 bfd_boolean relocatable,
1918 bfd_byte *(*fn) (bfd *, struct bfd_link_info *, struct bfd_link_order *,
1919 bfd_byte *, bfd_boolean, asymbol **);
1921 if (link_order->type == bfd_indirect_link_order)
1923 abfd2 = link_order->u.indirect.section->owner;
1930 fn = abfd2->xvec->_bfd_get_relocated_section_contents;
1932 return (*fn) (abfd, link_info, link_order, data, relocatable, symbols);
1935 /* Record information about an ELF program header. */
1938 bfd_record_phdr (bfd *abfd,
1940 bfd_boolean flags_valid,
1942 bfd_boolean at_valid,
1944 bfd_boolean includes_filehdr,
1945 bfd_boolean includes_phdrs,
1949 struct elf_segment_map *m, **pm;
1952 if (bfd_get_flavour (abfd) != bfd_target_elf_flavour)
1955 amt = sizeof (struct elf_segment_map);
1956 amt += ((bfd_size_type) count - 1) * sizeof (asection *);
1957 m = (struct elf_segment_map *) bfd_zalloc (abfd, amt);
1964 m->p_flags_valid = flags_valid;
1965 m->p_paddr_valid = at_valid;
1966 m->includes_filehdr = includes_filehdr;
1967 m->includes_phdrs = includes_phdrs;
1970 memcpy (m->sections, secs, count * sizeof (asection *));
1972 for (pm = &elf_seg_map (abfd); *pm != NULL; pm = &(*pm)->next)
1980 /* Return true iff this target is 32-bit. */
1985 if (bfd_get_flavour (abfd) == bfd_target_elf_flavour)
1987 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
1988 return bed->s->elfclass == ELFCLASS32;
1991 /* For non-ELF targets, use architecture information. */
1992 return bfd_arch_bits_per_address (abfd) <= 32;
1996 /* bfd_sprintf_vma and bfd_fprintf_vma display an address in the
1997 target's address size. */
2000 bfd_sprintf_vma (bfd *abfd ATTRIBUTE_UNUSED, char *buf, bfd_vma value)
2005 sprintf (buf, "%08lx", (unsigned long) value & 0xffffffff);
2009 sprintf_vma (buf, value);
2013 bfd_fprintf_vma (bfd *abfd ATTRIBUTE_UNUSED, void *stream, bfd_vma value)
2018 fprintf ((FILE *) stream, "%08lx", (unsigned long) value & 0xffffffff);
2022 fprintf_vma ((FILE *) stream, value);
2030 bfd_boolean bfd_alt_mach_code (bfd *abfd, int alternative);
2034 When more than one machine code number is available for the
2035 same machine type, this function can be used to switch between
2036 the preferred one (alternative == 0) and any others. Currently,
2037 only ELF supports this feature, with up to two alternate
2042 bfd_alt_mach_code (bfd *abfd, int alternative)
2044 if (bfd_get_flavour (abfd) == bfd_target_elf_flavour)
2048 switch (alternative)
2051 code = get_elf_backend_data (abfd)->elf_machine_code;
2055 code = get_elf_backend_data (abfd)->elf_machine_alt1;
2061 code = get_elf_backend_data (abfd)->elf_machine_alt2;
2070 elf_elfheader (abfd)->e_machine = code;
2080 bfd_emul_get_maxpagesize
2083 bfd_vma bfd_emul_get_maxpagesize (const char *);
2086 Returns the maximum page size, in bytes, as determined by
2090 Returns the maximum page size in bytes for ELF, 0 otherwise.
2094 bfd_emul_get_maxpagesize (const char *emul)
2096 const bfd_target *target;
2098 target = bfd_find_target (emul, NULL);
2100 && target->flavour == bfd_target_elf_flavour)
2101 return xvec_get_elf_backend_data (target)->maxpagesize;
2107 bfd_elf_set_pagesize (const bfd_target *target, bfd_vma size,
2108 int offset, const bfd_target *orig_target)
2110 if (target->flavour == bfd_target_elf_flavour)
2112 const struct elf_backend_data *bed;
2114 bed = xvec_get_elf_backend_data (target);
2115 *((bfd_vma *) ((char *) bed + offset)) = size;
2118 if (target->alternative_target
2119 && target->alternative_target != orig_target)
2120 bfd_elf_set_pagesize (target->alternative_target, size, offset,
2126 bfd_emul_set_maxpagesize
2129 void bfd_emul_set_maxpagesize (const char *, bfd_vma);
2132 For ELF, set the maximum page size for the emulation. It is
2133 a no-op for other formats.
2138 bfd_emul_set_maxpagesize (const char *emul, bfd_vma size)
2140 const bfd_target *target;
2142 target = bfd_find_target (emul, NULL);
2144 bfd_elf_set_pagesize (target, size,
2145 offsetof (struct elf_backend_data,
2146 maxpagesize), target);
2151 bfd_emul_get_commonpagesize
2154 bfd_vma bfd_emul_get_commonpagesize (const char *, bfd_boolean);
2157 Returns the common page size, in bytes, as determined by
2161 Returns the common page size in bytes for ELF, 0 otherwise.
2165 bfd_emul_get_commonpagesize (const char *emul, bfd_boolean relro)
2167 const bfd_target *target;
2169 target = bfd_find_target (emul, NULL);
2171 && target->flavour == bfd_target_elf_flavour)
2173 const struct elf_backend_data *bed;
2175 bed = xvec_get_elf_backend_data (target);
2177 return bed->relropagesize;
2179 return bed->commonpagesize;
2186 bfd_emul_set_commonpagesize
2189 void bfd_emul_set_commonpagesize (const char *, bfd_vma);
2192 For ELF, set the common page size for the emulation. It is
2193 a no-op for other formats.
2198 bfd_emul_set_commonpagesize (const char *emul, bfd_vma size)
2200 const bfd_target *target;
2202 target = bfd_find_target (emul, NULL);
2204 bfd_elf_set_pagesize (target, size,
2205 offsetof (struct elf_backend_data,
2206 commonpagesize), target);
2214 char *bfd_demangle (bfd *, const char *, int);
2217 Wrapper around cplus_demangle. Strips leading underscores and
2218 other such chars that would otherwise confuse the demangler.
2219 If passed a g++ v3 ABI mangled name, returns a buffer allocated
2220 with malloc holding the demangled name. Returns NULL otherwise
2221 and on memory alloc failure.
2225 bfd_demangle (bfd *abfd, const char *name, int options)
2228 const char *pre, *suf;
2230 bfd_boolean skip_lead;
2232 skip_lead = (abfd != NULL
2234 && bfd_get_symbol_leading_char (abfd) == *name);
2238 /* This is a hack for better error reporting on XCOFF, PowerPC64-ELF
2239 or the MS PE format. These formats have a number of leading '.'s
2240 on at least some symbols, so we remove all dots to avoid
2241 confusing the demangler. */
2243 while (*name == '.' || *name == '$')
2245 pre_len = name - pre;
2247 /* Strip off @plt and suchlike too. */
2249 suf = strchr (name, '@');
2252 alloc = (char *) bfd_malloc (suf - name + 1);
2255 memcpy (alloc, name, suf - name);
2256 alloc[suf - name] = '\0';
2260 res = cplus_demangle (name, options);
2269 size_t len = strlen (pre) + 1;
2270 alloc = (char *) bfd_malloc (len);
2273 memcpy (alloc, pre, len);
2279 /* Put back any prefix or suffix. */
2280 if (pre_len != 0 || suf != NULL)
2289 suf_len = strlen (suf) + 1;
2290 final = (char *) bfd_malloc (pre_len + len + suf_len);
2293 memcpy (final, pre, pre_len);
2294 memcpy (final + pre_len, res, len);
2295 memcpy (final + pre_len + len, suf, suf_len);
2306 bfd_update_compression_header
2309 void bfd_update_compression_header
2310 (bfd *abfd, bfd_byte *contents, asection *sec);
2313 Set the compression header at CONTENTS of SEC in ABFD and update
2314 elf_section_flags for compression.
2318 bfd_update_compression_header (bfd *abfd, bfd_byte *contents,
2321 if ((abfd->flags & BFD_COMPRESS) != 0)
2323 if (bfd_get_flavour (abfd) == bfd_target_elf_flavour)
2325 if ((abfd->flags & BFD_COMPRESS_GABI) != 0)
2327 const struct elf_backend_data *bed
2328 = get_elf_backend_data (abfd);
2330 /* Set the SHF_COMPRESSED bit. */
2331 elf_section_flags (sec) |= SHF_COMPRESSED;
2333 if (bed->s->elfclass == ELFCLASS32)
2335 Elf32_External_Chdr *echdr
2336 = (Elf32_External_Chdr *) contents;
2337 bfd_put_32 (abfd, ELFCOMPRESS_ZLIB, &echdr->ch_type);
2338 bfd_put_32 (abfd, sec->size, &echdr->ch_size);
2339 bfd_put_32 (abfd, 1 << sec->alignment_power,
2340 &echdr->ch_addralign);
2341 /* bfd_log2 (alignof (Elf32_Chdr)) */
2342 bfd_set_section_alignment (abfd, sec, 2);
2346 Elf64_External_Chdr *echdr
2347 = (Elf64_External_Chdr *) contents;
2348 bfd_put_32 (abfd, ELFCOMPRESS_ZLIB, &echdr->ch_type);
2349 bfd_put_32 (abfd, 0, &echdr->ch_reserved);
2350 bfd_put_64 (abfd, sec->size, &echdr->ch_size);
2351 bfd_put_64 (abfd, 1 << sec->alignment_power,
2352 &echdr->ch_addralign);
2353 /* bfd_log2 (alignof (Elf64_Chdr)) */
2354 bfd_set_section_alignment (abfd, sec, 3);
2359 /* Clear the SHF_COMPRESSED bit. */
2360 elf_section_flags (sec) &= ~SHF_COMPRESSED;
2362 /* Write the zlib header. It should be "ZLIB" followed by
2363 the uncompressed section size, 8 bytes in big-endian
2365 memcpy (contents, "ZLIB", 4);
2366 bfd_putb64 (sec->size, contents + 4);
2367 /* No way to keep the original alignment, just use 1 always. */
2368 bfd_set_section_alignment (abfd, sec, 0);
2378 bfd_check_compression_header
2381 bfd_boolean bfd_check_compression_header
2382 (bfd *abfd, bfd_byte *contents, asection *sec,
2383 bfd_size_type *uncompressed_size,
2384 unsigned int *uncompressed_alignment_power);
2387 Check the compression header at CONTENTS of SEC in ABFD and
2388 store the uncompressed size in UNCOMPRESSED_SIZE and the
2389 uncompressed data alignment in UNCOMPRESSED_ALIGNMENT_POWER
2390 if the compression header is valid.
2393 Return TRUE if the compression header is valid.
2397 bfd_check_compression_header (bfd *abfd, bfd_byte *contents,
2399 bfd_size_type *uncompressed_size,
2400 unsigned int *uncompressed_alignment_power)
2402 if (bfd_get_flavour (abfd) == bfd_target_elf_flavour
2403 && (elf_section_flags (sec) & SHF_COMPRESSED) != 0)
2405 Elf_Internal_Chdr chdr;
2406 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
2407 if (bed->s->elfclass == ELFCLASS32)
2409 Elf32_External_Chdr *echdr = (Elf32_External_Chdr *) contents;
2410 chdr.ch_type = bfd_get_32 (abfd, &echdr->ch_type);
2411 chdr.ch_size = bfd_get_32 (abfd, &echdr->ch_size);
2412 chdr.ch_addralign = bfd_get_32 (abfd, &echdr->ch_addralign);
2416 Elf64_External_Chdr *echdr = (Elf64_External_Chdr *) contents;
2417 chdr.ch_type = bfd_get_32 (abfd, &echdr->ch_type);
2418 chdr.ch_size = bfd_get_64 (abfd, &echdr->ch_size);
2419 chdr.ch_addralign = bfd_get_64 (abfd, &echdr->ch_addralign);
2421 if (chdr.ch_type == ELFCOMPRESS_ZLIB
2422 && chdr.ch_addralign == (1U << bfd_log2 (chdr.ch_addralign)))
2424 *uncompressed_size = chdr.ch_size;
2425 *uncompressed_alignment_power = bfd_log2 (chdr.ch_addralign);
2435 bfd_get_compression_header_size
2438 int bfd_get_compression_header_size (bfd *abfd, asection *sec);
2441 Return the size of the compression header of SEC in ABFD.
2444 Return the size of the compression header in bytes.
2448 bfd_get_compression_header_size (bfd *abfd, asection *sec)
2450 if (bfd_get_flavour (abfd) == bfd_target_elf_flavour)
2454 if (!(abfd->flags & BFD_COMPRESS_GABI))
2457 else if (!(elf_section_flags (sec) & SHF_COMPRESSED))
2460 if (get_elf_backend_data (abfd)->s->elfclass == ELFCLASS32)
2461 return sizeof (Elf32_External_Chdr);
2463 return sizeof (Elf64_External_Chdr);
2471 bfd_convert_section_size
2474 bfd_size_type bfd_convert_section_size
2475 (bfd *ibfd, asection *isec, bfd *obfd, bfd_size_type size);
2478 Convert the size @var{size} of the section @var{isec} in input
2479 BFD @var{ibfd} to the section size in output BFD @var{obfd}.
2483 bfd_convert_section_size (bfd *ibfd, sec_ptr isec, bfd *obfd,
2486 bfd_size_type hdr_size;
2488 /* Do nothing if either input or output aren't ELF. */
2489 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
2490 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
2493 /* Do nothing if ELF classes of input and output are the same. */
2494 if (get_elf_backend_data (ibfd)->s->elfclass
2495 == get_elf_backend_data (obfd)->s->elfclass)
2498 /* Convert GNU property size. */
2499 if (CONST_STRNEQ (isec->name, NOTE_GNU_PROPERTY_SECTION_NAME))
2500 return _bfd_elf_convert_gnu_property_size (ibfd, obfd);
2502 /* Do nothing if input file will be decompressed. */
2503 if ((ibfd->flags & BFD_DECOMPRESS))
2506 /* Do nothing if the input section isn't a SHF_COMPRESSED section. */
2507 hdr_size = bfd_get_compression_header_size (ibfd, isec);
2511 /* Adjust the size of the output SHF_COMPRESSED section. */
2512 if (hdr_size == sizeof (Elf32_External_Chdr))
2513 return (size - sizeof (Elf32_External_Chdr)
2514 + sizeof (Elf64_External_Chdr));
2516 return (size - sizeof (Elf64_External_Chdr)
2517 + sizeof (Elf32_External_Chdr));
2522 bfd_convert_section_contents
2525 bfd_boolean bfd_convert_section_contents
2526 (bfd *ibfd, asection *isec, bfd *obfd,
2527 bfd_byte **ptr, bfd_size_type *ptr_size);
2530 Convert the contents, stored in @var{*ptr}, of the section
2531 @var{isec} in input BFD @var{ibfd} to output BFD @var{obfd}
2532 if needed. The original buffer pointed to by @var{*ptr} may
2533 be freed and @var{*ptr} is returned with memory malloc'd by this
2534 function, and the new size written to @var{ptr_size}.
2538 bfd_convert_section_contents (bfd *ibfd, sec_ptr isec, bfd *obfd,
2539 bfd_byte **ptr, bfd_size_type *ptr_size)
2542 bfd_size_type ihdr_size, ohdr_size, size;
2543 Elf_Internal_Chdr chdr;
2544 bfd_boolean use_memmove;
2546 /* Do nothing if either input or output aren't ELF. */
2547 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
2548 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
2551 /* Do nothing if ELF classes of input and output are the same. */
2552 if (get_elf_backend_data (ibfd)->s->elfclass
2553 == get_elf_backend_data (obfd)->s->elfclass)
2556 /* Convert GNU properties. */
2557 if (CONST_STRNEQ (isec->name, NOTE_GNU_PROPERTY_SECTION_NAME))
2558 return _bfd_elf_convert_gnu_properties (ibfd, isec, obfd, ptr,
2561 /* Do nothing if input file will be decompressed. */
2562 if ((ibfd->flags & BFD_DECOMPRESS))
2565 /* Do nothing if the input section isn't a SHF_COMPRESSED section. */
2566 ihdr_size = bfd_get_compression_header_size (ibfd, isec);
2572 /* Convert the contents of the input SHF_COMPRESSED section to
2573 output. Get the input compression header and the size of the
2574 output compression header. */
2575 if (ihdr_size == sizeof (Elf32_External_Chdr))
2577 Elf32_External_Chdr *echdr = (Elf32_External_Chdr *) contents;
2578 chdr.ch_type = bfd_get_32 (ibfd, &echdr->ch_type);
2579 chdr.ch_size = bfd_get_32 (ibfd, &echdr->ch_size);
2580 chdr.ch_addralign = bfd_get_32 (ibfd, &echdr->ch_addralign);
2582 ohdr_size = sizeof (Elf64_External_Chdr);
2584 use_memmove = FALSE;
2588 Elf64_External_Chdr *echdr = (Elf64_External_Chdr *) contents;
2589 chdr.ch_type = bfd_get_32 (ibfd, &echdr->ch_type);
2590 chdr.ch_size = bfd_get_64 (ibfd, &echdr->ch_size);
2591 chdr.ch_addralign = bfd_get_64 (ibfd, &echdr->ch_addralign);
2593 ohdr_size = sizeof (Elf32_External_Chdr);
2597 size = bfd_get_section_size (isec) - ihdr_size + ohdr_size;
2600 contents = (bfd_byte *) bfd_malloc (size);
2601 if (contents == NULL)
2605 /* Write out the output compression header. */
2606 if (ohdr_size == sizeof (Elf32_External_Chdr))
2608 Elf32_External_Chdr *echdr = (Elf32_External_Chdr *) contents;
2609 bfd_put_32 (obfd, ELFCOMPRESS_ZLIB, &echdr->ch_type);
2610 bfd_put_32 (obfd, chdr.ch_size, &echdr->ch_size);
2611 bfd_put_32 (obfd, chdr.ch_addralign, &echdr->ch_addralign);
2615 Elf64_External_Chdr *echdr = (Elf64_External_Chdr *) contents;
2616 bfd_put_32 (obfd, ELFCOMPRESS_ZLIB, &echdr->ch_type);
2617 bfd_put_32 (obfd, 0, &echdr->ch_reserved);
2618 bfd_put_64 (obfd, chdr.ch_size, &echdr->ch_size);
2619 bfd_put_64 (obfd, chdr.ch_addralign, &echdr->ch_addralign);
2622 /* Copy the compressed contents. */
2624 memmove (contents + ohdr_size, *ptr + ihdr_size, size - ohdr_size);
2627 memcpy (contents + ohdr_size, *ptr + ihdr_size, size - ohdr_size);