/* Main program of GNU linker.
Copyright 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001,
- 2002, 2003
+ 2002, 2003, 2004, 2005, 2006, 2007
Free Software Foundation, Inc.
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, 59 Temple Place - Suite 330, Boston, MA
- 02111-1307, USA. */
+ Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
+ 02110-1301, USA. */
-#include "bfd.h"
#include "sysdep.h"
-#include <stdio.h>
+#include "bfd.h"
#include "safe-ctype.h"
#include "libiberty.h"
#include "progress.h"
#include <string.h>
#ifdef HAVE_SBRK
-#ifdef NEED_DECLARATION_SBRK
+#if !HAVE_DECL_SBRK
extern void *sbrk ();
#endif
#endif
char *program_name;
/* The prefix for system library directories. */
-char *ld_sysroot;
+const char *ld_sysroot;
/* The canonical representation of ld_sysroot. */
char * ld_canon_sysroot;
/* 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;
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
(struct bfd_link_info *, const char *, bfd *, asection *, bfd_vma,
bfd_boolean);
static bfd_boolean reloc_overflow
- (struct bfd_link_info *, const char *, const char *, bfd_vma,
- bfd *, asection *, bfd_vma);
+ (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
reloc_dangerous,
unattached_reloc,
notice,
- error_handler
+ einfo,
+ info_msg,
+ minfo,
+ ldlang_override_segment_assignment
};
struct bfd_link_info link_info;
{
if (output_filename)
{
- if (output_bfd && output_bfd->iostream)
- fclose ((FILE *) (output_bfd->iostream));
+ if (output_bfd)
+ bfd_cache_close (output_bfd);
if (delete_output_file_on_failure)
- unlink (output_filename);
+ unlink_if_ordinary (output_filename);
}
}
START_PROGRESS (program_name, 0);
+ expandargv (&argc, &argv);
+
bfd_init ();
bfd_set_error_program_name (program_name);
xatexit (remove_output);
-#ifdef TARGET_SYSTEM_ROOT_RELOCATABLE
- ld_sysroot = make_relative_prefix (program_name, BINDIR,
- TARGET_SYSTEM_ROOT);
-
- if (ld_sysroot)
- {
- struct stat s;
- int res = stat (ld_sysroot, &s) == 0 && S_ISDIR (s.st_mode);
-
- if (!res)
- {
- free (ld_sysroot);
- ld_sysroot = NULL;
- }
- }
-
- if (! ld_sysroot)
+ /* Set up the sysroot directory. */
+ ld_sysroot = get_sysroot (argc, argv);
+ if (*ld_sysroot)
{
- ld_sysroot = make_relative_prefix (program_name, TOOLBINDIR,
- TARGET_SYSTEM_ROOT);
-
- if (ld_sysroot)
+ if (*TARGET_SYSTEM_ROOT == 0)
{
- struct stat s;
- int res = stat (ld_sysroot, &s) == 0 && S_ISDIR (s.st_mode);
-
- if (!res)
- {
- free (ld_sysroot);
- ld_sysroot = NULL;
- }
+ einfo ("%P%F: this linker was not configured to use sysroots\n");
+ ld_sysroot = "";
}
+ else
+ ld_canon_sysroot = lrealpath (ld_sysroot);
}
-
- if (! ld_sysroot)
-#endif
- ld_sysroot = TARGET_SYSTEM_ROOT;
-
- if (ld_sysroot && *ld_sysroot)
- ld_canon_sysroot = lrealpath (ld_sysroot);
-
if (ld_canon_sysroot)
ld_canon_sysroot_len = strlen (ld_canon_sysroot);
else
}
#endif
- /* Initialize the data about options. */
- trace_files = trace_file_tries = version_printed = FALSE;
- whole_archive = FALSE;
config.build_constructors = TRUE;
- config.dynamic_link = FALSE;
- config.has_shared = FALSE;
+ config.rpath_separator = ':';
config.split_by_reloc = (unsigned) -1;
config.split_by_file = (bfd_size_type) -1;
- command_line.force_common_definition = FALSE;
- command_line.inhibit_common_definition = FALSE;
- command_line.interpreter = NULL;
- command_line.rpath = NULL;
+ 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;
- command_line.accept_unknown_input_arch = FALSE;
/* We initialize DEMANGLING based on the environment variable
COLLECT_NO_DEMANGLE. The gcc collect2 program will demangle the
interface by default. */
demangling = getenv ("COLLECT_NO_DEMANGLE") == NULL;
- link_info.relocatable = FALSE;
- link_info.emitrelocations = FALSE;
- link_info.task_link = FALSE;
- link_info.shared = FALSE;
- link_info.pie = FALSE;
- link_info.executable = FALSE;
- link_info.symbolic = FALSE;
- link_info.export_dynamic = FALSE;
- link_info.static_link = FALSE;
- link_info.traditional_format = FALSE;
- link_info.optimize = FALSE;
- link_info.unresolved_syms_in_objects = RM_NOT_YET_SET;
- link_info.unresolved_syms_in_shared_libs = RM_NOT_YET_SET;
- link_info.allow_multiple_definition = FALSE;
link_info.allow_undefined_version = TRUE;
link_info.keep_memory = TRUE;
- link_info.notice_all = FALSE;
- link_info.nocopyreloc = FALSE;
- link_info.new_dtags = FALSE;
link_info.combreloc = TRUE;
- link_info.eh_frame_hdr = FALSE;
link_info.strip_discarded = TRUE;
- link_info.strip = strip_none;
- link_info.discard = discard_sec_merge;
- link_info.common_skip_ar_aymbols = bfd_link_common_skip_none;
+ link_info.emit_hash = TRUE;
link_info.callbacks = &link_callbacks;
- link_info.hash = NULL;
- link_info.keep_hash = NULL;
- link_info.notice_hash = NULL;
- link_info.wrap_hash = NULL;
- link_info.input_bfds = NULL;
- link_info.create_object_symbols_section = NULL;
- link_info.gc_sym_list = NULL;
- link_info.base_file = NULL;
+ 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.mpc860c0 = 0;
+ link_info.relax_pass = 1;
link_info.pei386_auto_import = -1;
- link_info.pei386_runtime_pseudo_reloc = FALSE;
link_info.spare_dynamic_tags = 5;
- link_info.flags = 0;
- link_info.flags_1 = 0;
- link_info.relax_finalizing = FALSE;
ldfile_add_arch ("");
-
- config.make_executable = TRUE;
- force_make_executable = FALSE;
- config.magic_demand_paged = TRUE;
- config.text_read_only = TRUE;
-
emulation = get_emulation (argc, argv);
ldemul_choose_mode (emulation);
default_target = ldemul_choose_target (argc, argv);
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.gc_sections)
+ if (link_info.gc_sections)
einfo ("%P%F: --gc-sections and -r may not be used together\n");
- if (link_info.mpc860c0)
- einfo (_("%P%F: -r and --mpc860c0 may not be used together\n"));
else 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)
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)
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?) */
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). */
for (i = 1; i < argc; i++)
{
- if (!strncmp (argv[i], "-m", 2))
+ if (CONST_STRNEQ (argv[i], "-m"))
{
if (argv[i][2] == '\0')
{
|| strcmp (argv[i], "-mips5") == 0
|| strcmp (argv[i], "-mips32") == 0
|| strcmp (argv[i], "-mips32r2") == 0
- || strcmp (argv[i], "-mips64") == 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
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,
- 61))
+ 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 (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,
- 61))
+ 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"));
}
}
link_info.keep_hash = xmalloc (sizeof (struct bfd_hash_table));
- if (! bfd_hash_table_init (link_info.keep_hash, bfd_hash_newfunc))
+ 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;
a link. */
static bfd_boolean
-add_archive_element (struct bfd_link_info *info ATTRIBUTE_UNUSED,
+add_archive_element (struct bfd_link_info *info,
bfd *abfd,
const char *name)
{
bfd *from;
int len;
- h = bfd_link_hash_lookup (link_info.hash, name, FALSE, FALSE, TRUE);
+ h = bfd_link_hash_lookup (info->hash, name, FALSE, FALSE, TRUE);
if (h == NULL)
from = NULL;
/* Ensure that BFD_RELOC_CTOR exists now, so that we can give a
useful error message. */
if (bfd_reloc_type_lookup (output_bfd, BFD_RELOC_CTOR) == NULL
- && (link_info.relocatable
+ && (info->relocatable
|| bfd_reloc_type_lookup (abfd, BFD_RELOC_CTOR) == NULL))
einfo (_("%P%F: BFD backend error: BFD_RELOC_CTOR unsupported\n"));
return TRUE;
if (section != NULL)
- einfo ("%C: %s\n", abfd, section, address, warning);
+ einfo ("%C: %s%s\n", abfd, section, address, _("warning: "), warning);
else if (abfd == NULL)
- einfo ("%P: %s\n", warning);
+ einfo ("%P: %s%s\n", _("warning: "), warning);
else if (symbol == NULL)
- einfo ("%B: %s\n", abfd, warning);
+ einfo ("%B: %s%s\n", abfd, _("warning: "), warning);
else
{
lang_input_statement_type *entry;
bfd_map_over_sections (abfd, warning_find_reloc, &info);
if (! info.found)
- einfo ("%B: %s\n", abfd, warning);
+ einfo ("%B: %s%s\n", abfd, _("warning: "), warning);
if (entry == NULL)
free (asymbols);
&& 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\n", abfd, sec, q->address, info->warning);
+ einfo ("%C: %s%s\n", abfd, sec, q->address, _("warning: "),
+ info->warning);
info->found = TRUE;
break;
}
if (hash == NULL)
{
hash = xmalloc (sizeof (struct bfd_hash_table));
- if (! bfd_hash_table_init (hash, bfd_hash_newfunc))
+ if (!bfd_hash_table_init (hash, bfd_hash_newfunc,
+ sizeof (struct bfd_hash_entry)))
einfo (_("%F%P: bfd_hash_table_init failed: %E\n"));
}
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,
if (overflow_cutoff_limit == -1)
return TRUE;
- if (abfd == NULL)
- einfo (_("%P%X: generated"));
- else
- einfo ("%X%C:", abfd, section, address);
+ einfo ("%X%C:", abfd, section, address);
if (overflow_cutoff_limit >= 0
&& overflow_cutoff_limit-- == 0)
return TRUE;
}
- einfo (_(" relocation truncated to fit: %s %T"), reloc_name, name);
+ 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
+ ? 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");
asection *section,
bfd_vma address)
{
- if (abfd == NULL)
- einfo (_("%P%X: generated"));
- else
- einfo ("%X%C:", abfd, section, address);
- einfo (_("dangerous relocation: %s\n"), message);
+ einfo (_("%X%C: dangerous relocation: %s\n"),
+ abfd, section, address, message);
return TRUE;
}
asection *section,
bfd_vma address)
{
- if (abfd == NULL)
- einfo (_("%P%X: generated"));
- else
- einfo ("%X%C:", abfd, section, address);
- einfo (_(" reloc refers to symbol `%T' which is not being output\n"), name);
+ einfo (_("%X%C: reloc refers to symbol `%T' which is not being output\n"),
+ abfd, section, address, name);
return TRUE;
}
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))
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