967928e916
* ld.texinfo: Likewise. * ldlang.c: Formatting throughout. (archive_path): Only assume "[A-Za-z]:" is a dos drive. (input_statement_is_archive_path): New function, extracted from.. (walk_wild): ..here. (walk_wild_consider_section): Match archive:path here too. (init_map_userdata, sort_def_symbol): Convert to ISO C. * ldmain.c (main): Set link_info.path_separator. * emultempl/spuelf.em (choose_target): Don't set it here.
1535 lines
40 KiB
C
1535 lines
40 KiB
C
/* Main program of GNU linker.
|
||
Copyright 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001,
|
||
2002, 2003, 2004, 2005, 2006, 2007, 2008
|
||
Free Software Foundation, Inc.
|
||
Written by Steve Chamberlain steve@cygnus.com
|
||
|
||
This file is part of the GNU Binutils.
|
||
|
||
This program is free software; you can redistribute it and/or modify
|
||
it under the terms of the GNU General Public License as published by
|
||
the Free Software Foundation; either version 3 of the License, or
|
||
(at your option) any later version.
|
||
|
||
This program is distributed in the hope that it will be useful,
|
||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
GNU General Public License for more details.
|
||
|
||
You should have received a copy of the GNU General Public License
|
||
along with this program; if not, write to the Free Software
|
||
Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
|
||
MA 02110-1301, USA. */
|
||
|
||
#include "sysdep.h"
|
||
#include "bfd.h"
|
||
#include "safe-ctype.h"
|
||
#include "libiberty.h"
|
||
#include "progress.h"
|
||
#include "bfdlink.h"
|
||
#include "filenames.h"
|
||
|
||
#include "ld.h"
|
||
#include "ldmain.h"
|
||
#include "ldmisc.h"
|
||
#include "ldwrite.h"
|
||
#include "ldexp.h"
|
||
#include "ldlang.h"
|
||
#include <ldgram.h>
|
||
#include "ldlex.h"
|
||
#include "ldfile.h"
|
||
#include "ldemul.h"
|
||
#include "ldctor.h"
|
||
|
||
/* Somewhere above, sys/stat.h got included. */
|
||
#if !defined(S_ISDIR) && defined(S_IFDIR)
|
||
#define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR)
|
||
#endif
|
||
|
||
#include <string.h>
|
||
|
||
#ifdef HAVE_SBRK
|
||
#if !HAVE_DECL_SBRK
|
||
extern void *sbrk ();
|
||
#endif
|
||
#endif
|
||
|
||
#ifndef TARGET_SYSTEM_ROOT
|
||
#define TARGET_SYSTEM_ROOT ""
|
||
#endif
|
||
|
||
/* EXPORTS */
|
||
|
||
FILE *saved_script_handle = NULL;
|
||
FILE *previous_script_handle = NULL;
|
||
bfd_boolean force_make_executable = FALSE;
|
||
|
||
char *default_target;
|
||
const char *output_filename = "a.out";
|
||
|
||
/* Name this program was invoked by. */
|
||
char *program_name;
|
||
|
||
/* The prefix for system library directories. */
|
||
const char *ld_sysroot;
|
||
|
||
/* The canonical representation of ld_sysroot. */
|
||
char * ld_canon_sysroot;
|
||
int ld_canon_sysroot_len;
|
||
|
||
/* Set by -G argument, for MIPS ECOFF target. */
|
||
int g_switch_value = 8;
|
||
|
||
/* Nonzero means print names of input files as processed. */
|
||
bfd_boolean trace_files;
|
||
|
||
/* Nonzero means same, but note open failures, too. */
|
||
bfd_boolean trace_file_tries;
|
||
|
||
/* Nonzero means version number was printed, so exit successfully
|
||
instead of complaining if no input files are given. */
|
||
bfd_boolean version_printed;
|
||
|
||
/* Nonzero means link in every member of an archive. */
|
||
bfd_boolean whole_archive;
|
||
|
||
/* Nonzero means create DT_NEEDED entries only if a dynamic library
|
||
actually satisfies some reference in a regular object. */
|
||
bfd_boolean as_needed;
|
||
|
||
/* Nonzero means never create DT_NEEDED entries for dynamic libraries
|
||
in DT_NEEDED tags. */
|
||
bfd_boolean add_needed = TRUE;
|
||
|
||
/* TRUE if we should demangle symbol names. */
|
||
bfd_boolean demangling;
|
||
|
||
args_type command_line;
|
||
|
||
ld_config_type config;
|
||
|
||
sort_type sort_section;
|
||
|
||
static const char *get_sysroot
|
||
(int, char **);
|
||
static char *get_emulation
|
||
(int, char **);
|
||
static void set_scripts_dir
|
||
(void);
|
||
static bfd_boolean add_archive_element
|
||
(struct bfd_link_info *, bfd *, const char *);
|
||
static bfd_boolean multiple_definition
|
||
(struct bfd_link_info *, const char *, bfd *, asection *, bfd_vma,
|
||
bfd *, asection *, bfd_vma);
|
||
static bfd_boolean multiple_common
|
||
(struct bfd_link_info *, const char *, bfd *, enum bfd_link_hash_type,
|
||
bfd_vma, bfd *, enum bfd_link_hash_type, bfd_vma);
|
||
static bfd_boolean add_to_set
|
||
(struct bfd_link_info *, struct bfd_link_hash_entry *,
|
||
bfd_reloc_code_real_type, bfd *, asection *, bfd_vma);
|
||
static bfd_boolean constructor_callback
|
||
(struct bfd_link_info *, bfd_boolean, const char *, bfd *,
|
||
asection *, bfd_vma);
|
||
static bfd_boolean warning_callback
|
||
(struct bfd_link_info *, const char *, const char *, bfd *,
|
||
asection *, bfd_vma);
|
||
static void warning_find_reloc
|
||
(bfd *, asection *, void *);
|
||
static bfd_boolean undefined_symbol
|
||
(struct bfd_link_info *, const char *, bfd *, asection *, bfd_vma,
|
||
bfd_boolean);
|
||
static bfd_boolean reloc_overflow
|
||
(struct bfd_link_info *, struct bfd_link_hash_entry *, const char *,
|
||
const char *, bfd_vma, bfd *, asection *, bfd_vma);
|
||
static bfd_boolean reloc_dangerous
|
||
(struct bfd_link_info *, const char *, bfd *, asection *, bfd_vma);
|
||
static bfd_boolean unattached_reloc
|
||
(struct bfd_link_info *, const char *, bfd *, asection *, bfd_vma);
|
||
static bfd_boolean notice
|
||
(struct bfd_link_info *, const char *, bfd *, asection *, bfd_vma);
|
||
|
||
static struct bfd_link_callbacks link_callbacks =
|
||
{
|
||
add_archive_element,
|
||
multiple_definition,
|
||
multiple_common,
|
||
add_to_set,
|
||
constructor_callback,
|
||
warning_callback,
|
||
undefined_symbol,
|
||
reloc_overflow,
|
||
reloc_dangerous,
|
||
unattached_reloc,
|
||
notice,
|
||
einfo,
|
||
info_msg,
|
||
minfo,
|
||
ldlang_override_segment_assignment
|
||
};
|
||
|
||
struct bfd_link_info link_info;
|
||
|
||
static void
|
||
remove_output (void)
|
||
{
|
||
if (output_filename)
|
||
{
|
||
if (link_info.output_bfd)
|
||
bfd_cache_close (link_info.output_bfd);
|
||
if (delete_output_file_on_failure)
|
||
unlink_if_ordinary (output_filename);
|
||
}
|
||
}
|
||
|
||
int
|
||
main (int argc, char **argv)
|
||
{
|
||
char *emulation;
|
||
long start_time = get_run_time ();
|
||
|
||
#if defined (HAVE_SETLOCALE) && defined (HAVE_LC_MESSAGES)
|
||
setlocale (LC_MESSAGES, "");
|
||
#endif
|
||
#if defined (HAVE_SETLOCALE)
|
||
setlocale (LC_CTYPE, "");
|
||
#endif
|
||
bindtextdomain (PACKAGE, LOCALEDIR);
|
||
textdomain (PACKAGE);
|
||
|
||
program_name = argv[0];
|
||
xmalloc_set_program_name (program_name);
|
||
|
||
START_PROGRESS (program_name, 0);
|
||
|
||
expandargv (&argc, &argv);
|
||
|
||
bfd_init ();
|
||
|
||
bfd_set_error_program_name (program_name);
|
||
|
||
xatexit (remove_output);
|
||
|
||
/* Set up the sysroot directory. */
|
||
ld_sysroot = get_sysroot (argc, argv);
|
||
if (*ld_sysroot)
|
||
{
|
||
if (*TARGET_SYSTEM_ROOT == 0)
|
||
{
|
||
einfo ("%P%F: this linker was not configured to use sysroots\n");
|
||
ld_sysroot = "";
|
||
}
|
||
else
|
||
ld_canon_sysroot = lrealpath (ld_sysroot);
|
||
}
|
||
if (ld_canon_sysroot)
|
||
ld_canon_sysroot_len = strlen (ld_canon_sysroot);
|
||
else
|
||
ld_canon_sysroot_len = -1;
|
||
|
||
/* Set the default BFD target based on the configured target. Doing
|
||
this permits the linker to be configured for a particular target,
|
||
and linked against a shared BFD library which was configured for
|
||
a different target. The macro TARGET is defined by Makefile. */
|
||
if (! bfd_set_default_target (TARGET))
|
||
{
|
||
einfo (_("%X%P: can't set BFD default target to `%s': %E\n"), TARGET);
|
||
xexit (1);
|
||
}
|
||
|
||
#if YYDEBUG
|
||
{
|
||
extern int yydebug;
|
||
yydebug = 1;
|
||
}
|
||
#endif
|
||
|
||
config.build_constructors = TRUE;
|
||
config.rpath_separator = ':';
|
||
config.split_by_reloc = (unsigned) -1;
|
||
config.split_by_file = (bfd_size_type) -1;
|
||
config.make_executable = TRUE;
|
||
config.magic_demand_paged = TRUE;
|
||
config.text_read_only = TRUE;
|
||
|
||
command_line.warn_mismatch = TRUE;
|
||
command_line.warn_search_mismatch = TRUE;
|
||
command_line.check_section_addresses = TRUE;
|
||
|
||
/* We initialize DEMANGLING based on the environment variable
|
||
COLLECT_NO_DEMANGLE. The gcc collect2 program will demangle the
|
||
output of the linker, unless COLLECT_NO_DEMANGLE is set in the
|
||
environment. Acting the same way here lets us provide the same
|
||
interface by default. */
|
||
demangling = getenv ("COLLECT_NO_DEMANGLE") == NULL;
|
||
|
||
link_info.allow_undefined_version = TRUE;
|
||
link_info.keep_memory = TRUE;
|
||
link_info.combreloc = TRUE;
|
||
link_info.strip_discarded = TRUE;
|
||
link_info.emit_hash = TRUE;
|
||
link_info.callbacks = &link_callbacks;
|
||
link_info.input_bfds_tail = &link_info.input_bfds;
|
||
/* SVR4 linkers seem to set DT_INIT and DT_FINI based on magic _init
|
||
and _fini symbols. We are compatible. */
|
||
link_info.init_function = "_init";
|
||
link_info.fini_function = "_fini";
|
||
link_info.relax_pass = 1;
|
||
link_info.pei386_auto_import = -1;
|
||
link_info.spare_dynamic_tags = 5;
|
||
link_info.path_separator = ':';
|
||
|
||
ldfile_add_arch ("");
|
||
emulation = get_emulation (argc, argv);
|
||
ldemul_choose_mode (emulation);
|
||
default_target = ldemul_choose_target (argc, argv);
|
||
lang_init ();
|
||
ldemul_before_parse ();
|
||
lang_has_input_file = FALSE;
|
||
parse_args (argc, argv);
|
||
|
||
if (config.hash_table_size != 0)
|
||
bfd_hash_set_default_size (config.hash_table_size);
|
||
|
||
ldemul_set_symbols ();
|
||
|
||
if (link_info.relocatable)
|
||
{
|
||
if (command_line.relax)
|
||
einfo (_("%P%F: --relax and -r may not be used together\n"));
|
||
if (link_info.shared)
|
||
einfo (_("%P%F: -r and -shared may not be used together\n"));
|
||
}
|
||
|
||
/* We may have -Bsymbolic, -Bsymbolic-functions, --dynamic-list-data,
|
||
--dynamic-list-cpp-new, --dynamic-list-cpp-typeinfo and
|
||
--dynamic-list FILE. -Bsymbolic and -Bsymbolic-functions are
|
||
for shared libraries. -Bsymbolic overrides all others and vice
|
||
versa. */
|
||
switch (command_line.symbolic)
|
||
{
|
||
case symbolic_unset:
|
||
break;
|
||
case symbolic:
|
||
/* -Bsymbolic is for shared library only. */
|
||
if (link_info.shared)
|
||
{
|
||
link_info.symbolic = TRUE;
|
||
/* Should we free the unused memory? */
|
||
link_info.dynamic_list = NULL;
|
||
command_line.dynamic_list = dynamic_list_unset;
|
||
}
|
||
break;
|
||
case symbolic_functions:
|
||
/* -Bsymbolic-functions is for shared library only. */
|
||
if (link_info.shared)
|
||
command_line.dynamic_list = dynamic_list_data;
|
||
break;
|
||
}
|
||
|
||
switch (command_line.dynamic_list)
|
||
{
|
||
case dynamic_list_unset:
|
||
break;
|
||
case dynamic_list_data:
|
||
link_info.dynamic_data = TRUE;
|
||
case dynamic_list:
|
||
link_info.dynamic = TRUE;
|
||
break;
|
||
}
|
||
|
||
if (! link_info.shared)
|
||
{
|
||
if (command_line.filter_shlib)
|
||
einfo (_("%P%F: -F may not be used without -shared\n"));
|
||
if (command_line.auxiliary_filters)
|
||
einfo (_("%P%F: -f may not be used without -shared\n"));
|
||
}
|
||
|
||
if (! link_info.shared || link_info.pie)
|
||
link_info.executable = TRUE;
|
||
|
||
/* Treat ld -r -s as ld -r -S -x (i.e., strip all local symbols). I
|
||
don't see how else this can be handled, since in this case we
|
||
must preserve all externally visible symbols. */
|
||
if (link_info.relocatable && link_info.strip == strip_all)
|
||
{
|
||
link_info.strip = strip_debugger;
|
||
if (link_info.discard == discard_sec_merge)
|
||
link_info.discard = discard_all;
|
||
}
|
||
|
||
/* This essentially adds another -L directory so this must be done after
|
||
the -L's in argv have been processed. */
|
||
set_scripts_dir ();
|
||
|
||
/* If we have not already opened and parsed a linker script,
|
||
try the default script from command line first. */
|
||
if (saved_script_handle == NULL
|
||
&& command_line.default_script != NULL)
|
||
{
|
||
ldfile_open_command_file (command_line.default_script);
|
||
parser_input = input_script;
|
||
yyparse ();
|
||
}
|
||
|
||
/* If we have not already opened and parsed a linker script
|
||
read the emulation's appropriate default script. */
|
||
if (saved_script_handle == NULL)
|
||
{
|
||
int isfile;
|
||
char *s = ldemul_get_script (&isfile);
|
||
|
||
if (isfile)
|
||
ldfile_open_command_file (s);
|
||
else
|
||
{
|
||
lex_string = s;
|
||
lex_redirect (s);
|
||
}
|
||
parser_input = input_script;
|
||
yyparse ();
|
||
lex_string = NULL;
|
||
}
|
||
|
||
if (trace_file_tries)
|
||
{
|
||
if (saved_script_handle)
|
||
info_msg (_("using external linker script:"));
|
||
else
|
||
info_msg (_("using internal linker script:"));
|
||
info_msg ("\n==================================================\n");
|
||
|
||
if (saved_script_handle)
|
||
{
|
||
static const int ld_bufsz = 8193;
|
||
size_t n;
|
||
char *buf = xmalloc (ld_bufsz);
|
||
|
||
rewind (saved_script_handle);
|
||
while ((n = fread (buf, 1, ld_bufsz - 1, saved_script_handle)) > 0)
|
||
{
|
||
buf[n] = 0;
|
||
info_msg (buf);
|
||
}
|
||
rewind (saved_script_handle);
|
||
free (buf);
|
||
}
|
||
else
|
||
{
|
||
int isfile;
|
||
|
||
info_msg (ldemul_get_script (&isfile));
|
||
}
|
||
|
||
info_msg ("\n==================================================\n");
|
||
}
|
||
|
||
lang_final ();
|
||
|
||
if (!lang_has_input_file)
|
||
{
|
||
if (version_printed)
|
||
xexit (0);
|
||
einfo (_("%P%F: no input files\n"));
|
||
}
|
||
|
||
if (trace_files)
|
||
info_msg (_("%P: mode %s\n"), emulation);
|
||
|
||
ldemul_after_parse ();
|
||
|
||
if (config.map_filename)
|
||
{
|
||
if (strcmp (config.map_filename, "-") == 0)
|
||
{
|
||
config.map_file = stdout;
|
||
}
|
||
else
|
||
{
|
||
config.map_file = fopen (config.map_filename, FOPEN_WT);
|
||
if (config.map_file == (FILE *) NULL)
|
||
{
|
||
bfd_set_error (bfd_error_system_call);
|
||
einfo (_("%P%F: cannot open map file %s: %E\n"),
|
||
config.map_filename);
|
||
}
|
||
}
|
||
}
|
||
|
||
lang_process ();
|
||
|
||
/* Print error messages for any missing symbols, for any warning
|
||
symbols, and possibly multiple definitions. */
|
||
if (link_info.relocatable)
|
||
link_info.output_bfd->flags &= ~EXEC_P;
|
||
else
|
||
link_info.output_bfd->flags |= EXEC_P;
|
||
|
||
ldwrite ();
|
||
|
||
if (config.map_file != NULL)
|
||
lang_map ();
|
||
if (command_line.cref)
|
||
output_cref (config.map_file != NULL ? config.map_file : stdout);
|
||
if (nocrossref_list != NULL)
|
||
check_nocrossrefs ();
|
||
|
||
lang_finish ();
|
||
|
||
/* Even if we're producing relocatable output, some non-fatal errors should
|
||
be reported in the exit status. (What non-fatal errors, if any, do we
|
||
want to ignore for relocatable output?) */
|
||
if (!config.make_executable && !force_make_executable)
|
||
{
|
||
if (trace_files)
|
||
einfo (_("%P: link errors found, deleting executable `%s'\n"),
|
||
output_filename);
|
||
|
||
/* The file will be removed by remove_output. */
|
||
xexit (1);
|
||
}
|
||
else
|
||
{
|
||
if (! bfd_close (link_info.output_bfd))
|
||
einfo (_("%F%B: final close failed: %E\n"), link_info.output_bfd);
|
||
|
||
/* If the --force-exe-suffix is enabled, and we're making an
|
||
executable file and it doesn't end in .exe, copy it to one
|
||
which does. */
|
||
if (! link_info.relocatable && command_line.force_exe_suffix)
|
||
{
|
||
int len = strlen (output_filename);
|
||
|
||
if (len < 4
|
||
|| (strcasecmp (output_filename + len - 4, ".exe") != 0
|
||
&& strcasecmp (output_filename + len - 4, ".dll") != 0))
|
||
{
|
||
FILE *src;
|
||
FILE *dst;
|
||
const int bsize = 4096;
|
||
char *buf = xmalloc (bsize);
|
||
int l;
|
||
char *dst_name = xmalloc (len + 5);
|
||
|
||
strcpy (dst_name, output_filename);
|
||
strcat (dst_name, ".exe");
|
||
src = fopen (output_filename, FOPEN_RB);
|
||
dst = fopen (dst_name, FOPEN_WB);
|
||
|
||
if (!src)
|
||
einfo (_("%X%P: unable to open for source of copy `%s'\n"),
|
||
output_filename);
|
||
if (!dst)
|
||
einfo (_("%X%P: unable to open for destination of copy `%s'\n"),
|
||
dst_name);
|
||
while ((l = fread (buf, 1, bsize, src)) > 0)
|
||
{
|
||
int done = fwrite (buf, 1, l, dst);
|
||
|
||
if (done != l)
|
||
einfo (_("%P: Error writing file `%s'\n"), dst_name);
|
||
}
|
||
|
||
fclose (src);
|
||
if (fclose (dst) == EOF)
|
||
einfo (_("%P: Error closing file `%s'\n"), dst_name);
|
||
free (dst_name);
|
||
free (buf);
|
||
}
|
||
}
|
||
}
|
||
|
||
END_PROGRESS (program_name);
|
||
|
||
if (config.stats)
|
||
{
|
||
#ifdef HAVE_SBRK
|
||
char *lim = sbrk (0);
|
||
#endif
|
||
long run_time = get_run_time () - start_time;
|
||
|
||
fprintf (stderr, _("%s: total time in link: %ld.%06ld\n"),
|
||
program_name, run_time / 1000000, run_time % 1000000);
|
||
#ifdef HAVE_SBRK
|
||
fprintf (stderr, _("%s: data size %ld\n"), program_name,
|
||
(long) (lim - (char *) &environ));
|
||
#endif
|
||
}
|
||
|
||
/* Prevent remove_output 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;
|
||
}
|
||
|
||
/* If directory DIR contains an "ldscripts" subdirectory,
|
||
add DIR to the library search path and return TRUE,
|
||
else return FALSE. */
|
||
|
||
static bfd_boolean
|
||
check_for_scripts_dir (char *dir)
|
||
{
|
||
size_t dirlen;
|
||
char *buf;
|
||
struct stat s;
|
||
bfd_boolean res;
|
||
|
||
dirlen = strlen (dir);
|
||
/* sizeof counts the terminating NUL. */
|
||
buf = xmalloc (dirlen + sizeof ("/ldscripts"));
|
||
sprintf (buf, "%s/ldscripts", dir);
|
||
|
||
res = stat (buf, &s) == 0 && S_ISDIR (s.st_mode);
|
||
free (buf);
|
||
if (res)
|
||
ldfile_add_library_path (dir, FALSE);
|
||
return res;
|
||
}
|
||
|
||
/* Set the default directory for finding script files.
|
||
Libraries will be searched for here too, but that's ok.
|
||
We look for the "ldscripts" directory in:
|
||
|
||
SCRIPTDIR (passed from Makefile)
|
||
(adjusted according to the current location of the binary)
|
||
SCRIPTDIR (passed from Makefile)
|
||
the dir where this program is (for using it from the build tree)
|
||
the dir where this program is/../lib
|
||
(for installing the tool suite elsewhere). */
|
||
|
||
static void
|
||
set_scripts_dir (void)
|
||
{
|
||
char *end, *dir;
|
||
size_t dirlen;
|
||
bfd_boolean found;
|
||
|
||
dir = make_relative_prefix (program_name, BINDIR, SCRIPTDIR);
|
||
if (dir)
|
||
{
|
||
found = check_for_scripts_dir (dir);
|
||
free (dir);
|
||
if (found)
|
||
return;
|
||
}
|
||
|
||
dir = make_relative_prefix (program_name, TOOLBINDIR, SCRIPTDIR);
|
||
if (dir)
|
||
{
|
||
found = check_for_scripts_dir (dir);
|
||
free (dir);
|
||
if (found)
|
||
return;
|
||
}
|
||
|
||
if (check_for_scripts_dir (SCRIPTDIR))
|
||
/* We've been installed normally. */
|
||
return;
|
||
|
||
/* Look for "ldscripts" in the dir where our binary is. */
|
||
end = strrchr (program_name, '/');
|
||
#ifdef HAVE_DOS_BASED_FILE_SYSTEM
|
||
{
|
||
/* We could have \foo\bar, or /foo\bar. */
|
||
char *bslash = strrchr (program_name, '\\');
|
||
|
||
if (end == NULL || (bslash != NULL && bslash > end))
|
||
end = bslash;
|
||
}
|
||
#endif
|
||
|
||
if (end == NULL)
|
||
/* Don't look for ldscripts in the current directory. There is
|
||
too much potential for confusion. */
|
||
return;
|
||
|
||
dirlen = end - program_name;
|
||
/* Make a copy of program_name in dir.
|
||
Leave room for later "/../lib". */
|
||
dir = xmalloc (dirlen + 8);
|
||
strncpy (dir, program_name, dirlen);
|
||
dir[dirlen] = '\0';
|
||
|
||
if (check_for_scripts_dir (dir))
|
||
{
|
||
free (dir);
|
||
return;
|
||
}
|
||
|
||
/* Look for "ldscripts" in <the dir where our binary is>/../lib. */
|
||
strcpy (dir + dirlen, "/../lib");
|
||
check_for_scripts_dir (dir);
|
||
free (dir);
|
||
}
|
||
|
||
void
|
||
add_ysym (const char *name)
|
||
{
|
||
if (link_info.notice_hash == NULL)
|
||
{
|
||
link_info.notice_hash = 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"));
|
||
}
|
||
|
||
/* 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 = 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 = 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 = 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 = 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)
|
||
{
|
||
lang_input_statement_type *input;
|
||
|
||
input = xmalloc (sizeof (lang_input_statement_type));
|
||
input->filename = abfd->filename;
|
||
input->local_sym_name = abfd->filename;
|
||
input->the_bfd = abfd;
|
||
input->asymbols = NULL;
|
||
input->next = NULL;
|
||
input->just_syms_flag = FALSE;
|
||
input->loaded = FALSE;
|
||
input->search_dirs_flag = FALSE;
|
||
|
||
/* FIXME: The following fields are not set: header.next,
|
||
header.type, closed, passive_position, symbol_count,
|
||
next_real_file, is_archive, target, real. This bit of code is
|
||
from the old decode_library_subfile function. I don't know
|
||
whether any of those fields matters. */
|
||
|
||
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 || trace_file_tries)
|
||
info_msg ("%I\n", 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 ATTRIBUTE_UNUSED,
|
||
const char *name,
|
||
bfd *obfd,
|
||
asection *osec,
|
||
bfd_vma oval,
|
||
bfd *nbfd,
|
||
asection *nsec,
|
||
bfd_vma nval)
|
||
{
|
||
/* 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;
|
||
|
||
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 (command_line.relax)
|
||
{
|
||
einfo (_("%P: Disabling relaxation: it will not work with multiple definitions\n"));
|
||
command_line.relax = 0;
|
||
}
|
||
|
||
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,
|
||
const char *name,
|
||
bfd *obfd,
|
||
enum bfd_link_hash_type otype,
|
||
bfd_vma osize,
|
||
bfd *nbfd,
|
||
enum bfd_link_hash_type ntype,
|
||
bfd_vma nsize)
|
||
{
|
||
if (! config.warn_common)
|
||
return TRUE;
|
||
|
||
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 (link_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
|
||
{
|
||
lang_input_statement_type *entry;
|
||
asymbol **asymbols;
|
||
struct warning_callback_info info;
|
||
|
||
/* Look through the relocs to see if we can find a plausible
|
||
address. */
|
||
entry = (lang_input_statement_type *) abfd->usrdata;
|
||
if (entry != NULL && entry->asymbols != NULL)
|
||
asymbols = entry->asymbols;
|
||
else
|
||
{
|
||
long symsize;
|
||
long symbol_count;
|
||
|
||
symsize = bfd_get_symtab_upper_bound (abfd);
|
||
if (symsize < 0)
|
||
einfo (_("%B%F: could not read symbols: %E\n"), abfd);
|
||
asymbols = xmalloc (symsize);
|
||
symbol_count = bfd_canonicalize_symtab (abfd, asymbols);
|
||
if (symbol_count < 0)
|
||
einfo (_("%B%F: could not read symbols: %E\n"), abfd);
|
||
if (entry != NULL)
|
||
{
|
||
entry->asymbols = asymbols;
|
||
entry->symbol_count = symbol_count;
|
||
}
|
||
}
|
||
|
||
info.found = FALSE;
|
||
info.warning = warning;
|
||
info.symbol = symbol;
|
||
info.asymbols = asymbols;
|
||
bfd_map_over_sections (abfd, warning_find_reloc, &info);
|
||
|
||
if (! info.found)
|
||
einfo ("%B: %s%s\n", abfd, _("warning: "), warning);
|
||
|
||
if (entry == NULL)
|
||
free (asymbols);
|
||
}
|
||
|
||
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 = 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 = 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 ATTRIBUTE_UNUSED,
|
||
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 (config.warn_once)
|
||
{
|
||
static struct bfd_hash_table *hash;
|
||
|
||
/* Only warn once about a particular undefined symbol. */
|
||
if (hash == NULL)
|
||
{
|
||
hash = xmalloc (sizeof (struct bfd_hash_table));
|
||
if (!bfd_hash_table_init (hash, bfd_hash_newfunc,
|
||
sizeof (struct bfd_hash_entry)))
|
||
einfo (_("%F%P: bfd_hash_table_init failed: %E\n"));
|
||
}
|
||
|
||
if (bfd_hash_lookup (hash, name, FALSE, FALSE) != NULL)
|
||
return TRUE;
|
||
|
||
if (bfd_hash_lookup (hash, name, TRUE, TRUE) == NULL)
|
||
einfo (_("%F%P: bfd_hash_lookup failed: %E\n"));
|
||
}
|
||
|
||
/* 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 ATTRIBUTE_UNUSED,
|
||
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%C:", 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
|
||
? link_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%C: 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%C: 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. */
|
||
|
||
static bfd_boolean
|
||
notice (struct bfd_link_info *info,
|
||
const char *name,
|
||
bfd *abfd,
|
||
asection *section,
|
||
bfd_vma value)
|
||
{
|
||
if (name == NULL)
|
||
{
|
||
if (command_line.cref || nocrossref_list != NULL)
|
||
return handle_asneeded_cref (abfd, value);
|
||
return TRUE;
|
||
}
|
||
|
||
if (! info->notice_all
|
||
|| (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;
|
||
}
|