d82184d782
ld/ PR ld/14904 * ldmain.c (main): Don't check plugin_load_plugins return. * lexsup.c (parse_args): Don't check plugin_opt_plugin return. * plugin.c (dlerror): New. Defined if HAVE_DLFCN_H isn't defined. (plugin_opt_plugin): Change return type to void. Stop on dlopen error and report error with dlerror (). (plugin_load_plugins): Change return type to void. Stop on dlsym error and report error with dlerror (). Don't use set_plugin_error. (plugin_call_cleanup): Issue an error for each plugin. * plugin.h (plugin_opt_plugin): Change return type to void. (plugin_load_plugins): Likewise. ld/testsuite/ PR ld/14904 * ld-plugin/plugin-2.d: Update expected error message. * ld-plugin/plugin-4.d: Likewise.
1471 lines
38 KiB
C
1471 lines
38 KiB
C
/* Main program of GNU linker.
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Copyright 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001,
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2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012
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Free Software Foundation, Inc.
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Written by Steve Chamberlain steve@cygnus.com
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This file is part of the GNU Binutils.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
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MA 02110-1301, USA. */
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#include "sysdep.h"
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#include "bfd.h"
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#include "safe-ctype.h"
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#include "libiberty.h"
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#include "progress.h"
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#include "bfdlink.h"
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#include "filenames.h"
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#include "ld.h"
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#include "ldmain.h"
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#include "ldmisc.h"
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#include "ldwrite.h"
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#include "ldexp.h"
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#include "ldlang.h"
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#include <ldgram.h>
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#include "ldlex.h"
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#include "ldfile.h"
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#include "ldemul.h"
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#include "ldctor.h"
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#ifdef ENABLE_PLUGINS
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#include "plugin.h"
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#include "plugin-api.h"
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#include "libbfd.h"
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#endif /* ENABLE_PLUGINS */
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/* Somewhere above, sys/stat.h got included. */
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#if !defined(S_ISDIR) && defined(S_IFDIR)
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#define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR)
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#endif
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#include <string.h>
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#ifdef HAVE_SBRK
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#if !HAVE_DECL_SBRK
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extern void *sbrk ();
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#endif
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#endif
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#ifndef TARGET_SYSTEM_ROOT
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#define TARGET_SYSTEM_ROOT ""
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#endif
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/* EXPORTS */
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FILE *saved_script_handle = NULL;
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FILE *previous_script_handle = NULL;
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bfd_boolean force_make_executable = FALSE;
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char *default_target;
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const char *output_filename = "a.out";
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/* Name this program was invoked by. */
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char *program_name;
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/* The prefix for system library directories. */
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const char *ld_sysroot;
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/* The canonical representation of ld_sysroot. */
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char * ld_canon_sysroot;
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int ld_canon_sysroot_len;
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/* Set by -G argument, for MIPS ECOFF target. */
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int g_switch_value = 8;
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/* Nonzero means print names of input files as processed. */
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bfd_boolean trace_files;
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/* Nonzero means report actions taken by the linker, and describe the linker script in use. */
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bfd_boolean verbose;
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/* Nonzero means version number was printed, so exit successfully
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instead of complaining if no input files are given. */
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bfd_boolean version_printed;
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/* TRUE if we should demangle symbol names. */
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bfd_boolean demangling;
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args_type command_line;
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ld_config_type config;
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sort_type sort_section;
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static const char *get_sysroot
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(int, char **);
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static char *get_emulation
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(int, char **);
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static bfd_boolean add_archive_element
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(struct bfd_link_info *, bfd *, const char *, bfd **);
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static bfd_boolean multiple_definition
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(struct bfd_link_info *, struct bfd_link_hash_entry *,
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bfd *, asection *, bfd_vma);
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static bfd_boolean multiple_common
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(struct bfd_link_info *, struct bfd_link_hash_entry *,
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bfd *, enum bfd_link_hash_type, bfd_vma);
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static bfd_boolean add_to_set
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(struct bfd_link_info *, struct bfd_link_hash_entry *,
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bfd_reloc_code_real_type, bfd *, asection *, bfd_vma);
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static bfd_boolean constructor_callback
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(struct bfd_link_info *, bfd_boolean, const char *, bfd *,
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asection *, bfd_vma);
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static bfd_boolean warning_callback
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(struct bfd_link_info *, const char *, const char *, bfd *,
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asection *, bfd_vma);
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static void warning_find_reloc
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(bfd *, asection *, void *);
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static bfd_boolean undefined_symbol
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(struct bfd_link_info *, const char *, bfd *, asection *, bfd_vma,
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bfd_boolean);
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static bfd_boolean reloc_overflow
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(struct bfd_link_info *, struct bfd_link_hash_entry *, const char *,
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const char *, bfd_vma, bfd *, asection *, bfd_vma);
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static bfd_boolean reloc_dangerous
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(struct bfd_link_info *, const char *, bfd *, asection *, bfd_vma);
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static bfd_boolean unattached_reloc
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(struct bfd_link_info *, const char *, bfd *, asection *, bfd_vma);
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static bfd_boolean notice
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(struct bfd_link_info *, struct bfd_link_hash_entry *,
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bfd *, asection *, bfd_vma, flagword, const char *);
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static struct bfd_link_callbacks link_callbacks =
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{
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add_archive_element,
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multiple_definition,
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multiple_common,
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add_to_set,
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constructor_callback,
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warning_callback,
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undefined_symbol,
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reloc_overflow,
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reloc_dangerous,
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unattached_reloc,
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notice,
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einfo,
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info_msg,
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minfo,
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ldlang_override_segment_assignment
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};
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static bfd_assert_handler_type default_bfd_assert_handler;
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struct bfd_link_info link_info;
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static void
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ld_cleanup (void)
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{
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bfd_cache_close_all ();
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#ifdef ENABLE_PLUGINS
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plugin_call_cleanup ();
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#endif
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if (output_filename && delete_output_file_on_failure)
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unlink_if_ordinary (output_filename);
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}
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/* If there's a BFD assertion, we'll notice and exit with an error
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unless otherwise instructed. */
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static void
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ld_bfd_assert_handler (const char *fmt, const char *bfdver,
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const char *file, int line)
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{
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(*default_bfd_assert_handler) (fmt, bfdver, file, line);
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config.make_executable = FALSE;
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}
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int
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main (int argc, char **argv)
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{
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char *emulation;
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long start_time = get_run_time ();
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#ifdef HAVE_SBRK
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char *start_sbrk = (char *) sbrk (0);
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#endif
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#if defined (HAVE_SETLOCALE) && defined (HAVE_LC_MESSAGES)
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setlocale (LC_MESSAGES, "");
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#endif
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#if defined (HAVE_SETLOCALE)
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setlocale (LC_CTYPE, "");
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#endif
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bindtextdomain (PACKAGE, LOCALEDIR);
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textdomain (PACKAGE);
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program_name = argv[0];
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xmalloc_set_program_name (program_name);
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START_PROGRESS (program_name, 0);
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expandargv (&argc, &argv);
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bfd_init ();
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bfd_set_error_program_name (program_name);
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/* We want to notice and fail on those nasty BFD assertions which are
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likely to signal incorrect output being generated but otherwise may
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leave no trace. */
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default_bfd_assert_handler = bfd_set_assert_handler (ld_bfd_assert_handler);
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xatexit (ld_cleanup);
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/* Set up the sysroot directory. */
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ld_sysroot = get_sysroot (argc, argv);
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if (*ld_sysroot)
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{
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if (*TARGET_SYSTEM_ROOT == 0)
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{
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einfo ("%P%F: this linker was not configured to use sysroots\n");
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ld_sysroot = "";
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}
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else
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ld_canon_sysroot = lrealpath (ld_sysroot);
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}
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if (ld_canon_sysroot)
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ld_canon_sysroot_len = strlen (ld_canon_sysroot);
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else
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ld_canon_sysroot_len = -1;
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/* Set the default BFD target based on the configured target. Doing
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this permits the linker to be configured for a particular target,
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and linked against a shared BFD library which was configured for
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a different target. The macro TARGET is defined by Makefile. */
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if (! bfd_set_default_target (TARGET))
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{
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einfo (_("%X%P: can't set BFD default target to `%s': %E\n"), TARGET);
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xexit (1);
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}
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#if YYDEBUG
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{
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extern int yydebug;
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yydebug = 1;
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}
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#endif
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config.build_constructors = TRUE;
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config.rpath_separator = ':';
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config.split_by_reloc = (unsigned) -1;
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config.split_by_file = (bfd_size_type) -1;
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config.make_executable = TRUE;
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config.magic_demand_paged = TRUE;
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config.text_read_only = TRUE;
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link_info.disable_target_specific_optimizations = -1;
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command_line.warn_mismatch = TRUE;
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command_line.warn_search_mismatch = TRUE;
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command_line.check_section_addresses = -1;
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/* We initialize DEMANGLING based on the environment variable
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COLLECT_NO_DEMANGLE. The gcc collect2 program will demangle the
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output of the linker, unless COLLECT_NO_DEMANGLE is set in the
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environment. Acting the same way here lets us provide the same
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interface by default. */
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demangling = getenv ("COLLECT_NO_DEMANGLE") == NULL;
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link_info.allow_undefined_version = TRUE;
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link_info.keep_memory = TRUE;
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link_info.combreloc = TRUE;
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link_info.strip_discarded = TRUE;
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link_info.emit_hash = TRUE;
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link_info.callbacks = &link_callbacks;
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link_info.input_bfds_tail = &link_info.input_bfds;
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/* SVR4 linkers seem to set DT_INIT and DT_FINI based on magic _init
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and _fini symbols. We are compatible. */
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link_info.init_function = "_init";
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link_info.fini_function = "_fini";
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link_info.relax_pass = 1;
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link_info.pei386_auto_import = -1;
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link_info.spare_dynamic_tags = 5;
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link_info.path_separator = ':';
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ldfile_add_arch ("");
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emulation = get_emulation (argc, argv);
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ldemul_choose_mode (emulation);
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default_target = ldemul_choose_target (argc, argv);
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config.maxpagesize = bfd_emul_get_maxpagesize (default_target);
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config.commonpagesize = bfd_emul_get_commonpagesize (default_target);
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lang_init ();
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ldemul_before_parse ();
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lang_has_input_file = FALSE;
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parse_args (argc, argv);
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if (config.hash_table_size != 0)
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bfd_hash_set_default_size (config.hash_table_size);
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#ifdef ENABLE_PLUGINS
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/* Now all the plugin arguments have been gathered, we can load them. */
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plugin_load_plugins ();
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#endif /* ENABLE_PLUGINS */
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ldemul_set_symbols ();
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/* If we have not already opened and parsed a linker script,
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try the default script from command line first. */
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if (saved_script_handle == NULL
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&& command_line.default_script != NULL)
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{
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ldfile_open_command_file (command_line.default_script);
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parser_input = input_script;
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yyparse ();
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}
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/* If we have not already opened and parsed a linker script
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read the emulation's appropriate default script. */
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if (saved_script_handle == NULL)
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{
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int isfile;
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char *s = ldemul_get_script (&isfile);
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if (isfile)
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ldfile_open_default_command_file (s);
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else
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{
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lex_string = s;
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lex_redirect (s, _("built in linker script"), 1);
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}
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parser_input = input_script;
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yyparse ();
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lex_string = NULL;
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}
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if (verbose)
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{
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if (saved_script_handle)
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info_msg (_("using external linker script:"));
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else
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info_msg (_("using internal linker script:"));
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info_msg ("\n==================================================\n");
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if (saved_script_handle)
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{
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static const int ld_bufsz = 8193;
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size_t n;
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char *buf = (char *) xmalloc (ld_bufsz);
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rewind (saved_script_handle);
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while ((n = fread (buf, 1, ld_bufsz - 1, saved_script_handle)) > 0)
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{
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buf[n] = 0;
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info_msg (buf);
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}
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rewind (saved_script_handle);
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free (buf);
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}
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else
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{
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int isfile;
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info_msg (ldemul_get_script (&isfile));
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}
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info_msg ("\n==================================================\n");
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}
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if (command_line.print_output_format)
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info_msg ("%s\n", lang_get_output_target ());
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lang_final ();
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if (!lang_has_input_file)
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{
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if (version_printed || command_line.print_output_format)
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xexit (0);
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einfo (_("%P%F: no input files\n"));
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}
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if (trace_files)
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info_msg (_("%P: mode %s\n"), emulation);
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ldemul_after_parse ();
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if (config.map_filename)
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{
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if (strcmp (config.map_filename, "-") == 0)
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{
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config.map_file = stdout;
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}
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else
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{
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config.map_file = fopen (config.map_filename, FOPEN_WT);
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if (config.map_file == (FILE *) NULL)
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{
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bfd_set_error (bfd_error_system_call);
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einfo (_("%P%F: cannot open map file %s: %E\n"),
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config.map_filename);
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}
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}
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}
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lang_process ();
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/* Print error messages for any missing symbols, for any warning
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symbols, and possibly multiple definitions. */
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if (link_info.relocatable)
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link_info.output_bfd->flags &= ~EXEC_P;
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else
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link_info.output_bfd->flags |= EXEC_P;
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ldwrite ();
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if (config.map_file != NULL)
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lang_map ();
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if (command_line.cref)
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output_cref (config.map_file != NULL ? config.map_file : stdout);
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if (nocrossref_list != NULL)
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check_nocrossrefs ();
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lang_finish ();
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/* Even if we're producing relocatable output, some non-fatal errors should
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be reported in the exit status. (What non-fatal errors, if any, do we
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want to ignore for relocatable output?) */
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if (!config.make_executable && !force_make_executable)
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{
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if (trace_files)
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einfo (_("%P: link errors found, deleting executable `%s'\n"),
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output_filename);
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/* The file will be removed by ld_cleanup. */
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xexit (1);
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}
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else
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{
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if (! bfd_close (link_info.output_bfd))
|
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einfo (_("%F%B: final close failed: %E\n"), link_info.output_bfd);
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/* If the --force-exe-suffix is enabled, and we're making an
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executable file and it doesn't end in .exe, copy it to one
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which does. */
|
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if (! link_info.relocatable && command_line.force_exe_suffix)
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{
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int len = strlen (output_filename);
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|
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if (len < 4
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|| (strcasecmp (output_filename + len - 4, ".exe") != 0
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&& strcasecmp (output_filename + len - 4, ".dll") != 0))
|
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{
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FILE *src;
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FILE *dst;
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const int bsize = 4096;
|
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char *buf = (char *) xmalloc (bsize);
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int l;
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char *dst_name = (char *) xmalloc (len + 5);
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strcpy (dst_name, output_filename);
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strcat (dst_name, ".exe");
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src = fopen (output_filename, FOPEN_RB);
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dst = fopen (dst_name, FOPEN_WB);
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|
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if (!src)
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einfo (_("%X%P: unable to open for source of copy `%s'\n"),
|
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output_filename);
|
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if (!dst)
|
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einfo (_("%X%P: unable to open for destination of copy `%s'\n"),
|
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dst_name);
|
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while ((l = fread (buf, 1, bsize, src)) > 0)
|
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{
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int done = fwrite (buf, 1, l, dst);
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|
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if (done != l)
|
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einfo (_("%P: Error writing file `%s'\n"), dst_name);
|
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}
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fclose (src);
|
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if (fclose (dst) == EOF)
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einfo (_("%P: Error closing file `%s'\n"), dst_name);
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free (dst_name);
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free (buf);
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}
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}
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}
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|
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END_PROGRESS (program_name);
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|
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if (config.stats)
|
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{
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#ifdef HAVE_SBRK
|
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char *lim = (char *) sbrk (0);
|
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#endif
|
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long run_time = get_run_time () - start_time;
|
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|
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fflush (stdout);
|
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fprintf (stderr, _("%s: total time in link: %ld.%06ld\n"),
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program_name, run_time / 1000000, run_time % 1000000);
|
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#ifdef HAVE_SBRK
|
||
fprintf (stderr, _("%s: data size %ld\n"), program_name,
|
||
(long) (lim - start_sbrk));
|
||
#endif
|
||
fflush (stderr);
|
||
}
|
||
|
||
/* Prevent ld_cleanup from doing anything, after a successful link. */
|
||
output_filename = NULL;
|
||
|
||
xexit (0);
|
||
return 0;
|
||
}
|
||
|
||
/* If the configured sysroot is relocatable, try relocating it based on
|
||
default prefix FROM. Return the relocated directory if it exists,
|
||
otherwise return null. */
|
||
|
||
static char *
|
||
get_relative_sysroot (const char *from ATTRIBUTE_UNUSED)
|
||
{
|
||
#ifdef TARGET_SYSTEM_ROOT_RELOCATABLE
|
||
char *path;
|
||
struct stat s;
|
||
|
||
path = make_relative_prefix (program_name, from, TARGET_SYSTEM_ROOT);
|
||
if (path)
|
||
{
|
||
if (stat (path, &s) == 0 && S_ISDIR (s.st_mode))
|
||
return path;
|
||
free (path);
|
||
}
|
||
#endif
|
||
return 0;
|
||
}
|
||
|
||
/* Return the sysroot directory. Return "" if no sysroot is being used. */
|
||
|
||
static const char *
|
||
get_sysroot (int argc, char **argv)
|
||
{
|
||
int i;
|
||
const char *path;
|
||
|
||
for (i = 1; i < argc; i++)
|
||
if (CONST_STRNEQ (argv[i], "--sysroot="))
|
||
return argv[i] + strlen ("--sysroot=");
|
||
|
||
path = get_relative_sysroot (BINDIR);
|
||
if (path)
|
||
return path;
|
||
|
||
path = get_relative_sysroot (TOOLBINDIR);
|
||
if (path)
|
||
return path;
|
||
|
||
return TARGET_SYSTEM_ROOT;
|
||
}
|
||
|
||
/* We need to find any explicitly given emulation in order to initialize the
|
||
state that's needed by the lex&yacc argument parser (parse_args). */
|
||
|
||
static char *
|
||
get_emulation (int argc, char **argv)
|
||
{
|
||
char *emulation;
|
||
int i;
|
||
|
||
emulation = getenv (EMULATION_ENVIRON);
|
||
if (emulation == NULL)
|
||
emulation = DEFAULT_EMULATION;
|
||
|
||
for (i = 1; i < argc; i++)
|
||
{
|
||
if (CONST_STRNEQ (argv[i], "-m"))
|
||
{
|
||
if (argv[i][2] == '\0')
|
||
{
|
||
/* -m EMUL */
|
||
if (i < argc - 1)
|
||
{
|
||
emulation = argv[i + 1];
|
||
i++;
|
||
}
|
||
else
|
||
einfo (_("%P%F: missing argument to -m\n"));
|
||
}
|
||
else if (strcmp (argv[i], "-mips1") == 0
|
||
|| strcmp (argv[i], "-mips2") == 0
|
||
|| strcmp (argv[i], "-mips3") == 0
|
||
|| strcmp (argv[i], "-mips4") == 0
|
||
|| strcmp (argv[i], "-mips5") == 0
|
||
|| strcmp (argv[i], "-mips32") == 0
|
||
|| strcmp (argv[i], "-mips32r2") == 0
|
||
|| strcmp (argv[i], "-mips64") == 0
|
||
|| strcmp (argv[i], "-mips64r2") == 0)
|
||
{
|
||
/* FIXME: The arguments -mips1, -mips2, -mips3, etc. are
|
||
passed to the linker by some MIPS compilers. They
|
||
generally tell the linker to use a slightly different
|
||
library path. Perhaps someday these should be
|
||
implemented as emulations; until then, we just ignore
|
||
the arguments and hope that nobody ever creates
|
||
emulations named ips1, ips2 or ips3. */
|
||
}
|
||
else if (strcmp (argv[i], "-m486") == 0)
|
||
{
|
||
/* FIXME: The argument -m486 is passed to the linker on
|
||
some Linux systems. Hope that nobody creates an
|
||
emulation named 486. */
|
||
}
|
||
else
|
||
{
|
||
/* -mEMUL */
|
||
emulation = &argv[i][2];
|
||
}
|
||
}
|
||
}
|
||
|
||
return emulation;
|
||
}
|
||
|
||
void
|
||
add_ysym (const char *name)
|
||
{
|
||
if (link_info.notice_hash == NULL)
|
||
{
|
||
link_info.notice_hash =
|
||
(struct bfd_hash_table *) xmalloc (sizeof (struct bfd_hash_table));
|
||
if (!bfd_hash_table_init_n (link_info.notice_hash,
|
||
bfd_hash_newfunc,
|
||
sizeof (struct bfd_hash_entry),
|
||
61))
|
||
einfo (_("%P%F: bfd_hash_table_init failed: %E\n"));
|
||
}
|
||
|
||
if (bfd_hash_lookup (link_info.notice_hash, name, TRUE, TRUE) == NULL)
|
||
einfo (_("%P%F: bfd_hash_lookup failed: %E\n"));
|
||
}
|
||
|
||
void
|
||
add_ignoresym (struct bfd_link_info *info, const char *name)
|
||
{
|
||
if (info->ignore_hash == NULL)
|
||
{
|
||
info->ignore_hash = xmalloc (sizeof (struct bfd_hash_table));
|
||
if (! bfd_hash_table_init_n (info->ignore_hash,
|
||
bfd_hash_newfunc,
|
||
sizeof (struct bfd_hash_entry),
|
||
61))
|
||
einfo (_("%P%F: bfd_hash_table_init failed: %E\n"));
|
||
}
|
||
|
||
if (bfd_hash_lookup (info->ignore_hash, name, TRUE, TRUE) == NULL)
|
||
einfo (_("%P%F: bfd_hash_lookup failed: %E\n"));
|
||
}
|
||
|
||
/* Record a symbol to be wrapped, from the --wrap option. */
|
||
|
||
void
|
||
add_wrap (const char *name)
|
||
{
|
||
if (link_info.wrap_hash == NULL)
|
||
{
|
||
link_info.wrap_hash =
|
||
(struct bfd_hash_table *) xmalloc (sizeof (struct bfd_hash_table));
|
||
if (!bfd_hash_table_init_n (link_info.wrap_hash,
|
||
bfd_hash_newfunc,
|
||
sizeof (struct bfd_hash_entry),
|
||
61))
|
||
einfo (_("%P%F: bfd_hash_table_init failed: %E\n"));
|
||
}
|
||
|
||
if (bfd_hash_lookup (link_info.wrap_hash, name, TRUE, TRUE) == NULL)
|
||
einfo (_("%P%F: bfd_hash_lookup failed: %E\n"));
|
||
}
|
||
|
||
/* Handle the -retain-symbols-file option. */
|
||
|
||
void
|
||
add_keepsyms_file (const char *filename)
|
||
{
|
||
FILE *file;
|
||
char *buf;
|
||
size_t bufsize;
|
||
int c;
|
||
|
||
if (link_info.strip == strip_some)
|
||
einfo (_("%X%P: error: duplicate retain-symbols-file\n"));
|
||
|
||
file = fopen (filename, "r");
|
||
if (file == NULL)
|
||
{
|
||
bfd_set_error (bfd_error_system_call);
|
||
einfo ("%X%P: %s: %E\n", filename);
|
||
return;
|
||
}
|
||
|
||
link_info.keep_hash = (struct bfd_hash_table *)
|
||
xmalloc (sizeof (struct bfd_hash_table));
|
||
if (!bfd_hash_table_init (link_info.keep_hash, bfd_hash_newfunc,
|
||
sizeof (struct bfd_hash_entry)))
|
||
einfo (_("%P%F: bfd_hash_table_init failed: %E\n"));
|
||
|
||
bufsize = 100;
|
||
buf = (char *) xmalloc (bufsize);
|
||
|
||
c = getc (file);
|
||
while (c != EOF)
|
||
{
|
||
while (ISSPACE (c))
|
||
c = getc (file);
|
||
|
||
if (c != EOF)
|
||
{
|
||
size_t len = 0;
|
||
|
||
while (! ISSPACE (c) && c != EOF)
|
||
{
|
||
buf[len] = c;
|
||
++len;
|
||
if (len >= bufsize)
|
||
{
|
||
bufsize *= 2;
|
||
buf = (char *) xrealloc (buf, bufsize);
|
||
}
|
||
c = getc (file);
|
||
}
|
||
|
||
buf[len] = '\0';
|
||
|
||
if (bfd_hash_lookup (link_info.keep_hash, buf, TRUE, TRUE) == NULL)
|
||
einfo (_("%P%F: bfd_hash_lookup for insertion failed: %E\n"));
|
||
}
|
||
}
|
||
|
||
if (link_info.strip != strip_none)
|
||
einfo (_("%P: `-retain-symbols-file' overrides `-s' and `-S'\n"));
|
||
|
||
free (buf);
|
||
link_info.strip = strip_some;
|
||
}
|
||
|
||
/* Callbacks from the BFD linker routines. */
|
||
|
||
/* This is called when BFD has decided to include an archive member in
|
||
a link. */
|
||
|
||
static bfd_boolean
|
||
add_archive_element (struct bfd_link_info *info,
|
||
bfd *abfd,
|
||
const char *name,
|
||
bfd **subsbfd ATTRIBUTE_UNUSED)
|
||
{
|
||
lang_input_statement_type *input;
|
||
lang_input_statement_type orig_input;
|
||
|
||
input = (lang_input_statement_type *)
|
||
xcalloc (1, sizeof (lang_input_statement_type));
|
||
input->filename = abfd->filename;
|
||
input->local_sym_name = abfd->filename;
|
||
input->the_bfd = abfd;
|
||
|
||
/* Save the original data for trace files/tries below, as plugins
|
||
(if enabled) may possibly alter it to point to a replacement
|
||
BFD, but we still want to output the original BFD filename. */
|
||
orig_input = *input;
|
||
#ifdef ENABLE_PLUGINS
|
||
if (plugin_active_plugins_p () && !no_more_claiming)
|
||
{
|
||
/* We must offer this archive member to the plugins to claim. */
|
||
const char *filename = (bfd_my_archive (abfd) != NULL
|
||
? bfd_my_archive (abfd)->filename : abfd->filename);
|
||
int fd = open (filename, O_RDONLY | O_BINARY);
|
||
if (fd >= 0)
|
||
{
|
||
struct ld_plugin_input_file file;
|
||
|
||
/* Offset and filesize must refer to the individual archive
|
||
member, not the whole file, and must exclude the header.
|
||
Fortunately for us, that is how the data is stored in the
|
||
origin field of the bfd and in the arelt_data. */
|
||
file.name = filename;
|
||
file.offset = abfd->origin;
|
||
file.filesize = arelt_size (abfd);
|
||
file.fd = fd;
|
||
plugin_maybe_claim (&file, input);
|
||
if (input->flags.claimed)
|
||
{
|
||
input->flags.claim_archive = TRUE;
|
||
*subsbfd = input->the_bfd;
|
||
}
|
||
}
|
||
}
|
||
#endif /* ENABLE_PLUGINS */
|
||
|
||
ldlang_add_file (input);
|
||
|
||
if (config.map_file != NULL)
|
||
{
|
||
static bfd_boolean header_printed;
|
||
struct bfd_link_hash_entry *h;
|
||
bfd *from;
|
||
int len;
|
||
|
||
h = bfd_link_hash_lookup (info->hash, name, FALSE, FALSE, TRUE);
|
||
|
||
if (h == NULL)
|
||
from = NULL;
|
||
else
|
||
{
|
||
switch (h->type)
|
||
{
|
||
default:
|
||
from = NULL;
|
||
break;
|
||
|
||
case bfd_link_hash_defined:
|
||
case bfd_link_hash_defweak:
|
||
from = h->u.def.section->owner;
|
||
break;
|
||
|
||
case bfd_link_hash_undefined:
|
||
case bfd_link_hash_undefweak:
|
||
from = h->u.undef.abfd;
|
||
break;
|
||
|
||
case bfd_link_hash_common:
|
||
from = h->u.c.p->section->owner;
|
||
break;
|
||
}
|
||
}
|
||
|
||
if (! header_printed)
|
||
{
|
||
char buf[100];
|
||
|
||
sprintf (buf, _("Archive member included because of file (symbol)\n\n"));
|
||
minfo ("%s", buf);
|
||
header_printed = TRUE;
|
||
}
|
||
|
||
if (bfd_my_archive (abfd) == NULL)
|
||
{
|
||
minfo ("%s", bfd_get_filename (abfd));
|
||
len = strlen (bfd_get_filename (abfd));
|
||
}
|
||
else
|
||
{
|
||
minfo ("%s(%s)", bfd_get_filename (bfd_my_archive (abfd)),
|
||
bfd_get_filename (abfd));
|
||
len = (strlen (bfd_get_filename (bfd_my_archive (abfd)))
|
||
+ strlen (bfd_get_filename (abfd))
|
||
+ 2);
|
||
}
|
||
|
||
if (len >= 29)
|
||
{
|
||
print_nl ();
|
||
len = 0;
|
||
}
|
||
while (len < 30)
|
||
{
|
||
print_space ();
|
||
++len;
|
||
}
|
||
|
||
if (from != NULL)
|
||
minfo ("%B ", from);
|
||
if (h != NULL)
|
||
minfo ("(%T)\n", h->root.string);
|
||
else
|
||
minfo ("(%s)\n", name);
|
||
}
|
||
|
||
if (trace_files || verbose)
|
||
info_msg ("%I\n", &orig_input);
|
||
return TRUE;
|
||
}
|
||
|
||
/* This is called when BFD has discovered a symbol which is defined
|
||
multiple times. */
|
||
|
||
static bfd_boolean
|
||
multiple_definition (struct bfd_link_info *info,
|
||
struct bfd_link_hash_entry *h,
|
||
bfd *nbfd,
|
||
asection *nsec,
|
||
bfd_vma nval)
|
||
{
|
||
const char *name;
|
||
bfd *obfd;
|
||
asection *osec;
|
||
bfd_vma oval;
|
||
|
||
if (info->allow_multiple_definition)
|
||
return TRUE;
|
||
|
||
switch (h->type)
|
||
{
|
||
case bfd_link_hash_defined:
|
||
osec = h->u.def.section;
|
||
oval = h->u.def.value;
|
||
obfd = h->u.def.section->owner;
|
||
break;
|
||
case bfd_link_hash_indirect:
|
||
osec = bfd_ind_section_ptr;
|
||
oval = 0;
|
||
obfd = NULL;
|
||
break;
|
||
default:
|
||
abort ();
|
||
}
|
||
|
||
/* Ignore a redefinition of an absolute symbol to the
|
||
same value; it's harmless. */
|
||
if (h->type == bfd_link_hash_defined
|
||
&& bfd_is_abs_section (osec)
|
||
&& bfd_is_abs_section (nsec)
|
||
&& nval == oval)
|
||
return TRUE;
|
||
|
||
/* If either section has the output_section field set to
|
||
bfd_abs_section_ptr, it means that the section is being
|
||
discarded, and this is not really a multiple definition at all.
|
||
FIXME: It would be cleaner to somehow ignore symbols defined in
|
||
sections which are being discarded. */
|
||
if ((osec->output_section != NULL
|
||
&& ! bfd_is_abs_section (osec)
|
||
&& bfd_is_abs_section (osec->output_section))
|
||
|| (nsec->output_section != NULL
|
||
&& ! bfd_is_abs_section (nsec)
|
||
&& bfd_is_abs_section (nsec->output_section)))
|
||
return TRUE;
|
||
|
||
name = h->root.string;
|
||
if (nbfd == NULL)
|
||
{
|
||
nbfd = obfd;
|
||
nsec = osec;
|
||
nval = oval;
|
||
obfd = NULL;
|
||
}
|
||
einfo (_("%X%C: multiple definition of `%T'\n"),
|
||
nbfd, nsec, nval, name);
|
||
if (obfd != NULL)
|
||
einfo (_("%D: first defined here\n"), obfd, osec, oval);
|
||
|
||
if (RELAXATION_ENABLED)
|
||
{
|
||
einfo (_("%P: Disabling relaxation: it will not work with multiple definitions\n"));
|
||
link_info.disable_target_specific_optimizations = -1;
|
||
}
|
||
|
||
return TRUE;
|
||
}
|
||
|
||
/* This is called when there is a definition of a common symbol, or
|
||
when a common symbol is found for a symbol that is already defined,
|
||
or when two common symbols are found. We only do something if
|
||
-warn-common was used. */
|
||
|
||
static bfd_boolean
|
||
multiple_common (struct bfd_link_info *info ATTRIBUTE_UNUSED,
|
||
struct bfd_link_hash_entry *h,
|
||
bfd *nbfd,
|
||
enum bfd_link_hash_type ntype,
|
||
bfd_vma nsize)
|
||
{
|
||
const char *name;
|
||
bfd *obfd;
|
||
enum bfd_link_hash_type otype;
|
||
bfd_vma osize;
|
||
|
||
if (!config.warn_common)
|
||
return TRUE;
|
||
|
||
name = h->root.string;
|
||
otype = h->type;
|
||
if (otype == bfd_link_hash_common)
|
||
{
|
||
obfd = h->u.c.p->section->owner;
|
||
osize = h->u.c.size;
|
||
}
|
||
else if (otype == bfd_link_hash_defined
|
||
|| otype == bfd_link_hash_defweak)
|
||
{
|
||
obfd = h->u.def.section->owner;
|
||
osize = 0;
|
||
}
|
||
else
|
||
{
|
||
/* FIXME: It would nice if we could report the BFD which defined
|
||
an indirect symbol, but we don't have anywhere to store the
|
||
information. */
|
||
obfd = NULL;
|
||
osize = 0;
|
||
}
|
||
|
||
if (ntype == bfd_link_hash_defined
|
||
|| ntype == bfd_link_hash_defweak
|
||
|| ntype == bfd_link_hash_indirect)
|
||
{
|
||
ASSERT (otype == bfd_link_hash_common);
|
||
einfo (_("%B: warning: definition of `%T' overriding common\n"),
|
||
nbfd, name);
|
||
if (obfd != NULL)
|
||
einfo (_("%B: warning: common is here\n"), obfd);
|
||
}
|
||
else if (otype == bfd_link_hash_defined
|
||
|| otype == bfd_link_hash_defweak
|
||
|| otype == bfd_link_hash_indirect)
|
||
{
|
||
ASSERT (ntype == bfd_link_hash_common);
|
||
einfo (_("%B: warning: common of `%T' overridden by definition\n"),
|
||
nbfd, name);
|
||
if (obfd != NULL)
|
||
einfo (_("%B: warning: defined here\n"), obfd);
|
||
}
|
||
else
|
||
{
|
||
ASSERT (otype == bfd_link_hash_common && ntype == bfd_link_hash_common);
|
||
if (osize > nsize)
|
||
{
|
||
einfo (_("%B: warning: common of `%T' overridden by larger common\n"),
|
||
nbfd, name);
|
||
if (obfd != NULL)
|
||
einfo (_("%B: warning: larger common is here\n"), obfd);
|
||
}
|
||
else if (nsize > osize)
|
||
{
|
||
einfo (_("%B: warning: common of `%T' overriding smaller common\n"),
|
||
nbfd, name);
|
||
if (obfd != NULL)
|
||
einfo (_("%B: warning: smaller common is here\n"), obfd);
|
||
}
|
||
else
|
||
{
|
||
einfo (_("%B: warning: multiple common of `%T'\n"), nbfd, name);
|
||
if (obfd != NULL)
|
||
einfo (_("%B: warning: previous common is here\n"), obfd);
|
||
}
|
||
}
|
||
|
||
return TRUE;
|
||
}
|
||
|
||
/* This is called when BFD has discovered a set element. H is the
|
||
entry in the linker hash table for the set. SECTION and VALUE
|
||
represent a value which should be added to the set. */
|
||
|
||
static bfd_boolean
|
||
add_to_set (struct bfd_link_info *info ATTRIBUTE_UNUSED,
|
||
struct bfd_link_hash_entry *h,
|
||
bfd_reloc_code_real_type reloc,
|
||
bfd *abfd,
|
||
asection *section,
|
||
bfd_vma value)
|
||
{
|
||
if (config.warn_constructors)
|
||
einfo (_("%P: warning: global constructor %s used\n"),
|
||
h->root.string);
|
||
|
||
if (! config.build_constructors)
|
||
return TRUE;
|
||
|
||
ldctor_add_set_entry (h, reloc, NULL, section, value);
|
||
|
||
if (h->type == bfd_link_hash_new)
|
||
{
|
||
h->type = bfd_link_hash_undefined;
|
||
h->u.undef.abfd = abfd;
|
||
/* We don't call bfd_link_add_undef to add this to the list of
|
||
undefined symbols because we are going to define it
|
||
ourselves. */
|
||
}
|
||
|
||
return TRUE;
|
||
}
|
||
|
||
/* This is called when BFD has discovered a constructor. This is only
|
||
called for some object file formats--those which do not handle
|
||
constructors in some more clever fashion. This is similar to
|
||
adding an element to a set, but less general. */
|
||
|
||
static bfd_boolean
|
||
constructor_callback (struct bfd_link_info *info,
|
||
bfd_boolean constructor,
|
||
const char *name,
|
||
bfd *abfd,
|
||
asection *section,
|
||
bfd_vma value)
|
||
{
|
||
char *s;
|
||
struct bfd_link_hash_entry *h;
|
||
char set_name[1 + sizeof "__CTOR_LIST__"];
|
||
|
||
if (config.warn_constructors)
|
||
einfo (_("%P: warning: global constructor %s used\n"), name);
|
||
|
||
if (! config.build_constructors)
|
||
return TRUE;
|
||
|
||
/* Ensure that BFD_RELOC_CTOR exists now, so that we can give a
|
||
useful error message. */
|
||
if (bfd_reloc_type_lookup (info->output_bfd, BFD_RELOC_CTOR) == NULL
|
||
&& (info->relocatable
|
||
|| bfd_reloc_type_lookup (abfd, BFD_RELOC_CTOR) == NULL))
|
||
einfo (_("%P%F: BFD backend error: BFD_RELOC_CTOR unsupported\n"));
|
||
|
||
s = set_name;
|
||
if (bfd_get_symbol_leading_char (abfd) != '\0')
|
||
*s++ = bfd_get_symbol_leading_char (abfd);
|
||
if (constructor)
|
||
strcpy (s, "__CTOR_LIST__");
|
||
else
|
||
strcpy (s, "__DTOR_LIST__");
|
||
|
||
h = bfd_link_hash_lookup (info->hash, set_name, TRUE, TRUE, TRUE);
|
||
if (h == (struct bfd_link_hash_entry *) NULL)
|
||
einfo (_("%P%F: bfd_link_hash_lookup failed: %E\n"));
|
||
if (h->type == bfd_link_hash_new)
|
||
{
|
||
h->type = bfd_link_hash_undefined;
|
||
h->u.undef.abfd = abfd;
|
||
/* We don't call bfd_link_add_undef to add this to the list of
|
||
undefined symbols because we are going to define it
|
||
ourselves. */
|
||
}
|
||
|
||
ldctor_add_set_entry (h, BFD_RELOC_CTOR, name, section, value);
|
||
return TRUE;
|
||
}
|
||
|
||
/* A structure used by warning_callback to pass information through
|
||
bfd_map_over_sections. */
|
||
|
||
struct warning_callback_info
|
||
{
|
||
bfd_boolean found;
|
||
const char *warning;
|
||
const char *symbol;
|
||
asymbol **asymbols;
|
||
};
|
||
|
||
/* This is called when there is a reference to a warning symbol. */
|
||
|
||
static bfd_boolean
|
||
warning_callback (struct bfd_link_info *info ATTRIBUTE_UNUSED,
|
||
const char *warning,
|
||
const char *symbol,
|
||
bfd *abfd,
|
||
asection *section,
|
||
bfd_vma address)
|
||
{
|
||
/* This is a hack to support warn_multiple_gp. FIXME: This should
|
||
have a cleaner interface, but what? */
|
||
if (! config.warn_multiple_gp
|
||
&& strcmp (warning, "using multiple gp values") == 0)
|
||
return TRUE;
|
||
|
||
if (section != NULL)
|
||
einfo ("%C: %s%s\n", abfd, section, address, _("warning: "), warning);
|
||
else if (abfd == NULL)
|
||
einfo ("%P: %s%s\n", _("warning: "), warning);
|
||
else if (symbol == NULL)
|
||
einfo ("%B: %s%s\n", abfd, _("warning: "), warning);
|
||
else
|
||
{
|
||
struct warning_callback_info cinfo;
|
||
|
||
/* Look through the relocs to see if we can find a plausible
|
||
address. */
|
||
|
||
if (!bfd_generic_link_read_symbols (abfd))
|
||
einfo (_("%B%F: could not read symbols: %E\n"), abfd);
|
||
|
||
cinfo.found = FALSE;
|
||
cinfo.warning = warning;
|
||
cinfo.symbol = symbol;
|
||
cinfo.asymbols = bfd_get_outsymbols (abfd);
|
||
bfd_map_over_sections (abfd, warning_find_reloc, &cinfo);
|
||
|
||
if (! cinfo.found)
|
||
einfo ("%B: %s%s\n", abfd, _("warning: "), warning);
|
||
}
|
||
|
||
return TRUE;
|
||
}
|
||
|
||
/* This is called by warning_callback for each section. It checks the
|
||
relocs of the section to see if it can find a reference to the
|
||
symbol which triggered the warning. If it can, it uses the reloc
|
||
to give an error message with a file and line number. */
|
||
|
||
static void
|
||
warning_find_reloc (bfd *abfd, asection *sec, void *iarg)
|
||
{
|
||
struct warning_callback_info *info = (struct warning_callback_info *) iarg;
|
||
long relsize;
|
||
arelent **relpp;
|
||
long relcount;
|
||
arelent **p, **pend;
|
||
|
||
if (info->found)
|
||
return;
|
||
|
||
relsize = bfd_get_reloc_upper_bound (abfd, sec);
|
||
if (relsize < 0)
|
||
einfo (_("%B%F: could not read relocs: %E\n"), abfd);
|
||
if (relsize == 0)
|
||
return;
|
||
|
||
relpp = (arelent **) xmalloc (relsize);
|
||
relcount = bfd_canonicalize_reloc (abfd, sec, relpp, info->asymbols);
|
||
if (relcount < 0)
|
||
einfo (_("%B%F: could not read relocs: %E\n"), abfd);
|
||
|
||
p = relpp;
|
||
pend = p + relcount;
|
||
for (; p < pend && *p != NULL; p++)
|
||
{
|
||
arelent *q = *p;
|
||
|
||
if (q->sym_ptr_ptr != NULL
|
||
&& *q->sym_ptr_ptr != NULL
|
||
&& strcmp (bfd_asymbol_name (*q->sym_ptr_ptr), info->symbol) == 0)
|
||
{
|
||
/* We found a reloc for the symbol we are looking for. */
|
||
einfo ("%C: %s%s\n", abfd, sec, q->address, _("warning: "),
|
||
info->warning);
|
||
info->found = TRUE;
|
||
break;
|
||
}
|
||
}
|
||
|
||
free (relpp);
|
||
}
|
||
|
||
/* This is called when an undefined symbol is found. */
|
||
|
||
static bfd_boolean
|
||
undefined_symbol (struct bfd_link_info *info,
|
||
const char *name,
|
||
bfd *abfd,
|
||
asection *section,
|
||
bfd_vma address,
|
||
bfd_boolean error)
|
||
{
|
||
static char *error_name;
|
||
static unsigned int error_count;
|
||
|
||
#define MAX_ERRORS_IN_A_ROW 5
|
||
|
||
if (info->ignore_hash != NULL
|
||
&& bfd_hash_lookup (info->ignore_hash, name, FALSE, FALSE) != NULL)
|
||
return TRUE;
|
||
|
||
if (config.warn_once)
|
||
{
|
||
/* Only warn once about a particular undefined symbol. */
|
||
add_ignoresym (info, name);
|
||
}
|
||
|
||
/* We never print more than a reasonable number of errors in a row
|
||
for a single symbol. */
|
||
if (error_name != NULL
|
||
&& strcmp (name, error_name) == 0)
|
||
++error_count;
|
||
else
|
||
{
|
||
error_count = 0;
|
||
if (error_name != NULL)
|
||
free (error_name);
|
||
error_name = xstrdup (name);
|
||
}
|
||
|
||
if (section != NULL)
|
||
{
|
||
if (error_count < MAX_ERRORS_IN_A_ROW)
|
||
{
|
||
if (error)
|
||
einfo (_("%X%C: undefined reference to `%T'\n"),
|
||
abfd, section, address, name);
|
||
else
|
||
einfo (_("%C: warning: undefined reference to `%T'\n"),
|
||
abfd, section, address, name);
|
||
}
|
||
else if (error_count == MAX_ERRORS_IN_A_ROW)
|
||
{
|
||
if (error)
|
||
einfo (_("%X%D: more undefined references to `%T' follow\n"),
|
||
abfd, section, address, name);
|
||
else
|
||
einfo (_("%D: warning: more undefined references to `%T' follow\n"),
|
||
abfd, section, address, name);
|
||
}
|
||
else if (error)
|
||
einfo ("%X");
|
||
}
|
||
else
|
||
{
|
||
if (error_count < MAX_ERRORS_IN_A_ROW)
|
||
{
|
||
if (error)
|
||
einfo (_("%X%B: undefined reference to `%T'\n"),
|
||
abfd, name);
|
||
else
|
||
einfo (_("%B: warning: undefined reference to `%T'\n"),
|
||
abfd, name);
|
||
}
|
||
else if (error_count == MAX_ERRORS_IN_A_ROW)
|
||
{
|
||
if (error)
|
||
einfo (_("%X%B: more undefined references to `%T' follow\n"),
|
||
abfd, name);
|
||
else
|
||
einfo (_("%B: warning: more undefined references to `%T' follow\n"),
|
||
abfd, name);
|
||
}
|
||
else if (error)
|
||
einfo ("%X");
|
||
}
|
||
|
||
return TRUE;
|
||
}
|
||
|
||
/* Counter to limit the number of relocation overflow error messages
|
||
to print. Errors are printed as it is decremented. When it's
|
||
called and the counter is zero, a final message is printed
|
||
indicating more relocations were omitted. When it gets to -1, no
|
||
such errors are printed. If it's initially set to a value less
|
||
than -1, all such errors will be printed (--verbose does this). */
|
||
|
||
int overflow_cutoff_limit = 10;
|
||
|
||
/* This is called when a reloc overflows. */
|
||
|
||
static bfd_boolean
|
||
reloc_overflow (struct bfd_link_info *info,
|
||
struct bfd_link_hash_entry *entry,
|
||
const char *name,
|
||
const char *reloc_name,
|
||
bfd_vma addend,
|
||
bfd *abfd,
|
||
asection *section,
|
||
bfd_vma address)
|
||
{
|
||
if (overflow_cutoff_limit == -1)
|
||
return TRUE;
|
||
|
||
einfo ("%X%H:", abfd, section, address);
|
||
|
||
if (overflow_cutoff_limit >= 0
|
||
&& overflow_cutoff_limit-- == 0)
|
||
{
|
||
einfo (_(" additional relocation overflows omitted from the output\n"));
|
||
return TRUE;
|
||
}
|
||
|
||
if (entry)
|
||
{
|
||
while (entry->type == bfd_link_hash_indirect
|
||
|| entry->type == bfd_link_hash_warning)
|
||
entry = entry->u.i.link;
|
||
switch (entry->type)
|
||
{
|
||
case bfd_link_hash_undefined:
|
||
case bfd_link_hash_undefweak:
|
||
einfo (_(" relocation truncated to fit: %s against undefined symbol `%T'"),
|
||
reloc_name, entry->root.string);
|
||
break;
|
||
case bfd_link_hash_defined:
|
||
case bfd_link_hash_defweak:
|
||
einfo (_(" relocation truncated to fit: %s against symbol `%T' defined in %A section in %B"),
|
||
reloc_name, entry->root.string,
|
||
entry->u.def.section,
|
||
entry->u.def.section == bfd_abs_section_ptr
|
||
? info->output_bfd : entry->u.def.section->owner);
|
||
break;
|
||
default:
|
||
abort ();
|
||
break;
|
||
}
|
||
}
|
||
else
|
||
einfo (_(" relocation truncated to fit: %s against `%T'"),
|
||
reloc_name, name);
|
||
if (addend != 0)
|
||
einfo ("+%v", addend);
|
||
einfo ("\n");
|
||
return TRUE;
|
||
}
|
||
|
||
/* This is called when a dangerous relocation is made. */
|
||
|
||
static bfd_boolean
|
||
reloc_dangerous (struct bfd_link_info *info ATTRIBUTE_UNUSED,
|
||
const char *message,
|
||
bfd *abfd,
|
||
asection *section,
|
||
bfd_vma address)
|
||
{
|
||
einfo (_("%X%H: dangerous relocation: %s\n"),
|
||
abfd, section, address, message);
|
||
return TRUE;
|
||
}
|
||
|
||
/* This is called when a reloc is being generated attached to a symbol
|
||
that is not being output. */
|
||
|
||
static bfd_boolean
|
||
unattached_reloc (struct bfd_link_info *info ATTRIBUTE_UNUSED,
|
||
const char *name,
|
||
bfd *abfd,
|
||
asection *section,
|
||
bfd_vma address)
|
||
{
|
||
einfo (_("%X%H: reloc refers to symbol `%T' which is not being output\n"),
|
||
abfd, section, address, name);
|
||
return TRUE;
|
||
}
|
||
|
||
/* This is called if link_info.notice_all is set, or when a symbol in
|
||
link_info.notice_hash is found. Symbols are put in notice_hash
|
||
using the -y option, while notice_all is set if the --cref option
|
||
has been supplied, or if there are any NOCROSSREFS sections in the
|
||
linker script; and if plugins are active, since they need to monitor
|
||
all references from non-IR files. */
|
||
|
||
static bfd_boolean
|
||
notice (struct bfd_link_info *info,
|
||
struct bfd_link_hash_entry *h,
|
||
bfd *abfd,
|
||
asection *section,
|
||
bfd_vma value,
|
||
flagword flags ATTRIBUTE_UNUSED,
|
||
const char *string ATTRIBUTE_UNUSED)
|
||
{
|
||
const char *name;
|
||
|
||
if (h == NULL)
|
||
{
|
||
if (command_line.cref || nocrossref_list != NULL)
|
||
return handle_asneeded_cref (abfd, (enum notice_asneeded_action) value);
|
||
return TRUE;
|
||
}
|
||
|
||
name = h->root.string;
|
||
if (info->notice_hash != NULL
|
||
&& bfd_hash_lookup (info->notice_hash, name, FALSE, FALSE) != NULL)
|
||
{
|
||
if (bfd_is_und_section (section))
|
||
einfo ("%B: reference to %s\n", abfd, name);
|
||
else
|
||
einfo ("%B: definition of %s\n", abfd, name);
|
||
}
|
||
|
||
if (command_line.cref || nocrossref_list != NULL)
|
||
add_cref (name, abfd, section, value);
|
||
|
||
return TRUE;
|
||
}
|