838 lines
21 KiB
C
838 lines
21 KiB
C
/* Main program of GNU linker.
|
||
Copyright (C) 1991, 1993, 1994 Free Software Foundation, Inc.
|
||
Written by Steve Chamberlain steve@cygnus.com
|
||
|
||
This file is part of GLD, the Gnu Linker.
|
||
|
||
GLD 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 2, or (at your option)
|
||
any later version.
|
||
|
||
GLD 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 GLD; see the file COPYING. If not, write to
|
||
the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
|
||
|
||
|
||
#include "bfd.h"
|
||
#include "sysdep.h"
|
||
#include <stdio.h>
|
||
#include "bfdlink.h"
|
||
|
||
#include "config.h"
|
||
#include "ld.h"
|
||
#include "ldmain.h"
|
||
#include "ldmisc.h"
|
||
#include "ldwrite.h"
|
||
#include "ldgram.h"
|
||
#include "ldexp.h"
|
||
#include "ldlang.h"
|
||
#include "ldemul.h"
|
||
#include "ldlex.h"
|
||
#include "ldfile.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>
|
||
|
||
static char *get_emulation PARAMS ((int, char **));
|
||
static void set_scripts_dir PARAMS ((void));
|
||
|
||
/* EXPORTS */
|
||
|
||
char *default_target;
|
||
const char *output_filename = "a.out";
|
||
|
||
/* Name this program was invoked by. */
|
||
char *program_name;
|
||
|
||
/* The file that we're creating */
|
||
bfd *output_bfd = 0;
|
||
|
||
/* Set by -G argument, for MIPS ECOFF target. */
|
||
int g_switch_value = 8;
|
||
|
||
/* Nonzero means print names of input files as processed. */
|
||
boolean trace_files;
|
||
|
||
/* Nonzero means same, but note open failures, too. */
|
||
boolean trace_file_tries;
|
||
|
||
/* Nonzero means version number was printed, so exit successfully
|
||
instead of complaining if no input files are given. */
|
||
boolean version_printed;
|
||
|
||
/* 1 => write load map. */
|
||
boolean write_map;
|
||
|
||
args_type command_line;
|
||
|
||
ld_config_type config;
|
||
|
||
static boolean check_for_scripts_dir PARAMS ((char *dir));
|
||
static boolean add_archive_element PARAMS ((struct bfd_link_info *, bfd *,
|
||
const char *));
|
||
static boolean multiple_definition PARAMS ((struct bfd_link_info *,
|
||
const char *,
|
||
bfd *, asection *, bfd_vma,
|
||
bfd *, asection *, bfd_vma));
|
||
static boolean multiple_common PARAMS ((struct bfd_link_info *,
|
||
const char *, bfd *,
|
||
enum bfd_link_hash_type, bfd_vma,
|
||
bfd *, enum bfd_link_hash_type,
|
||
bfd_vma));
|
||
static boolean add_to_set PARAMS ((struct bfd_link_info *,
|
||
struct bfd_link_hash_entry *,
|
||
unsigned int bitsize,
|
||
bfd *, asection *, bfd_vma));
|
||
static boolean constructor_callback PARAMS ((struct bfd_link_info *,
|
||
boolean constructor,
|
||
unsigned int bitsize,
|
||
const char *name,
|
||
bfd *, asection *, bfd_vma));
|
||
static boolean warning_callback PARAMS ((struct bfd_link_info *,
|
||
const char *));
|
||
static boolean undefined_symbol PARAMS ((struct bfd_link_info *,
|
||
const char *, bfd *,
|
||
asection *, bfd_vma));
|
||
static boolean reloc_overflow PARAMS ((struct bfd_link_info *, const char *,
|
||
const char *, bfd_vma,
|
||
bfd *, asection *, bfd_vma));
|
||
static boolean reloc_dangerous PARAMS ((struct bfd_link_info *, const char *,
|
||
bfd *, asection *, bfd_vma));
|
||
static boolean unattached_reloc PARAMS ((struct bfd_link_info *,
|
||
const char *, bfd *, asection *,
|
||
bfd_vma));
|
||
static boolean notice_ysym PARAMS ((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_ysym
|
||
};
|
||
|
||
struct bfd_link_info link_info;
|
||
|
||
extern int main PARAMS ((int, char **));
|
||
|
||
int
|
||
main (argc, argv)
|
||
int argc;
|
||
char **argv;
|
||
{
|
||
char *emulation;
|
||
long start_time = get_run_time ();
|
||
|
||
program_name = argv[0];
|
||
|
||
bfd_init ();
|
||
|
||
/* Initialize the data about options. */
|
||
trace_files = trace_file_tries = version_printed = false;
|
||
write_map = false;
|
||
config.build_constructors = true;
|
||
command_line.force_common_definition = false;
|
||
|
||
link_info.callbacks = &link_callbacks;
|
||
link_info.relocateable = false;
|
||
link_info.strip = strip_none;
|
||
link_info.discard = discard_none;
|
||
link_info.lprefix_len = 1;
|
||
link_info.lprefix = "L";
|
||
link_info.keep_memory = true;
|
||
link_info.input_bfds = NULL;
|
||
link_info.create_object_symbols_section = NULL;
|
||
link_info.hash = NULL;
|
||
link_info.keep_hash = NULL;
|
||
link_info.notice_hash = NULL;
|
||
|
||
ldfile_add_arch ("");
|
||
|
||
config.make_executable = true;
|
||
force_make_executable = false;
|
||
config.magic_demand_paged = true;
|
||
config.text_read_only = true;
|
||
config.make_executable = true;
|
||
|
||
emulation = get_emulation (argc, argv);
|
||
ldemul_choose_mode (emulation);
|
||
default_target = ldemul_choose_target ();
|
||
lang_init ();
|
||
ldemul_before_parse ();
|
||
lang_has_input_file = false;
|
||
parse_args (argc, argv);
|
||
|
||
/* This essentially adds another -L directory so this must be done after
|
||
the -L's in argv have been processed. */
|
||
set_scripts_dir ();
|
||
|
||
if (had_script == false)
|
||
{
|
||
/* Read the emulation's appropriate default script. */
|
||
int isfile;
|
||
char *s = ldemul_get_script (&isfile);
|
||
|
||
if (isfile)
|
||
{
|
||
/* sizeof counts the terminating NUL. */
|
||
size_t size = strlen (s) + sizeof ("-T ");
|
||
char *buf = (char *) ldmalloc(size);
|
||
sprintf (buf, "-T %s", s);
|
||
parse_line (buf, 0);
|
||
free (buf);
|
||
}
|
||
else
|
||
parse_line (s, 1);
|
||
}
|
||
|
||
if (link_info.relocateable && command_line.relax)
|
||
{
|
||
einfo ("%P%F: -relax and -r may not be used together\n");
|
||
}
|
||
lang_final ();
|
||
|
||
if (lang_has_input_file == false)
|
||
{
|
||
if (version_printed)
|
||
exit (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)
|
||
{
|
||
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 (config.text_read_only)
|
||
{
|
||
/* Look for a text section and mark the readonly attribute in it */
|
||
asection *found = bfd_get_section_by_name (output_bfd, ".text");
|
||
|
||
if (found != (asection *) NULL)
|
||
{
|
||
found->flags |= SEC_READONLY;
|
||
}
|
||
}
|
||
|
||
if (link_info.relocateable)
|
||
output_bfd->flags &= ~EXEC_P;
|
||
else
|
||
output_bfd->flags |= EXEC_P;
|
||
|
||
ldwrite ();
|
||
|
||
/* Even if we're producing relocateable output, some non-fatal errors should
|
||
be reported in the exit status. (What non-fatal errors, if any, do we
|
||
want to ignore for relocateable output?) */
|
||
|
||
if (config.make_executable == false && force_make_executable == false)
|
||
{
|
||
if (trace_files == true)
|
||
{
|
||
einfo ("%P: link errors found, deleting executable `%s'\n",
|
||
output_filename);
|
||
}
|
||
|
||
if (output_bfd->iostream)
|
||
fclose ((FILE *) (output_bfd->iostream));
|
||
|
||
unlink (output_filename);
|
||
exit (1);
|
||
}
|
||
else
|
||
{
|
||
bfd_close (output_bfd);
|
||
}
|
||
|
||
if (config.stats)
|
||
{
|
||
extern char **environ;
|
||
char *lim = (char *) sbrk (0);
|
||
long run_time = get_run_time () - start_time;
|
||
|
||
fprintf (stderr, "%s: total time in link: %d.%06d\n",
|
||
program_name, run_time / 1000000, run_time % 1000000);
|
||
fprintf (stderr, "%s: data size %ld\n", program_name,
|
||
(long) (lim - (char *) &environ));
|
||
}
|
||
|
||
exit (0);
|
||
return 0;
|
||
}
|
||
|
||
/* 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 (argc, argv)
|
||
int argc;
|
||
char **argv;
|
||
{
|
||
char *emulation;
|
||
int i;
|
||
|
||
emulation = (char *) getenv (EMULATION_ENVIRON);
|
||
if (emulation == NULL)
|
||
emulation = DEFAULT_EMULATION;
|
||
|
||
for (i = 1; i < argc; i++)
|
||
{
|
||
if (!strncmp (argv[i], "-m", 2))
|
||
{
|
||
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)
|
||
{
|
||
/* FIXME: The arguments -mips1, -mips2 and -mips3 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
|
||
{
|
||
/* -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 boolean
|
||
check_for_scripts_dir (dir)
|
||
char *dir;
|
||
{
|
||
size_t dirlen;
|
||
char *buf;
|
||
struct stat s;
|
||
boolean res;
|
||
|
||
dirlen = strlen (dir);
|
||
/* sizeof counts the terminating NUL. */
|
||
buf = (char *) ldmalloc (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);
|
||
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)
|
||
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 ()
|
||
{
|
||
char *end, *dir;
|
||
size_t dirlen;
|
||
|
||
if (check_for_scripts_dir (SCRIPTDIR))
|
||
return; /* We've been installed normally. */
|
||
|
||
/* Look for "ldscripts" in the dir where our binary is. */
|
||
end = strrchr (program_name, '/');
|
||
if (end)
|
||
{
|
||
dirlen = end - program_name;
|
||
/* Make a copy of program_name in dir.
|
||
Leave room for later "/../lib". */
|
||
dir = (char *) ldmalloc (dirlen + 8);
|
||
strncpy (dir, program_name, dirlen);
|
||
dir[dirlen] = '\0';
|
||
}
|
||
else
|
||
{
|
||
dirlen = 1;
|
||
dir = (char *) ldmalloc (dirlen + 8);
|
||
strcpy (dir, ".");
|
||
}
|
||
|
||
if (check_for_scripts_dir (dir))
|
||
return; /* Don't free dir. */
|
||
|
||
/* Look for "ldscripts" in <the dir where our binary is>/../lib. */
|
||
strcpy (dir + dirlen, "/../lib");
|
||
if (check_for_scripts_dir (dir))
|
||
return;
|
||
|
||
free (dir); /* Well, we tried. */
|
||
}
|
||
|
||
void
|
||
add_ysym (name)
|
||
const char *name;
|
||
{
|
||
if (link_info.notice_hash == (struct bfd_hash_table *) NULL)
|
||
{
|
||
link_info.notice_hash = ((struct bfd_hash_table *)
|
||
ldmalloc (sizeof (struct bfd_hash_table)));
|
||
if (! bfd_hash_table_init_n (link_info.notice_hash,
|
||
bfd_hash_newfunc,
|
||
61))
|
||
einfo ("%P%F: bfd_hash_table_init failed: %E\n");
|
||
}
|
||
|
||
if (bfd_hash_lookup (link_info.notice_hash, name, true, true)
|
||
== (struct bfd_hash_entry *) NULL)
|
||
einfo ("%P%F: bfd_hash_lookup failed: %E\n");
|
||
}
|
||
|
||
/* Handle the -retain-symbols-file option. */
|
||
|
||
void
|
||
add_keepsyms_file (filename)
|
||
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 == (FILE *) NULL)
|
||
{
|
||
bfd_error = system_call_error;
|
||
einfo ("%X%P: %s: %E", filename);
|
||
return;
|
||
}
|
||
|
||
link_info.keep_hash = ((struct bfd_hash_table *)
|
||
ldmalloc (sizeof (struct bfd_hash_table)));
|
||
if (! bfd_hash_table_init (link_info.keep_hash, bfd_hash_newfunc))
|
||
einfo ("%P%F: bfd_hash_table_init failed: %E\n");
|
||
|
||
bufsize = 100;
|
||
buf = (char *) ldmalloc (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 = ldrealloc (buf, bufsize);
|
||
}
|
||
c = getc (file);
|
||
}
|
||
|
||
buf[len] = '\0';
|
||
|
||
if (bfd_hash_lookup (link_info.keep_hash, buf, true, true)
|
||
== (struct bfd_hash_entry *) NULL)
|
||
einfo ("%P%F: bfd_hash_lookup for insertion failed: %E");
|
||
}
|
||
}
|
||
|
||
if (link_info.strip != strip_none)
|
||
einfo ("%P: `-retain-symbols-file' overrides `-s' and `-S'\n");
|
||
|
||
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. */
|
||
|
||
/*ARGSUSED*/
|
||
static boolean
|
||
add_archive_element (info, abfd, name)
|
||
struct bfd_link_info *info;
|
||
bfd *abfd;
|
||
const char *name;
|
||
{
|
||
lang_input_statement_type *input;
|
||
|
||
input = ((lang_input_statement_type *)
|
||
ldmalloc ((bfd_size_type) sizeof (lang_input_statement_type)));
|
||
input->filename = abfd->filename;
|
||
input->local_sym_name = abfd->filename;
|
||
input->the_bfd = abfd;
|
||
input->asymbols = NULL;
|
||
input->subfiles = NULL;
|
||
input->next = NULL;
|
||
input->just_syms_flag = false;
|
||
input->loaded = false;
|
||
input->chain = NULL;
|
||
|
||
/* FIXME: This is wrong. It should point to an entry for the
|
||
archive itself. However, it doesn't seem to matter. */
|
||
input->superfile = NULL;
|
||
|
||
/* FIXME: The following fields are not set: header.next,
|
||
header.type, closed, passive_position, symbol_count, total_size,
|
||
next_real_file, is_archive, search_dirs_flag, target, real,
|
||
common_section, common_output_section, complained. 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 (write_map)
|
||
info_msg ("%s needed due to %T\n", abfd->filename, 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. */
|
||
|
||
/*ARGSUSED*/
|
||
static boolean
|
||
multiple_definition (info, name, obfd, osec, oval, nbfd, nsec, nval)
|
||
struct bfd_link_info *info;
|
||
const char *name;
|
||
bfd *obfd;
|
||
asection *osec;
|
||
bfd_vma oval;
|
||
bfd *nbfd;
|
||
asection *nsec;
|
||
bfd_vma nval;
|
||
{
|
||
einfo ("%X%C: multiple definition of `%T'\n",
|
||
nbfd, nsec, nval, name);
|
||
if (obfd != (bfd *) NULL)
|
||
einfo ("%C: first defined here\n", obfd, osec, oval);
|
||
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. */
|
||
|
||
/*ARGSUSED*/
|
||
static boolean
|
||
multiple_common (info, name, obfd, otype, osize, nbfd, ntype, nsize)
|
||
struct bfd_link_info *info;
|
||
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)
|
||
{
|
||
ASSERT (otype == bfd_link_hash_common);
|
||
einfo ("%B: warning: definition of `%T' overriding common\n",
|
||
nbfd, name);
|
||
einfo ("%B: warning: common is here\n", obfd);
|
||
}
|
||
else if (otype == bfd_link_hash_defined)
|
||
{
|
||
ASSERT (ntype == bfd_link_hash_common);
|
||
einfo ("%B: warning: common of `%T' overridden by definition\n",
|
||
nbfd, name);
|
||
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);
|
||
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);
|
||
einfo ("%B: warning: smaller common is here\n", obfd);
|
||
}
|
||
else
|
||
{
|
||
einfo ("%B: warning: multiple common of `%T'\n", nbfd, name);
|
||
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. */
|
||
|
||
/*ARGSUSED*/
|
||
static boolean
|
||
add_to_set (info, h, bitsize, abfd, section, value)
|
||
struct bfd_link_info *info;
|
||
struct bfd_link_hash_entry *h;
|
||
unsigned int bitsize;
|
||
bfd *abfd;
|
||
asection *section;
|
||
bfd_vma value;
|
||
{
|
||
ldctor_add_set_entry (h, bitsize, section, value);
|
||
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 boolean
|
||
constructor_callback (info, constructor, bitsize, name, abfd, section, value)
|
||
struct bfd_link_info *info;
|
||
boolean constructor;
|
||
unsigned int bitsize;
|
||
const char *name;
|
||
bfd *abfd;
|
||
asection *section;
|
||
bfd_vma value;
|
||
{
|
||
char *set_name;
|
||
char *s;
|
||
struct bfd_link_hash_entry *h;
|
||
|
||
if (! config.build_constructors)
|
||
return true;
|
||
|
||
set_name = (char *) alloca (1 + sizeof "__CTOR_LIST__");
|
||
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__");
|
||
|
||
if (write_map)
|
||
info_msg ("Adding %s to constructor/destructor set %s\n", name, set_name);
|
||
|
||
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");
|
||
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, bitsize, section, value);
|
||
return true;
|
||
}
|
||
|
||
/* This is called when there is a reference to a warning symbol. */
|
||
|
||
/*ARGSUSED*/
|
||
static boolean
|
||
warning_callback (info, warning)
|
||
struct bfd_link_info *info;
|
||
const char *warning;
|
||
{
|
||
einfo ("%P: %s\n", warning);
|
||
return true;
|
||
}
|
||
|
||
/* This is called when an undefined symbol is found. */
|
||
|
||
/*ARGSUSED*/
|
||
static boolean
|
||
undefined_symbol (info, name, abfd, section, address)
|
||
struct bfd_link_info *info;
|
||
const char *name;
|
||
bfd *abfd;
|
||
asection *section;
|
||
bfd_vma address;
|
||
{
|
||
static char *error_name;
|
||
static unsigned int error_count;
|
||
|
||
#define MAX_ERRORS_IN_A_ROW 5
|
||
|
||
/* We never print more than a reasonable number of errors in a row
|
||
for a single symbol. */
|
||
if (error_name != (char *) NULL
|
||
&& strcmp (name, error_name) == 0)
|
||
++error_count;
|
||
else
|
||
{
|
||
error_count = 0;
|
||
if (error_name != (char *) NULL)
|
||
free (error_name);
|
||
error_name = buystring (name);
|
||
}
|
||
|
||
if (error_count < MAX_ERRORS_IN_A_ROW)
|
||
einfo ("%X%C: undefined reference to `%T'\n",
|
||
abfd, section, address, name);
|
||
else if (error_count == MAX_ERRORS_IN_A_ROW)
|
||
einfo ("%C: more undefined references to `%T' follow\n",
|
||
abfd, section, address, name);
|
||
|
||
return true;
|
||
}
|
||
|
||
/* This is called when a reloc overflows. */
|
||
|
||
/*ARGSUSED*/
|
||
static boolean
|
||
reloc_overflow (info, name, reloc_name, addend, abfd, section, address)
|
||
struct bfd_link_info *info;
|
||
const char *name;
|
||
const char *reloc_name;
|
||
bfd_vma addend;
|
||
bfd *abfd;
|
||
asection *section;
|
||
bfd_vma address;
|
||
{
|
||
einfo ("%X%C: relocation truncated to fit: %s %T", abfd, section,
|
||
address, reloc_name, name);
|
||
if (addend != 0)
|
||
einfo ("+%v", addend);
|
||
einfo ("\n");
|
||
return true;
|
||
}
|
||
|
||
/* This is called when a dangerous relocation is made. */
|
||
|
||
/*ARGSUSED*/
|
||
static boolean
|
||
reloc_dangerous (info, message, abfd, section, address)
|
||
struct bfd_link_info *info;
|
||
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. */
|
||
|
||
/*ARGSUSED*/
|
||
static boolean
|
||
unattached_reloc (info, name, abfd, section, address)
|
||
struct bfd_link_info *info;
|
||
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 when a symbol in notice_hash is found. Symbols are
|
||
put in notice_hash using the -y option. */
|
||
|
||
/*ARGSUSED*/
|
||
static boolean
|
||
notice_ysym (info, name, abfd, section, value)
|
||
struct bfd_link_info *info;
|
||
const char *name;
|
||
bfd *abfd;
|
||
asection *section;
|
||
bfd_vma value;
|
||
{
|
||
einfo ("%B: %s %s\n", abfd,
|
||
section != &bfd_und_section ? "definition of" : "reference to",
|
||
name);
|
||
return true;
|
||
}
|