1 /* Main program of GNU linker.
2 Copyright (C) 1991, 92, 93, 94, 1995 Free Software Foundation, Inc.
3 Written by Steve Chamberlain steve@cygnus.com
5 This file is part of GLD, the Gnu Linker.
7 GLD 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 2, or (at your option)
12 GLD 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 GLD; see the file COPYING. If not, write to
19 the Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
26 #include "libiberty.h"
42 /* Somewhere above, sys/stat.h got included . . . . */
43 #if !defined(S_ISDIR) && defined(S_IFDIR)
44 #define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR)
49 static char *get_emulation
PARAMS ((int, char **));
50 static void set_scripts_dir
PARAMS ((void));
55 const char *output_filename
= "a.out";
57 /* Name this program was invoked by. */
60 /* The file that we're creating */
63 /* Set by -G argument, for MIPS ECOFF target. */
64 int g_switch_value
= 8;
66 /* Nonzero means print names of input files as processed. */
69 /* Nonzero means same, but note open failures, too. */
70 boolean trace_file_tries
;
72 /* Nonzero means version number was printed, so exit successfully
73 instead of complaining if no input files are given. */
74 boolean version_printed
;
76 /* Nonzero means link in every member of an archive. */
77 boolean whole_archive
;
79 args_type command_line
;
81 ld_config_type config
;
83 static boolean check_for_scripts_dir
PARAMS ((char *dir
));
84 static boolean add_archive_element
PARAMS ((struct bfd_link_info
*, bfd
*,
86 static boolean multiple_definition
PARAMS ((struct bfd_link_info
*,
88 bfd
*, asection
*, bfd_vma
,
89 bfd
*, asection
*, bfd_vma
));
90 static boolean multiple_common
PARAMS ((struct bfd_link_info
*,
92 enum bfd_link_hash_type
, bfd_vma
,
93 bfd
*, enum bfd_link_hash_type
,
95 static boolean add_to_set
PARAMS ((struct bfd_link_info
*,
96 struct bfd_link_hash_entry
*,
97 bfd_reloc_code_real_type
,
98 bfd
*, asection
*, bfd_vma
));
99 static boolean constructor_callback
PARAMS ((struct bfd_link_info
*,
102 bfd
*, asection
*, bfd_vma
));
103 static boolean warning_callback
PARAMS ((struct bfd_link_info
*,
104 const char *, const char *, bfd
*,
105 asection
*, bfd_vma
));
106 static void warning_find_reloc
PARAMS ((bfd
*, asection
*, PTR
));
107 static boolean undefined_symbol
PARAMS ((struct bfd_link_info
*,
109 asection
*, bfd_vma
));
110 static boolean reloc_overflow
PARAMS ((struct bfd_link_info
*, const char *,
111 const char *, bfd_vma
,
112 bfd
*, asection
*, bfd_vma
));
113 static boolean reloc_dangerous
PARAMS ((struct bfd_link_info
*, const char *,
114 bfd
*, asection
*, bfd_vma
));
115 static boolean unattached_reloc
PARAMS ((struct bfd_link_info
*,
116 const char *, bfd
*, asection
*,
118 static boolean notice_ysym
PARAMS ((struct bfd_link_info
*, const char *,
119 bfd
*, asection
*, bfd_vma
));
121 static struct bfd_link_callbacks link_callbacks
=
127 constructor_callback
,
136 struct bfd_link_info link_info
;
143 if (output_bfd
&& output_bfd
->iostream
)
144 fclose((FILE *)(output_bfd
->iostream
));
145 if (delete_output_file_on_failure
)
146 unlink (output_filename
);
156 long start_time
= get_run_time ();
158 program_name
= argv
[0];
159 xmalloc_set_program_name (program_name
);
161 START_PROGRESS (program_name
, 0);
165 bfd_set_error_program_name (program_name
);
167 xatexit (remove_output
);
169 /* Initialize the data about options. */
170 trace_files
= trace_file_tries
= version_printed
= false;
171 whole_archive
= false;
172 config
.build_constructors
= true;
173 config
.dynamic_link
= false;
174 command_line
.force_common_definition
= false;
175 command_line
.interpreter
= NULL
;
176 command_line
.rpath
= NULL
;
178 link_info
.callbacks
= &link_callbacks
;
179 link_info
.relocateable
= false;
180 link_info
.shared
= false;
181 link_info
.symbolic
= false;
182 link_info
.static_link
= false;
183 link_info
.traditional_format
= false;
184 link_info
.strip
= strip_none
;
185 link_info
.discard
= discard_none
;
186 link_info
.lprefix_len
= 1;
187 link_info
.lprefix
= "L";
188 link_info
.keep_memory
= true;
189 link_info
.input_bfds
= NULL
;
190 link_info
.create_object_symbols_section
= NULL
;
191 link_info
.hash
= NULL
;
192 link_info
.keep_hash
= NULL
;
193 link_info
.notice_hash
= NULL
;
194 link_info
.wrap_hash
= NULL
;
196 ldfile_add_arch ("");
198 config
.make_executable
= true;
199 force_make_executable
= false;
200 config
.magic_demand_paged
= true;
201 config
.text_read_only
= true;
202 config
.make_executable
= true;
204 emulation
= get_emulation (argc
, argv
);
205 ldemul_choose_mode (emulation
);
206 default_target
= ldemul_choose_target ();
208 ldemul_before_parse ();
209 lang_has_input_file
= false;
210 parse_args (argc
, argv
);
212 ldemul_set_symbols ();
214 if (link_info
.relocateable
)
216 if (command_line
.relax
)
217 einfo ("%P%F: -relax and -r may not be used together\n");
218 if (link_info
.shared
)
219 einfo ("%P%F: -r and -shared may not be used together\n");
222 /* Treat ld -r -s as ld -r -S -x (i.e., strip all local symbols). I
223 don't see how else this can be handled, since in this case we
224 must preserve all externally visible symbols. */
225 if (link_info
.relocateable
&& link_info
.strip
== strip_all
)
227 link_info
.strip
= strip_debugger
;
228 if (link_info
.discard
== discard_none
)
229 link_info
.discard
= discard_all
;
232 /* This essentially adds another -L directory so this must be done after
233 the -L's in argv have been processed. */
236 if (had_script
== false)
238 /* Read the emulation's appropriate default script. */
240 char *s
= ldemul_get_script (&isfile
);
243 ldfile_open_command_file (s
);
246 if (trace_file_tries
)
248 info_msg ("using internal linker script:\n");
249 info_msg ("==================================================\n");
251 info_msg ("\n==================================================\n");
256 parser_input
= input_script
;
263 if (lang_has_input_file
== false)
267 einfo ("%P%F: no input files\n");
272 info_msg ("%P: mode %s\n", emulation
);
275 ldemul_after_parse ();
278 if (config
.map_filename
)
280 if (strcmp (config
.map_filename
, "-") == 0)
282 config
.map_file
= stdout
;
286 config
.map_file
= fopen (config
.map_filename
, FOPEN_WT
);
287 if (config
.map_file
== (FILE *) NULL
)
289 bfd_set_error (bfd_error_system_call
);
290 einfo ("%P%F: cannot open map file %s: %E\n",
291 config
.map_filename
);
299 /* Print error messages for any missing symbols, for any warning
300 symbols, and possibly multiple definitions */
303 if (config
.text_read_only
)
305 /* Look for a text section and mark the readonly attribute in it */
306 asection
*found
= bfd_get_section_by_name (output_bfd
, ".text");
308 if (found
!= (asection
*) NULL
)
310 found
->flags
|= SEC_READONLY
;
314 if (link_info
.relocateable
)
315 output_bfd
->flags
&= ~EXEC_P
;
317 output_bfd
->flags
|= EXEC_P
;
321 /* Even if we're producing relocateable output, some non-fatal errors should
322 be reported in the exit status. (What non-fatal errors, if any, do we
323 want to ignore for relocateable output?) */
325 if (config
.make_executable
== false && force_make_executable
== false)
327 if (trace_files
== true)
329 einfo ("%P: link errors found, deleting executable `%s'\n",
333 if (output_bfd
->iostream
)
334 fclose ((FILE *) (output_bfd
->iostream
));
336 unlink (output_filename
);
341 if (! bfd_close (output_bfd
))
342 einfo ("%F%B: final close failed: %E\n", output_bfd
);
345 END_PROGRESS (program_name
);
349 extern char **environ
;
351 char *lim
= (char *) sbrk (0);
353 long run_time
= get_run_time () - start_time
;
355 fprintf (stderr
, "%s: total time in link: %ld.%06ld\n",
356 program_name
, run_time
/ 1000000, run_time
% 1000000);
358 fprintf (stderr
, "%s: data size %ld\n", program_name
,
359 (long) (lim
- (char *) &environ
));
363 /* Prevent remove_output from doing anything, after a successful link. */
364 output_filename
= NULL
;
370 /* We need to find any explicitly given emulation in order to initialize the
371 state that's needed by the lex&yacc argument parser (parse_args). */
374 get_emulation (argc
, argv
)
381 emulation
= (char *) getenv (EMULATION_ENVIRON
);
382 if (emulation
== NULL
)
383 emulation
= DEFAULT_EMULATION
;
385 for (i
= 1; i
< argc
; i
++)
387 if (!strncmp (argv
[i
], "-m", 2))
389 if (argv
[i
][2] == '\0')
394 emulation
= argv
[i
+ 1];
399 einfo("%P%F: missing argument to -m\n");
402 else if (strcmp (argv
[i
], "-mips1") == 0
403 || strcmp (argv
[i
], "-mips2") == 0
404 || strcmp (argv
[i
], "-mips3") == 0)
406 /* FIXME: The arguments -mips1, -mips2 and -mips3 are
407 passed to the linker by some MIPS compilers. They
408 generally tell the linker to use a slightly different
409 library path. Perhaps someday these should be
410 implemented as emulations; until then, we just ignore
411 the arguments and hope that nobody ever creates
412 emulations named ips1, ips2 or ips3. */
414 else if (strcmp (argv
[i
], "-m486") == 0)
416 /* FIXME: The argument -m486 is passed to the linker on
417 some Linux systems. Hope that nobody creates an
418 emulation named 486. */
423 emulation
= &argv
[i
][2];
431 /* If directory DIR contains an "ldscripts" subdirectory,
432 add DIR to the library search path and return true,
433 else return false. */
436 check_for_scripts_dir (dir
)
444 dirlen
= strlen (dir
);
445 /* sizeof counts the terminating NUL. */
446 buf
= (char *) xmalloc (dirlen
+ sizeof("/ldscripts"));
447 sprintf (buf
, "%s/ldscripts", dir
);
449 res
= stat (buf
, &s
) == 0 && S_ISDIR (s
.st_mode
);
452 ldfile_add_library_path (dir
, false);
456 /* Set the default directory for finding script files.
457 Libraries will be searched for here too, but that's ok.
458 We look for the "ldscripts" directory in:
460 SCRIPTDIR (passed from Makefile)
461 the dir where this program is (for using it from the build tree)
462 the dir where this program is/../lib (for installing the tool suite elsewhere) */
470 if (check_for_scripts_dir (SCRIPTDIR
))
471 return; /* We've been installed normally. */
473 /* Look for "ldscripts" in the dir where our binary is. */
474 end
= strrchr (program_name
, '/');
478 /* Don't look for ldscripts in the current directory. There is
479 too much potential for confusion. */
483 dirlen
= end
- program_name
;
484 /* Make a copy of program_name in dir.
485 Leave room for later "/../lib". */
486 dir
= (char *) xmalloc (dirlen
+ 8);
487 strncpy (dir
, program_name
, dirlen
);
490 if (check_for_scripts_dir (dir
))
491 return; /* Don't free dir. */
493 /* Look for "ldscripts" in <the dir where our binary is>/../lib. */
494 strcpy (dir
+ dirlen
, "/../lib");
495 if (check_for_scripts_dir (dir
))
498 free (dir
); /* Well, we tried. */
505 if (link_info
.notice_hash
== (struct bfd_hash_table
*) NULL
)
507 link_info
.notice_hash
= ((struct bfd_hash_table
*)
508 xmalloc (sizeof (struct bfd_hash_table
)));
509 if (! bfd_hash_table_init_n (link_info
.notice_hash
,
512 einfo ("%P%F: bfd_hash_table_init failed: %E\n");
515 if (bfd_hash_lookup (link_info
.notice_hash
, name
, true, true)
516 == (struct bfd_hash_entry
*) NULL
)
517 einfo ("%P%F: bfd_hash_lookup failed: %E\n");
520 /* Record a symbol to be wrapped, from the --wrap option. */
526 if (link_info
.wrap_hash
== NULL
)
528 link_info
.wrap_hash
= ((struct bfd_hash_table
*)
529 xmalloc (sizeof (struct bfd_hash_table
)));
530 if (! bfd_hash_table_init_n (link_info
.wrap_hash
,
533 einfo ("%P%F: bfd_hash_table_init failed: %E\n");
535 if (bfd_hash_lookup (link_info
.wrap_hash
, name
, true, true) == NULL
)
536 einfo ("%P%F: bfd_hash_lookup failed: %E\n");
539 /* Handle the -retain-symbols-file option. */
542 add_keepsyms_file (filename
)
543 const char *filename
;
550 if (link_info
.strip
== strip_some
)
551 einfo ("%X%P: error: duplicate retain-symbols-file\n");
553 file
= fopen (filename
, "r");
554 if (file
== (FILE *) NULL
)
556 bfd_set_error (bfd_error_system_call
);
557 einfo ("%X%P: %s: %E\n", filename
);
561 link_info
.keep_hash
= ((struct bfd_hash_table
*)
562 xmalloc (sizeof (struct bfd_hash_table
)));
563 if (! bfd_hash_table_init (link_info
.keep_hash
, bfd_hash_newfunc
))
564 einfo ("%P%F: bfd_hash_table_init failed: %E\n");
567 buf
= (char *) xmalloc (bufsize
);
579 while (! isspace (c
) && c
!= EOF
)
586 buf
= xrealloc (buf
, bufsize
);
593 if (bfd_hash_lookup (link_info
.keep_hash
, buf
, true, true)
594 == (struct bfd_hash_entry
*) NULL
)
595 einfo ("%P%F: bfd_hash_lookup for insertion failed: %E\n");
599 if (link_info
.strip
!= strip_none
)
600 einfo ("%P: `-retain-symbols-file' overrides `-s' and `-S'\n");
602 link_info
.strip
= strip_some
;
605 /* Callbacks from the BFD linker routines. */
607 /* This is called when BFD has decided to include an archive member in
612 add_archive_element (info
, abfd
, name
)
613 struct bfd_link_info
*info
;
617 lang_input_statement_type
*input
;
619 input
= ((lang_input_statement_type
*)
620 xmalloc (sizeof (lang_input_statement_type
)));
621 input
->filename
= abfd
->filename
;
622 input
->local_sym_name
= abfd
->filename
;
623 input
->the_bfd
= abfd
;
624 input
->asymbols
= NULL
;
626 input
->just_syms_flag
= false;
627 input
->loaded
= false;
628 input
->search_dirs_flag
= false;
630 /* FIXME: The following fields are not set: header.next,
631 header.type, closed, passive_position, symbol_count,
632 next_real_file, is_archive, target, real, common_section,
633 common_output_section, complained. This bit of code is from the
634 old decode_library_subfile function. I don't know whether any of
635 those fields matters. */
637 ldlang_add_file (input
);
639 if (config
.map_file
!= (FILE *) NULL
)
640 minfo ("%s needed due to %T\n", abfd
->filename
, name
);
642 if (trace_files
|| trace_file_tries
)
643 info_msg ("%I\n", input
);
648 /* This is called when BFD has discovered a symbol which is defined
653 multiple_definition (info
, name
, obfd
, osec
, oval
, nbfd
, nsec
, nval
)
654 struct bfd_link_info
*info
;
663 /* If either section has the output_section field set to
664 bfd_abs_section_ptr, it means that the section is being
665 discarded, and this is not really a multiple definition at all.
666 FIXME: It would be cleaner to somehow ignore symbols defined in
667 sections which are being discarded. */
668 if ((osec
->output_section
!= NULL
669 && bfd_is_abs_section (osec
->output_section
))
670 || (nsec
->output_section
!= NULL
671 && bfd_is_abs_section (nsec
->output_section
)))
674 einfo ("%X%C: multiple definition of `%T'\n",
675 nbfd
, nsec
, nval
, name
);
676 if (obfd
!= (bfd
*) NULL
)
677 einfo ("%D: first defined here\n", obfd
, osec
, oval
);
681 /* This is called when there is a definition of a common symbol, or
682 when a common symbol is found for a symbol that is already defined,
683 or when two common symbols are found. We only do something if
684 -warn-common was used. */
688 multiple_common (info
, name
, obfd
, otype
, osize
, nbfd
, ntype
, nsize
)
689 struct bfd_link_info
*info
;
692 enum bfd_link_hash_type otype
;
695 enum bfd_link_hash_type ntype
;
698 if (! config
.warn_common
)
701 if (ntype
== bfd_link_hash_defined
702 || ntype
== bfd_link_hash_defweak
703 || ntype
== bfd_link_hash_indirect
)
705 ASSERT (otype
== bfd_link_hash_common
);
706 einfo ("%B: warning: definition of `%T' overriding common\n",
709 einfo ("%B: warning: common is here\n", obfd
);
711 else if (otype
== bfd_link_hash_defined
712 || otype
== bfd_link_hash_defweak
713 || otype
== bfd_link_hash_indirect
)
715 ASSERT (ntype
== bfd_link_hash_common
);
716 einfo ("%B: warning: common of `%T' overridden by definition\n",
719 einfo ("%B: warning: defined here\n", obfd
);
723 ASSERT (otype
== bfd_link_hash_common
&& ntype
== bfd_link_hash_common
);
726 einfo ("%B: warning: common of `%T' overridden by larger common\n",
729 einfo ("%B: warning: larger common is here\n", obfd
);
731 else if (nsize
> osize
)
733 einfo ("%B: warning: common of `%T' overriding smaller common\n",
736 einfo ("%B: warning: smaller common is here\n", obfd
);
740 einfo ("%B: warning: multiple common of `%T'\n", nbfd
, name
);
742 einfo ("%B: warning: previous common is here\n", obfd
);
749 /* This is called when BFD has discovered a set element. H is the
750 entry in the linker hash table for the set. SECTION and VALUE
751 represent a value which should be added to the set. */
755 add_to_set (info
, h
, reloc
, abfd
, section
, value
)
756 struct bfd_link_info
*info
;
757 struct bfd_link_hash_entry
*h
;
758 bfd_reloc_code_real_type reloc
;
763 if (config
.warn_constructors
)
764 einfo ("%P: warning: global constructor %s used\n",
767 if (! config
.build_constructors
)
770 ldctor_add_set_entry (h
, reloc
, (const char *) NULL
, section
, value
);
772 if (h
->type
== bfd_link_hash_new
)
774 h
->type
= bfd_link_hash_undefined
;
775 h
->u
.undef
.abfd
= abfd
;
776 /* We don't call bfd_link_add_undef to add this to the list of
777 undefined symbols because we are going to define it
784 /* This is called when BFD has discovered a constructor. This is only
785 called for some object file formats--those which do not handle
786 constructors in some more clever fashion. This is similar to
787 adding an element to a set, but less general. */
790 constructor_callback (info
, constructor
, name
, abfd
, section
, value
)
791 struct bfd_link_info
*info
;
799 struct bfd_link_hash_entry
*h
;
800 char set_name
[1 + sizeof "__CTOR_LIST__"];
802 if (config
.warn_constructors
)
803 einfo ("%P: warning: global constructor %s used\n", name
);
805 if (! config
.build_constructors
)
808 /* Ensure that BFD_RELOC_CTOR exists now, so that we can give a
809 useful error message. */
810 if (bfd_reloc_type_lookup (output_bfd
, BFD_RELOC_CTOR
) == NULL
811 && (link_info
.relocateable
812 || bfd_reloc_type_lookup (abfd
, BFD_RELOC_CTOR
) == NULL
))
813 einfo ("%P%F: BFD backend error: BFD_RELOC_CTOR unsupported\n");
816 if (bfd_get_symbol_leading_char (abfd
) != '\0')
817 *s
++ = bfd_get_symbol_leading_char (abfd
);
819 strcpy (s
, "__CTOR_LIST__");
821 strcpy (s
, "__DTOR_LIST__");
823 if (config
.map_file
!= (FILE *) NULL
)
824 fprintf (config
.map_file
,
825 "Adding %s to constructor/destructor set %s\n", name
, set_name
);
827 h
= bfd_link_hash_lookup (info
->hash
, set_name
, true, true, true);
828 if (h
== (struct bfd_link_hash_entry
*) NULL
)
829 einfo ("%P%F: bfd_link_hash_lookup failed: %E\n");
830 if (h
->type
== bfd_link_hash_new
)
832 h
->type
= bfd_link_hash_undefined
;
833 h
->u
.undef
.abfd
= abfd
;
834 /* We don't call bfd_link_add_undef to add this to the list of
835 undefined symbols because we are going to define it
839 ldctor_add_set_entry (h
, BFD_RELOC_CTOR
, name
, section
, value
);
843 /* A structure used by warning_callback to pass information through
844 bfd_map_over_sections. */
846 struct warning_callback_info
854 /* This is called when there is a reference to a warning symbol. */
858 warning_callback (info
, warning
, symbol
, abfd
, section
, address
)
859 struct bfd_link_info
*info
;
866 /* This is a hack to support warn_multiple_gp. FIXME: This should
867 have a cleaner interface, but what? */
868 if (! config
.warn_multiple_gp
869 && strcmp (warning
, "using multiple gp values") == 0)
873 einfo ("%C: %s\n", abfd
, section
, address
, warning
);
874 else if (abfd
== NULL
)
875 einfo ("%P: %s\n", warning
);
876 else if (symbol
== NULL
)
877 einfo ("%B: %s\n", abfd
, warning
);
880 lang_input_statement_type
*entry
;
882 struct warning_callback_info info
;
884 /* Look through the relocs to see if we can find a plausible
887 entry
= (lang_input_statement_type
*) abfd
->usrdata
;
888 if (entry
!= NULL
&& entry
->asymbols
!= NULL
)
889 asymbols
= entry
->asymbols
;
895 symsize
= bfd_get_symtab_upper_bound (abfd
);
897 einfo ("%B%F: could not read symbols: %E\n", abfd
);
898 asymbols
= (asymbol
**) xmalloc (symsize
);
899 symbol_count
= bfd_canonicalize_symtab (abfd
, asymbols
);
900 if (symbol_count
< 0)
901 einfo ("%B%F: could not read symbols: %E\n", abfd
);
904 entry
->asymbols
= asymbols
;
905 entry
->symbol_count
= symbol_count
;
910 info
.warning
= warning
;
911 info
.symbol
= symbol
;
912 info
.asymbols
= asymbols
;
913 bfd_map_over_sections (abfd
, warning_find_reloc
, (PTR
) &info
);
916 einfo ("%B: %s\n", abfd
, warning
);
922 /* This is called by warning_callback for each section. It checks the
923 relocs of the section to see if it can find a reference to the
924 symbol which triggered the warning. If it can, it uses the reloc
925 to give an error message with a file and line number. */
928 warning_find_reloc (abfd
, sec
, iarg
)
933 struct warning_callback_info
*info
= (struct warning_callback_info
*) iarg
;
942 relsize
= bfd_get_reloc_upper_bound (abfd
, sec
);
944 einfo ("%B%F: could not read relocs: %E\n", abfd
);
948 relpp
= (arelent
**) xmalloc (relsize
);
949 relcount
= bfd_canonicalize_reloc (abfd
, sec
, relpp
, info
->asymbols
);
951 einfo ("%B%F: could not read relocs: %E\n", abfd
);
955 for (; p
< pend
&& *p
!= NULL
; p
++)
959 if (q
->sym_ptr_ptr
!= NULL
960 && *q
->sym_ptr_ptr
!= NULL
961 && strcmp (bfd_asymbol_name (*q
->sym_ptr_ptr
), info
->symbol
) == 0)
963 /* We found a reloc for the symbol we are looking for. */
964 einfo ("%C: %s\n", abfd
, sec
, q
->address
, info
->warning
);
973 /* This is called when an undefined symbol is found. */
977 undefined_symbol (info
, name
, abfd
, section
, address
)
978 struct bfd_link_info
*info
;
984 static char *error_name
;
985 static unsigned int error_count
;
987 #define MAX_ERRORS_IN_A_ROW 5
989 if (config
.warn_once
)
991 static struct bfd_hash_table
*hash
;
993 /* Only warn once about a particular undefined symbol. */
997 hash
= ((struct bfd_hash_table
*)
998 xmalloc (sizeof (struct bfd_hash_table
)));
999 if (! bfd_hash_table_init (hash
, bfd_hash_newfunc
))
1000 einfo ("%F%P: bfd_hash_table_init failed: %E\n");
1003 if (bfd_hash_lookup (hash
, name
, false, false) != NULL
)
1006 if (bfd_hash_lookup (hash
, name
, true, true) == NULL
)
1007 einfo ("%F%P: bfd_hash_lookup failed: %E\n");
1010 /* We never print more than a reasonable number of errors in a row
1011 for a single symbol. */
1012 if (error_name
!= (char *) NULL
1013 && strcmp (name
, error_name
) == 0)
1018 if (error_name
!= (char *) NULL
)
1020 error_name
= buystring (name
);
1023 if (section
!= NULL
)
1025 if (error_count
< MAX_ERRORS_IN_A_ROW
)
1026 einfo ("%X%C: undefined reference to `%T'\n",
1027 abfd
, section
, address
, name
);
1028 else if (error_count
== MAX_ERRORS_IN_A_ROW
)
1029 einfo ("%D: more undefined references to `%T' follow\n",
1030 abfd
, section
, address
, name
);
1034 if (error_count
< MAX_ERRORS_IN_A_ROW
)
1035 einfo ("%X%B: undefined reference to `%T'\n",
1037 else if (error_count
== MAX_ERRORS_IN_A_ROW
)
1038 einfo ("%B: more undefined references to `%T' follow\n",
1045 /* This is called when a reloc overflows. */
1049 reloc_overflow (info
, name
, reloc_name
, addend
, abfd
, section
, address
)
1050 struct bfd_link_info
*info
;
1052 const char *reloc_name
;
1058 if (abfd
== (bfd
*) NULL
)
1059 einfo ("%P%X: generated");
1061 einfo ("%X%C:", abfd
, section
, address
);
1062 einfo (" relocation truncated to fit: %s %T", reloc_name
, name
);
1064 einfo ("+%v", addend
);
1069 /* This is called when a dangerous relocation is made. */
1073 reloc_dangerous (info
, message
, abfd
, section
, address
)
1074 struct bfd_link_info
*info
;
1075 const char *message
;
1080 if (abfd
== (bfd
*) NULL
)
1081 einfo ("%P%X: generated");
1083 einfo ("%X%C:", abfd
, section
, address
);
1084 einfo ("dangerous relocation: %s\n", message
);
1088 /* This is called when a reloc is being generated attached to a symbol
1089 that is not being output. */
1093 unattached_reloc (info
, name
, abfd
, section
, address
)
1094 struct bfd_link_info
*info
;
1100 if (abfd
== (bfd
*) NULL
)
1101 einfo ("%P%X: generated");
1103 einfo ("%X%C:", abfd
, section
, address
);
1104 einfo (" reloc refers to symbol `%T' which is not being output\n", name
);
1108 /* This is called when a symbol in notice_hash is found. Symbols are
1109 put in notice_hash using the -y option. */
1113 notice_ysym (info
, name
, abfd
, section
, value
)
1114 struct bfd_link_info
*info
;
1120 einfo ("%B: %s %s\n", abfd
,
1121 bfd_is_und_section (section
) ? "reference to" : "definition of",