1 /* Generic BFD library interface and support routines.
2 Copyright (C) 1990-2018 Free Software Foundation, Inc.
3 Written by Cygnus Support.
5 This file is part of BFD, the Binary File Descriptor library.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
20 MA 02110-1301, USA. */
24 typedef bfd, Error reporting, BFD front end, BFD front end
29 A BFD has type <<bfd>>; objects of this type are the
30 cornerstone of any application using BFD. Using BFD
31 consists of making references though the BFD and to data in the BFD.
33 Here is the structure that defines the type <<bfd>>. It
34 contains the major data about the file and pointers
35 to the rest of the data.
43 . write_direction = 2,
47 .enum bfd_plugin_format
49 . bfd_plugin_unknown = 0,
62 . {* The filename the application opened the BFD with. *}
63 . const char *filename;
65 . {* A pointer to the target jump table. *}
66 . const struct bfd_target *xvec;
68 . {* The IOSTREAM, and corresponding IO vector that provide access
69 . to the file backing the BFD. *}
71 . const struct bfd_iovec *iovec;
73 . {* The caching routines use these to maintain a
74 . least-recently-used list of BFDs. *}
75 . struct bfd *lru_prev, *lru_next;
77 . {* When a file is closed by the caching routines, BFD retains
78 . state information on the file here... *}
81 . {* File modified time, if mtime_set is TRUE. *}
84 . {* A unique identifier of the BFD *}
87 . {* The format which belongs to the BFD. (object, core, etc.) *}
88 . ENUM_BITFIELD (bfd_format) format : 3;
90 . {* The direction with which the BFD was opened. *}
91 . ENUM_BITFIELD (bfd_direction) direction : 2;
93 . {* Format_specific flags. *}
94 . flagword flags : 20;
96 . {* Values that may appear in the flags field of a BFD. These also
97 . appear in the object_flags field of the bfd_target structure, where
98 . they indicate the set of flags used by that backend (not all flags
99 . are meaningful for all object file formats) (FIXME: at the moment,
100 . the object_flags values have mostly just been copied from backend
101 . to another, and are not necessarily correct). *}
103 .#define BFD_NO_FLAGS 0x0
105 . {* BFD contains relocation entries. *}
106 .#define HAS_RELOC 0x1
108 . {* BFD is directly executable. *}
111 . {* BFD has line number information (basically used for F_LNNO in a
113 .#define HAS_LINENO 0x4
115 . {* BFD has debugging information. *}
116 .#define HAS_DEBUG 0x08
118 . {* BFD has symbols. *}
119 .#define HAS_SYMS 0x10
121 . {* BFD has local symbols (basically used for F_LSYMS in a COFF
123 .#define HAS_LOCALS 0x20
125 . {* BFD is a dynamic object. *}
126 .#define DYNAMIC 0x40
128 . {* Text section is write protected (if D_PAGED is not set, this is
129 . like an a.out NMAGIC file) (the linker sets this by default, but
130 . clears it for -r or -N). *}
131 .#define WP_TEXT 0x80
133 . {* BFD is dynamically paged (this is like an a.out ZMAGIC file) (the
134 . linker sets this by default, but clears it for -r or -n or -N). *}
135 .#define D_PAGED 0x100
137 . {* BFD is relaxable (this means that bfd_relax_section may be able to
138 . do something) (sometimes bfd_relax_section can do something even if
139 . this is not set). *}
140 .#define BFD_IS_RELAXABLE 0x200
142 . {* This may be set before writing out a BFD to request using a
143 . traditional format. For example, this is used to request that when
144 . writing out an a.out object the symbols not be hashed to eliminate
146 .#define BFD_TRADITIONAL_FORMAT 0x400
148 . {* This flag indicates that the BFD contents are actually cached
149 . in memory. If this is set, iostream points to a bfd_in_memory
151 .#define BFD_IN_MEMORY 0x800
153 . {* This BFD has been created by the linker and doesn't correspond
154 . to any input file. *}
155 .#define BFD_LINKER_CREATED 0x1000
157 . {* This may be set before writing out a BFD to request that it
158 . be written using values for UIDs, GIDs, timestamps, etc. that
159 . will be consistent from run to run. *}
160 .#define BFD_DETERMINISTIC_OUTPUT 0x2000
162 . {* Compress sections in this BFD. *}
163 .#define BFD_COMPRESS 0x4000
165 . {* Decompress sections in this BFD. *}
166 .#define BFD_DECOMPRESS 0x8000
168 . {* BFD is a dummy, for plugins. *}
169 .#define BFD_PLUGIN 0x10000
171 . {* Compress sections in this BFD with SHF_COMPRESSED from gABI. *}
172 .#define BFD_COMPRESS_GABI 0x20000
174 . {* Convert ELF common symbol type to STT_COMMON or STT_OBJECT in this
176 .#define BFD_CONVERT_ELF_COMMON 0x40000
178 . {* Use the ELF STT_COMMON type in this BFD. *}
179 .#define BFD_USE_ELF_STT_COMMON 0x80000
181 . {* Flags bits to be saved in bfd_preserve_save. *}
182 .#define BFD_FLAGS_SAVED \
183 . (BFD_IN_MEMORY | BFD_COMPRESS | BFD_DECOMPRESS | BFD_LINKER_CREATED \
184 . | BFD_PLUGIN | BFD_COMPRESS_GABI | BFD_CONVERT_ELF_COMMON \
185 . | BFD_USE_ELF_STT_COMMON)
187 . {* Flags bits which are for BFD use only. *}
188 .#define BFD_FLAGS_FOR_BFD_USE_MASK \
189 . (BFD_IN_MEMORY | BFD_COMPRESS | BFD_DECOMPRESS | BFD_LINKER_CREATED \
190 . | BFD_PLUGIN | BFD_TRADITIONAL_FORMAT | BFD_DETERMINISTIC_OUTPUT \
191 . | BFD_COMPRESS_GABI | BFD_CONVERT_ELF_COMMON | BFD_USE_ELF_STT_COMMON)
193 . {* Is the file descriptor being cached? That is, can it be closed as
194 . needed, and re-opened when accessed later? *}
195 . unsigned int cacheable : 1;
197 . {* Marks whether there was a default target specified when the
198 . BFD was opened. This is used to select which matching algorithm
199 . to use to choose the back end. *}
200 . unsigned int target_defaulted : 1;
202 . {* ... and here: (``once'' means at least once). *}
203 . unsigned int opened_once : 1;
205 . {* Set if we have a locally maintained mtime value, rather than
206 . getting it from the file each time. *}
207 . unsigned int mtime_set : 1;
209 . {* Flag set if symbols from this BFD should not be exported. *}
210 . unsigned int no_export : 1;
212 . {* Remember when output has begun, to stop strange things
214 . unsigned int output_has_begun : 1;
216 . {* Have archive map. *}
217 . unsigned int has_armap : 1;
219 . {* Set if this is a thin archive. *}
220 . unsigned int is_thin_archive : 1;
222 . {* Set if only required symbols should be added in the link hash table for
223 . this object. Used by VMS linkers. *}
224 . unsigned int selective_search : 1;
226 . {* Set if this is the linker output BFD. *}
227 . unsigned int is_linker_output : 1;
229 . {* Set if this is the linker input BFD. *}
230 . unsigned int is_linker_input : 1;
232 . {* If this is an input for a compiler plug-in library. *}
233 . ENUM_BITFIELD (bfd_plugin_format) plugin_format : 2;
235 . {* Set if this is a plugin output file. *}
236 . unsigned int lto_output : 1;
238 . {* Set to dummy BFD created when claimed by a compiler plug-in
240 . bfd *plugin_dummy_bfd;
242 . {* Currently my_archive is tested before adding origin to
243 . anything. I believe that this can become always an add of
244 . origin, with origin set to 0 for non archive files. *}
247 . {* The origin in the archive of the proxy entry. This will
248 . normally be the same as origin, except for thin archives,
249 . when it will contain the current offset of the proxy in the
250 . thin archive rather than the offset of the bfd in its actual
252 . ufile_ptr proxy_origin;
254 . {* A hash table for section names. *}
255 . struct bfd_hash_table section_htab;
257 . {* Pointer to linked list of sections. *}
258 . struct bfd_section *sections;
260 . {* The last section on the section list. *}
261 . struct bfd_section *section_last;
263 . {* The number of sections. *}
264 . unsigned int section_count;
266 . {* A field used by _bfd_generic_link_add_archive_symbols. This will
267 . be used only for archive elements. *}
270 . {* Stuff only useful for object files:
271 . The start address. *}
272 . bfd_vma start_address;
274 . {* Symbol table for output BFD (with symcount entries).
275 . Also used by the linker to cache input BFD symbols. *}
276 . struct bfd_symbol **outsymbols;
278 . {* Used for input and output. *}
279 . unsigned int symcount;
281 . {* Used for slurped dynamic symbol tables. *}
282 . unsigned int dynsymcount;
284 . {* Pointer to structure which contains architecture information. *}
285 . const struct bfd_arch_info *arch_info;
287 . {* Stuff only useful for archives. *}
289 . struct bfd *my_archive; {* The containing archive BFD. *}
290 . struct bfd *archive_next; {* The next BFD in the archive. *}
291 . struct bfd *archive_head; {* The first BFD in the archive. *}
292 . struct bfd *nested_archives; {* List of nested archive in a flattened
296 . {* For input BFDs, a chain of BFDs involved in a link. *}
298 . {* For output BFD, the linker hash table. *}
299 . struct bfd_link_hash_table *hash;
302 . {* Used by the back end to hold private data. *}
305 . struct aout_data_struct *aout_data;
306 . struct artdata *aout_ar_data;
307 . struct _oasys_data *oasys_obj_data;
308 . struct _oasys_ar_data *oasys_ar_data;
309 . struct coff_tdata *coff_obj_data;
310 . struct pe_tdata *pe_obj_data;
311 . struct xcoff_tdata *xcoff_obj_data;
312 . struct ecoff_tdata *ecoff_obj_data;
313 . struct ieee_data_struct *ieee_data;
314 . struct ieee_ar_data_struct *ieee_ar_data;
315 . struct srec_data_struct *srec_data;
316 . struct verilog_data_struct *verilog_data;
317 . struct ihex_data_struct *ihex_data;
318 . struct tekhex_data_struct *tekhex_data;
319 . struct elf_obj_tdata *elf_obj_data;
320 . struct nlm_obj_tdata *nlm_obj_data;
321 . struct bout_data_struct *bout_data;
322 . struct mmo_data_struct *mmo_data;
323 . struct sun_core_struct *sun_core_data;
324 . struct sco5_core_struct *sco5_core_data;
325 . struct trad_core_struct *trad_core_data;
326 . struct som_data_struct *som_data;
327 . struct hpux_core_struct *hpux_core_data;
328 . struct hppabsd_core_struct *hppabsd_core_data;
329 . struct sgi_core_struct *sgi_core_data;
330 . struct lynx_core_struct *lynx_core_data;
331 . struct osf_core_struct *osf_core_data;
332 . struct cisco_core_struct *cisco_core_data;
333 . struct versados_data_struct *versados_data;
334 . struct netbsd_core_struct *netbsd_core_data;
335 . struct mach_o_data_struct *mach_o_data;
336 . struct mach_o_fat_data_struct *mach_o_fat_data;
337 . struct plugin_data_struct *plugin_data;
338 . struct bfd_pef_data_struct *pef_data;
339 . struct bfd_pef_xlib_data_struct *pef_xlib_data;
340 . struct bfd_sym_data_struct *sym_data;
345 . {* Used by the application to hold private data. *}
348 . {* Where all the allocated stuff under this BFD goes. This is a
349 . struct objalloc *, but we use void * to avoid requiring the inclusion
353 . {* For input BFDs, the build ID, if the object has one. *}
354 . const struct bfd_build_id *build_id;
357 .{* See note beside bfd_set_section_userdata. *}
358 .static inline bfd_boolean
359 .bfd_set_cacheable (bfd * abfd, bfd_boolean val)
361 . abfd->cacheable = val;
371 #include "libiberty.h"
372 #include "demangle.h"
373 #include "safe-ctype.h"
376 #include "coff/internal.h"
377 #include "coff/sym.h"
379 #include "libecoff.h"
384 #define EXIT_FAILURE 1
388 /* provide storage for subsystem, stack and heap data which may have been
389 passed in on the command line. Ld puts this data into a bfd_link_info
390 struct which ultimately gets passed in to the bfd. When it arrives, copy
391 it to the following struct so that the data will be available in coffcode.h
392 where it is needed. The typedef's used are defined in bfd.h */
396 Error reporting, Miscellaneous, typedef bfd, BFD front end
401 Most BFD functions return nonzero on success (check their
402 individual documentation for precise semantics). On an error,
403 they call <<bfd_set_error>> to set an error condition that callers
404 can check by calling <<bfd_get_error>>.
405 If that returns <<bfd_error_system_call>>, then check
408 The easiest way to report a BFD error to the user is to
412 Type <<bfd_error_type>>
414 The values returned by <<bfd_get_error>> are defined by the
415 enumerated type <<bfd_error_type>>.
419 .typedef enum bfd_error
421 . bfd_error_no_error = 0,
422 . bfd_error_system_call,
423 . bfd_error_invalid_target,
424 . bfd_error_wrong_format,
425 . bfd_error_wrong_object_format,
426 . bfd_error_invalid_operation,
427 . bfd_error_no_memory,
428 . bfd_error_no_symbols,
429 . bfd_error_no_armap,
430 . bfd_error_no_more_archived_files,
431 . bfd_error_malformed_archive,
432 . bfd_error_missing_dso,
433 . bfd_error_file_not_recognized,
434 . bfd_error_file_ambiguously_recognized,
435 . bfd_error_no_contents,
436 . bfd_error_nonrepresentable_section,
437 . bfd_error_no_debug_section,
438 . bfd_error_bad_value,
439 . bfd_error_file_truncated,
440 . bfd_error_file_too_big,
441 . bfd_error_on_input,
442 . bfd_error_invalid_error_code
448 static bfd_error_type bfd_error = bfd_error_no_error;
449 static bfd *input_bfd = NULL;
450 static bfd_error_type input_error = bfd_error_no_error;
452 const char *const bfd_errmsgs[] =
455 N_("System call error"),
456 N_("Invalid bfd target"),
457 N_("File in wrong format"),
458 N_("Archive object file in wrong format"),
459 N_("Invalid operation"),
460 N_("Memory exhausted"),
462 N_("Archive has no index; run ranlib to add one"),
463 N_("No more archived files"),
464 N_("Malformed archive"),
465 N_("DSO missing from command line"),
466 N_("File format not recognized"),
467 N_("File format is ambiguous"),
468 N_("Section has no contents"),
469 N_("Nonrepresentable section on output"),
470 N_("Symbol needs debug section which does not exist"),
472 N_("File truncated"),
474 N_("Error reading %s: %s"),
475 N_("#<Invalid error code>")
483 bfd_error_type bfd_get_error (void);
486 Return the current BFD error condition.
500 void bfd_set_error (bfd_error_type error_tag);
503 Set the BFD error condition to be @var{error_tag}.
505 @var{error_tag} must not be bfd_error_on_input. Use
506 bfd_set_input_error for input errors instead.
510 bfd_set_error (bfd_error_type error_tag)
512 bfd_error = error_tag;
513 if (bfd_error >= bfd_error_on_input)
522 void bfd_set_input_error (bfd *input, bfd_error_type error_tag);
526 Set the BFD error condition to be bfd_error_on_input.
527 @var{input} is the input bfd where the error occurred, and
528 @var{error_tag} the bfd_error_type error.
532 bfd_set_input_error (bfd *input, bfd_error_type error_tag)
534 /* This is an error that occurred during bfd_close when writing an
535 archive, but on one of the input files. */
536 bfd_error = bfd_error_on_input;
538 input_error = error_tag;
539 if (input_error >= bfd_error_on_input)
548 const char *bfd_errmsg (bfd_error_type error_tag);
551 Return a string describing the error @var{error_tag}, or
552 the system error if @var{error_tag} is <<bfd_error_system_call>>.
556 bfd_errmsg (bfd_error_type error_tag)
561 if (error_tag == bfd_error_on_input)
564 const char *msg = bfd_errmsg (input_error);
566 if (asprintf (&buf, _(bfd_errmsgs [error_tag]), input_bfd->filename, msg)
570 /* Ick, what to do on out of memory? */
574 if (error_tag == bfd_error_system_call)
575 return xstrerror (errno);
577 if (error_tag > bfd_error_invalid_error_code)
578 error_tag = bfd_error_invalid_error_code; /* sanity check */
580 return _(bfd_errmsgs [error_tag]);
588 void bfd_perror (const char *message);
591 Print to the standard error stream a string describing the
592 last BFD error that occurred, or the last system error if
593 the last BFD error was a system call failure. If @var{message}
594 is non-NULL and non-empty, the error string printed is preceded
595 by @var{message}, a colon, and a space. It is followed by a newline.
599 bfd_perror (const char *message)
602 if (message == NULL || *message == '\0')
603 fprintf (stderr, "%s\n", bfd_errmsg (bfd_get_error ()));
605 fprintf (stderr, "%s: %s\n", message, bfd_errmsg (bfd_get_error ()));
613 Some BFD functions want to print messages describing the
614 problem. They call a BFD error handler function. This
615 function may be overridden by the program.
617 The BFD error handler acts like vprintf.
621 .typedef void (*bfd_error_handler_type) (const char *, va_list);
625 /* The program name used when printing BFD error messages. */
627 static const char *_bfd_error_program_name;
629 /* Support for positional parameters. */
631 union _bfd_doprnt_args
651 /* This macro and _bfd_doprnt taken from libiberty _doprnt.c, tidied a
652 little and extended to handle '%pA', '%pB' and positional parameters.
653 'L' as a modifer for integer formats is used for bfd_vma and
654 bfd_size_type args, which vary in size depending on BFD
657 #define PRINT_TYPE(TYPE, FIELD) \
660 TYPE value = (TYPE) args[arg_no].FIELD; \
661 result = fprintf (stream, specifier, value); \
665 _bfd_doprnt (FILE *stream, const char *format, union _bfd_doprnt_args *args)
667 const char *ptr = format;
669 int total_printed = 0;
670 unsigned int arg_count = 0;
678 /* While we have regular characters, print them. */
679 char *end = strchr (ptr, '%');
681 result = fprintf (stream, "%.*s", (int) (end - ptr), ptr);
683 result = fprintf (stream, "%s", ptr);
686 else if (ptr[1] == '%')
694 /* We have a format specifier! */
695 char *sptr = specifier;
696 int wide_width = 0, short_width = 0;
699 /* Copy the % and move forward. */
702 /* Check for a positional parameter. */
704 if (*ptr != '0' && ISDIGIT (*ptr) && ptr[1] == '$')
710 /* Move past flags. */
711 while (strchr ("-+ #0'I", *ptr))
717 unsigned int arg_index;
720 arg_index = arg_count;
721 if (*ptr != '0' && ISDIGIT (*ptr) && ptr[1] == '$')
723 arg_index = *ptr - '1';
726 value = abs (args[arg_index].i);
728 sptr += sprintf (sptr, "%d", value);
731 /* Handle explicit numeric value. */
732 while (ISDIGIT (*ptr))
738 /* Copy and go past the period. */
743 unsigned int arg_index;
746 arg_index = arg_count;
747 if (*ptr != '0' && ISDIGIT (*ptr) && ptr[1] == '$')
749 arg_index = *ptr - '1';
752 value = abs (args[arg_index].i);
754 sptr += sprintf (sptr, "%d", value);
757 /* Handle explicit numeric value. */
758 while (ISDIGIT (*ptr))
761 while (strchr ("hlL", *ptr))
780 /* Copy the type specifier, and NULL terminate. */
783 if ((int) arg_no < 0)
796 /* Short values are promoted to int, so just copy it
797 as an int and trust the C library printf to cast it
798 to the right width. */
803 /* L modifier for bfd_vma or bfd_size_type may be
804 either long long or long. */
808 if (BFD_ARCH_SIZE < 64 || BFD_HOST_64BIT_LONG)
824 PRINT_TYPE (long, l);
828 #if defined (__MSVCRT__)
835 #if defined (__GNUC__) || defined (HAVE_LONG_LONG)
836 PRINT_TYPE (long long, ll);
838 /* Fake it and hope for the best. */
839 PRINT_TYPE (long, l);
853 PRINT_TYPE (double, d);
856 #if defined (__GNUC__) || defined (HAVE_LONG_DOUBLE)
857 PRINT_TYPE (long double, ld);
859 /* Fake it and hope for the best. */
860 PRINT_TYPE (double, d);
866 PRINT_TYPE (char *, p);
873 const char *group = NULL;
874 struct coff_comdat_info *ci;
877 sec = (asection *) args[arg_no].p;
879 /* Invoking %pA with a null section pointer is an
884 && bfd_get_flavour (abfd) == bfd_target_elf_flavour
885 && elf_next_in_group (sec) != NULL
886 && (sec->flags & SEC_GROUP) == 0)
887 group = elf_group_name (sec);
888 else if (abfd != NULL
889 && bfd_get_flavour (abfd) == bfd_target_coff_flavour
890 && (ci = bfd_coff_get_comdat_section (sec->owner,
894 result = fprintf (stream, "%s[%s]", sec->name, group);
896 result = fprintf (stream, "%s", sec->name);
898 else if (*ptr == 'B')
903 abfd = (bfd *) args[arg_no].p;
905 /* Invoking %pB with a null bfd pointer is an
908 else if (abfd->my_archive
909 && !bfd_is_thin_archive (abfd->my_archive))
910 result = fprintf (stream, "%s(%s)",
911 abfd->my_archive->filename,
914 result = fprintf (stream, "%s", abfd->filename);
917 PRINT_TYPE (void *, p);
926 total_printed += result;
929 return total_printed;
932 /* First pass over FORMAT to gather ARGS. Returns number of args. */
935 _bfd_doprnt_scan (const char *format, union _bfd_doprnt_args *args)
937 const char *ptr = format;
938 unsigned int arg_count = 0;
944 ptr = strchr (ptr, '%');
948 else if (ptr[1] == '%')
952 int wide_width = 0, short_width = 0;
958 /* Check for a positional parameter. */
960 if (*ptr != '0' && ISDIGIT (*ptr) && ptr[1] == '$')
966 /* Move past flags. */
967 while (strchr ("-+ #0'I", *ptr))
972 unsigned int arg_index;
975 arg_index = arg_count;
976 if (*ptr != '0' && ISDIGIT (*ptr) && ptr[1] == '$')
978 arg_index = *ptr - '1';
983 args[arg_index].type = Int;
987 /* Handle explicit numeric value. */
988 while (ISDIGIT (*ptr))
997 unsigned int arg_index;
1000 arg_index = arg_count;
1001 if (*ptr != '0' && ISDIGIT (*ptr) && ptr[1] == '$')
1003 arg_index = *ptr - '1';
1008 args[arg_index].type = Int;
1012 /* Handle explicit numeric value. */
1013 while (ISDIGIT (*ptr))
1016 while (strchr ("hlL", *ptr))
1036 if ((int) arg_no < 0)
1056 if (BFD_ARCH_SIZE < 64 || BFD_HOST_64BIT_LONG)
1070 #if defined (__GNUC__) || defined (HAVE_LONG_LONG)
1071 arg_type = LongLong;
1086 if (wide_width == 0)
1090 #if defined (__GNUC__) || defined (HAVE_LONG_DOUBLE)
1091 arg_type = LongDouble;
1102 if (*ptr == 'A' || *ptr == 'B')
1112 args[arg_no].type = arg_type;
1120 /* This is the default routine to handle BFD error messages.
1121 Like fprintf (stderr, ...), but also handles some extra format specifiers.
1123 %pA section name from section. For group components, prints group name too.
1124 %pB file name from bfd. For archive components, prints archive too.
1126 Beware: Only supports a maximum of 9 format arguments. */
1129 error_handler_internal (const char *fmt, va_list ap)
1131 unsigned int i, arg_count;
1132 union _bfd_doprnt_args args[9];
1134 for (i = 0; i < sizeof (args) / sizeof (args[0]); i++)
1137 arg_count = _bfd_doprnt_scan (fmt, args);
1138 for (i = 0; i < arg_count; i++)
1140 switch (args[i].type)
1143 args[i].i = va_arg (ap, int);
1146 args[i].l = va_arg (ap, long);
1149 args[i].ll = va_arg (ap, long long);
1152 args[i].d = va_arg (ap, double);
1155 args[i].ld = va_arg (ap, long double);
1158 args[i].p = va_arg (ap, void *);
1165 /* PR 4992: Don't interrupt output being sent to stdout. */
1168 if (_bfd_error_program_name != NULL)
1169 fprintf (stderr, "%s: ", _bfd_error_program_name);
1171 fprintf (stderr, "BFD: ");
1173 _bfd_doprnt (stderr, fmt, args);
1175 /* On AIX, putc is implemented as a macro that triggers a -Wunused-value
1176 warning, so use the fputc function to avoid it. */
1177 fputc ('\n', stderr);
1181 /* This is a function pointer to the routine which should handle BFD
1182 error messages. It is called when a BFD routine encounters an
1183 error for which it wants to print a message. Going through a
1184 function pointer permits a program linked against BFD to intercept
1185 the messages and deal with them itself. */
1187 static bfd_error_handler_type _bfd_error_internal = error_handler_internal;
1190 _bfd_error_handler (const char *fmt, ...)
1195 _bfd_error_internal (fmt, ap);
1201 bfd_set_error_handler
1204 bfd_error_handler_type bfd_set_error_handler (bfd_error_handler_type);
1207 Set the BFD error handler function. Returns the previous
1211 bfd_error_handler_type
1212 bfd_set_error_handler (bfd_error_handler_type pnew)
1214 bfd_error_handler_type pold;
1216 pold = _bfd_error_internal;
1217 _bfd_error_internal = pnew;
1223 bfd_set_error_program_name
1226 void bfd_set_error_program_name (const char *);
1229 Set the program name to use when printing a BFD error. This
1230 is printed before the error message followed by a colon and
1231 space. The string must not be changed after it is passed to
1236 bfd_set_error_program_name (const char *name)
1238 _bfd_error_program_name = name;
1245 If BFD finds an internal inconsistency, the bfd assert
1246 handler is called with information on the BFD version, BFD
1247 source file and line. If this happens, most programs linked
1248 against BFD are expected to want to exit with an error, or mark
1249 the current BFD operation as failed, so it is recommended to
1250 override the default handler, which just calls
1251 _bfd_error_handler and continues.
1255 .typedef void (*bfd_assert_handler_type) (const char *bfd_formatmsg,
1256 . const char *bfd_version,
1257 . const char *bfd_file,
1262 /* Note the use of bfd_ prefix on the parameter names above: we want to
1263 show which one is the message and which is the version by naming the
1264 parameters, but avoid polluting the program-using-bfd namespace as
1265 the typedef is visible in the exported headers that the program
1266 includes. Below, it's just for consistency. */
1269 _bfd_default_assert_handler (const char *bfd_formatmsg,
1270 const char *bfd_version,
1271 const char *bfd_file,
1275 _bfd_error_handler (bfd_formatmsg, bfd_version, bfd_file, bfd_line);
1278 /* Similar to _bfd_error_handler, a program can decide to exit on an
1279 internal BFD error. We use a non-variadic type to simplify passing
1280 on parameters to other functions, e.g. _bfd_error_handler. */
1282 static bfd_assert_handler_type _bfd_assert_handler = _bfd_default_assert_handler;
1286 bfd_set_assert_handler
1289 bfd_assert_handler_type bfd_set_assert_handler (bfd_assert_handler_type);
1292 Set the BFD assert handler function. Returns the previous
1296 bfd_assert_handler_type
1297 bfd_set_assert_handler (bfd_assert_handler_type pnew)
1299 bfd_assert_handler_type pold;
1301 pold = _bfd_assert_handler;
1302 _bfd_assert_handler = pnew;
1308 Miscellaneous, Memory Usage, Error reporting, BFD front end
1314 Miscellaneous functions
1319 bfd_get_reloc_upper_bound
1322 long bfd_get_reloc_upper_bound (bfd *abfd, asection *sect);
1325 Return the number of bytes required to store the
1326 relocation information associated with section @var{sect}
1327 attached to bfd @var{abfd}. If an error occurs, return -1.
1332 bfd_get_reloc_upper_bound (bfd *abfd, sec_ptr asect)
1334 if (abfd->format != bfd_object)
1336 bfd_set_error (bfd_error_invalid_operation);
1340 return BFD_SEND (abfd, _get_reloc_upper_bound, (abfd, asect));
1345 bfd_canonicalize_reloc
1348 long bfd_canonicalize_reloc
1349 (bfd *abfd, asection *sec, arelent **loc, asymbol **syms);
1352 Call the back end associated with the open BFD
1353 @var{abfd} and translate the external form of the relocation
1354 information attached to @var{sec} into the internal canonical
1355 form. Place the table into memory at @var{loc}, which has
1356 been preallocated, usually by a call to
1357 <<bfd_get_reloc_upper_bound>>. Returns the number of relocs, or
1360 The @var{syms} table is also needed for horrible internal magic
1365 bfd_canonicalize_reloc (bfd *abfd,
1370 if (abfd->format != bfd_object)
1372 bfd_set_error (bfd_error_invalid_operation);
1376 return BFD_SEND (abfd, _bfd_canonicalize_reloc,
1377 (abfd, asect, location, symbols));
1386 (bfd *abfd, asection *sec, arelent **rel, unsigned int count);
1389 Set the relocation pointer and count within
1390 section @var{sec} to the values @var{rel} and @var{count}.
1391 The argument @var{abfd} is ignored.
1393 .#define bfd_set_reloc(abfd, asect, location, count) \
1394 . BFD_SEND (abfd, _bfd_set_reloc, (abfd, asect, location, count))
1402 bfd_boolean bfd_set_file_flags (bfd *abfd, flagword flags);
1405 Set the flag word in the BFD @var{abfd} to the value @var{flags}.
1407 Possible errors are:
1408 o <<bfd_error_wrong_format>> - The target bfd was not of object format.
1409 o <<bfd_error_invalid_operation>> - The target bfd was open for reading.
1410 o <<bfd_error_invalid_operation>> -
1411 The flag word contained a bit which was not applicable to the
1412 type of file. E.g., an attempt was made to set the <<D_PAGED>> bit
1413 on a BFD format which does not support demand paging.
1418 bfd_set_file_flags (bfd *abfd, flagword flags)
1420 if (abfd->format != bfd_object)
1422 bfd_set_error (bfd_error_wrong_format);
1426 if (bfd_read_p (abfd))
1428 bfd_set_error (bfd_error_invalid_operation);
1432 bfd_get_file_flags (abfd) = flags;
1433 if ((flags & bfd_applicable_file_flags (abfd)) != flags)
1435 bfd_set_error (bfd_error_invalid_operation);
1443 bfd_assert (const char *file, int line)
1445 /* xgettext:c-format */
1446 (*_bfd_assert_handler) (_("BFD %s assertion fail %s:%d"),
1447 BFD_VERSION_STRING, file, line);
1450 /* A more or less friendly abort message. In libbfd.h abort is
1451 defined to call this function. */
1454 _bfd_abort (const char *file, int line, const char *fn)
1458 /* xgettext:c-format */
1459 (_("BFD %s internal error, aborting at %s:%d in %s\n"),
1460 BFD_VERSION_STRING, file, line, fn);
1463 /* xgettext:c-format */
1464 (_("BFD %s internal error, aborting at %s:%d\n"),
1465 BFD_VERSION_STRING, file, line);
1466 _bfd_error_handler (_("Please report this bug.\n"));
1467 _exit (EXIT_FAILURE);
1475 int bfd_get_arch_size (bfd *abfd);
1478 Returns the normalized architecture address size, in bits, as
1479 determined by the object file's format. By normalized, we mean
1480 either 32 or 64. For ELF, this information is included in the
1481 header. Use bfd_arch_bits_per_address for number of bits in
1482 the architecture address.
1485 Returns the arch size in bits if known, <<-1>> otherwise.
1489 bfd_get_arch_size (bfd *abfd)
1491 if (abfd->xvec->flavour == bfd_target_elf_flavour)
1492 return get_elf_backend_data (abfd)->s->arch_size;
1494 return bfd_arch_bits_per_address (abfd) > 32 ? 64 : 32;
1499 bfd_get_sign_extend_vma
1502 int bfd_get_sign_extend_vma (bfd *abfd);
1505 Indicates if the target architecture "naturally" sign extends
1506 an address. Some architectures implicitly sign extend address
1507 values when they are converted to types larger than the size
1508 of an address. For instance, bfd_get_start_address() will
1509 return an address sign extended to fill a bfd_vma when this is
1513 Returns <<1>> if the target architecture is known to sign
1514 extend addresses, <<0>> if the target architecture is known to
1515 not sign extend addresses, and <<-1>> otherwise.
1519 bfd_get_sign_extend_vma (bfd *abfd)
1523 if (bfd_get_flavour (abfd) == bfd_target_elf_flavour)
1524 return get_elf_backend_data (abfd)->sign_extend_vma;
1526 name = bfd_get_target (abfd);
1528 /* Return a proper value for DJGPP & PE COFF.
1529 This function is required for DWARF2 support, but there is
1530 no place to store this information in the COFF back end.
1531 Should enough other COFF targets add support for DWARF2,
1532 a place will have to be found. Until then, this hack will do. */
1533 if (CONST_STRNEQ (name, "coff-go32")
1534 || strcmp (name, "pe-i386") == 0
1535 || strcmp (name, "pei-i386") == 0
1536 || strcmp (name, "pe-x86-64") == 0
1537 || strcmp (name, "pei-x86-64") == 0
1538 || strcmp (name, "pe-arm-wince-little") == 0
1539 || strcmp (name, "pei-arm-wince-little") == 0
1540 || strcmp (name, "aixcoff-rs6000") == 0
1541 || strcmp (name, "aix5coff64-rs6000") == 0)
1544 if (CONST_STRNEQ (name, "mach-o"))
1547 bfd_set_error (bfd_error_wrong_format);
1553 bfd_set_start_address
1556 bfd_boolean bfd_set_start_address (bfd *abfd, bfd_vma vma);
1559 Make @var{vma} the entry point of output BFD @var{abfd}.
1562 Returns <<TRUE>> on success, <<FALSE>> otherwise.
1566 bfd_set_start_address (bfd *abfd, bfd_vma vma)
1568 abfd->start_address = vma;
1577 unsigned int bfd_get_gp_size (bfd *abfd);
1580 Return the maximum size of objects to be optimized using the GP
1581 register under MIPS ECOFF. This is typically set by the <<-G>>
1582 argument to the compiler, assembler or linker.
1586 bfd_get_gp_size (bfd *abfd)
1588 if (abfd->format == bfd_object)
1590 if (abfd->xvec->flavour == bfd_target_ecoff_flavour)
1591 return ecoff_data (abfd)->gp_size;
1592 else if (abfd->xvec->flavour == bfd_target_elf_flavour)
1593 return elf_gp_size (abfd);
1603 void bfd_set_gp_size (bfd *abfd, unsigned int i);
1606 Set the maximum size of objects to be optimized using the GP
1607 register under ECOFF or MIPS ELF. This is typically set by
1608 the <<-G>> argument to the compiler, assembler or linker.
1612 bfd_set_gp_size (bfd *abfd, unsigned int i)
1614 /* Don't try to set GP size on an archive or core file! */
1615 if (abfd->format != bfd_object)
1618 if (abfd->xvec->flavour == bfd_target_ecoff_flavour)
1619 ecoff_data (abfd)->gp_size = i;
1620 else if (abfd->xvec->flavour == bfd_target_elf_flavour)
1621 elf_gp_size (abfd) = i;
1624 /* Get the GP value. This is an internal function used by some of the
1625 relocation special_function routines on targets which support a GP
1629 _bfd_get_gp_value (bfd *abfd)
1633 if (abfd->format != bfd_object)
1636 if (abfd->xvec->flavour == bfd_target_ecoff_flavour)
1637 return ecoff_data (abfd)->gp;
1638 else if (abfd->xvec->flavour == bfd_target_elf_flavour)
1639 return elf_gp (abfd);
1644 /* Set the GP value. */
1647 _bfd_set_gp_value (bfd *abfd, bfd_vma v)
1651 if (abfd->format != bfd_object)
1654 if (abfd->xvec->flavour == bfd_target_ecoff_flavour)
1655 ecoff_data (abfd)->gp = v;
1656 else if (abfd->xvec->flavour == bfd_target_elf_flavour)
1665 bfd_vma bfd_scan_vma (const char *string, const char **end, int base);
1668 Convert, like <<strtoul>>, a numerical expression
1669 @var{string} into a <<bfd_vma>> integer, and return that integer.
1670 (Though without as many bells and whistles as <<strtoul>>.)
1671 The expression is assumed to be unsigned (i.e., positive).
1672 If given a @var{base}, it is used as the base for conversion.
1673 A base of 0 causes the function to interpret the string
1674 in hex if a leading "0x" or "0X" is found, otherwise
1675 in octal if a leading zero is found, otherwise in decimal.
1677 If the value would overflow, the maximum <<bfd_vma>> value is
1682 bfd_scan_vma (const char *string, const char **end, int base)
1686 unsigned int cutlim;
1689 /* Let the host do it if possible. */
1690 if (sizeof (bfd_vma) <= sizeof (unsigned long))
1691 return strtoul (string, (char **) end, base);
1693 #if defined (HAVE_STRTOULL) && defined (HAVE_LONG_LONG)
1694 if (sizeof (bfd_vma) <= sizeof (unsigned long long))
1695 return strtoull (string, (char **) end, base);
1700 if (string[0] == '0')
1702 if ((string[1] == 'x') || (string[1] == 'X'))
1709 if ((base < 2) || (base > 36))
1714 && (string[1] == 'x' || string[1] == 'X')
1715 && ISXDIGIT (string[2]))
1720 cutoff = (~ (bfd_vma) 0) / (bfd_vma) base;
1721 cutlim = (~ (bfd_vma) 0) % (bfd_vma) base;
1729 if (ISDIGIT (digit))
1730 digit = digit - '0';
1731 else if (ISALPHA (digit))
1732 digit = TOUPPER (digit) - 'A' + 10;
1735 if (digit >= (unsigned int) base)
1737 if (value > cutoff || (value == cutoff && digit > cutlim))
1739 value = value * base + digit;
1744 value = ~ (bfd_vma) 0;
1754 bfd_copy_private_header_data
1757 bfd_boolean bfd_copy_private_header_data (bfd *ibfd, bfd *obfd);
1760 Copy private BFD header information from the BFD @var{ibfd} to the
1761 the BFD @var{obfd}. This copies information that may require
1762 sections to exist, but does not require symbol tables. Return
1763 <<true>> on success, <<false>> on error.
1764 Possible error returns are:
1766 o <<bfd_error_no_memory>> -
1767 Not enough memory exists to create private data for @var{obfd}.
1769 .#define bfd_copy_private_header_data(ibfd, obfd) \
1770 . BFD_SEND (obfd, _bfd_copy_private_header_data, \
1777 bfd_copy_private_bfd_data
1780 bfd_boolean bfd_copy_private_bfd_data (bfd *ibfd, bfd *obfd);
1783 Copy private BFD information from the BFD @var{ibfd} to the
1784 the BFD @var{obfd}. Return <<TRUE>> on success, <<FALSE>> on error.
1785 Possible error returns are:
1787 o <<bfd_error_no_memory>> -
1788 Not enough memory exists to create private data for @var{obfd}.
1790 .#define bfd_copy_private_bfd_data(ibfd, obfd) \
1791 . BFD_SEND (obfd, _bfd_copy_private_bfd_data, \
1798 bfd_set_private_flags
1801 bfd_boolean bfd_set_private_flags (bfd *abfd, flagword flags);
1804 Set private BFD flag information in the BFD @var{abfd}.
1805 Return <<TRUE>> on success, <<FALSE>> on error. Possible error
1808 o <<bfd_error_no_memory>> -
1809 Not enough memory exists to create private data for @var{obfd}.
1811 .#define bfd_set_private_flags(abfd, flags) \
1812 . BFD_SEND (abfd, _bfd_set_private_flags, (abfd, flags))
1821 The following functions exist but have not yet been documented.
1823 .#define bfd_sizeof_headers(abfd, info) \
1824 . BFD_SEND (abfd, _bfd_sizeof_headers, (abfd, info))
1826 .#define bfd_find_nearest_line(abfd, sec, syms, off, file, func, line) \
1827 . BFD_SEND (abfd, _bfd_find_nearest_line, \
1828 . (abfd, syms, sec, off, file, func, line, NULL))
1830 .#define bfd_find_nearest_line_discriminator(abfd, sec, syms, off, file, func, \
1832 . BFD_SEND (abfd, _bfd_find_nearest_line, \
1833 . (abfd, syms, sec, off, file, func, line, disc))
1835 .#define bfd_find_line(abfd, syms, sym, file, line) \
1836 . BFD_SEND (abfd, _bfd_find_line, \
1837 . (abfd, syms, sym, file, line))
1839 .#define bfd_find_inliner_info(abfd, file, func, line) \
1840 . BFD_SEND (abfd, _bfd_find_inliner_info, \
1841 . (abfd, file, func, line))
1843 .#define bfd_debug_info_start(abfd) \
1844 . BFD_SEND (abfd, _bfd_debug_info_start, (abfd))
1846 .#define bfd_debug_info_end(abfd) \
1847 . BFD_SEND (abfd, _bfd_debug_info_end, (abfd))
1849 .#define bfd_debug_info_accumulate(abfd, section) \
1850 . BFD_SEND (abfd, _bfd_debug_info_accumulate, (abfd, section))
1852 .#define bfd_stat_arch_elt(abfd, stat) \
1853 . BFD_SEND (abfd, _bfd_stat_arch_elt,(abfd, stat))
1855 .#define bfd_update_armap_timestamp(abfd) \
1856 . BFD_SEND (abfd, _bfd_update_armap_timestamp, (abfd))
1858 .#define bfd_set_arch_mach(abfd, arch, mach)\
1859 . BFD_SEND ( abfd, _bfd_set_arch_mach, (abfd, arch, mach))
1861 .#define bfd_relax_section(abfd, section, link_info, again) \
1862 . BFD_SEND (abfd, _bfd_relax_section, (abfd, section, link_info, again))
1864 .#define bfd_gc_sections(abfd, link_info) \
1865 . BFD_SEND (abfd, _bfd_gc_sections, (abfd, link_info))
1867 .#define bfd_lookup_section_flags(link_info, flag_info, section) \
1868 . BFD_SEND (abfd, _bfd_lookup_section_flags, (link_info, flag_info, section))
1870 .#define bfd_merge_sections(abfd, link_info) \
1871 . BFD_SEND (abfd, _bfd_merge_sections, (abfd, link_info))
1873 .#define bfd_is_group_section(abfd, sec) \
1874 . BFD_SEND (abfd, _bfd_is_group_section, (abfd, sec))
1876 .#define bfd_discard_group(abfd, sec) \
1877 . BFD_SEND (abfd, _bfd_discard_group, (abfd, sec))
1879 .#define bfd_link_hash_table_create(abfd) \
1880 . BFD_SEND (abfd, _bfd_link_hash_table_create, (abfd))
1882 .#define bfd_link_add_symbols(abfd, info) \
1883 . BFD_SEND (abfd, _bfd_link_add_symbols, (abfd, info))
1885 .#define bfd_link_just_syms(abfd, sec, info) \
1886 . BFD_SEND (abfd, _bfd_link_just_syms, (sec, info))
1888 .#define bfd_final_link(abfd, info) \
1889 . BFD_SEND (abfd, _bfd_final_link, (abfd, info))
1891 .#define bfd_free_cached_info(abfd) \
1892 . BFD_SEND (abfd, _bfd_free_cached_info, (abfd))
1894 .#define bfd_get_dynamic_symtab_upper_bound(abfd) \
1895 . BFD_SEND (abfd, _bfd_get_dynamic_symtab_upper_bound, (abfd))
1897 .#define bfd_print_private_bfd_data(abfd, file)\
1898 . BFD_SEND (abfd, _bfd_print_private_bfd_data, (abfd, file))
1900 .#define bfd_canonicalize_dynamic_symtab(abfd, asymbols) \
1901 . BFD_SEND (abfd, _bfd_canonicalize_dynamic_symtab, (abfd, asymbols))
1903 .#define bfd_get_synthetic_symtab(abfd, count, syms, dyncount, dynsyms, ret) \
1904 . BFD_SEND (abfd, _bfd_get_synthetic_symtab, (abfd, count, syms, \
1905 . dyncount, dynsyms, ret))
1907 .#define bfd_get_dynamic_reloc_upper_bound(abfd) \
1908 . BFD_SEND (abfd, _bfd_get_dynamic_reloc_upper_bound, (abfd))
1910 .#define bfd_canonicalize_dynamic_reloc(abfd, arels, asyms) \
1911 . BFD_SEND (abfd, _bfd_canonicalize_dynamic_reloc, (abfd, arels, asyms))
1913 .extern bfd_byte *bfd_get_relocated_section_contents
1914 . (bfd *, struct bfd_link_info *, struct bfd_link_order *, bfd_byte *,
1915 . bfd_boolean, asymbol **);
1921 bfd_get_relocated_section_contents (bfd *abfd,
1922 struct bfd_link_info *link_info,
1923 struct bfd_link_order *link_order,
1925 bfd_boolean relocatable,
1929 bfd_byte *(*fn) (bfd *, struct bfd_link_info *, struct bfd_link_order *,
1930 bfd_byte *, bfd_boolean, asymbol **);
1932 if (link_order->type == bfd_indirect_link_order)
1934 abfd2 = link_order->u.indirect.section->owner;
1941 fn = abfd2->xvec->_bfd_get_relocated_section_contents;
1943 return (*fn) (abfd, link_info, link_order, data, relocatable, symbols);
1946 /* Record information about an ELF program header. */
1949 bfd_record_phdr (bfd *abfd,
1951 bfd_boolean flags_valid,
1953 bfd_boolean at_valid,
1955 bfd_boolean includes_filehdr,
1956 bfd_boolean includes_phdrs,
1960 struct elf_segment_map *m, **pm;
1963 if (bfd_get_flavour (abfd) != bfd_target_elf_flavour)
1966 amt = sizeof (struct elf_segment_map);
1967 amt += ((bfd_size_type) count - 1) * sizeof (asection *);
1968 m = (struct elf_segment_map *) bfd_zalloc (abfd, amt);
1975 m->p_flags_valid = flags_valid;
1976 m->p_paddr_valid = at_valid;
1977 m->includes_filehdr = includes_filehdr;
1978 m->includes_phdrs = includes_phdrs;
1981 memcpy (m->sections, secs, count * sizeof (asection *));
1983 for (pm = &elf_seg_map (abfd); *pm != NULL; pm = &(*pm)->next)
1991 /* Return true iff this target is 32-bit. */
1996 if (bfd_get_flavour (abfd) == bfd_target_elf_flavour)
1998 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
1999 return bed->s->elfclass == ELFCLASS32;
2002 /* For non-ELF targets, use architecture information. */
2003 return bfd_arch_bits_per_address (abfd) <= 32;
2007 /* bfd_sprintf_vma and bfd_fprintf_vma display an address in the
2008 target's address size. */
2011 bfd_sprintf_vma (bfd *abfd ATTRIBUTE_UNUSED, char *buf, bfd_vma value)
2016 sprintf (buf, "%08lx", (unsigned long) value & 0xffffffff);
2020 sprintf_vma (buf, value);
2024 bfd_fprintf_vma (bfd *abfd ATTRIBUTE_UNUSED, void *stream, bfd_vma value)
2029 fprintf ((FILE *) stream, "%08lx", (unsigned long) value & 0xffffffff);
2033 fprintf_vma ((FILE *) stream, value);
2041 bfd_boolean bfd_alt_mach_code (bfd *abfd, int alternative);
2045 When more than one machine code number is available for the
2046 same machine type, this function can be used to switch between
2047 the preferred one (alternative == 0) and any others. Currently,
2048 only ELF supports this feature, with up to two alternate
2053 bfd_alt_mach_code (bfd *abfd, int alternative)
2055 if (bfd_get_flavour (abfd) == bfd_target_elf_flavour)
2059 switch (alternative)
2062 code = get_elf_backend_data (abfd)->elf_machine_code;
2066 code = get_elf_backend_data (abfd)->elf_machine_alt1;
2072 code = get_elf_backend_data (abfd)->elf_machine_alt2;
2081 elf_elfheader (abfd)->e_machine = code;
2091 bfd_emul_get_maxpagesize
2094 bfd_vma bfd_emul_get_maxpagesize (const char *);
2097 Returns the maximum page size, in bytes, as determined by
2101 Returns the maximum page size in bytes for ELF, 0 otherwise.
2105 bfd_emul_get_maxpagesize (const char *emul)
2107 const bfd_target *target;
2109 target = bfd_find_target (emul, NULL);
2111 && target->flavour == bfd_target_elf_flavour)
2112 return xvec_get_elf_backend_data (target)->maxpagesize;
2118 bfd_elf_set_pagesize (const bfd_target *target, bfd_vma size,
2119 int offset, const bfd_target *orig_target)
2121 if (target->flavour == bfd_target_elf_flavour)
2123 const struct elf_backend_data *bed;
2125 bed = xvec_get_elf_backend_data (target);
2126 *((bfd_vma *) ((char *) bed + offset)) = size;
2129 if (target->alternative_target
2130 && target->alternative_target != orig_target)
2131 bfd_elf_set_pagesize (target->alternative_target, size, offset,
2137 bfd_emul_set_maxpagesize
2140 void bfd_emul_set_maxpagesize (const char *, bfd_vma);
2143 For ELF, set the maximum page size for the emulation. It is
2144 a no-op for other formats.
2149 bfd_emul_set_maxpagesize (const char *emul, bfd_vma size)
2151 const bfd_target *target;
2153 target = bfd_find_target (emul, NULL);
2155 bfd_elf_set_pagesize (target, size,
2156 offsetof (struct elf_backend_data,
2157 maxpagesize), target);
2162 bfd_emul_get_commonpagesize
2165 bfd_vma bfd_emul_get_commonpagesize (const char *);
2168 Returns the common page size, in bytes, as determined by
2172 Returns the common page size in bytes for ELF, 0 otherwise.
2176 bfd_emul_get_commonpagesize (const char *emul)
2178 const bfd_target *target;
2180 target = bfd_find_target (emul, NULL);
2182 && target->flavour == bfd_target_elf_flavour)
2183 return xvec_get_elf_backend_data (target)->commonpagesize;
2190 bfd_emul_set_commonpagesize
2193 void bfd_emul_set_commonpagesize (const char *, bfd_vma);
2196 For ELF, set the common page size for the emulation. It is
2197 a no-op for other formats.
2202 bfd_emul_set_commonpagesize (const char *emul, bfd_vma size)
2204 const bfd_target *target;
2206 target = bfd_find_target (emul, NULL);
2208 bfd_elf_set_pagesize (target, size,
2209 offsetof (struct elf_backend_data,
2210 commonpagesize), target);
2218 char *bfd_demangle (bfd *, const char *, int);
2221 Wrapper around cplus_demangle. Strips leading underscores and
2222 other such chars that would otherwise confuse the demangler.
2223 If passed a g++ v3 ABI mangled name, returns a buffer allocated
2224 with malloc holding the demangled name. Returns NULL otherwise
2225 and on memory alloc failure.
2229 bfd_demangle (bfd *abfd, const char *name, int options)
2232 const char *pre, *suf;
2234 bfd_boolean skip_lead;
2236 skip_lead = (abfd != NULL
2238 && bfd_get_symbol_leading_char (abfd) == *name);
2242 /* This is a hack for better error reporting on XCOFF, PowerPC64-ELF
2243 or the MS PE format. These formats have a number of leading '.'s
2244 on at least some symbols, so we remove all dots to avoid
2245 confusing the demangler. */
2247 while (*name == '.' || *name == '$')
2249 pre_len = name - pre;
2251 /* Strip off @plt and suchlike too. */
2253 suf = strchr (name, '@');
2256 alloc = (char *) bfd_malloc (suf - name + 1);
2259 memcpy (alloc, name, suf - name);
2260 alloc[suf - name] = '\0';
2264 res = cplus_demangle (name, options);
2273 size_t len = strlen (pre) + 1;
2274 alloc = (char *) bfd_malloc (len);
2277 memcpy (alloc, pre, len);
2283 /* Put back any prefix or suffix. */
2284 if (pre_len != 0 || suf != NULL)
2293 suf_len = strlen (suf) + 1;
2294 final = (char *) bfd_malloc (pre_len + len + suf_len);
2297 memcpy (final, pre, pre_len);
2298 memcpy (final + pre_len, res, len);
2299 memcpy (final + pre_len + len, suf, suf_len);
2310 bfd_update_compression_header
2313 void bfd_update_compression_header
2314 (bfd *abfd, bfd_byte *contents, asection *sec);
2317 Set the compression header at CONTENTS of SEC in ABFD and update
2318 elf_section_flags for compression.
2322 bfd_update_compression_header (bfd *abfd, bfd_byte *contents,
2325 if ((abfd->flags & BFD_COMPRESS) != 0)
2327 if (bfd_get_flavour (abfd) == bfd_target_elf_flavour)
2329 if ((abfd->flags & BFD_COMPRESS_GABI) != 0)
2331 const struct elf_backend_data *bed
2332 = get_elf_backend_data (abfd);
2334 /* Set the SHF_COMPRESSED bit. */
2335 elf_section_flags (sec) |= SHF_COMPRESSED;
2337 if (bed->s->elfclass == ELFCLASS32)
2339 Elf32_External_Chdr *echdr
2340 = (Elf32_External_Chdr *) contents;
2341 bfd_put_32 (abfd, ELFCOMPRESS_ZLIB, &echdr->ch_type);
2342 bfd_put_32 (abfd, sec->size, &echdr->ch_size);
2343 bfd_put_32 (abfd, 1 << sec->alignment_power,
2344 &echdr->ch_addralign);
2348 Elf64_External_Chdr *echdr
2349 = (Elf64_External_Chdr *) contents;
2350 bfd_put_32 (abfd, ELFCOMPRESS_ZLIB, &echdr->ch_type);
2351 bfd_put_32 (abfd, 0, &echdr->ch_reserved);
2352 bfd_put_64 (abfd, sec->size, &echdr->ch_size);
2353 bfd_put_64 (abfd, 1 << sec->alignment_power,
2354 &echdr->ch_addralign);
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);
2376 bfd_check_compression_header
2379 bfd_boolean bfd_check_compression_header
2380 (bfd *abfd, bfd_byte *contents, asection *sec,
2381 bfd_size_type *uncompressed_size);
2384 Check the compression header at CONTENTS of SEC in ABFD and
2385 store the uncompressed size in UNCOMPRESSED_SIZE if the
2386 compression header is valid.
2389 Return TRUE if the compression header is valid.
2393 bfd_check_compression_header (bfd *abfd, bfd_byte *contents,
2395 bfd_size_type *uncompressed_size)
2397 if (bfd_get_flavour (abfd) == bfd_target_elf_flavour
2398 && (elf_section_flags (sec) & SHF_COMPRESSED) != 0)
2400 Elf_Internal_Chdr chdr;
2401 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
2402 if (bed->s->elfclass == ELFCLASS32)
2404 Elf32_External_Chdr *echdr = (Elf32_External_Chdr *) contents;
2405 chdr.ch_type = bfd_get_32 (abfd, &echdr->ch_type);
2406 chdr.ch_size = bfd_get_32 (abfd, &echdr->ch_size);
2407 chdr.ch_addralign = bfd_get_32 (abfd, &echdr->ch_addralign);
2411 Elf64_External_Chdr *echdr = (Elf64_External_Chdr *) contents;
2412 chdr.ch_type = bfd_get_32 (abfd, &echdr->ch_type);
2413 chdr.ch_size = bfd_get_64 (abfd, &echdr->ch_size);
2414 chdr.ch_addralign = bfd_get_64 (abfd, &echdr->ch_addralign);
2416 if (chdr.ch_type == ELFCOMPRESS_ZLIB
2417 && chdr.ch_addralign == 1U << sec->alignment_power)
2419 *uncompressed_size = chdr.ch_size;
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 input file will be decompressed. */
2483 if ((ibfd->flags & BFD_DECOMPRESS))
2486 /* Do nothing if either input or output aren't ELF. */
2487 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
2488 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
2491 /* Do nothing if ELF classes of input and output are the same. */
2492 if (get_elf_backend_data (ibfd)->s->elfclass
2493 == get_elf_backend_data (obfd)->s->elfclass)
2496 /* Do nothing if the input section isn't a SHF_COMPRESSED section. */
2497 hdr_size = bfd_get_compression_header_size (ibfd, isec);
2501 /* Adjust the size of the output SHF_COMPRESSED section. */
2502 if (hdr_size == sizeof (Elf32_External_Chdr))
2503 return (size - sizeof (Elf32_External_Chdr)
2504 + sizeof (Elf64_External_Chdr));
2506 return (size - sizeof (Elf64_External_Chdr)
2507 + sizeof (Elf32_External_Chdr));
2512 bfd_convert_section_contents
2515 bfd_boolean bfd_convert_section_contents
2516 (bfd *ibfd, asection *isec, bfd *obfd,
2517 bfd_byte **ptr, bfd_size_type *ptr_size);
2520 Convert the contents, stored in @var{*ptr}, of the section
2521 @var{isec} in input BFD @var{ibfd} to output BFD @var{obfd}
2522 if needed. The original buffer pointed to by @var{*ptr} may
2523 be freed and @var{*ptr} is returned with memory malloc'd by this
2524 function, and the new size written to @var{ptr_size}.
2528 bfd_convert_section_contents (bfd *ibfd, sec_ptr isec, bfd *obfd,
2529 bfd_byte **ptr, bfd_size_type *ptr_size)
2532 bfd_size_type ihdr_size, ohdr_size, size;
2533 Elf_Internal_Chdr chdr;
2534 bfd_boolean use_memmove;
2536 /* Do nothing if input file will be decompressed. */
2537 if ((ibfd->flags & BFD_DECOMPRESS))
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 /* Do nothing if the input section isn't a SHF_COMPRESSED section. */
2551 ihdr_size = bfd_get_compression_header_size (ibfd, isec);
2557 /* Convert the contents of the input SHF_COMPRESSED section to
2558 output. Get the input compression header and the size of the
2559 output compression header. */
2560 if (ihdr_size == sizeof (Elf32_External_Chdr))
2562 Elf32_External_Chdr *echdr = (Elf32_External_Chdr *) contents;
2563 chdr.ch_type = bfd_get_32 (ibfd, &echdr->ch_type);
2564 chdr.ch_size = bfd_get_32 (ibfd, &echdr->ch_size);
2565 chdr.ch_addralign = bfd_get_32 (ibfd, &echdr->ch_addralign);
2567 ohdr_size = sizeof (Elf64_External_Chdr);
2569 use_memmove = FALSE;
2573 Elf64_External_Chdr *echdr = (Elf64_External_Chdr *) contents;
2574 chdr.ch_type = bfd_get_32 (ibfd, &echdr->ch_type);
2575 chdr.ch_size = bfd_get_64 (ibfd, &echdr->ch_size);
2576 chdr.ch_addralign = bfd_get_64 (ibfd, &echdr->ch_addralign);
2578 ohdr_size = sizeof (Elf32_External_Chdr);
2582 size = bfd_get_section_size (isec) - ihdr_size + ohdr_size;
2585 contents = (bfd_byte *) bfd_malloc (size);
2586 if (contents == NULL)
2590 /* Write out the output compression header. */
2591 if (ohdr_size == sizeof (Elf32_External_Chdr))
2593 Elf32_External_Chdr *echdr = (Elf32_External_Chdr *) contents;
2594 bfd_put_32 (obfd, ELFCOMPRESS_ZLIB, &echdr->ch_type);
2595 bfd_put_32 (obfd, chdr.ch_size, &echdr->ch_size);
2596 bfd_put_32 (obfd, chdr.ch_addralign, &echdr->ch_addralign);
2600 Elf64_External_Chdr *echdr = (Elf64_External_Chdr *) contents;
2601 bfd_put_32 (obfd, ELFCOMPRESS_ZLIB, &echdr->ch_type);
2602 bfd_put_32 (obfd, 0, &echdr->ch_reserved);
2603 bfd_put_64 (obfd, chdr.ch_size, &echdr->ch_size);
2604 bfd_put_64 (obfd, chdr.ch_addralign, &echdr->ch_addralign);
2607 /* Copy the compressed contents. */
2609 memmove (contents + ohdr_size, *ptr + ihdr_size, size - ohdr_size);
2612 memcpy (contents + ohdr_size, *ptr + ihdr_size, size - ohdr_size);