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 only required symbols should be added in the link hash table for
224 . this object. Used by VMS linkers. *}
225 . unsigned int selective_search : 1;
227 . {* Set if this is the linker output BFD. *}
228 . unsigned int is_linker_output : 1;
230 . {* Set if this is the linker input BFD. *}
231 . unsigned int is_linker_input : 1;
233 . {* If this is an input for a compiler plug-in library. *}
234 . ENUM_BITFIELD (bfd_plugin_format) plugin_format : 2;
236 . {* Set if this is a plugin output file. *}
237 . unsigned int lto_output : 1;
239 . {* Set to dummy BFD created when claimed by a compiler plug-in
241 . bfd *plugin_dummy_bfd;
243 . {* Currently my_archive is tested before adding origin to
244 . anything. I believe that this can become always an add of
245 . origin, with origin set to 0 for non archive files. *}
248 . {* The origin in the archive of the proxy entry. This will
249 . normally be the same as origin, except for thin archives,
250 . when it will contain the current offset of the proxy in the
251 . thin archive rather than the offset of the bfd in its actual
253 . ufile_ptr proxy_origin;
255 . {* A hash table for section names. *}
256 . struct bfd_hash_table section_htab;
258 . {* Pointer to linked list of sections. *}
259 . struct bfd_section *sections;
261 . {* The last section on the section list. *}
262 . struct bfd_section *section_last;
264 . {* The number of sections. *}
265 . unsigned int section_count;
267 . {* A field used by _bfd_generic_link_add_archive_symbols. This will
268 . be used only for archive elements. *}
271 . {* Stuff only useful for object files:
272 . The start address. *}
273 . bfd_vma start_address;
275 . {* Symbol table for output BFD (with symcount entries).
276 . Also used by the linker to cache input BFD symbols. *}
277 . struct bfd_symbol **outsymbols;
279 . {* Used for input and output. *}
280 . unsigned int symcount;
282 . {* Used for slurped dynamic symbol tables. *}
283 . unsigned int dynsymcount;
285 . {* Pointer to structure which contains architecture information. *}
286 . const struct bfd_arch_info *arch_info;
288 . {* Stuff only useful for archives. *}
290 . struct bfd *my_archive; {* The containing archive BFD. *}
291 . struct bfd *archive_next; {* The next BFD in the archive. *}
292 . struct bfd *archive_head; {* The first BFD in the archive. *}
293 . struct bfd *nested_archives; {* List of nested archive in a flattened
297 . {* For input BFDs, a chain of BFDs involved in a link. *}
299 . {* For output BFD, the linker hash table. *}
300 . struct bfd_link_hash_table *hash;
303 . {* Used by the back end to hold private data. *}
306 . struct aout_data_struct *aout_data;
307 . struct artdata *aout_ar_data;
308 . struct coff_tdata *coff_obj_data;
309 . struct pe_tdata *pe_obj_data;
310 . struct xcoff_tdata *xcoff_obj_data;
311 . struct ecoff_tdata *ecoff_obj_data;
312 . struct srec_data_struct *srec_data;
313 . struct verilog_data_struct *verilog_data;
314 . struct ihex_data_struct *ihex_data;
315 . struct tekhex_data_struct *tekhex_data;
316 . struct elf_obj_tdata *elf_obj_data;
317 . struct mmo_data_struct *mmo_data;
318 . struct sun_core_struct *sun_core_data;
319 . struct sco5_core_struct *sco5_core_data;
320 . struct trad_core_struct *trad_core_data;
321 . struct som_data_struct *som_data;
322 . struct hpux_core_struct *hpux_core_data;
323 . struct hppabsd_core_struct *hppabsd_core_data;
324 . struct sgi_core_struct *sgi_core_data;
325 . struct lynx_core_struct *lynx_core_data;
326 . struct osf_core_struct *osf_core_data;
327 . struct cisco_core_struct *cisco_core_data;
328 . struct versados_data_struct *versados_data;
329 . struct netbsd_core_struct *netbsd_core_data;
330 . struct mach_o_data_struct *mach_o_data;
331 . struct mach_o_fat_data_struct *mach_o_fat_data;
332 . struct plugin_data_struct *plugin_data;
333 . struct bfd_pef_data_struct *pef_data;
334 . struct bfd_pef_xlib_data_struct *pef_xlib_data;
335 . struct bfd_sym_data_struct *sym_data;
340 . {* Used by the application to hold private data. *}
343 . {* Where all the allocated stuff under this BFD goes. This is a
344 . struct objalloc *, but we use void * to avoid requiring the inclusion
348 . {* For input BFDs, the build ID, if the object has one. *}
349 . const struct bfd_build_id *build_id;
352 .{* See note beside bfd_set_section_userdata. *}
353 .static inline bfd_boolean
354 .bfd_set_cacheable (bfd * abfd, bfd_boolean val)
356 . abfd->cacheable = val;
366 #include "libiberty.h"
367 #include "demangle.h"
368 #include "safe-ctype.h"
371 #include "coff/internal.h"
372 #include "coff/sym.h"
374 #include "libecoff.h"
379 #define EXIT_FAILURE 1
383 /* provide storage for subsystem, stack and heap data which may have been
384 passed in on the command line. Ld puts this data into a bfd_link_info
385 struct which ultimately gets passed in to the bfd. When it arrives, copy
386 it to the following struct so that the data will be available in coffcode.h
387 where it is needed. The typedef's used are defined in bfd.h */
391 Error reporting, Miscellaneous, typedef bfd, BFD front end
396 Most BFD functions return nonzero on success (check their
397 individual documentation for precise semantics). On an error,
398 they call <<bfd_set_error>> to set an error condition that callers
399 can check by calling <<bfd_get_error>>.
400 If that returns <<bfd_error_system_call>>, then check
403 The easiest way to report a BFD error to the user is to
407 Type <<bfd_error_type>>
409 The values returned by <<bfd_get_error>> are defined by the
410 enumerated type <<bfd_error_type>>.
414 .typedef enum bfd_error
416 . bfd_error_no_error = 0,
417 . bfd_error_system_call,
418 . bfd_error_invalid_target,
419 . bfd_error_wrong_format,
420 . bfd_error_wrong_object_format,
421 . bfd_error_invalid_operation,
422 . bfd_error_no_memory,
423 . bfd_error_no_symbols,
424 . bfd_error_no_armap,
425 . bfd_error_no_more_archived_files,
426 . bfd_error_malformed_archive,
427 . bfd_error_missing_dso,
428 . bfd_error_file_not_recognized,
429 . bfd_error_file_ambiguously_recognized,
430 . bfd_error_no_contents,
431 . bfd_error_nonrepresentable_section,
432 . bfd_error_no_debug_section,
433 . bfd_error_bad_value,
434 . bfd_error_file_truncated,
435 . bfd_error_file_too_big,
436 . bfd_error_on_input,
437 . bfd_error_invalid_error_code
443 static bfd_error_type bfd_error = bfd_error_no_error;
444 static bfd *input_bfd = NULL;
445 static bfd_error_type input_error = bfd_error_no_error;
447 const char *const bfd_errmsgs[] =
450 N_("system call error"),
451 N_("invalid bfd target"),
452 N_("file in wrong format"),
453 N_("archive object file in wrong format"),
454 N_("invalid operation"),
455 N_("memory exhausted"),
457 N_("archive has no index; run ranlib to add one"),
458 N_("no more archived files"),
459 N_("malformed archive"),
460 N_("DSO missing from command line"),
461 N_("file format not recognized"),
462 N_("file format is ambiguous"),
463 N_("section has no contents"),
464 N_("nonrepresentable section on output"),
465 N_("symbol needs debug section which does not exist"),
467 N_("file truncated"),
469 N_("error reading %s: %s"),
470 N_("#<invalid error code>")
478 bfd_error_type bfd_get_error (void);
481 Return the current BFD error condition.
495 void bfd_set_error (bfd_error_type error_tag);
498 Set the BFD error condition to be @var{error_tag}.
500 @var{error_tag} must not be bfd_error_on_input. Use
501 bfd_set_input_error for input errors instead.
505 bfd_set_error (bfd_error_type error_tag)
507 bfd_error = error_tag;
508 if (bfd_error >= bfd_error_on_input)
517 void bfd_set_input_error (bfd *input, bfd_error_type error_tag);
521 Set the BFD error condition to be bfd_error_on_input.
522 @var{input} is the input bfd where the error occurred, and
523 @var{error_tag} the bfd_error_type error.
527 bfd_set_input_error (bfd *input, bfd_error_type error_tag)
529 /* This is an error that occurred during bfd_close when writing an
530 archive, but on one of the input files. */
531 bfd_error = bfd_error_on_input;
533 input_error = error_tag;
534 if (input_error >= bfd_error_on_input)
543 const char *bfd_errmsg (bfd_error_type error_tag);
546 Return a string describing the error @var{error_tag}, or
547 the system error if @var{error_tag} is <<bfd_error_system_call>>.
551 bfd_errmsg (bfd_error_type error_tag)
556 if (error_tag == bfd_error_on_input)
559 const char *msg = bfd_errmsg (input_error);
561 if (asprintf (&buf, _(bfd_errmsgs [error_tag]), input_bfd->filename, msg)
565 /* Ick, what to do on out of memory? */
569 if (error_tag == bfd_error_system_call)
570 return xstrerror (errno);
572 if (error_tag > bfd_error_invalid_error_code)
573 error_tag = bfd_error_invalid_error_code; /* sanity check */
575 return _(bfd_errmsgs [error_tag]);
583 void bfd_perror (const char *message);
586 Print to the standard error stream a string describing the
587 last BFD error that occurred, or the last system error if
588 the last BFD error was a system call failure. If @var{message}
589 is non-NULL and non-empty, the error string printed is preceded
590 by @var{message}, a colon, and a space. It is followed by a newline.
594 bfd_perror (const char *message)
597 if (message == NULL || *message == '\0')
598 fprintf (stderr, "%s\n", bfd_errmsg (bfd_get_error ()));
600 fprintf (stderr, "%s: %s\n", message, bfd_errmsg (bfd_get_error ()));
608 Some BFD functions want to print messages describing the
609 problem. They call a BFD error handler function. This
610 function may be overridden by the program.
612 The BFD error handler acts like vprintf.
616 .typedef void (*bfd_error_handler_type) (const char *, va_list);
620 /* The program name used when printing BFD error messages. */
622 static const char *_bfd_error_program_name;
624 /* Support for positional parameters. */
626 union _bfd_doprnt_args
646 /* This macro and _bfd_doprnt taken from libiberty _doprnt.c, tidied a
647 little and extended to handle '%pA', '%pB' and positional parameters. */
649 #define PRINT_TYPE(TYPE, FIELD) \
652 TYPE value = (TYPE) args[arg_no].FIELD; \
653 result = fprintf (stream, specifier, value); \
657 _bfd_doprnt (FILE *stream, const char *format, union _bfd_doprnt_args *args)
659 const char *ptr = format;
661 int total_printed = 0;
662 unsigned int arg_count = 0;
670 /* While we have regular characters, print them. */
671 char *end = strchr (ptr, '%');
673 result = fprintf (stream, "%.*s", (int) (end - ptr), ptr);
675 result = fprintf (stream, "%s", ptr);
678 else if (ptr[1] == '%')
686 /* We have a format specifier! */
687 char *sptr = specifier;
688 int wide_width = 0, short_width = 0;
691 /* Copy the % and move forward. */
694 /* Check for a positional parameter. */
696 if (*ptr != '0' && ISDIGIT (*ptr) && ptr[1] == '$')
702 /* Move past flags. */
703 while (strchr ("-+ #0'I", *ptr))
709 unsigned int arg_index;
712 arg_index = arg_count;
713 if (*ptr != '0' && ISDIGIT (*ptr) && ptr[1] == '$')
715 arg_index = *ptr - '1';
718 value = abs (args[arg_index].i);
720 sptr += sprintf (sptr, "%d", value);
723 /* Handle explicit numeric value. */
724 while (ISDIGIT (*ptr))
730 /* Copy and go past the period. */
735 unsigned int arg_index;
738 arg_index = arg_count;
739 if (*ptr != '0' && ISDIGIT (*ptr) && ptr[1] == '$')
741 arg_index = *ptr - '1';
744 value = abs (args[arg_index].i);
746 sptr += sprintf (sptr, "%d", value);
749 /* Handle explicit numeric value. */
750 while (ISDIGIT (*ptr))
753 while (strchr ("hlL", *ptr))
772 /* Copy the type specifier, and NULL terminate. */
775 if ((int) arg_no < 0)
788 /* Short values are promoted to int, so just copy it
789 as an int and trust the C library printf to cast it
790 to the right width. */
801 PRINT_TYPE (long, l);
805 #if defined (__MSVCRT__)
812 #if defined (__GNUC__) || defined (HAVE_LONG_LONG)
813 PRINT_TYPE (long long, ll);
815 /* Fake it and hope for the best. */
816 PRINT_TYPE (long, l);
830 PRINT_TYPE (double, d);
833 #if defined (__GNUC__) || defined (HAVE_LONG_DOUBLE)
834 PRINT_TYPE (long double, ld);
836 /* Fake it and hope for the best. */
837 PRINT_TYPE (double, d);
843 PRINT_TYPE (char *, p);
850 const char *group = NULL;
851 struct coff_comdat_info *ci;
854 sec = (asection *) args[arg_no].p;
856 /* Invoking %pA with a null section pointer is an
861 && bfd_get_flavour (abfd) == bfd_target_elf_flavour
862 && elf_next_in_group (sec) != NULL
863 && (sec->flags & SEC_GROUP) == 0)
864 group = elf_group_name (sec);
865 else if (abfd != NULL
866 && bfd_get_flavour (abfd) == bfd_target_coff_flavour
867 && (ci = bfd_coff_get_comdat_section (sec->owner,
871 result = fprintf (stream, "%s[%s]", sec->name, group);
873 result = fprintf (stream, "%s", sec->name);
875 else if (*ptr == 'B')
880 abfd = (bfd *) args[arg_no].p;
882 /* Invoking %pB with a null bfd pointer is an
885 else if (abfd->my_archive
886 && !bfd_is_thin_archive (abfd->my_archive))
887 result = fprintf (stream, "%s(%s)",
888 abfd->my_archive->filename,
891 result = fprintf (stream, "%s", abfd->filename);
894 PRINT_TYPE (void *, p);
903 total_printed += result;
906 return total_printed;
909 /* First pass over FORMAT to gather ARGS. Returns number of args. */
912 _bfd_doprnt_scan (const char *format, union _bfd_doprnt_args *args)
914 const char *ptr = format;
915 unsigned int arg_count = 0;
921 ptr = strchr (ptr, '%');
925 else if (ptr[1] == '%')
929 int wide_width = 0, short_width = 0;
935 /* Check for a positional parameter. */
937 if (*ptr != '0' && ISDIGIT (*ptr) && ptr[1] == '$')
943 /* Move past flags. */
944 while (strchr ("-+ #0'I", *ptr))
949 unsigned int arg_index;
952 arg_index = arg_count;
953 if (*ptr != '0' && ISDIGIT (*ptr) && ptr[1] == '$')
955 arg_index = *ptr - '1';
960 args[arg_index].type = Int;
964 /* Handle explicit numeric value. */
965 while (ISDIGIT (*ptr))
974 unsigned int arg_index;
977 arg_index = arg_count;
978 if (*ptr != '0' && ISDIGIT (*ptr) && ptr[1] == '$')
980 arg_index = *ptr - '1';
985 args[arg_index].type = Int;
989 /* Handle explicit numeric value. */
990 while (ISDIGIT (*ptr))
993 while (strchr ("hlL", *ptr))
1013 if ((int) arg_no < 0)
1041 #if defined (__GNUC__) || defined (HAVE_LONG_LONG)
1042 arg_type = LongLong;
1057 if (wide_width == 0)
1061 #if defined (__GNUC__) || defined (HAVE_LONG_DOUBLE)
1062 arg_type = LongDouble;
1073 if (*ptr == 'A' || *ptr == 'B')
1083 args[arg_no].type = arg_type;
1092 error_handler_internal (const char *fmt, va_list ap)
1094 unsigned int i, arg_count;
1095 union _bfd_doprnt_args args[9];
1097 for (i = 0; i < sizeof (args) / sizeof (args[0]); i++)
1100 arg_count = _bfd_doprnt_scan (fmt, args);
1101 for (i = 0; i < arg_count; i++)
1103 switch (args[i].type)
1106 args[i].i = va_arg (ap, int);
1109 args[i].l = va_arg (ap, long);
1112 args[i].ll = va_arg (ap, long long);
1115 args[i].d = va_arg (ap, double);
1118 args[i].ld = va_arg (ap, long double);
1121 args[i].p = va_arg (ap, void *);
1128 /* PR 4992: Don't interrupt output being sent to stdout. */
1131 if (_bfd_error_program_name != NULL)
1132 fprintf (stderr, "%s: ", _bfd_error_program_name);
1134 fprintf (stderr, "BFD: ");
1136 _bfd_doprnt (stderr, fmt, args);
1138 /* On AIX, putc is implemented as a macro that triggers a -Wunused-value
1139 warning, so use the fputc function to avoid it. */
1140 fputc ('\n', stderr);
1144 /* This is a function pointer to the routine which should handle BFD
1145 error messages. It is called when a BFD routine encounters an
1146 error for which it wants to print a message. Going through a
1147 function pointer permits a program linked against BFD to intercept
1148 the messages and deal with them itself. */
1150 static bfd_error_handler_type _bfd_error_internal = error_handler_internal;
1157 void _bfd_error_handler (const char *fmt, ...) ATTRIBUTE_PRINTF_1;
1160 This is the default routine to handle BFD error messages.
1161 Like fprintf (stderr, ...), but also handles some extra format
1164 %pA section name from section. For group components, prints
1166 %pB file name from bfd. For archive components, prints
1169 Beware: Only supports a maximum of 9 format arguments.
1173 _bfd_error_handler (const char *fmt, ...)
1178 _bfd_error_internal (fmt, ap);
1184 bfd_set_error_handler
1187 bfd_error_handler_type bfd_set_error_handler (bfd_error_handler_type);
1190 Set the BFD error handler function. Returns the previous
1194 bfd_error_handler_type
1195 bfd_set_error_handler (bfd_error_handler_type pnew)
1197 bfd_error_handler_type pold;
1199 pold = _bfd_error_internal;
1200 _bfd_error_internal = pnew;
1206 bfd_set_error_program_name
1209 void bfd_set_error_program_name (const char *);
1212 Set the program name to use when printing a BFD error. This
1213 is printed before the error message followed by a colon and
1214 space. The string must not be changed after it is passed to
1219 bfd_set_error_program_name (const char *name)
1221 _bfd_error_program_name = name;
1228 If BFD finds an internal inconsistency, the bfd assert
1229 handler is called with information on the BFD version, BFD
1230 source file and line. If this happens, most programs linked
1231 against BFD are expected to want to exit with an error, or mark
1232 the current BFD operation as failed, so it is recommended to
1233 override the default handler, which just calls
1234 _bfd_error_handler and continues.
1238 .typedef void (*bfd_assert_handler_type) (const char *bfd_formatmsg,
1239 . const char *bfd_version,
1240 . const char *bfd_file,
1245 /* Note the use of bfd_ prefix on the parameter names above: we want to
1246 show which one is the message and which is the version by naming the
1247 parameters, but avoid polluting the program-using-bfd namespace as
1248 the typedef is visible in the exported headers that the program
1249 includes. Below, it's just for consistency. */
1252 _bfd_default_assert_handler (const char *bfd_formatmsg,
1253 const char *bfd_version,
1254 const char *bfd_file,
1258 _bfd_error_handler (bfd_formatmsg, bfd_version, bfd_file, bfd_line);
1261 /* Similar to _bfd_error_handler, a program can decide to exit on an
1262 internal BFD error. We use a non-variadic type to simplify passing
1263 on parameters to other functions, e.g. _bfd_error_handler. */
1265 static bfd_assert_handler_type _bfd_assert_handler = _bfd_default_assert_handler;
1269 bfd_set_assert_handler
1272 bfd_assert_handler_type bfd_set_assert_handler (bfd_assert_handler_type);
1275 Set the BFD assert handler function. Returns the previous
1279 bfd_assert_handler_type
1280 bfd_set_assert_handler (bfd_assert_handler_type pnew)
1282 bfd_assert_handler_type pold;
1284 pold = _bfd_assert_handler;
1285 _bfd_assert_handler = pnew;
1291 Miscellaneous, Memory Usage, Error reporting, BFD front end
1297 Miscellaneous functions
1302 bfd_get_reloc_upper_bound
1305 long bfd_get_reloc_upper_bound (bfd *abfd, asection *sect);
1308 Return the number of bytes required to store the
1309 relocation information associated with section @var{sect}
1310 attached to bfd @var{abfd}. If an error occurs, return -1.
1315 bfd_get_reloc_upper_bound (bfd *abfd, sec_ptr asect)
1317 if (abfd->format != bfd_object)
1319 bfd_set_error (bfd_error_invalid_operation);
1323 return BFD_SEND (abfd, _get_reloc_upper_bound, (abfd, asect));
1328 bfd_canonicalize_reloc
1331 long bfd_canonicalize_reloc
1332 (bfd *abfd, asection *sec, arelent **loc, asymbol **syms);
1335 Call the back end associated with the open BFD
1336 @var{abfd} and translate the external form of the relocation
1337 information attached to @var{sec} into the internal canonical
1338 form. Place the table into memory at @var{loc}, which has
1339 been preallocated, usually by a call to
1340 <<bfd_get_reloc_upper_bound>>. Returns the number of relocs, or
1343 The @var{syms} table is also needed for horrible internal magic
1348 bfd_canonicalize_reloc (bfd *abfd,
1353 if (abfd->format != bfd_object)
1355 bfd_set_error (bfd_error_invalid_operation);
1359 return BFD_SEND (abfd, _bfd_canonicalize_reloc,
1360 (abfd, asect, location, symbols));
1369 (bfd *abfd, asection *sec, arelent **rel, unsigned int count);
1372 Set the relocation pointer and count within
1373 section @var{sec} to the values @var{rel} and @var{count}.
1374 The argument @var{abfd} is ignored.
1376 .#define bfd_set_reloc(abfd, asect, location, count) \
1377 . BFD_SEND (abfd, _bfd_set_reloc, (abfd, asect, location, count))
1385 bfd_boolean bfd_set_file_flags (bfd *abfd, flagword flags);
1388 Set the flag word in the BFD @var{abfd} to the value @var{flags}.
1390 Possible errors are:
1391 o <<bfd_error_wrong_format>> - The target bfd was not of object format.
1392 o <<bfd_error_invalid_operation>> - The target bfd was open for reading.
1393 o <<bfd_error_invalid_operation>> -
1394 The flag word contained a bit which was not applicable to the
1395 type of file. E.g., an attempt was made to set the <<D_PAGED>> bit
1396 on a BFD format which does not support demand paging.
1401 bfd_set_file_flags (bfd *abfd, flagword flags)
1403 if (abfd->format != bfd_object)
1405 bfd_set_error (bfd_error_wrong_format);
1409 if (bfd_read_p (abfd))
1411 bfd_set_error (bfd_error_invalid_operation);
1415 bfd_get_file_flags (abfd) = flags;
1416 if ((flags & bfd_applicable_file_flags (abfd)) != flags)
1418 bfd_set_error (bfd_error_invalid_operation);
1426 bfd_assert (const char *file, int line)
1428 /* xgettext:c-format */
1429 (*_bfd_assert_handler) (_("BFD %s assertion fail %s:%d"),
1430 BFD_VERSION_STRING, file, line);
1433 /* A more or less friendly abort message. In libbfd.h abort is
1434 defined to call this function. */
1437 _bfd_abort (const char *file, int line, const char *fn)
1441 /* xgettext:c-format */
1442 (_("BFD %s internal error, aborting at %s:%d in %s\n"),
1443 BFD_VERSION_STRING, file, line, fn);
1446 /* xgettext:c-format */
1447 (_("BFD %s internal error, aborting at %s:%d\n"),
1448 BFD_VERSION_STRING, file, line);
1449 _bfd_error_handler (_("Please report this bug.\n"));
1450 _exit (EXIT_FAILURE);
1458 int bfd_get_arch_size (bfd *abfd);
1461 Returns the normalized architecture address size, in bits, as
1462 determined by the object file's format. By normalized, we mean
1463 either 32 or 64. For ELF, this information is included in the
1464 header. Use bfd_arch_bits_per_address for number of bits in
1465 the architecture address.
1468 Returns the arch size in bits if known, <<-1>> otherwise.
1472 bfd_get_arch_size (bfd *abfd)
1474 if (abfd->xvec->flavour == bfd_target_elf_flavour)
1475 return get_elf_backend_data (abfd)->s->arch_size;
1477 return bfd_arch_bits_per_address (abfd) > 32 ? 64 : 32;
1482 bfd_get_sign_extend_vma
1485 int bfd_get_sign_extend_vma (bfd *abfd);
1488 Indicates if the target architecture "naturally" sign extends
1489 an address. Some architectures implicitly sign extend address
1490 values when they are converted to types larger than the size
1491 of an address. For instance, bfd_get_start_address() will
1492 return an address sign extended to fill a bfd_vma when this is
1496 Returns <<1>> if the target architecture is known to sign
1497 extend addresses, <<0>> if the target architecture is known to
1498 not sign extend addresses, and <<-1>> otherwise.
1502 bfd_get_sign_extend_vma (bfd *abfd)
1506 if (bfd_get_flavour (abfd) == bfd_target_elf_flavour)
1507 return get_elf_backend_data (abfd)->sign_extend_vma;
1509 name = bfd_get_target (abfd);
1511 /* Return a proper value for DJGPP & PE COFF.
1512 This function is required for DWARF2 support, but there is
1513 no place to store this information in the COFF back end.
1514 Should enough other COFF targets add support for DWARF2,
1515 a place will have to be found. Until then, this hack will do. */
1516 if (CONST_STRNEQ (name, "coff-go32")
1517 || strcmp (name, "pe-i386") == 0
1518 || strcmp (name, "pei-i386") == 0
1519 || strcmp (name, "pe-x86-64") == 0
1520 || strcmp (name, "pei-x86-64") == 0
1521 || strcmp (name, "pe-arm-wince-little") == 0
1522 || strcmp (name, "pei-arm-wince-little") == 0
1523 || strcmp (name, "aixcoff-rs6000") == 0
1524 || strcmp (name, "aix5coff64-rs6000") == 0)
1527 if (CONST_STRNEQ (name, "mach-o"))
1530 bfd_set_error (bfd_error_wrong_format);
1536 bfd_set_start_address
1539 bfd_boolean bfd_set_start_address (bfd *abfd, bfd_vma vma);
1542 Make @var{vma} the entry point of output BFD @var{abfd}.
1545 Returns <<TRUE>> on success, <<FALSE>> otherwise.
1549 bfd_set_start_address (bfd *abfd, bfd_vma vma)
1551 abfd->start_address = vma;
1560 unsigned int bfd_get_gp_size (bfd *abfd);
1563 Return the maximum size of objects to be optimized using the GP
1564 register under MIPS ECOFF. This is typically set by the <<-G>>
1565 argument to the compiler, assembler or linker.
1569 bfd_get_gp_size (bfd *abfd)
1571 if (abfd->format == bfd_object)
1573 if (abfd->xvec->flavour == bfd_target_ecoff_flavour)
1574 return ecoff_data (abfd)->gp_size;
1575 else if (abfd->xvec->flavour == bfd_target_elf_flavour)
1576 return elf_gp_size (abfd);
1586 void bfd_set_gp_size (bfd *abfd, unsigned int i);
1589 Set the maximum size of objects to be optimized using the GP
1590 register under ECOFF or MIPS ELF. This is typically set by
1591 the <<-G>> argument to the compiler, assembler or linker.
1595 bfd_set_gp_size (bfd *abfd, unsigned int i)
1597 /* Don't try to set GP size on an archive or core file! */
1598 if (abfd->format != bfd_object)
1601 if (abfd->xvec->flavour == bfd_target_ecoff_flavour)
1602 ecoff_data (abfd)->gp_size = i;
1603 else if (abfd->xvec->flavour == bfd_target_elf_flavour)
1604 elf_gp_size (abfd) = i;
1607 /* Get the GP value. This is an internal function used by some of the
1608 relocation special_function routines on targets which support a GP
1612 _bfd_get_gp_value (bfd *abfd)
1616 if (abfd->format != bfd_object)
1619 if (abfd->xvec->flavour == bfd_target_ecoff_flavour)
1620 return ecoff_data (abfd)->gp;
1621 else if (abfd->xvec->flavour == bfd_target_elf_flavour)
1622 return elf_gp (abfd);
1627 /* Set the GP value. */
1630 _bfd_set_gp_value (bfd *abfd, bfd_vma v)
1634 if (abfd->format != bfd_object)
1637 if (abfd->xvec->flavour == bfd_target_ecoff_flavour)
1638 ecoff_data (abfd)->gp = v;
1639 else if (abfd->xvec->flavour == bfd_target_elf_flavour)
1648 bfd_vma bfd_scan_vma (const char *string, const char **end, int base);
1651 Convert, like <<strtoul>>, a numerical expression
1652 @var{string} into a <<bfd_vma>> integer, and return that integer.
1653 (Though without as many bells and whistles as <<strtoul>>.)
1654 The expression is assumed to be unsigned (i.e., positive).
1655 If given a @var{base}, it is used as the base for conversion.
1656 A base of 0 causes the function to interpret the string
1657 in hex if a leading "0x" or "0X" is found, otherwise
1658 in octal if a leading zero is found, otherwise in decimal.
1660 If the value would overflow, the maximum <<bfd_vma>> value is
1665 bfd_scan_vma (const char *string, const char **end, int base)
1669 unsigned int cutlim;
1672 /* Let the host do it if possible. */
1673 if (sizeof (bfd_vma) <= sizeof (unsigned long))
1674 return strtoul (string, (char **) end, base);
1676 #if defined (HAVE_STRTOULL) && defined (HAVE_LONG_LONG)
1677 if (sizeof (bfd_vma) <= sizeof (unsigned long long))
1678 return strtoull (string, (char **) end, base);
1683 if (string[0] == '0')
1685 if ((string[1] == 'x') || (string[1] == 'X'))
1692 if ((base < 2) || (base > 36))
1697 && (string[1] == 'x' || string[1] == 'X')
1698 && ISXDIGIT (string[2]))
1703 cutoff = (~ (bfd_vma) 0) / (bfd_vma) base;
1704 cutlim = (~ (bfd_vma) 0) % (bfd_vma) base;
1712 if (ISDIGIT (digit))
1713 digit = digit - '0';
1714 else if (ISALPHA (digit))
1715 digit = TOUPPER (digit) - 'A' + 10;
1718 if (digit >= (unsigned int) base)
1720 if (value > cutoff || (value == cutoff && digit > cutlim))
1722 value = value * base + digit;
1727 value = ~ (bfd_vma) 0;
1737 bfd_copy_private_header_data
1740 bfd_boolean bfd_copy_private_header_data (bfd *ibfd, bfd *obfd);
1743 Copy private BFD header information from the BFD @var{ibfd} to the
1744 the BFD @var{obfd}. This copies information that may require
1745 sections to exist, but does not require symbol tables. Return
1746 <<true>> on success, <<false>> on error.
1747 Possible error returns are:
1749 o <<bfd_error_no_memory>> -
1750 Not enough memory exists to create private data for @var{obfd}.
1752 .#define bfd_copy_private_header_data(ibfd, obfd) \
1753 . BFD_SEND (obfd, _bfd_copy_private_header_data, \
1760 bfd_copy_private_bfd_data
1763 bfd_boolean bfd_copy_private_bfd_data (bfd *ibfd, bfd *obfd);
1766 Copy private BFD information from the BFD @var{ibfd} to the
1767 the BFD @var{obfd}. Return <<TRUE>> on success, <<FALSE>> on error.
1768 Possible error returns are:
1770 o <<bfd_error_no_memory>> -
1771 Not enough memory exists to create private data for @var{obfd}.
1773 .#define bfd_copy_private_bfd_data(ibfd, obfd) \
1774 . BFD_SEND (obfd, _bfd_copy_private_bfd_data, \
1781 bfd_set_private_flags
1784 bfd_boolean bfd_set_private_flags (bfd *abfd, flagword flags);
1787 Set private BFD flag information in the BFD @var{abfd}.
1788 Return <<TRUE>> on success, <<FALSE>> on error. Possible error
1791 o <<bfd_error_no_memory>> -
1792 Not enough memory exists to create private data for @var{obfd}.
1794 .#define bfd_set_private_flags(abfd, flags) \
1795 . BFD_SEND (abfd, _bfd_set_private_flags, (abfd, flags))
1804 The following functions exist but have not yet been documented.
1806 .#define bfd_sizeof_headers(abfd, info) \
1807 . BFD_SEND (abfd, _bfd_sizeof_headers, (abfd, info))
1809 .#define bfd_find_nearest_line(abfd, sec, syms, off, file, func, line) \
1810 . BFD_SEND (abfd, _bfd_find_nearest_line, \
1811 . (abfd, syms, sec, off, file, func, line, NULL))
1813 .#define bfd_find_nearest_line_discriminator(abfd, sec, syms, off, file, func, \
1815 . BFD_SEND (abfd, _bfd_find_nearest_line, \
1816 . (abfd, syms, sec, off, file, func, line, disc))
1818 .#define bfd_find_line(abfd, syms, sym, file, line) \
1819 . BFD_SEND (abfd, _bfd_find_line, \
1820 . (abfd, syms, sym, file, line))
1822 .#define bfd_find_inliner_info(abfd, file, func, line) \
1823 . BFD_SEND (abfd, _bfd_find_inliner_info, \
1824 . (abfd, file, func, line))
1826 .#define bfd_debug_info_start(abfd) \
1827 . BFD_SEND (abfd, _bfd_debug_info_start, (abfd))
1829 .#define bfd_debug_info_end(abfd) \
1830 . BFD_SEND (abfd, _bfd_debug_info_end, (abfd))
1832 .#define bfd_debug_info_accumulate(abfd, section) \
1833 . BFD_SEND (abfd, _bfd_debug_info_accumulate, (abfd, section))
1835 .#define bfd_stat_arch_elt(abfd, stat) \
1836 . BFD_SEND (abfd, _bfd_stat_arch_elt,(abfd, stat))
1838 .#define bfd_update_armap_timestamp(abfd) \
1839 . BFD_SEND (abfd, _bfd_update_armap_timestamp, (abfd))
1841 .#define bfd_set_arch_mach(abfd, arch, mach)\
1842 . BFD_SEND ( abfd, _bfd_set_arch_mach, (abfd, arch, mach))
1844 .#define bfd_relax_section(abfd, section, link_info, again) \
1845 . BFD_SEND (abfd, _bfd_relax_section, (abfd, section, link_info, again))
1847 .#define bfd_gc_sections(abfd, link_info) \
1848 . BFD_SEND (abfd, _bfd_gc_sections, (abfd, link_info))
1850 .#define bfd_lookup_section_flags(link_info, flag_info, section) \
1851 . BFD_SEND (abfd, _bfd_lookup_section_flags, (link_info, flag_info, section))
1853 .#define bfd_merge_sections(abfd, link_info) \
1854 . BFD_SEND (abfd, _bfd_merge_sections, (abfd, link_info))
1856 .#define bfd_is_group_section(abfd, sec) \
1857 . BFD_SEND (abfd, _bfd_is_group_section, (abfd, sec))
1859 .#define bfd_discard_group(abfd, sec) \
1860 . BFD_SEND (abfd, _bfd_discard_group, (abfd, sec))
1862 .#define bfd_link_hash_table_create(abfd) \
1863 . BFD_SEND (abfd, _bfd_link_hash_table_create, (abfd))
1865 .#define bfd_link_add_symbols(abfd, info) \
1866 . BFD_SEND (abfd, _bfd_link_add_symbols, (abfd, info))
1868 .#define bfd_link_just_syms(abfd, sec, info) \
1869 . BFD_SEND (abfd, _bfd_link_just_syms, (sec, info))
1871 .#define bfd_final_link(abfd, info) \
1872 . BFD_SEND (abfd, _bfd_final_link, (abfd, info))
1874 .#define bfd_free_cached_info(abfd) \
1875 . BFD_SEND (abfd, _bfd_free_cached_info, (abfd))
1877 .#define bfd_get_dynamic_symtab_upper_bound(abfd) \
1878 . BFD_SEND (abfd, _bfd_get_dynamic_symtab_upper_bound, (abfd))
1880 .#define bfd_print_private_bfd_data(abfd, file)\
1881 . BFD_SEND (abfd, _bfd_print_private_bfd_data, (abfd, file))
1883 .#define bfd_canonicalize_dynamic_symtab(abfd, asymbols) \
1884 . BFD_SEND (abfd, _bfd_canonicalize_dynamic_symtab, (abfd, asymbols))
1886 .#define bfd_get_synthetic_symtab(abfd, count, syms, dyncount, dynsyms, ret) \
1887 . BFD_SEND (abfd, _bfd_get_synthetic_symtab, (abfd, count, syms, \
1888 . dyncount, dynsyms, ret))
1890 .#define bfd_get_dynamic_reloc_upper_bound(abfd) \
1891 . BFD_SEND (abfd, _bfd_get_dynamic_reloc_upper_bound, (abfd))
1893 .#define bfd_canonicalize_dynamic_reloc(abfd, arels, asyms) \
1894 . BFD_SEND (abfd, _bfd_canonicalize_dynamic_reloc, (abfd, arels, asyms))
1896 .extern bfd_byte *bfd_get_relocated_section_contents
1897 . (bfd *, struct bfd_link_info *, struct bfd_link_order *, bfd_byte *,
1898 . bfd_boolean, asymbol **);
1904 bfd_get_relocated_section_contents (bfd *abfd,
1905 struct bfd_link_info *link_info,
1906 struct bfd_link_order *link_order,
1908 bfd_boolean relocatable,
1912 bfd_byte *(*fn) (bfd *, struct bfd_link_info *, struct bfd_link_order *,
1913 bfd_byte *, bfd_boolean, asymbol **);
1915 if (link_order->type == bfd_indirect_link_order)
1917 abfd2 = link_order->u.indirect.section->owner;
1924 fn = abfd2->xvec->_bfd_get_relocated_section_contents;
1926 return (*fn) (abfd, link_info, link_order, data, relocatable, symbols);
1929 /* Record information about an ELF program header. */
1932 bfd_record_phdr (bfd *abfd,
1934 bfd_boolean flags_valid,
1936 bfd_boolean at_valid,
1938 bfd_boolean includes_filehdr,
1939 bfd_boolean includes_phdrs,
1943 struct elf_segment_map *m, **pm;
1946 if (bfd_get_flavour (abfd) != bfd_target_elf_flavour)
1949 amt = sizeof (struct elf_segment_map);
1950 amt += ((bfd_size_type) count - 1) * sizeof (asection *);
1951 m = (struct elf_segment_map *) bfd_zalloc (abfd, amt);
1958 m->p_flags_valid = flags_valid;
1959 m->p_paddr_valid = at_valid;
1960 m->includes_filehdr = includes_filehdr;
1961 m->includes_phdrs = includes_phdrs;
1964 memcpy (m->sections, secs, count * sizeof (asection *));
1966 for (pm = &elf_seg_map (abfd); *pm != NULL; pm = &(*pm)->next)
1974 /* Return true iff this target is 32-bit. */
1979 if (bfd_get_flavour (abfd) == bfd_target_elf_flavour)
1981 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
1982 return bed->s->elfclass == ELFCLASS32;
1985 /* For non-ELF targets, use architecture information. */
1986 return bfd_arch_bits_per_address (abfd) <= 32;
1990 /* bfd_sprintf_vma and bfd_fprintf_vma display an address in the
1991 target's address size. */
1994 bfd_sprintf_vma (bfd *abfd ATTRIBUTE_UNUSED, char *buf, bfd_vma value)
1999 sprintf (buf, "%08lx", (unsigned long) value & 0xffffffff);
2003 sprintf_vma (buf, value);
2007 bfd_fprintf_vma (bfd *abfd ATTRIBUTE_UNUSED, void *stream, bfd_vma value)
2012 fprintf ((FILE *) stream, "%08lx", (unsigned long) value & 0xffffffff);
2016 fprintf_vma ((FILE *) stream, value);
2024 bfd_boolean bfd_alt_mach_code (bfd *abfd, int alternative);
2028 When more than one machine code number is available for the
2029 same machine type, this function can be used to switch between
2030 the preferred one (alternative == 0) and any others. Currently,
2031 only ELF supports this feature, with up to two alternate
2036 bfd_alt_mach_code (bfd *abfd, int alternative)
2038 if (bfd_get_flavour (abfd) == bfd_target_elf_flavour)
2042 switch (alternative)
2045 code = get_elf_backend_data (abfd)->elf_machine_code;
2049 code = get_elf_backend_data (abfd)->elf_machine_alt1;
2055 code = get_elf_backend_data (abfd)->elf_machine_alt2;
2064 elf_elfheader (abfd)->e_machine = code;
2074 bfd_emul_get_maxpagesize
2077 bfd_vma bfd_emul_get_maxpagesize (const char *);
2080 Returns the maximum page size, in bytes, as determined by
2084 Returns the maximum page size in bytes for ELF, 0 otherwise.
2088 bfd_emul_get_maxpagesize (const char *emul)
2090 const bfd_target *target;
2092 target = bfd_find_target (emul, NULL);
2094 && target->flavour == bfd_target_elf_flavour)
2095 return xvec_get_elf_backend_data (target)->maxpagesize;
2101 bfd_elf_set_pagesize (const bfd_target *target, bfd_vma size,
2102 int offset, const bfd_target *orig_target)
2104 if (target->flavour == bfd_target_elf_flavour)
2106 const struct elf_backend_data *bed;
2108 bed = xvec_get_elf_backend_data (target);
2109 *((bfd_vma *) ((char *) bed + offset)) = size;
2112 if (target->alternative_target
2113 && target->alternative_target != orig_target)
2114 bfd_elf_set_pagesize (target->alternative_target, size, offset,
2120 bfd_emul_set_maxpagesize
2123 void bfd_emul_set_maxpagesize (const char *, bfd_vma);
2126 For ELF, set the maximum page size for the emulation. It is
2127 a no-op for other formats.
2132 bfd_emul_set_maxpagesize (const char *emul, bfd_vma size)
2134 const bfd_target *target;
2136 target = bfd_find_target (emul, NULL);
2138 bfd_elf_set_pagesize (target, size,
2139 offsetof (struct elf_backend_data,
2140 maxpagesize), target);
2145 bfd_emul_get_commonpagesize
2148 bfd_vma bfd_emul_get_commonpagesize (const char *, bfd_boolean);
2151 Returns the common page size, in bytes, as determined by
2155 Returns the common page size in bytes for ELF, 0 otherwise.
2159 bfd_emul_get_commonpagesize (const char *emul, bfd_boolean relro)
2161 const bfd_target *target;
2163 target = bfd_find_target (emul, NULL);
2165 && target->flavour == bfd_target_elf_flavour)
2167 const struct elf_backend_data *bed;
2169 bed = xvec_get_elf_backend_data (target);
2171 return bed->relropagesize;
2173 return bed->commonpagesize;
2180 bfd_emul_set_commonpagesize
2183 void bfd_emul_set_commonpagesize (const char *, bfd_vma);
2186 For ELF, set the common page size for the emulation. It is
2187 a no-op for other formats.
2192 bfd_emul_set_commonpagesize (const char *emul, bfd_vma size)
2194 const bfd_target *target;
2196 target = bfd_find_target (emul, NULL);
2198 bfd_elf_set_pagesize (target, size,
2199 offsetof (struct elf_backend_data,
2200 commonpagesize), target);
2208 char *bfd_demangle (bfd *, const char *, int);
2211 Wrapper around cplus_demangle. Strips leading underscores and
2212 other such chars that would otherwise confuse the demangler.
2213 If passed a g++ v3 ABI mangled name, returns a buffer allocated
2214 with malloc holding the demangled name. Returns NULL otherwise
2215 and on memory alloc failure.
2219 bfd_demangle (bfd *abfd, const char *name, int options)
2222 const char *pre, *suf;
2224 bfd_boolean skip_lead;
2226 skip_lead = (abfd != NULL
2228 && bfd_get_symbol_leading_char (abfd) == *name);
2232 /* This is a hack for better error reporting on XCOFF, PowerPC64-ELF
2233 or the MS PE format. These formats have a number of leading '.'s
2234 on at least some symbols, so we remove all dots to avoid
2235 confusing the demangler. */
2237 while (*name == '.' || *name == '$')
2239 pre_len = name - pre;
2241 /* Strip off @plt and suchlike too. */
2243 suf = strchr (name, '@');
2246 alloc = (char *) bfd_malloc (suf - name + 1);
2249 memcpy (alloc, name, suf - name);
2250 alloc[suf - name] = '\0';
2254 res = cplus_demangle (name, options);
2263 size_t len = strlen (pre) + 1;
2264 alloc = (char *) bfd_malloc (len);
2267 memcpy (alloc, pre, len);
2273 /* Put back any prefix or suffix. */
2274 if (pre_len != 0 || suf != NULL)
2283 suf_len = strlen (suf) + 1;
2284 final = (char *) bfd_malloc (pre_len + len + suf_len);
2287 memcpy (final, pre, pre_len);
2288 memcpy (final + pre_len, res, len);
2289 memcpy (final + pre_len + len, suf, suf_len);
2300 bfd_update_compression_header
2303 void bfd_update_compression_header
2304 (bfd *abfd, bfd_byte *contents, asection *sec);
2307 Set the compression header at CONTENTS of SEC in ABFD and update
2308 elf_section_flags for compression.
2312 bfd_update_compression_header (bfd *abfd, bfd_byte *contents,
2315 if ((abfd->flags & BFD_COMPRESS) != 0)
2317 if (bfd_get_flavour (abfd) == bfd_target_elf_flavour)
2319 if ((abfd->flags & BFD_COMPRESS_GABI) != 0)
2321 const struct elf_backend_data *bed
2322 = get_elf_backend_data (abfd);
2324 /* Set the SHF_COMPRESSED bit. */
2325 elf_section_flags (sec) |= SHF_COMPRESSED;
2327 if (bed->s->elfclass == ELFCLASS32)
2329 Elf32_External_Chdr *echdr
2330 = (Elf32_External_Chdr *) contents;
2331 bfd_put_32 (abfd, ELFCOMPRESS_ZLIB, &echdr->ch_type);
2332 bfd_put_32 (abfd, sec->size, &echdr->ch_size);
2333 bfd_put_32 (abfd, 1 << sec->alignment_power,
2334 &echdr->ch_addralign);
2335 /* bfd_log2 (alignof (Elf32_Chdr)) */
2336 bfd_set_section_alignment (abfd, sec, 2);
2340 Elf64_External_Chdr *echdr
2341 = (Elf64_External_Chdr *) contents;
2342 bfd_put_32 (abfd, ELFCOMPRESS_ZLIB, &echdr->ch_type);
2343 bfd_put_32 (abfd, 0, &echdr->ch_reserved);
2344 bfd_put_64 (abfd, sec->size, &echdr->ch_size);
2345 bfd_put_64 (abfd, 1 << sec->alignment_power,
2346 &echdr->ch_addralign);
2347 /* bfd_log2 (alignof (Elf64_Chdr)) */
2348 bfd_set_section_alignment (abfd, sec, 3);
2353 /* Clear the SHF_COMPRESSED bit. */
2354 elf_section_flags (sec) &= ~SHF_COMPRESSED;
2356 /* Write the zlib header. It should be "ZLIB" followed by
2357 the uncompressed section size, 8 bytes in big-endian
2359 memcpy (contents, "ZLIB", 4);
2360 bfd_putb64 (sec->size, contents + 4);
2361 /* No way to keep the original alignment, just use 1 always. */
2362 bfd_set_section_alignment (abfd, sec, 0);
2372 bfd_check_compression_header
2375 bfd_boolean bfd_check_compression_header
2376 (bfd *abfd, bfd_byte *contents, asection *sec,
2377 bfd_size_type *uncompressed_size,
2378 unsigned int *uncompressed_alignment_power);
2381 Check the compression header at CONTENTS of SEC in ABFD and
2382 store the uncompressed size in UNCOMPRESSED_SIZE and the
2383 uncompressed data alignment in UNCOMPRESSED_ALIGNMENT_POWER
2384 if the compression header is valid.
2387 Return TRUE if the compression header is valid.
2391 bfd_check_compression_header (bfd *abfd, bfd_byte *contents,
2393 bfd_size_type *uncompressed_size,
2394 unsigned int *uncompressed_alignment_power)
2396 if (bfd_get_flavour (abfd) == bfd_target_elf_flavour
2397 && (elf_section_flags (sec) & SHF_COMPRESSED) != 0)
2399 Elf_Internal_Chdr chdr;
2400 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
2401 if (bed->s->elfclass == ELFCLASS32)
2403 Elf32_External_Chdr *echdr = (Elf32_External_Chdr *) contents;
2404 chdr.ch_type = bfd_get_32 (abfd, &echdr->ch_type);
2405 chdr.ch_size = bfd_get_32 (abfd, &echdr->ch_size);
2406 chdr.ch_addralign = bfd_get_32 (abfd, &echdr->ch_addralign);
2410 Elf64_External_Chdr *echdr = (Elf64_External_Chdr *) contents;
2411 chdr.ch_type = bfd_get_32 (abfd, &echdr->ch_type);
2412 chdr.ch_size = bfd_get_64 (abfd, &echdr->ch_size);
2413 chdr.ch_addralign = bfd_get_64 (abfd, &echdr->ch_addralign);
2415 if (chdr.ch_type == ELFCOMPRESS_ZLIB
2416 && chdr.ch_addralign == (1U << bfd_log2 (chdr.ch_addralign)))
2418 *uncompressed_size = chdr.ch_size;
2419 *uncompressed_alignment_power = bfd_log2 (chdr.ch_addralign);
2429 bfd_get_compression_header_size
2432 int bfd_get_compression_header_size (bfd *abfd, asection *sec);
2435 Return the size of the compression header of SEC in ABFD.
2438 Return the size of the compression header in bytes.
2442 bfd_get_compression_header_size (bfd *abfd, asection *sec)
2444 if (bfd_get_flavour (abfd) == bfd_target_elf_flavour)
2448 if (!(abfd->flags & BFD_COMPRESS_GABI))
2451 else if (!(elf_section_flags (sec) & SHF_COMPRESSED))
2454 if (get_elf_backend_data (abfd)->s->elfclass == ELFCLASS32)
2455 return sizeof (Elf32_External_Chdr);
2457 return sizeof (Elf64_External_Chdr);
2465 bfd_convert_section_size
2468 bfd_size_type bfd_convert_section_size
2469 (bfd *ibfd, asection *isec, bfd *obfd, bfd_size_type size);
2472 Convert the size @var{size} of the section @var{isec} in input
2473 BFD @var{ibfd} to the section size in output BFD @var{obfd}.
2477 bfd_convert_section_size (bfd *ibfd, sec_ptr isec, bfd *obfd,
2480 bfd_size_type hdr_size;
2482 /* Do nothing if either input or output aren't ELF. */
2483 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
2484 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
2487 /* Do nothing if ELF classes of input and output are the same. */
2488 if (get_elf_backend_data (ibfd)->s->elfclass
2489 == get_elf_backend_data (obfd)->s->elfclass)
2492 /* Convert GNU property size. */
2493 if (CONST_STRNEQ (isec->name, NOTE_GNU_PROPERTY_SECTION_NAME))
2494 return _bfd_elf_convert_gnu_property_size (ibfd, obfd);
2496 /* Do nothing if input file will be decompressed. */
2497 if ((ibfd->flags & BFD_DECOMPRESS))
2500 /* Do nothing if the input section isn't a SHF_COMPRESSED section. */
2501 hdr_size = bfd_get_compression_header_size (ibfd, isec);
2505 /* Adjust the size of the output SHF_COMPRESSED section. */
2506 if (hdr_size == sizeof (Elf32_External_Chdr))
2507 return (size - sizeof (Elf32_External_Chdr)
2508 + sizeof (Elf64_External_Chdr));
2510 return (size - sizeof (Elf64_External_Chdr)
2511 + sizeof (Elf32_External_Chdr));
2516 bfd_convert_section_contents
2519 bfd_boolean bfd_convert_section_contents
2520 (bfd *ibfd, asection *isec, bfd *obfd,
2521 bfd_byte **ptr, bfd_size_type *ptr_size);
2524 Convert the contents, stored in @var{*ptr}, of the section
2525 @var{isec} in input BFD @var{ibfd} to output BFD @var{obfd}
2526 if needed. The original buffer pointed to by @var{*ptr} may
2527 be freed and @var{*ptr} is returned with memory malloc'd by this
2528 function, and the new size written to @var{ptr_size}.
2532 bfd_convert_section_contents (bfd *ibfd, sec_ptr isec, bfd *obfd,
2533 bfd_byte **ptr, bfd_size_type *ptr_size)
2536 bfd_size_type ihdr_size, ohdr_size, size;
2537 Elf_Internal_Chdr chdr;
2538 bfd_boolean use_memmove;
2540 /* Do nothing if either input or output aren't ELF. */
2541 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
2542 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
2545 /* Do nothing if ELF classes of input and output are the same. */
2546 if (get_elf_backend_data (ibfd)->s->elfclass
2547 == get_elf_backend_data (obfd)->s->elfclass)
2550 /* Convert GNU properties. */
2551 if (CONST_STRNEQ (isec->name, NOTE_GNU_PROPERTY_SECTION_NAME))
2552 return _bfd_elf_convert_gnu_properties (ibfd, isec, obfd, ptr,
2555 /* Do nothing if input file will be decompressed. */
2556 if ((ibfd->flags & BFD_DECOMPRESS))
2559 /* Do nothing if the input section isn't a SHF_COMPRESSED section. */
2560 ihdr_size = bfd_get_compression_header_size (ibfd, isec);
2566 /* Convert the contents of the input SHF_COMPRESSED section to
2567 output. Get the input compression header and the size of the
2568 output compression header. */
2569 if (ihdr_size == sizeof (Elf32_External_Chdr))
2571 Elf32_External_Chdr *echdr = (Elf32_External_Chdr *) contents;
2572 chdr.ch_type = bfd_get_32 (ibfd, &echdr->ch_type);
2573 chdr.ch_size = bfd_get_32 (ibfd, &echdr->ch_size);
2574 chdr.ch_addralign = bfd_get_32 (ibfd, &echdr->ch_addralign);
2576 ohdr_size = sizeof (Elf64_External_Chdr);
2578 use_memmove = FALSE;
2582 Elf64_External_Chdr *echdr = (Elf64_External_Chdr *) contents;
2583 chdr.ch_type = bfd_get_32 (ibfd, &echdr->ch_type);
2584 chdr.ch_size = bfd_get_64 (ibfd, &echdr->ch_size);
2585 chdr.ch_addralign = bfd_get_64 (ibfd, &echdr->ch_addralign);
2587 ohdr_size = sizeof (Elf32_External_Chdr);
2591 size = bfd_get_section_size (isec) - ihdr_size + ohdr_size;
2594 contents = (bfd_byte *) bfd_malloc (size);
2595 if (contents == NULL)
2599 /* Write out the output compression header. */
2600 if (ohdr_size == sizeof (Elf32_External_Chdr))
2602 Elf32_External_Chdr *echdr = (Elf32_External_Chdr *) contents;
2603 bfd_put_32 (obfd, ELFCOMPRESS_ZLIB, &echdr->ch_type);
2604 bfd_put_32 (obfd, chdr.ch_size, &echdr->ch_size);
2605 bfd_put_32 (obfd, chdr.ch_addralign, &echdr->ch_addralign);
2609 Elf64_External_Chdr *echdr = (Elf64_External_Chdr *) contents;
2610 bfd_put_32 (obfd, ELFCOMPRESS_ZLIB, &echdr->ch_type);
2611 bfd_put_32 (obfd, 0, &echdr->ch_reserved);
2612 bfd_put_64 (obfd, chdr.ch_size, &echdr->ch_size);
2613 bfd_put_64 (obfd, chdr.ch_addralign, &echdr->ch_addralign);
2616 /* Copy the compressed contents. */
2618 memmove (contents + ohdr_size, *ptr + ihdr_size, size - ohdr_size);
2621 memcpy (contents + ohdr_size, *ptr + ihdr_size, size - ohdr_size);