* gas/elf/elf.exp: Don't run tests on "*-*-linux*aout*" or
[binutils.git] / bfd / bfd.c
blob597e8f0bc687aef1455fa6652f18e4b3b149d138
1 /* Generic BFD library interface and support routines.
2 Copyright (C) 1990, 91, 92, 93, 94, 95, 96, 97, 1998
3 Free Software Foundation, Inc.
4 Written by Cygnus Support.
6 This file is part of BFD, the Binary File Descriptor library.
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
23 SECTION
24 <<typedef bfd>>
26 A BFD has type <<bfd>>; objects of this type are the
27 cornerstone of any application using BFD. Using BFD
28 consists of making references though the BFD and to data in the BFD.
30 Here is the structure that defines the type <<bfd>>. It
31 contains the major data about the file and pointers
32 to the rest of the data.
34 CODE_FRAGMENT
36 .struct _bfd
38 . {* The filename the application opened the BFD with. *}
39 . CONST char *filename;
41 . {* A pointer to the target jump table. *}
42 . const struct bfd_target *xvec;
44 . {* To avoid dragging too many header files into every file that
45 . includes `<<bfd.h>>', IOSTREAM has been declared as a "char
46 . *", and MTIME as a "long". Their correct types, to which they
47 . are cast when used, are "FILE *" and "time_t". The iostream
48 . is the result of an fopen on the filename. However, if the
49 . BFD_IN_MEMORY flag is set, then iostream is actually a pointer
50 . to a bfd_in_memory struct. *}
51 . PTR iostream;
53 . {* Is the file descriptor being cached? That is, can it be closed as
54 . needed, and re-opened when accessed later? *}
56 . boolean cacheable;
58 . {* Marks whether there was a default target specified when the
59 . BFD was opened. This is used to select which matching algorithm
60 . to use to choose the back end. *}
62 . boolean target_defaulted;
64 . {* The caching routines use these to maintain a
65 . least-recently-used list of BFDs *}
67 . struct _bfd *lru_prev, *lru_next;
69 . {* When a file is closed by the caching routines, BFD retains
70 . state information on the file here: *}
72 . file_ptr where;
74 . {* and here: (``once'' means at least once) *}
76 . boolean opened_once;
78 . {* Set if we have a locally maintained mtime value, rather than
79 . getting it from the file each time: *}
81 . boolean mtime_set;
83 . {* File modified time, if mtime_set is true: *}
85 . long mtime;
87 . {* Reserved for an unimplemented file locking extension.*}
89 . int ifd;
91 . {* The format which belongs to the BFD. (object, core, etc.) *}
93 . bfd_format format;
95 . {* The direction the BFD was opened with*}
97 . enum bfd_direction {no_direction = 0,
98 . read_direction = 1,
99 . write_direction = 2,
100 . both_direction = 3} direction;
102 . {* Format_specific flags*}
104 . flagword flags;
106 . {* Currently my_archive is tested before adding origin to
107 . anything. I believe that this can become always an add of
108 . origin, with origin set to 0 for non archive files. *}
110 . file_ptr origin;
112 . {* Remember when output has begun, to stop strange things
113 . from happening. *}
114 . boolean output_has_begun;
116 . {* Pointer to linked list of sections*}
117 . struct sec *sections;
119 . {* The number of sections *}
120 . unsigned int section_count;
122 . {* Stuff only useful for object files:
123 . The start address. *}
124 . bfd_vma start_address;
126 . {* Used for input and output*}
127 . unsigned int symcount;
129 . {* Symbol table for output BFD (with symcount entries) *}
130 . struct symbol_cache_entry **outsymbols;
132 . {* Pointer to structure which contains architecture information*}
133 . const struct bfd_arch_info *arch_info;
135 . {* Stuff only useful for archives:*}
136 . PTR arelt_data;
137 . struct _bfd *my_archive; {* The containing archive BFD. *}
138 . struct _bfd *next; {* The next BFD in the archive. *}
139 . struct _bfd *archive_head; {* The first BFD in the archive. *}
140 . boolean has_armap;
142 . {* A chain of BFD structures involved in a link. *}
143 . struct _bfd *link_next;
145 . {* A field used by _bfd_generic_link_add_archive_symbols. This will
146 . be used only for archive elements. *}
147 . int archive_pass;
149 . {* Used by the back end to hold private data. *}
151 . union
153 . struct aout_data_struct *aout_data;
154 . struct artdata *aout_ar_data;
155 . struct _oasys_data *oasys_obj_data;
156 . struct _oasys_ar_data *oasys_ar_data;
157 . struct coff_tdata *coff_obj_data;
158 . struct pe_tdata *pe_obj_data;
159 . struct xcoff_tdata *xcoff_obj_data;
160 . struct ecoff_tdata *ecoff_obj_data;
161 . struct ieee_data_struct *ieee_data;
162 . struct ieee_ar_data_struct *ieee_ar_data;
163 . struct srec_data_struct *srec_data;
164 . struct ihex_data_struct *ihex_data;
165 . struct tekhex_data_struct *tekhex_data;
166 . struct elf_obj_tdata *elf_obj_data;
167 . struct nlm_obj_tdata *nlm_obj_data;
168 . struct bout_data_struct *bout_data;
169 . struct sun_core_struct *sun_core_data;
170 . struct sco5_core_struct *sco5_core_data;
171 . struct trad_core_struct *trad_core_data;
172 . struct som_data_struct *som_data;
173 . struct hpux_core_struct *hpux_core_data;
174 . struct hppabsd_core_struct *hppabsd_core_data;
175 . struct sgi_core_struct *sgi_core_data;
176 . struct lynx_core_struct *lynx_core_data;
177 . struct osf_core_struct *osf_core_data;
178 . struct cisco_core_struct *cisco_core_data;
179 . struct versados_data_struct *versados_data;
180 . struct netbsd_core_struct *netbsd_core_data;
181 . PTR any;
182 . } tdata;
184 . {* Used by the application to hold private data*}
185 . PTR usrdata;
187 . {* Where all the allocated stuff under this BFD goes. This is a
188 . struct objalloc *, but we use PTR to avoid requiring the inclusion of
189 . objalloc.h. *}
190 . PTR memory;
195 #include "bfd.h"
196 #include "sysdep.h"
198 #ifdef ANSI_PROTOTYPES
199 #include <stdarg.h>
200 #else
201 #include <varargs.h>
202 #endif
204 #include "libiberty.h"
205 #include "bfdlink.h"
206 #include "libbfd.h"
207 #include "coff/internal.h"
208 #include "coff/sym.h"
209 #include "libcoff.h"
210 #include "libecoff.h"
211 #undef obj_symbols
212 #include "elf-bfd.h"
214 #include <ctype.h>
216 /* provide storage for subsystem, stack and heap data which may have been
217 passed in on the command line. Ld puts this data into a bfd_link_info
218 struct which ultimately gets passed in to the bfd. When it arrives, copy
219 it to the following struct so that the data will be available in coffcode.h
220 where it is needed. The typedef's used are defined in bfd.h */
225 SECTION
226 Error reporting
228 Most BFD functions return nonzero on success (check their
229 individual documentation for precise semantics). On an error,
230 they call <<bfd_set_error>> to set an error condition that callers
231 can check by calling <<bfd_get_error>>.
232 If that returns <<bfd_error_system_call>>, then check
233 <<errno>>.
235 The easiest way to report a BFD error to the user is to
236 use <<bfd_perror>>.
238 SUBSECTION
239 Type <<bfd_error_type>>
241 The values returned by <<bfd_get_error>> are defined by the
242 enumerated type <<bfd_error_type>>.
244 CODE_FRAGMENT
246 .typedef enum bfd_error
248 . bfd_error_no_error = 0,
249 . bfd_error_system_call,
250 . bfd_error_invalid_target,
251 . bfd_error_wrong_format,
252 . bfd_error_invalid_operation,
253 . bfd_error_no_memory,
254 . bfd_error_no_symbols,
255 . bfd_error_no_armap,
256 . bfd_error_no_more_archived_files,
257 . bfd_error_malformed_archive,
258 . bfd_error_file_not_recognized,
259 . bfd_error_file_ambiguously_recognized,
260 . bfd_error_no_contents,
261 . bfd_error_nonrepresentable_section,
262 . bfd_error_no_debug_section,
263 . bfd_error_bad_value,
264 . bfd_error_file_truncated,
265 . bfd_error_file_too_big,
266 . bfd_error_invalid_error_code
267 .} bfd_error_type;
271 static bfd_error_type bfd_error = bfd_error_no_error;
273 CONST char *CONST bfd_errmsgs[] = {
274 N_("No error"),
275 N_("System call error"),
276 N_("Invalid bfd target"),
277 N_("File in wrong format"),
278 N_("Invalid operation"),
279 N_("Memory exhausted"),
280 N_("No symbols"),
281 N_("Archive has no index; run ranlib to add one"),
282 N_("No more archived files"),
283 N_("Malformed archive"),
284 N_("File format not recognized"),
285 N_("File format is ambiguous"),
286 N_("Section has no contents"),
287 N_("Nonrepresentable section on output"),
288 N_("Symbol needs debug section which does not exist"),
289 N_("Bad value"),
290 N_("File truncated"),
291 N_("File too big"),
292 N_("#<Invalid error code>")
296 FUNCTION
297 bfd_get_error
299 SYNOPSIS
300 bfd_error_type bfd_get_error (void);
302 DESCRIPTION
303 Return the current BFD error condition.
306 bfd_error_type
307 bfd_get_error ()
309 return bfd_error;
313 FUNCTION
314 bfd_set_error
316 SYNOPSIS
317 void bfd_set_error (bfd_error_type error_tag);
319 DESCRIPTION
320 Set the BFD error condition to be @var{error_tag}.
323 void
324 bfd_set_error (error_tag)
325 bfd_error_type error_tag;
327 bfd_error = error_tag;
331 FUNCTION
332 bfd_errmsg
334 SYNOPSIS
335 CONST char *bfd_errmsg (bfd_error_type error_tag);
337 DESCRIPTION
338 Return a string describing the error @var{error_tag}, or
339 the system error if @var{error_tag} is <<bfd_error_system_call>>.
342 CONST char *
343 bfd_errmsg (error_tag)
344 bfd_error_type error_tag;
346 #ifndef errno
347 extern int errno;
348 #endif
349 if (error_tag == bfd_error_system_call)
350 return xstrerror (errno);
352 if ((((int)error_tag <(int) bfd_error_no_error) ||
353 ((int)error_tag > (int)bfd_error_invalid_error_code)))
354 error_tag = bfd_error_invalid_error_code;/* sanity check */
356 return _(bfd_errmsgs [(int)error_tag]);
360 FUNCTION
361 bfd_perror
363 SYNOPSIS
364 void bfd_perror (CONST char *message);
366 DESCRIPTION
367 Print to the standard error stream a string describing the
368 last BFD error that occurred, or the last system error if
369 the last BFD error was a system call failure. If @var{message}
370 is non-NULL and non-empty, the error string printed is preceded
371 by @var{message}, a colon, and a space. It is followed by a newline.
374 void
375 bfd_perror (message)
376 CONST char *message;
378 if (bfd_get_error () == bfd_error_system_call)
379 perror((char *)message); /* must be system error then... */
380 else {
381 if (message == NULL || *message == '\0')
382 fprintf (stderr, "%s\n", bfd_errmsg (bfd_get_error ()));
383 else
384 fprintf (stderr, "%s: %s\n", message, bfd_errmsg (bfd_get_error ()));
389 SUBSECTION
390 BFD error handler
392 Some BFD functions want to print messages describing the
393 problem. They call a BFD error handler function. This
394 function may be overriden by the program.
396 The BFD error handler acts like printf.
398 CODE_FRAGMENT
400 .typedef void (*bfd_error_handler_type) PARAMS ((const char *, ...));
404 /* The program name used when printing BFD error messages. */
406 static const char *_bfd_error_program_name;
408 /* This is the default routine to handle BFD error messages. */
410 #ifdef ANSI_PROTOTYPES
412 static void _bfd_default_error_handler PARAMS ((const char *s, ...));
414 static void
415 _bfd_default_error_handler (const char *s, ...)
417 va_list p;
419 if (_bfd_error_program_name != NULL)
420 fprintf (stderr, "%s: ", _bfd_error_program_name);
421 else
422 fprintf (stderr, "BFD: ");
424 va_start (p, s);
426 vfprintf (stderr, s, p);
428 va_end (p);
430 fprintf (stderr, "\n");
433 #else /* ! defined (ANSI_PROTOTYPES) */
435 static void _bfd_default_error_handler ();
437 static void
438 _bfd_default_error_handler (va_alist)
439 va_dcl
441 va_list p;
442 const char *s;
444 if (_bfd_error_program_name != NULL)
445 fprintf (stderr, "%s: ", _bfd_error_program_name);
446 else
447 fprintf (stderr, "BFD: ");
449 va_start (p);
451 s = va_arg (p, const char *);
452 vfprintf (stderr, s, p);
454 va_end (p);
456 fprintf (stderr, "\n");
459 #endif /* ! defined (ANSI_PROTOTYPES) */
461 /* This is a function pointer to the routine which should handle BFD
462 error messages. It is called when a BFD routine encounters an
463 error for which it wants to print a message. Going through a
464 function pointer permits a program linked against BFD to intercept
465 the messages and deal with them itself. */
467 bfd_error_handler_type _bfd_error_handler = _bfd_default_error_handler;
470 FUNCTION
471 bfd_set_error_handler
473 SYNOPSIS
474 bfd_error_handler_type bfd_set_error_handler (bfd_error_handler_type);
476 DESCRIPTION
477 Set the BFD error handler function. Returns the previous
478 function.
481 bfd_error_handler_type
482 bfd_set_error_handler (pnew)
483 bfd_error_handler_type pnew;
485 bfd_error_handler_type pold;
487 pold = _bfd_error_handler;
488 _bfd_error_handler = pnew;
489 return pold;
493 FUNCTION
494 bfd_set_error_program_name
496 SYNOPSIS
497 void bfd_set_error_program_name (const char *);
499 DESCRIPTION
500 Set the program name to use when printing a BFD error. This
501 is printed before the error message followed by a colon and
502 space. The string must not be changed after it is passed to
503 this function.
506 void
507 bfd_set_error_program_name (name)
508 const char *name;
510 _bfd_error_program_name = name;
515 FUNCTION
516 bfd_get_error_handler
518 SYNOPSIS
519 bfd_error_handler_type bfd_get_error_handler (void);
521 DESCRIPTION
522 Return the BFD error handler function.
525 bfd_error_handler_type
526 bfd_get_error_handler ()
528 return _bfd_error_handler;
532 SECTION
533 Symbols
537 FUNCTION
538 bfd_get_reloc_upper_bound
540 SYNOPSIS
541 long bfd_get_reloc_upper_bound(bfd *abfd, asection *sect);
543 DESCRIPTION
544 Return the number of bytes required to store the
545 relocation information associated with section @var{sect}
546 attached to bfd @var{abfd}. If an error occurs, return -1.
551 long
552 bfd_get_reloc_upper_bound (abfd, asect)
553 bfd *abfd;
554 sec_ptr asect;
556 if (abfd->format != bfd_object) {
557 bfd_set_error (bfd_error_invalid_operation);
558 return -1;
561 return BFD_SEND (abfd, _get_reloc_upper_bound, (abfd, asect));
565 FUNCTION
566 bfd_canonicalize_reloc
568 SYNOPSIS
569 long bfd_canonicalize_reloc
570 (bfd *abfd,
571 asection *sec,
572 arelent **loc,
573 asymbol **syms);
575 DESCRIPTION
576 Call the back end associated with the open BFD
577 @var{abfd} and translate the external form of the relocation
578 information attached to @var{sec} into the internal canonical
579 form. Place the table into memory at @var{loc}, which has
580 been preallocated, usually by a call to
581 <<bfd_get_reloc_upper_bound>>. Returns the number of relocs, or
582 -1 on error.
584 The @var{syms} table is also needed for horrible internal magic
585 reasons.
589 long
590 bfd_canonicalize_reloc (abfd, asect, location, symbols)
591 bfd *abfd;
592 sec_ptr asect;
593 arelent **location;
594 asymbol **symbols;
596 if (abfd->format != bfd_object) {
597 bfd_set_error (bfd_error_invalid_operation);
598 return -1;
600 return BFD_SEND (abfd, _bfd_canonicalize_reloc,
601 (abfd, asect, location, symbols));
605 FUNCTION
606 bfd_set_reloc
608 SYNOPSIS
609 void bfd_set_reloc
610 (bfd *abfd, asection *sec, arelent **rel, unsigned int count)
612 DESCRIPTION
613 Set the relocation pointer and count within
614 section @var{sec} to the values @var{rel} and @var{count}.
615 The argument @var{abfd} is ignored.
618 /*ARGSUSED*/
619 void
620 bfd_set_reloc (ignore_abfd, asect, location, count)
621 bfd *ignore_abfd;
622 sec_ptr asect;
623 arelent **location;
624 unsigned int count;
626 asect->orelocation = location;
627 asect->reloc_count = count;
631 FUNCTION
632 bfd_set_file_flags
634 SYNOPSIS
635 boolean bfd_set_file_flags(bfd *abfd, flagword flags);
637 DESCRIPTION
638 Set the flag word in the BFD @var{abfd} to the value @var{flags}.
640 Possible errors are:
641 o <<bfd_error_wrong_format>> - The target bfd was not of object format.
642 o <<bfd_error_invalid_operation>> - The target bfd was open for reading.
643 o <<bfd_error_invalid_operation>> -
644 The flag word contained a bit which was not applicable to the
645 type of file. E.g., an attempt was made to set the <<D_PAGED>> bit
646 on a BFD format which does not support demand paging.
650 boolean
651 bfd_set_file_flags (abfd, flags)
652 bfd *abfd;
653 flagword flags;
655 if (abfd->format != bfd_object) {
656 bfd_set_error (bfd_error_wrong_format);
657 return false;
660 if (bfd_read_p (abfd)) {
661 bfd_set_error (bfd_error_invalid_operation);
662 return false;
665 bfd_get_file_flags (abfd) = flags;
666 if ((flags & bfd_applicable_file_flags (abfd)) != flags) {
667 bfd_set_error (bfd_error_invalid_operation);
668 return false;
671 return true;
674 void
675 bfd_assert (file, line)
676 const char *file;
677 int line;
679 (*_bfd_error_handler) (_("bfd assertion fail %s:%d"), file, line);
684 FUNCTION
685 bfd_set_start_address
687 SYNOPSIS
688 boolean bfd_set_start_address(bfd *abfd, bfd_vma vma);
690 DESCRIPTION
691 Make @var{vma} the entry point of output BFD @var{abfd}.
693 RETURNS
694 Returns <<true>> on success, <<false>> otherwise.
697 boolean
698 bfd_set_start_address(abfd, vma)
699 bfd *abfd;
700 bfd_vma vma;
702 abfd->start_address = vma;
703 return true;
708 FUNCTION
709 bfd_get_mtime
711 SYNOPSIS
712 long bfd_get_mtime(bfd *abfd);
714 DESCRIPTION
715 Return the file modification time (as read from the file system, or
716 from the archive header for archive members).
720 long
721 bfd_get_mtime (abfd)
722 bfd *abfd;
724 FILE *fp;
725 struct stat buf;
727 if (abfd->mtime_set)
728 return abfd->mtime;
730 fp = bfd_cache_lookup (abfd);
731 if (0 != fstat (fileno (fp), &buf))
732 return 0;
734 abfd->mtime = buf.st_mtime; /* Save value in case anyone wants it */
735 return buf.st_mtime;
739 FUNCTION
740 bfd_get_size
742 SYNOPSIS
743 long bfd_get_size(bfd *abfd);
745 DESCRIPTION
746 Return the file size (as read from file system) for the file
747 associated with BFD @var{abfd}.
749 The initial motivation for, and use of, this routine is not
750 so we can get the exact size of the object the BFD applies to, since
751 that might not be generally possible (archive members for example).
752 It would be ideal if someone could eventually modify
753 it so that such results were guaranteed.
755 Instead, we want to ask questions like "is this NNN byte sized
756 object I'm about to try read from file offset YYY reasonable?"
757 As as example of where we might do this, some object formats
758 use string tables for which the first <<sizeof(long)>> bytes of the
759 table contain the size of the table itself, including the size bytes.
760 If an application tries to read what it thinks is one of these
761 string tables, without some way to validate the size, and for
762 some reason the size is wrong (byte swapping error, wrong location
763 for the string table, etc.), the only clue is likely to be a read
764 error when it tries to read the table, or a "virtual memory
765 exhausted" error when it tries to allocate 15 bazillon bytes
766 of space for the 15 bazillon byte table it is about to read.
767 This function at least allows us to answer the quesion, "is the
768 size reasonable?".
771 long
772 bfd_get_size (abfd)
773 bfd *abfd;
775 FILE *fp;
776 struct stat buf;
778 if ((abfd->flags & BFD_IN_MEMORY) != 0)
779 return ((struct bfd_in_memory *) abfd->iostream)->size;
781 fp = bfd_cache_lookup (abfd);
782 if (0 != fstat (fileno (fp), &buf))
783 return 0;
785 return buf.st_size;
789 FUNCTION
790 bfd_get_gp_size
792 SYNOPSIS
793 int bfd_get_gp_size(bfd *abfd);
795 DESCRIPTION
796 Return the maximum size of objects to be optimized using the GP
797 register under MIPS ECOFF. This is typically set by the <<-G>>
798 argument to the compiler, assembler or linker.
802 bfd_get_gp_size (abfd)
803 bfd *abfd;
805 if (abfd->format == bfd_object)
807 if (abfd->xvec->flavour == bfd_target_ecoff_flavour)
808 return ecoff_data (abfd)->gp_size;
809 else if (abfd->xvec->flavour == bfd_target_elf_flavour)
810 return elf_gp_size (abfd);
812 return 0;
816 FUNCTION
817 bfd_set_gp_size
819 SYNOPSIS
820 void bfd_set_gp_size(bfd *abfd, int i);
822 DESCRIPTION
823 Set the maximum size of objects to be optimized using the GP
824 register under ECOFF or MIPS ELF. This is typically set by
825 the <<-G>> argument to the compiler, assembler or linker.
828 void
829 bfd_set_gp_size (abfd, i)
830 bfd *abfd;
831 int i;
833 /* Don't try to set GP size on an archive or core file! */
834 if (abfd->format != bfd_object)
835 return;
836 if (abfd->xvec->flavour == bfd_target_ecoff_flavour)
837 ecoff_data (abfd)->gp_size = i;
838 else if (abfd->xvec->flavour == bfd_target_elf_flavour)
839 elf_gp_size (abfd) = i;
842 /* Get the GP value. This is an internal function used by some of the
843 relocation special_function routines on targets which support a GP
844 register. */
846 bfd_vma
847 _bfd_get_gp_value (abfd)
848 bfd *abfd;
850 if (abfd->format == bfd_object)
852 if (abfd->xvec->flavour == bfd_target_ecoff_flavour)
853 return ecoff_data (abfd)->gp;
854 else if (abfd->xvec->flavour == bfd_target_elf_flavour)
855 return elf_gp (abfd);
857 return 0;
860 /* Set the GP value. */
862 void
863 _bfd_set_gp_value (abfd, v)
864 bfd *abfd;
865 bfd_vma v;
867 if (abfd->format != bfd_object)
868 return;
869 if (abfd->xvec->flavour == bfd_target_ecoff_flavour)
870 ecoff_data (abfd)->gp = v;
871 else if (abfd->xvec->flavour == bfd_target_elf_flavour)
872 elf_gp (abfd) = v;
876 FUNCTION
877 bfd_scan_vma
879 SYNOPSIS
880 bfd_vma bfd_scan_vma(CONST char *string, CONST char **end, int base);
882 DESCRIPTION
883 Convert, like <<strtoul>>, a numerical expression
884 @var{string} into a <<bfd_vma>> integer, and return that integer.
885 (Though without as many bells and whistles as <<strtoul>>.)
886 The expression is assumed to be unsigned (i.e., positive).
887 If given a @var{base}, it is used as the base for conversion.
888 A base of 0 causes the function to interpret the string
889 in hex if a leading "0x" or "0X" is found, otherwise
890 in octal if a leading zero is found, otherwise in decimal.
892 Overflow is not detected.
895 bfd_vma
896 bfd_scan_vma (string, end, base)
897 CONST char *string;
898 CONST char **end;
899 int base;
901 bfd_vma value;
902 int digit;
904 /* Let the host do it if possible. */
905 if (sizeof(bfd_vma) <= sizeof(unsigned long))
906 return (bfd_vma) strtoul (string, (char **) end, base);
908 /* A negative base makes no sense, and we only need to go as high as hex. */
909 if ((base < 0) || (base > 16))
910 return (bfd_vma) 0;
912 if (base == 0)
914 if (string[0] == '0')
916 if ((string[1] == 'x') || (string[1] == 'X'))
917 base = 16;
918 /* XXX should we also allow "0b" or "0B" to set base to 2? */
919 else
920 base = 8;
922 else
923 base = 10;
925 if ((base == 16) &&
926 (string[0] == '0') && ((string[1] == 'x') || (string[1] == 'X')))
927 string += 2;
928 /* XXX should we also skip over "0b" or "0B" if base is 2? */
930 /* Speed could be improved with a table like hex_value[] in gas. */
931 #define HEX_VALUE(c) \
932 (isxdigit ((unsigned char) c) \
933 ? (isdigit ((unsigned char) c) \
934 ? (c - '0') \
935 : (10 + c - (islower ((unsigned char) c) ? 'a' : 'A'))) \
936 : 42)
938 for (value = 0; (digit = HEX_VALUE(*string)) < base; string++)
940 value = value * base + digit;
943 if (end)
944 *end = string;
946 return value;
950 FUNCTION
951 bfd_copy_private_bfd_data
953 SYNOPSIS
954 boolean bfd_copy_private_bfd_data(bfd *ibfd, bfd *obfd);
956 DESCRIPTION
957 Copy private BFD information from the BFD @var{ibfd} to the
958 the BFD @var{obfd}. Return <<true>> on success, <<false>> on error.
959 Possible error returns are:
961 o <<bfd_error_no_memory>> -
962 Not enough memory exists to create private data for @var{obfd}.
964 .#define bfd_copy_private_bfd_data(ibfd, obfd) \
965 . BFD_SEND (obfd, _bfd_copy_private_bfd_data, \
966 . (ibfd, obfd))
971 FUNCTION
972 bfd_merge_private_bfd_data
974 SYNOPSIS
975 boolean bfd_merge_private_bfd_data(bfd *ibfd, bfd *obfd);
977 DESCRIPTION
978 Merge private BFD information from the BFD @var{ibfd} to the
979 the output file BFD @var{obfd} when linking. Return <<true>>
980 on success, <<false>> on error. Possible error returns are:
982 o <<bfd_error_no_memory>> -
983 Not enough memory exists to create private data for @var{obfd}.
985 .#define bfd_merge_private_bfd_data(ibfd, obfd) \
986 . BFD_SEND (obfd, _bfd_merge_private_bfd_data, \
987 . (ibfd, obfd))
992 FUNCTION
993 bfd_set_private_flags
995 SYNOPSIS
996 boolean bfd_set_private_flags(bfd *abfd, flagword flags);
998 DESCRIPTION
999 Set private BFD flag information in the BFD @var{abfd}.
1000 Return <<true>> on success, <<false>> on error. Possible error
1001 returns are:
1003 o <<bfd_error_no_memory>> -
1004 Not enough memory exists to create private data for @var{obfd}.
1006 .#define bfd_set_private_flags(abfd, flags) \
1007 . BFD_SEND (abfd, _bfd_set_private_flags, \
1008 . (abfd, flags))
1013 FUNCTION
1014 stuff
1016 DESCRIPTION
1017 Stuff which should be documented:
1019 .#define bfd_sizeof_headers(abfd, reloc) \
1020 . BFD_SEND (abfd, _bfd_sizeof_headers, (abfd, reloc))
1022 .#define bfd_find_nearest_line(abfd, sec, syms, off, file, func, line) \
1023 . BFD_SEND (abfd, _bfd_find_nearest_line, (abfd, sec, syms, off, file, func, line))
1025 . {* Do these three do anything useful at all, for any back end? *}
1026 .#define bfd_debug_info_start(abfd) \
1027 . BFD_SEND (abfd, _bfd_debug_info_start, (abfd))
1029 .#define bfd_debug_info_end(abfd) \
1030 . BFD_SEND (abfd, _bfd_debug_info_end, (abfd))
1032 .#define bfd_debug_info_accumulate(abfd, section) \
1033 . BFD_SEND (abfd, _bfd_debug_info_accumulate, (abfd, section))
1036 .#define bfd_stat_arch_elt(abfd, stat) \
1037 . BFD_SEND (abfd, _bfd_stat_arch_elt,(abfd, stat))
1039 .#define bfd_update_armap_timestamp(abfd) \
1040 . BFD_SEND (abfd, _bfd_update_armap_timestamp, (abfd))
1042 .#define bfd_set_arch_mach(abfd, arch, mach)\
1043 . BFD_SEND ( abfd, _bfd_set_arch_mach, (abfd, arch, mach))
1045 .#define bfd_relax_section(abfd, section, link_info, again) \
1046 . BFD_SEND (abfd, _bfd_relax_section, (abfd, section, link_info, again))
1048 .#define bfd_gc_sections(abfd, link_info) \
1049 . BFD_SEND (abfd, _bfd_gc_sections, (abfd, link_info))
1051 .#define bfd_link_hash_table_create(abfd) \
1052 . BFD_SEND (abfd, _bfd_link_hash_table_create, (abfd))
1054 .#define bfd_link_add_symbols(abfd, info) \
1055 . BFD_SEND (abfd, _bfd_link_add_symbols, (abfd, info))
1057 .#define bfd_final_link(abfd, info) \
1058 . BFD_SEND (abfd, _bfd_final_link, (abfd, info))
1060 .#define bfd_free_cached_info(abfd) \
1061 . BFD_SEND (abfd, _bfd_free_cached_info, (abfd))
1063 .#define bfd_get_dynamic_symtab_upper_bound(abfd) \
1064 . BFD_SEND (abfd, _bfd_get_dynamic_symtab_upper_bound, (abfd))
1066 .#define bfd_print_private_bfd_data(abfd, file)\
1067 . BFD_SEND (abfd, _bfd_print_private_bfd_data, (abfd, file))
1069 .#define bfd_canonicalize_dynamic_symtab(abfd, asymbols) \
1070 . BFD_SEND (abfd, _bfd_canonicalize_dynamic_symtab, (abfd, asymbols))
1072 .#define bfd_get_dynamic_reloc_upper_bound(abfd) \
1073 . BFD_SEND (abfd, _bfd_get_dynamic_reloc_upper_bound, (abfd))
1075 .#define bfd_canonicalize_dynamic_reloc(abfd, arels, asyms) \
1076 . BFD_SEND (abfd, _bfd_canonicalize_dynamic_reloc, (abfd, arels, asyms))
1078 .extern bfd_byte *bfd_get_relocated_section_contents
1079 . PARAMS ((bfd *, struct bfd_link_info *,
1080 . struct bfd_link_order *, bfd_byte *,
1081 . boolean, asymbol **));
1086 bfd_byte *
1087 bfd_get_relocated_section_contents (abfd, link_info, link_order, data,
1088 relocateable, symbols)
1089 bfd *abfd;
1090 struct bfd_link_info *link_info;
1091 struct bfd_link_order *link_order;
1092 bfd_byte *data;
1093 boolean relocateable;
1094 asymbol **symbols;
1096 bfd *abfd2;
1097 bfd_byte *(*fn) PARAMS ((bfd *, struct bfd_link_info *,
1098 struct bfd_link_order *, bfd_byte *, boolean,
1099 asymbol **));
1101 if (link_order->type == bfd_indirect_link_order)
1103 abfd2 = link_order->u.indirect.section->owner;
1104 if (abfd2 == 0)
1105 abfd2 = abfd;
1107 else
1108 abfd2 = abfd;
1109 fn = abfd2->xvec->_bfd_get_relocated_section_contents;
1111 return (*fn) (abfd, link_info, link_order, data, relocateable, symbols);
1114 /* Record information about an ELF program header. */
1116 boolean
1117 bfd_record_phdr (abfd, type, flags_valid, flags, at_valid, at,
1118 includes_filehdr, includes_phdrs, count, secs)
1119 bfd *abfd;
1120 unsigned long type;
1121 boolean flags_valid;
1122 flagword flags;
1123 boolean at_valid;
1124 bfd_vma at;
1125 boolean includes_filehdr;
1126 boolean includes_phdrs;
1127 unsigned int count;
1128 asection **secs;
1130 struct elf_segment_map *m, **pm;
1132 if (bfd_get_flavour (abfd) != bfd_target_elf_flavour)
1133 return true;
1135 m = ((struct elf_segment_map *)
1136 bfd_alloc (abfd,
1137 (sizeof (struct elf_segment_map)
1138 + ((size_t) count - 1) * sizeof (asection *))));
1139 if (m == NULL)
1140 return false;
1142 m->next = NULL;
1143 m->p_type = type;
1144 m->p_flags = flags;
1145 m->p_paddr = at;
1146 m->p_flags_valid = flags_valid;
1147 m->p_paddr_valid = at_valid;
1148 m->includes_filehdr = includes_filehdr;
1149 m->includes_phdrs = includes_phdrs;
1150 m->count = count;
1151 if (count > 0)
1152 memcpy (m->sections, secs, count * sizeof (asection *));
1154 for (pm = &elf_tdata (abfd)->segment_map; *pm != NULL; pm = &(*pm)->next)
1156 *pm = m;
1158 return true;